96c4a17e42802df491df16cd4b74a9c4580987bb
[linux-3.10.git] / 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 0:
339                 break;
340         case V4L2_PIX_FMT_YUYV:
341                 mode = OMAP_DSS_COLOR_YUV2;
342                 break;
343         case V4L2_PIX_FMT_UYVY:
344                 mode = OMAP_DSS_COLOR_UYVY;
345                 break;
346         case V4L2_PIX_FMT_RGB565:
347                 mode = OMAP_DSS_COLOR_RGB16;
348                 break;
349         case V4L2_PIX_FMT_RGB24:
350                 mode = OMAP_DSS_COLOR_RGB24P;
351                 break;
352         case V4L2_PIX_FMT_RGB32:
353                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
354                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
355                 break;
356         case V4L2_PIX_FMT_BGR32:
357                 mode = OMAP_DSS_COLOR_RGBX32;
358                 break;
359         default:
360                 mode = -EINVAL;
361         }
362         return mode;
363 }
364
365 /*
366  * Setup the overlay
367  */
368 static int omapvid_setup_overlay(struct omap_vout_device *vout,
369                 struct omap_overlay *ovl, int posx, int posy, int outw,
370                 int outh, u32 addr)
371 {
372         int ret = 0;
373         struct omap_overlay_info info;
374         int cropheight, cropwidth, pixheight, pixwidth;
375
376         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
377                         (outw != vout->pix.width || outh != vout->pix.height)) {
378                 ret = -EINVAL;
379                 goto setup_ovl_err;
380         }
381
382         vout->dss_mode = video_mode_to_dss_mode(vout);
383         if (vout->dss_mode == -EINVAL) {
384                 ret = -EINVAL;
385                 goto setup_ovl_err;
386         }
387
388         /* Setup the input plane parameters according to
389          * rotation value selected.
390          */
391         if (is_rotation_90_or_270(vout)) {
392                 cropheight = vout->crop.width;
393                 cropwidth = vout->crop.height;
394                 pixheight = vout->pix.width;
395                 pixwidth = vout->pix.height;
396         } else {
397                 cropheight = vout->crop.height;
398                 cropwidth = vout->crop.width;
399                 pixheight = vout->pix.height;
400                 pixwidth = vout->pix.width;
401         }
402
403         ovl->get_overlay_info(ovl, &info);
404         info.paddr = addr;
405         info.width = cropwidth;
406         info.height = cropheight;
407         info.color_mode = vout->dss_mode;
408         info.mirror = vout->mirror;
409         info.pos_x = posx;
410         info.pos_y = posy;
411         info.out_width = outw;
412         info.out_height = outh;
413         info.global_alpha = vout->win.global_alpha;
414         if (!is_rotation_enabled(vout)) {
415                 info.rotation = 0;
416                 info.rotation_type = OMAP_DSS_ROT_DMA;
417                 info.screen_width = pixwidth;
418         } else {
419                 info.rotation = vout->rotation;
420                 info.rotation_type = OMAP_DSS_ROT_VRFB;
421                 info.screen_width = 2048;
422         }
423
424         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
425                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
426                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
427                 "out_height=%d rotation_type=%d screen_width=%d\n",
428                 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
429                 info.color_mode, info.rotation, info.mirror, info.pos_x,
430                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
431                 info.screen_width);
432
433         ret = ovl->set_overlay_info(ovl, &info);
434         if (ret)
435                 goto setup_ovl_err;
436
437         return 0;
438
439 setup_ovl_err:
440         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
441         return ret;
442 }
443
444 /*
445  * Initialize the overlay structure
446  */
447 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
448 {
449         int ret = 0, i;
450         struct v4l2_window *win;
451         struct omap_overlay *ovl;
452         int posx, posy, outw, outh, temp;
453         struct omap_video_timings *timing;
454         struct omapvideo_info *ovid = &vout->vid_info;
455
456         win = &vout->win;
457         for (i = 0; i < ovid->num_overlays; i++) {
458                 struct omap_dss_device *dssdev;
459
460                 ovl = ovid->overlays[i];
461                 dssdev = ovl->get_device(ovl);
462
463                 if (!dssdev)
464                         return -EINVAL;
465
466                 timing = &dssdev->panel.timings;
467
468                 outw = win->w.width;
469                 outh = win->w.height;
470                 switch (vout->rotation) {
471                 case dss_rotation_90_degree:
472                         /* Invert the height and width for 90
473                          * and 270 degree rotation
474                          */
475                         temp = outw;
476                         outw = outh;
477                         outh = temp;
478                         posy = (timing->y_res - win->w.width) - win->w.left;
479                         posx = win->w.top;
480                         break;
481
482                 case dss_rotation_180_degree:
