Merge tag 'v3.8-rc1' into staging/for_v3.9
[sfrench/cifs-2.6.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         vma = find_vma(mm, virtp);
209         /* For kernel direct-mapped memory, take the easy way */
210         if (virtp >= PAGE_OFFSET) {
211                 physp = virt_to_phys((void *) virtp);
212         } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
213                 /* this will catch, kernel-allocated, mmaped-to-usermode
214                    addresses */
215                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
216         } else {
217                 /* otherwise, use get_user_pages() for general userland pages */
218                 int res, nr_pages = 1;
219                 struct page *pages;
220                 down_read(&current->mm->mmap_sem);
221
222                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
223                                 0, &pages, NULL);
224                 up_read(&current->mm->mmap_sem);
225
226                 if (res == nr_pages) {
227                         physp =  __pa(page_address(&pages[0]) +
228                                         (virtp & ~PAGE_MASK));
229                 } else {
230                         printk(KERN_WARNING VOUT_NAME
231                                         "get_user_pages failed\n");
232                         return 0;
233                 }
234         }
235
236         return physp;
237 }
238
239 /*
240  * Free the V4L2 buffers
241  */
242 void omap_vout_free_buffers(struct omap_vout_device *vout)
243 {
244         int i, numbuffers;
245
246         /* Allocate memory for the buffers */
247         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
248         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
249
250         for (i = 0; i < numbuffers; i++) {
251                 omap_vout_free_buffer(vout->buf_virt_addr[i],
252                                 vout->buffer_size);
253                 vout->buf_phy_addr[i] = 0;
254                 vout->buf_virt_addr[i] = 0;
255         }
256 }
257
258 /*
259  * Convert V4L2 rotation to DSS rotation
260  *      V4L2 understand 0, 90, 180, 270.
261  *      Convert to 0, 1, 2 and 3 respectively for DSS
262  */
263 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
264                         enum dss_rotation *rotation, bool mirror)
265 {
266         int ret = 0;
267
268         switch (v4l2_rotation) {
269         case 90:
270                 *rotation = dss_rotation_90_degree;
271                 break;
272         case 180:
273                 *rotation = dss_rotation_180_degree;
274                 break;
275         case 270:
276                 *rotation = dss_rotation_270_degree;
277                 break;
278         case 0:
279                 *rotation = dss_rotation_0_degree;
280                 break;
281         default:
282                 ret = -EINVAL;
283         }
284         return ret;
285 }
286
287 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
288 {
289         struct omapvideo_info *ovid;
290         struct v4l2_rect *crop = &vout->crop;
291         struct v4l2_pix_format *pix = &vout->pix;
292         int *cropped_offset = &vout->cropped_offset;
293         int ps = 2, line_length = 0;
294
295         ovid = &vout->vid_info;
296
297         if (ovid->rotation_type == VOUT_ROT_VRFB) {
298                 omap_vout_calculate_vrfb_offset(vout);
299         } else {
300                 vout->line_length = line_length = pix->width;
301
302                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
303                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
304                         ps = 2;
305                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
306                         ps = 4;
307                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
308                         ps = 3;
309
310                 vout->ps = ps;
311
312                 *cropped_offset = (line_length * ps) *
313                         crop->top + crop->left * ps;
314         }
315
316         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
317                         __func__, vout->cropped_offset);
318
319         return 0;
320 }
321
322 /*
323  * Convert V4L2 pixel format to DSS pixel format
324  */
325 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
326 {
327         struct omap_overlay *ovl;
328         struct omapvideo_info *ovid;
329         struct v4l2_pix_format *pix = &vout->pix;
330         enum omap_color_mode mode;
331
332         ovid = &vout->vid_info;
333         ovl = ovid->overlays[0];
334
335         switch (pix->pixelformat) {
336         case 0:
337                 break;
338         case V4L2_PIX_FMT_YUYV:
339                 mode = OMAP_DSS_COLOR_YUV2;
340                 break;
341         case V4L2_PIX_FMT_UYVY:
342                 mode = OMAP_DSS_COLOR_UYVY;
343                 break;
344         case V4L2_PIX_FMT_RGB565:
345                 mode = OMAP_DSS_COLOR_RGB16;
346                 break;
347         case V4L2_PIX_FMT_RGB24:
348                 mode = OMAP_DSS_COLOR_RGB24P;
349                 break;
350         case V4L2_PIX_FMT_RGB32:
351                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
352                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
353                 break;
354         case V4L2_PIX_FMT_BGR32:
355                 mode = OMAP_DSS_COLOR_RGBX32;
356                 break;
357         default:
358                 mode = -EINVAL;
359         }
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, pixheight, 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                 pixheight = vout->pix.width;
393                 pixwidth = vout->pix.height;
394         } else {
395                 cropheight = vout->crop.height;
396                 cropwidth = vout->crop.width;
397                 pixheight = vout->pix.height;
398                 pixwidth = vout->pix.width;
399         }
400
401         ovl->get_overlay_info(ovl, &info);
402         info.paddr = addr;
403         info.width = cropwidth;
404         info.height = cropheight;
405         info.color_mode = vout->dss_mode;
406         info.mirror = vout->mirror;
407         info.pos_x = posx;
408         info.pos_y = posy;
409         info.out_width = outw;
410         info.out_height = outh;
411         info.global_alpha = vout->win.global_alpha;
412         if (!is_rotation_enabled(vout)) {
413                 info.rotation = 0;
414                 info.rotation_type = OMAP_DSS_ROT_DMA;
415                 info.screen_width = pixwidth;
416         } else {
417                 info.rotation = vout->rotation;
418                 info.rotation_type = OMAP_DSS_ROT_VRFB;
419                 info.screen_width = 2048;
420         }
421
422         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
423                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
424                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
425                 "out_height=%d rotation_type=%d screen_width=%d\n",
426                 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
427                 info.color_mode, info.rotation, info.mirror, info.pos_x,
428                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
429                 info.screen_width);
430
431         ret = ovl->set_overlay_info(ovl, &info);
432         if (ret)
433                 goto setup_ovl_err;
434
435         return 0;
436
437 setup_ovl_err:
438         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
439         return ret;
440 }
441
442 /*
443  * Initialize the overlay structure
444  */
445 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
446 {
447         int ret = 0, i;
448         struct v4l2_window *win;
449         struct omap_overlay *ovl;
450         int posx, posy, outw, outh, temp;
451         struct omap_video_timings *timing;
452         struct omapvideo_info *ovid = &vout->vid_info;
453
454         win = &vout->win;
455         for (i = 0; i < ovid->num_overlays; i++) {
456                 struct omap_dss_device *dssdev;
457
458                 ovl = ovid->overlays[i];
459                 dssdev = ovl->get_device(ovl);
460
461                 if (!dssdev)
462                         return -EINVAL;
463
464                 timing = &dssdev->panel.timings;
465
466                 outw = win->w.width;
467                 outh = win->w.height;
468                 switch (vout->rotation) {
469                 case dss_rotation_90_degree:
470                         /* Invert the height and width for 90
471                          * and 270 degree rotation
472                          */
473                         temp = outw;
474                         outw = outh;
475                         outh = temp;
476                         posy = (timing->y_res - win->w.width) - win->w.left;
477                         posx = win->w.top;
478                         break;
479
480                 case dss_rotation_180_degree:
481                         posx = (timing->x_res - win->w.width) - win->w.left;
482                         posy = (timing->y_res - win->w.height) - win->w.top;
483                         break;
484
485                 case dss_rotation_270_degree:
486                         temp = outw;
487                         outw = outh;
488                         outh = temp;
489                         posy = win->w.left;
490                         posx = (timing->x_res - win->w.height) - win->w.top;
491                         break;
492
493                 default:
494                         posx = win->w.left;
495                         posy = win->w.top;
496                         break;
497                 }
498
499                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
500                                 outw, outh, addr);
501                 if (ret)
502                         goto omapvid_init_err;
503         }
504         return 0;
505
506 omapvid_init_err:
507         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
508         return ret;
509 }
510
511 /*
512  * Apply the changes set the go bit of DSS
513  */
514 static int omapvid_apply_changes(struct omap_vout_device *vout)
515 {
516         int i;
517         struct omap_overlay *ovl;
518         struct omapvideo_info *ovid = &vout->vid_info;
519
520         for (i = 0; i < ovid->num_overlays; i++) {
521                 struct omap_dss_device *dssdev;
522
523                 ovl = ovid->overlays[i];
524                 dssdev = ovl->get_device(ovl);
525                 if (!dssdev)
526                         return -EINVAL;
527                 ovl->manager->apply(ovl->manager);
528         }
529
530         return 0;
531 }
532
533 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
534                 unsigned int irqstatus, struct timeval timevalue)
535 {
536         u32 fid;
537
538         if (vout->first_int) {
539                 vout->first_int = 0;
540                 goto err;
541         }
542
543         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
544                 fid = 1;
545         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
546                 fid = 0;
547         else
548                 goto err;
549
550         vout->field_id ^= 1;
551         if (fid != vout->field_id) {
552                 if (fid == 0)
553                         vout->field_id = fid;
554         } else if (0 == fid) {
555                 if (vout->cur_frm == vout->next_frm)
556                         goto err;
557
558                 vout->cur_frm->ts = timevalue;
559                 vout->cur_frm->state = VIDEOBUF_DONE;
560                 wake_up_interruptible(&vout->cur_frm->done);
561                 vout->cur_frm = vout->next_frm;
562         } else {
563                 if (list_empty(&vout->dma_queue) ||
564                                 (vout->cur_frm != vout->next_frm))
565                         goto err;
566         }
567
568         return vout->field_id;
569 err:
570         return 0;
571 }
572
573 static void omap_vout_isr(void *arg, unsigned int irqstatus)
574 {
575         int ret, fid, mgr_id;
576         u32 addr, irq;
577         struct omap_overlay *ovl;
578         struct timeval timevalue;
579         struct omapvideo_info *ovid;
580         struct omap_dss_device *cur_display;
581         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
582
583         if (!vout->streaming)
584                 return;
585
586         ovid = &vout->vid_info;
587         ovl = ovid->overlays[0];
588
589         mgr_id = ovl->manager->id;
590
591         /* get the display device attached to the overlay */
592         cur_display = ovl->get_device(ovl);
593
594         if (!cur_display)
595                 return;
596
597         spin_lock(&vout->vbq_lock);
598         v4l2_get_timestamp(&timevalue);
599
600         switch (cur_display->type) {
601         case OMAP_DISPLAY_TYPE_DSI:
602         case OMAP_DISPLAY_TYPE_DPI:
603                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
604                         irq = DISPC_IRQ_VSYNC;
605                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
606                         irq = DISPC_IRQ_VSYNC2;
607                 else
608                         goto vout_isr_err;
609
610                 if (!(irqstatus & irq))
611                         goto vout_isr_err;
612                 break;
613         case OMAP_DISPLAY_TYPE_VENC:
614                 fid = omapvid_handle_interlace_display(vout, irqstatus,
615                                 timevalue);
616                 if (!fid)
617                         goto vout_isr_err;
618                 break;
619         case OMAP_DISPLAY_TYPE_HDMI:
620                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
621                         goto vout_isr_err;
622                 break;
623         default:
624                 goto vout_isr_err;
625         }
626
627         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
628                 vout->cur_frm->ts = timevalue;
629                 vout->cur_frm->state = VIDEOBUF_DONE;
630                 wake_up_interruptible(&vout->cur_frm->done);
631                 vout->cur_frm = vout->next_frm;
632         }
633
634         vout->first_int = 0;
635         if (list_empty(&vout->dma_queue))
636                 goto vout_isr_err;
637
638         vout->next_frm = list_entry(vout->dma_queue.next,
639                         struct videobuf_buffer, queue);
640         list_del(&vout->next_frm->queue);