483                         posx = (timing->x_res - win->w.width) - win->w.left;
484                         posy = (timing->y_res - win->w.height) - win->w.top;
485                         break;
486
487                 case dss_rotation_270_degree:
488                         temp = outw;
489                         outw = outh;
490                         outh = temp;
491                         posy = win->w.left;
492                         posx = (timing->x_res - win->w.height) - win->w.top;
493                         break;
494
495                 default:
496                         posx = win->w.left;
497                         posy = win->w.top;
498                         break;
499                 }
500
501                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
502                                 outw, outh, addr);
503                 if (ret)
504                         goto omapvid_init_err;
505         }
506         return 0;
507
508 omapvid_init_err:
509         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
510         return ret;
511 }
512
513 /*
514  * Apply the changes set the go bit of DSS
515  */
516 static int omapvid_apply_changes(struct omap_vout_device *vout)
517 {
518         int i;
519         struct omap_overlay *ovl;
520         struct omapvideo_info *ovid = &vout->vid_info;
521
522         for (i = 0; i < ovid->num_overlays; i++) {
523                 struct omap_dss_device *dssdev;
524
525                 ovl = ovid->overlays[i];
526                 dssdev = ovl->get_device(ovl);
527                 if (!dssdev)
528                         return -EINVAL;
529                 ovl->manager->apply(ovl->manager);
530         }
531
532         return 0;
533 }
534
535 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
536                 unsigned int irqstatus, struct timeval timevalue)
537 {
538         u32 fid;
539
540         if (vout->first_int) {
541                 vout->first_int = 0;
542                 goto err;
543         }
544
545         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
546                 fid = 1;
547         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
548                 fid = 0;
549         else
550                 goto err;
551
552         vout->field_id ^= 1;
553         if (fid != vout->field_id) {
554                 if (fid == 0)
555                         vout->field_id = fid;
556         } else if (0 == fid) {
557                 if (vout->cur_frm == vout->next_frm)
558                         goto err;
559
560                 vout->cur_frm->ts = timevalue;
561                 vout->cur_frm->state = VIDEOBUF_DONE;
562                 wake_up_interruptible(&vout->cur_frm->done);
563                 vout->cur_frm = vout->next_frm;
564         } else {
565                 if (list_empty(&vout->dma_queue) ||
566                                 (vout->cur_frm != vout->next_frm))
567                         goto err;
568         }
569
570         return vout->field_id;
571 err:
572         return 0;
573 }
574
575 static void omap_vout_isr(void *arg, unsigned int irqstatus)
576 {
577         int ret, fid, mgr_id;
578         u32 addr, irq;
579         struct omap_overlay *ovl;
580         struct timeval timevalue;
581         struct omapvideo_info *ovid;
582         struct omap_dss_device *cur_display;
583         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
584
585         if (!vout->streaming)
586                 return;
587
588         ovid = &vout->vid_info;
589         ovl = ovid->overlays[0];
590
591         mgr_id = ovl->manager->id;
592
593         /* get the display device attached to the overlay */
594         cur_display = ovl->get_device(ovl);
595
596         if (!cur_display)
597                 return;
598
599         spin_lock(&vout->vbq_lock);
600         v4l2_get_timestamp(&timevalue);
601
602         switch (cur_display->type) {
603         case OMAP_DISPLAY_TYPE_DSI:
604         case OMAP_DISPLAY_TYPE_DPI:
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         /* 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 = 0;
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 omap_overlay *ovl;
1453                 struct omapvideo_info *ovid;
1454                 unsigned int  mirror = a->value;
1455
1456                 ovid = &vout->vid_info;
1457                 ovl = ovid->overlays[0];
1458
1459                 mutex_lock(&vout->lock);
1460                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1461                         mutex_unlock(&vout->lock);
1462                         ret = -ERANGE;
1463                         break;
1464                 }
1465
1466                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1467                         mutex_unlock(&vout->lock);
1468                         ret = -EINVAL;
1469                         break;
1470                 }
1471                 vout->mirror = mirror;
1472                 vout->control[2].value = mirror;
1473                 mutex_unlock(&vout->lock);
1474                 break;
1475         }
1476         default:
1477                 ret = -EINVAL;
1478         }
1479         return ret;
1480 }
1481
1482 static int vidioc_reqbufs(struct file *file, void *fh,
1483                         struct v4l2_requestbuffers *req)
1484 {
1485         int ret = 0;
1486         unsigned int i, num_buffers = 0;
1487         struct omap_vout_device *vout = fh;
1488         struct videobuf_queue *q = &vout->vbq;