641
642         vout->next_frm->state = VIDEOBUF_ACTIVE;
643
644         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
645                 + vout->cropped_offset;
646
647         /* First save the configuration in ovelray structure */
648         ret = omapvid_init(vout, addr);
649         if (ret)
650                 printk(KERN_ERR VOUT_NAME
651                         "failed to set overlay info\n");
652         /* Enable the pipeline and set the Go bit */
653         ret = omapvid_apply_changes(vout);
654         if (ret)
655                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
656
657 vout_isr_err:
658         spin_unlock(&vout->vbq_lock);
659 }
660
661 /* Video buffer call backs */
662
663 /*
664  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
665  * called. This is used to setup buffers and return size and count of
666  * buffers allocated. After the call to this buffer, videobuf layer will
667  * setup buffer queue depending on the size and count of buffers
668  */
669 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
670                           unsigned int *size)
671 {
672         int startindex = 0, i, j;
673         u32 phy_addr = 0, virt_addr = 0;
674         struct omap_vout_device *vout = q->priv_data;
675         struct omapvideo_info *ovid = &vout->vid_info;
676         int vid_max_buf_size;
677
678         if (!vout)
679                 return -EINVAL;
680
681         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
682                 video2_bufsize;
683
684         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
685                 return -EINVAL;
686
687         startindex = (vout->vid == OMAP_VIDEO1) ?
688                 video1_numbuffers : video2_numbuffers;
689         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
690                 *count = startindex;
691
692         if (ovid->rotation_type == VOUT_ROT_VRFB) {
693                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
694                         return -ENOMEM;
695         }
696
697         if (V4L2_MEMORY_MMAP != vout->memory)
698                 return 0;
699
700         /* Now allocated the V4L2 buffers */
701         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
702         startindex = (vout->vid == OMAP_VIDEO1) ?
703                 video1_numbuffers : video2_numbuffers;
704
705         /* Check the size of the buffer */
706         if (*size > vid_max_buf_size) {
707                 v4l2_err(&vout->vid_dev->v4l2_dev,
708                                 "buffer allocation mismatch [%u] [%u]\n",
709                                 *size, vout->buffer_size);
710                 return -ENOMEM;
711         }
712
713         for (i = startindex; i < *count; i++) {
714                 vout->buffer_size = *size;
715
716                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
717                                 &phy_addr);
718                 if (!virt_addr) {
719                         if (ovid->rotation_type == VOUT_ROT_NONE) {
720                                 break;
721                         } else {
722                                 if (!is_rotation_enabled(vout))
723                                         break;
724                         /* Free the VRFB buffers if no space for V4L2 buffers */
725                         for (j = i; j < *count; j++) {
726                                 omap_vout_free_buffer(
727                                                 vout->smsshado_virt_addr[j],
728                                                 vout->smsshado_size);
729                                 vout->smsshado_virt_addr[j] = 0;
730                                 vout->smsshado_phy_addr[j] = 0;
731                                 }
732                         }
733                 }
734                 vout->buf_virt_addr[i] = virt_addr;
735                 vout->buf_phy_addr[i] = phy_addr;
736         }
737         *count = vout->buffer_allocated = i;
738
739         return 0;
740 }
741
742 /*
743  * Free the V4L2 buffers additionally allocated than default
744  * number of buffers
745  */
746 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
747 {
748         int num_buffers = 0, i;
749
750         num_buffers = (vout->vid == OMAP_VIDEO1) ?
751                 video1_numbuffers : video2_numbuffers;
752
753         for (i = num_buffers; i < vout->buffer_allocated; i++) {
754                 if (vout->buf_virt_addr[i])
755                         omap_vout_free_buffer(vout->buf_virt_addr[i],
756                                         vout->buffer_size);
757
758                 vout->buf_virt_addr[i] = 0;
759                 vout->buf_phy_addr[i] = 0;
760         }
761         vout->buffer_allocated = num_buffers;
762 }
763
764 /*
765  * This function will be called when VIDIOC_QBUF ioctl is called.