1489
1490         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1491                 return -EINVAL;
1492         /* if memory is not mmp or userptr
1493            return error */
1494         if ((V4L2_MEMORY_MMAP != req->memory) &&
1495                         (V4L2_MEMORY_USERPTR != req->memory))
1496                 return -EINVAL;
1497
1498         mutex_lock(&vout->lock);
1499         /* Cannot be requested when streaming is on */
1500         if (vout->streaming) {
1501                 ret = -EBUSY;
1502                 goto reqbuf_err;
1503         }
1504
1505         /* If buffers are already allocated free them */
1506         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1507                 if (vout->mmap_count) {
1508                         ret = -EBUSY;
1509                         goto reqbuf_err;
1510                 }
1511                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1512                         video1_numbuffers : video2_numbuffers;
1513                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1514                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1515                                         vout->buffer_size);
1516                         vout->buf_virt_addr[i] = 0;
1517                         vout->buf_phy_addr[i] = 0;
1518                 }
1519                 vout->buffer_allocated = num_buffers;
1520                 videobuf_mmap_free(q);
1521         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1522                 if (vout->buffer_allocated) {
1523                         videobuf_mmap_free(q);
1524                         for (i = 0; i < vout->buffer_allocated; i++) {
1525                                 kfree(q->bufs[i]);
1526                                 q->bufs[i] = NULL;
1527                         }
1528                         vout->buffer_allocated = 0;
1529                 }
1530         }
1531
1532         /*store the memory type in data structure */
1533         vout->memory = req->memory;
1534
1535         INIT_LIST_HEAD(&vout->dma_queue);
1536
1537         /* call videobuf_reqbufs api */
1538         ret = videobuf_reqbufs(q, req);
1539         if (ret < 0)
1540                 goto reqbuf_err;
1541
1542         vout->buffer_allocated = req->count;
1543
1544 reqbuf_err:
1545         mutex_unlock(&vout->lock);
1546         return ret;
1547 }
1548
1549 static int vidioc_querybuf(struct file *file, void *fh,
1550                         struct v4l2_buffer *b)
1551 {
1552         struct omap_vout_device *vout = fh;
1553
1554         return videobuf_querybuf(&vout->vbq, b);
1555 }
1556
1557 static int vidioc_qbuf(struct file *file, void *fh,
1558                         struct v4l2_buffer *buffer)
1559 {
1560         struct omap_vout_device *vout = fh;
1561         struct videobuf_queue *q = &vout->vbq;
1562
1563         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1564                         (buffer->index >= vout->buffer_allocated) ||
1565                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1566                 return -EINVAL;
1567         }
1568         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1569                 if ((buffer->length < vout->pix.sizeimage) ||
1570                                 (0 == buffer->m.userptr)) {
1571                         return -EINVAL;
1572                 }
1573         }
1574
1575         if ((is_rotation_enabled(vout)) &&
1576                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1577                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1578                                 "DMA Channel not allocated for Rotation\n");
1579                 return -EINVAL;
1580         }
1581
1582         return videobuf_qbuf(q, buffer);
1583 }
1584
1585 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1586 {
1587         struct omap_vout_device *vout = fh;
1588         struct videobuf_queue *q = &vout->vbq;
1589
1590         int ret;
1591         u32 addr;
1592         unsigned long size;
1593         struct videobuf_buffer *vb;
1594
1595         vb = q->bufs[b->index];
1596
1597         if (!vout->streaming)
1598                 return -EINVAL;
1599
1600         if (file->f_flags & O_NONBLOCK)
1601                 /* Call videobuf_dqbuf for non blocking mode */
1602                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1603         else
1604                 /* Call videobuf_dqbuf for  blocking mode */
1605                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1606
1607         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1608         size = (unsigned long) vb->size;
1609         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1610                                 size, DMA_TO_DEVICE);
1611         return ret;
1612 }
1613
1614 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1615 {
1616         int ret = 0, j;
1617         u32 addr = 0, mask = 0;
1618         struct omap_vout_device *vout = fh;
1619         struct videobuf_queue *q = &vout->vbq;
1620         struct omapvideo_info *ovid = &vout->vid_info;
1621
1622         mutex_lock(&vout->lock);
1623
1624         if (vout->streaming) {
1625                 ret = -EBUSY;
1626                 goto streamon_err;
1627         }
1628
1629         ret = videobuf_streamon(q);
1630         if (ret)
1631                 goto streamon_err;
1632
1633         if (list_empty(&vout->dma_queue)) {
1634                 ret = -EIO;
1635                 goto streamon_err1;
1636         }
1637
1638         /* Get the next frame from the buffer queue */
1639         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1640                         struct videobuf_buffer, queue);
1641         /* Remove buffer from the buffer queue */
1642         list_del(&vout->cur_frm->queue);
1643         /* Mark state of the current frame to active */
1644         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1645         /* Initialize field_id and started member */
1646         vout->field_id = 0;
1647
1648         /* set flag here. Next QBUF will start DMA */
1649         vout->streaming = 1;
1650
1651         vout->first_int = 1;
1652
1653         if (omap_vout_calculate_offset(vout)) {
1654                 ret = -EINVAL;
1655                 goto streamon_err1;
1656         }
1657         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1658                 + vout->cropped_offset;
1659
1660         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1661                 | DISPC_IRQ_VSYNC2;
1662
1663         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1664
1665         /* First save the configuration in ovelray structure */
1666         ret = omapvid_init(vout, addr);
1667         if (ret)
1668                 v4l2_err(&vout->vid_dev->v4l2_dev,
1669                                 "failed to set overlay info\n");
1670         /* Enable the pipeline and set the Go bit */
1671         ret = omapvid_apply_changes(vout);
1672         if (ret)
1673                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1674
1675         for (j = 0; j < ovid->num_overlays; j++) {
1676                 struct omap_overlay *ovl = ovid->overlays[j];
1677                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1678
1679                 if (dssdev) {
1680                         ret = ovl->enable(ovl);
1681                         if (ret)
1682                                 goto streamon_err1;
1683                 }
1684         }
1685
1686         ret = 0;
1687
1688 streamon_err1:
1689         if (ret)
1690                 ret = videobuf_streamoff(q);
1691 streamon_err:
1692         mutex_unlock(&vout->lock);
1693         return ret;
1694 }
1695
1696 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1697 {
1698         u32 mask = 0;
1699         int ret = 0, j;
1700         struct omap_vout_device *vout = fh;
1701         struct omapvideo_info *ovid = &vout->vid_info;
1702
1703         if (!vout->streaming)
1704                 return -EINVAL;
1705
1706         vout->streaming = 0;
1707         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1708                 | DISPC_IRQ_VSYNC2;
1709
1710         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1711
1712         for (j = 0; j < ovid->num_overlays; j++) {
1713                 struct omap_overlay *ovl = ovid->overlays[j];
1714                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1715
1716                 if (dssdev)
1717                         ovl->disable(ovl);
1718         }
1719
1720         /* Turn of the pipeline */
1721         ret = omapvid_apply_changes(vout);
1722         if (ret)
1723                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1724                                 " streamoff\n");
1725
1726         INIT_LIST_HEAD(&vout->dma_queue);
1727         ret = videobuf_streamoff(&vout->vbq);
1728
1729         return ret;
1730 }
1731
1732 static int vidioc_s_fbuf(struct file *file, void *fh,
1733                                 const struct v4l2_framebuffer *a)
1734 {
1735         int enable = 0;
1736         struct omap_overlay *ovl;
1737         struct omapvideo_info *ovid;
1738         struct omap_vout_device *vout = fh;
1739         struct omap_overlay_manager_info info;
1740         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1741
1742         ovid = &vout->vid_info;
1743         ovl = ovid->overlays[0];
1744
1745         /* OMAP DSS doesn't support Source and Destination color
1746            key together */
1747         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1748                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1749                 return -EINVAL;
1750         /* OMAP DSS Doesn't support the Destination color key
1751            and alpha blending together */
1752         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1753                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1754                 return -EINVAL;
1755
1756         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1757                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1758                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1759         } else
1760                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1761
1762         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1763                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1764                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1765         } else
1766                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1767
1768         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1769                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1770                 enable = 1;
1771         else
1772                 enable = 0;
1773         if (ovl->manager && ovl->manager->get_manager_info &&