766  * It prepare buffers before give out for the display. This function
767  * converts user space virtual address into physical address if userptr memory
768  * exchange mechanism is used. If rotation is enabled, it copies entire
769  * buffer into VRFB memory space before giving it to the DSS.
770  */
771 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
772                         struct videobuf_buffer *vb,
773                         enum v4l2_field field)
774 {
775         struct omap_vout_device *vout = q->priv_data;
776         struct omapvideo_info *ovid = &vout->vid_info;
777
778         if (VIDEOBUF_NEEDS_INIT == vb->state) {
779                 vb->width = vout->pix.width;
780                 vb->height = vout->pix.height;
781                 vb->size = vb->width * vb->height * vout->bpp;
782                 vb->field = field;
783         }
784         vb->state = VIDEOBUF_PREPARED;
785         /* if user pointer memory mechanism is used, get the physical
786          * address of the buffer
787          */
788         if (V4L2_MEMORY_USERPTR == vb->memory) {
789                 if (0 == vb->baddr)
790                         return -EINVAL;
791                 /* Physical address */
792                 vout->queued_buf_addr[vb->i] = (u8 *)
793                         omap_vout_uservirt_to_phys(vb->baddr);
794         } else {
795                 u32 addr, dma_addr;
796                 unsigned long size;
797
798                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
799                 size = (unsigned long) vb->size;
800
801                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
802                                 size, DMA_TO_DEVICE);
803                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
804                         v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
805
806                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
807         }
808
809         if (ovid->rotation_type == VOUT_ROT_VRFB)
810                 return omap_vout_prepare_vrfb(vout, vb);
811         else
812                 return 0;
813 }
814
815 /*
816  * Buffer queue function will be called from the videobuf layer when _QBUF
817  * ioctl is called. It is used to enqueue buffer, which is ready to be
818  * displayed.
819  */
820 static void omap_vout_buffer_queue(struct videobuf_queue *q,
821                           struct videobuf_buffer *vb)
822 {
823         struct omap_vout_device *vout = q->priv_data;
824
825         /* Driver is also maintainig a queue. So enqueue buffer in the driver
826          * queue */
827         list_add_tail(&vb->queue, &vout->dma_queue);
828
829         vb->state = VIDEOBUF_QUEUED;
830 }
831
832 /*
833  * Buffer release function is called from videobuf layer to release buffer
834  * which are already allocated
835  */
836 static void omap_vout_buffer_release(struct videobuf_queue *q,
837                             struct videobuf_buffer *vb)
838 {
839         struct omap_vout_device *vout = q->priv_data;
840
841         vb->state = VIDEOBUF_NEEDS_INIT;
842
843         if (V4L2_MEMORY_MMAP != vout->memory)
844                 return;
845 }
846
847 /*
848  *  File operations
849  */
850 static unsigned int omap_vout_poll(struct file *file,
851                                    struct poll_table_struct *wait)
852 {
853         struct omap_vout_device *vout = file->private_data;
854         struct videobuf_queue *q = &vout->vbq;
855
856         return videobuf_poll_stream(file, q, wait);
857 }
858
859 static void omap_vout_vm_open(struct vm_area_struct *vma)
860 {
861         struct omap_vout_device *vout = vma->vm_private_data;
862
863         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
864                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
865         vout->mmap_count++;
866 }
867
868 static void omap_vout_vm_close(struct vm_area_struct *vma)
869 {
870         struct omap_vout_device *vout = vma->vm_private_data;
871
872         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
873                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
874         vout->mmap_count--;
875 }
876
877 static struct vm_operations_struct omap_vout_vm_ops = {
878         .open   = omap_vout_vm_open,
879         .close  = omap_vout_vm_close,
880 };
881
882 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
883 {
884         int i;
885         void *pos;
886         unsigned long start = vma->vm_start;
887         unsigned long size = (vma->vm_end - vma->vm_start);
888         struct omap_vout_device *vout = file->private_data;
889         struct videobuf_queue *q = &vout->vbq;
890
891         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
892                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
893                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
894
895         /* look for the buffer to map */
896         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