1774                         ovl->manager->set_manager_info) {
1775
1776                 ovl->manager->get_manager_info(ovl->manager, &info);
1777                 info.trans_enabled = enable;
1778                 info.trans_key_type = key_type;
1779                 info.trans_key = vout->win.chromakey;
1780
1781                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1782                         return -EINVAL;
1783         }
1784         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1785                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1786                 enable = 1;
1787         } else {
1788                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1789                 enable = 0;
1790         }
1791         if (ovl->manager && ovl->manager->get_manager_info &&
1792                         ovl->manager->set_manager_info) {
1793                 ovl->manager->get_manager_info(ovl->manager, &info);
1794                 /* enable this only if there is no zorder cap */
1795                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1796                         info.partial_alpha_enabled = enable;
1797                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1798                         return -EINVAL;
1799         }
1800
1801         return 0;
1802 }
1803
1804 static int vidioc_g_fbuf(struct file *file, void *fh,
1805                 struct v4l2_framebuffer *a)
1806 {
1807         struct omap_overlay *ovl;
1808         struct omapvideo_info *ovid;
1809         struct omap_vout_device *vout = fh;
1810         struct omap_overlay_manager_info info;
1811
1812         ovid = &vout->vid_info;
1813         ovl = ovid->overlays[0];
1814
1815         /* The video overlay must stay within the framebuffer and can't be
1816            positioned independently. */
1817         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1818         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1819                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1820
1821         if (ovl->manager && ovl->manager->get_manager_info) {
1822                 ovl->manager->get_manager_info(ovl->manager, &info);
1823                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1824                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1825                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1826                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1827         }
1828         if (ovl->manager && ovl->manager->get_manager_info) {
1829                 ovl->manager->get_manager_info(ovl->manager, &info);
1830                 if (info.partial_alpha_enabled)
1831                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1832         }
1833
1834         return 0;
1835 }
1836
1837 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1838         .vidioc_querycap                        = vidioc_querycap,
1839         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1840         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1841         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1842         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1843         .vidioc_queryctrl                       = vidioc_queryctrl,
1844         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1845         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1846         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1847         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1848         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1849         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1850         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1851         .vidioc_cropcap                         = vidioc_cropcap,
1852         .vidioc_g_crop                          = vidioc_g_crop,
1853         .vidioc_s_crop                          = vidioc_s_crop,
1854         .vidioc_reqbufs                         = vidioc_reqbufs,
1855         .vidioc_querybuf                        = vidioc_querybuf,
1856         .vidioc_qbuf                            = vidioc_qbuf,
1857         .vidioc_dqbuf                           = vidioc_dqbuf,
1858         .vidioc_streamon                        = vidioc_streamon,
1859         .vidioc_streamoff                       = vidioc_streamoff,
1860 };
1861
1862 static const struct v4l2_file_operations omap_vout_fops = {
1863         .owner          = THIS_MODULE,
1864         .poll           = omap_vout_poll,
1865         .unlocked_ioctl = video_ioctl2,
1866         .mmap           = omap_vout_mmap,
1867         .open           = omap_vout_open,
1868         .release        = omap_vout_release,
1869 };
1870
1871 /* Init functions used during driver initialization */
1872 /* Initial setup of video_data */
1873 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1874 {
1875         struct video_device *vfd;
1876         struct v4l2_pix_format *pix;
1877         struct v4l2_control *control;
1878         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1879         struct omap_dss_device *display = ovl->get_device(ovl);
1880
1881         /* set the default pix */
1882         pix = &vout->pix;
1883
1884         /* Set the default picture of QVGA  */
1885         pix->width = QQVGA_WIDTH;
1886         pix->height = QQVGA_HEIGHT;
1887
1888         /* Default pixel format is RGB 5-6-5 */
1889         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1890         pix->field = V4L2_FIELD_ANY;