897                 if (NULL == q->bufs[i])
898                         continue;
899                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
900                         continue;
901                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
902                         break;
903         }
904
905         if (VIDEO_MAX_FRAME == i) {
906                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
907                                 "offset invalid [offset=0x%lx]\n",
908                                 (vma->vm_pgoff << PAGE_SHIFT));
909                 return -EINVAL;
910         }
911         /* Check the size of the buffer */
912         if (size > vout->buffer_size) {
913                 v4l2_err(&vout->vid_dev->v4l2_dev,
914                                 "insufficient memory [%lu] [%u]\n",
915                                 size, vout->buffer_size);
916                 return -ENOMEM;
917         }
918
919         q->bufs[i]->baddr = vma->vm_start;
920
921         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
922         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
923         vma->vm_ops = &omap_vout_vm_ops;
924         vma->vm_private_data = (void *) vout;
925         pos = (void *)vout->buf_virt_addr[i];
926         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
927         while (size > 0) {
928                 unsigned long pfn;
929                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
930                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
931                         return -EAGAIN;
932                 start += PAGE_SIZE;
933                 pos += PAGE_SIZE;
934                 size -= PAGE_SIZE;
935         }
936         vout->mmap_count++;
937         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
938
939         return 0;
940 }
941
942 static int omap_vout_release(struct file *file)
943 {
944         unsigned int ret, i;
945         struct videobuf_queue *q;
946         struct omapvideo_info *ovid;
947         struct omap_vout_device *vout = file->private_data;
948
949         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
950         ovid = &vout->vid_info;
951
952         if (!vout)
953                 return 0;
954
955         q = &vout->vbq;
956         /* Disable all the overlay managers connected with this interface */
957         for (i = 0; i < ovid->num_overlays; i++) {
958                 struct omap_overlay *ovl = ovid->overlays[i];
959                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
960
961                 if (dssdev)
962                         ovl->disable(ovl);
963         }
964         /* Turn off the pipeline */
965         ret = omapvid_apply_changes(vout);
966         if (ret)
967                 v4l2_warn(&vout->vid_dev->v4l2_dev,
968                                 "Unable to apply changes\n");
969
970         /* Free all buffers */
971         omap_vout_free_extra_buffers(vout);
972
973         /* Free the VRFB buffers only if they are allocated
974          * during reqbufs.  Don't free if init time allocated
975          */
976         if (ovid->rotation_type == VOUT_ROT_VRFB) {
977                 if (!vout->vrfb_static_allocation)
978                         omap_vout_free_vrfb_buffers(vout);
979         }
980         videobuf_mmap_free(q);
981
982         /* Even if apply changes fails we should continue
983            freeing allocated memory */
984         if (vout->streaming) {
985                 u32 mask = 0;
986
987                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
988                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
989                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
990                 vout->streaming = 0;
991
992                 videobuf_streamoff(q);
993                 videobuf_queue_cancel(q);
994         }
995
996         if (vout->mmap_count != 0)
997                 vout->mmap_count = 0;
998
999         vout->opened -= 1;
1000         file->private_data = NULL;
1001
1002         if (vout->buffer_allocated)
1003                 videobuf_mmap_free(q);
1004
1005         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1006         return ret;
1007 }
1008
1009 static int omap_vout_open(struct file *file)
1010 {
1011         struct videobuf_queue *q;
1012         struct omap_vout_device *vout = NULL;
1013
1014         vout = video_drvdata(file);
1015         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1016
1017         if (vout == NULL)
1018                 return -ENODEV;
1019
1020         /* for now, we only support single open */
1021         if (vout->opened)
1022                 return -EBUSY;
1023
1024         vout->opened += 1;
1025
1026         file->private_data = vout;
1027         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1028
1029         q = &vout->vbq;
1030         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1031         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1032         video_vbq_ops.buf_release = omap_vout_buffer_release;