1891         pix->bytesperline = pix->width * 2;
1892         pix->sizeimage = pix->bytesperline * pix->height;
1893         pix->priv = 0;
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 = 0;
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         ret = omapdss_compat_init();
2148         if (ret) {
2149                 dev_err(&pdev->dev, "failed to init dss\n");
2150                 return ret;
2151         }
2152
2153         if (pdev->num_resources == 0) {
2154                 dev_err(&pdev->dev, "probed for an unknown device\n");
2155                 ret = -ENODEV;
2156                 goto err_dss_init;
2157         }
2158
2159         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2160         if (vid_dev == NULL) {
2161                 ret = -ENOMEM;
2162                 goto err_dss_init;
2163         }
2164
2165         vid_dev->num_displays = 0;
2166         for_each_dss_dev(dssdev) {
2167                 omap_dss_get_device(dssdev);
2168
2169                 if (!dssdev->driver) {
2170                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2171                                         dssdev->name);
2172                         omap_dss_put_device(dssdev);
2173                         continue;
2174                 }
2175
2176                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2177         }
2178
2179         if (vid_dev->num_displays == 0) {
2180                 dev_err(&pdev->dev, "no displays\n");
2181                 ret = -EINVAL;
2182                 goto probe_err0;
2183         }
2184
2185         vid_dev->num_overlays = omap_dss_get_num_overlays();
2186         for (i = 0; i < vid_dev->num_overlays; i++)
2187                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2188
2189         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2190         for (i = 0; i < vid_dev->num_managers; i++)
2191                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2192
2193         /* Get the Video1 overlay and video2 overlay.
2194          * Setup the Display attached to that overlays
2195          */
2196         for (i = 1; i < vid_dev->num_overlays; i++) {
2197                 ovl = omap_dss_get_overlay(i);
2198                 dssdev = ovl->get_device(ovl);
2199
2200                 if (dssdev) {
2201                         def_display = dssdev;
2202                 } else {
2203                         dev_warn(&pdev->dev, "cannot find display\n");
2204                         def_display = NULL;
2205                 }
2206                 if (def_display) {
2207                         struct omap_dss_driver *dssdrv = def_display->driver;
2208
2209                         ret = dssdrv->enable(def_display);
2210                         if (ret) {
2211                                 /* Here we are not considering a error
2212                                  *  as display may be enabled by frame
2213                                  *  buffer driver
2214                                  */
2215                                 dev_warn(&pdev->dev,
2216                                         "'%s' Display already enabled\n",
2217                                         def_display->name);
2218                         }
2219                 }
2220         }
2221
2222         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2223                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2224                 ret = -ENODEV;
2225                 goto probe_err1;
2226         }
2227
2228         ret = omap_vout_create_video_devices(pdev);
2229         if (ret)
2230                 goto probe_err2;
2231
2232         for (i = 0; i < vid_dev->num_displays; i++) {
2233                 struct omap_dss_device *display = vid_dev->displays[i];
2234
2235                 if (display->driver->update)
2236                         display->driver->update(display, 0, 0,
2237                                         display->panel.timings.x_res,
2238                                         display->panel.timings.y_res);
2239         }
2240         return 0;
2241
2242 probe_err2:
2243         v4l2_device_unregister(&vid_dev->v4l2_dev);
2244 probe_err1:
2245         for (i = 1; i < vid_dev->num_overlays; i++) {
2246                 def_display = NULL;
2247                 ovl = omap_dss_get_overlay(i);
2248                 dssdev = ovl->get_device(ovl);
2249
2250                 if (dssdev)
2251                         def_display = dssdev;
2252
2253                 if (def_display && def_display->driver)
2254                         def_display->driver->disable(def_display);
2255         }
2256 probe_err0:
2257         kfree(vid_dev);
2258 err_dss_init:
2259         omapdss_compat_uninit();
2260         return ret;
2261 }
2262
2263 static struct platform_driver omap_vout_driver = {
2264         .driver = {
2265                 .name = VOUT_NAME,
2266         },
2267         .remove = omap_vout_remove,
2268 };
2269
2270 static int __init omap_vout_init(void)
2271 {
2272         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2273                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2274                 return -EINVAL;
2275         }
2276         return 0;
2277 }
2278
2279 static void omap_vout_cleanup(void)
2280 {
2281         platform_driver_unregister(&omap_vout_driver);
2282 }
2283
2284 late_initcall(omap_vout_init);
2285 module_exit(omap_vout_cleanup);