1033         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1034         spin_lock_init(&vout->vbq_lock);
1035
1036         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1037                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1038                         sizeof(struct videobuf_buffer), vout, NULL);
1039
1040         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1041         return 0;
1042 }
1043
1044 /*
1045  * V4L2 ioctls
1046  */
1047 static int vidioc_querycap(struct file *file, void *fh,
1048                 struct v4l2_capability *cap)
1049 {
1050         struct omap_vout_device *vout = fh;
1051
1052         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1053         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1054         cap->bus_info[0] = '\0';
1055         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1056                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1057
1058         return 0;
1059 }
1060
1061 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1062                         struct v4l2_fmtdesc *fmt)
1063 {
1064         int index = fmt->index;
1065
1066         if (index >= NUM_OUTPUT_FORMATS)
1067                 return -EINVAL;
1068
1069         fmt->flags = omap_formats[index].flags;
1070         strlcpy(fmt->description, omap_formats[index].description,
1071                         sizeof(fmt->description));
1072         fmt->pixelformat = omap_formats[index].pixelformat;
1073
1074         return 0;
1075 }
1076
1077 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1078                         struct v4l2_format *f)
1079 {
1080         struct omap_vout_device *vout = fh;
1081
1082         f->fmt.pix = vout->pix;
1083         return 0;
1084
1085 }
1086
1087 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1088                         struct v4l2_format *f)
1089 {
1090         struct omap_overlay *ovl;
1091         struct omapvideo_info *ovid;
1092         struct omap_video_timings *timing;
1093         struct omap_vout_device *vout = fh;
1094         struct omap_dss_device *dssdev;
1095
1096         ovid = &vout->vid_info;
1097         ovl = ovid->overlays[0];
1098         /* get the display device attached to the overlay */
1099         dssdev = ovl->get_device(ovl);
1100
1101         if (!dssdev)
1102                 return -EINVAL;
1103
1104         timing = &dssdev->panel.timings;
1105
1106         vout->fbuf.fmt.height = timing->y_res;
1107         vout->fbuf.fmt.width = timing->x_res;
1108
1109         omap_vout_try_format(&f->fmt.pix);
1110         return 0;
1111 }
1112
1113 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1114                         struct v4l2_format *f)
1115 {
1116         int ret, bpp;
1117         struct omap_overlay *ovl;
1118         struct omapvideo_info *ovid;
1119         struct omap_video_timings *timing;
1120         struct omap_vout_device *vout = fh;
1121         struct omap_dss_device *dssdev;
1122
1123         if (vout->streaming)
1124                 return -EBUSY;
1125
1126         mutex_lock(&vout->lock);
1127
1128         ovid = &vout->vid_info;
1129         ovl = ovid->overlays[0];
1130         dssdev = ovl->get_device(ovl);
1131
1132         /* get the display device attached to the overlay */
1133         if (!dssdev) {
1134                 ret = -EINVAL;
1135                 goto s_fmt_vid_out_exit;
1136         }
1137         timing = &dssdev->panel.timings;
1138
1139         /* We dont support RGB24-packed mode if vrfb rotation
1140          * is enabled*/
1141         if ((is_rotation_enabled(vout)) &&
1142                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1143                 ret = -EINVAL;
1144                 goto s_fmt_vid_out_exit;
1145         }
1146
1147         /* get the framebuffer parameters */
1148
1149         if (is_rotation_90_or_270(vout)) {
1150                 vout->fbuf.fmt.height = timing->x_res;
1151                 vout->fbuf.fmt.width = timing->y_res;
1152         } else {
1153                 vout->fbuf.fmt.height = timing->y_res;
1154                 vout->fbuf.fmt.width = timing->x_res;
1155         }
1156
1157         /* change to samller size is OK */
1158
1159         bpp = omap_vout_try_format(&f->fmt.pix);
1160         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1161
1162         /* try & set the new output format */
1163         vout->bpp = bpp;
1164         vout->pix = f->fmt.pix;
1165         vout->vrfb_bpp = 1;
1166
1167         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1168         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1169                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1170                 vout->vrfb_bpp = 2;
1171
1172         /* set default crop and win */
1173         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1174
1175         ret = 0;
1176
1177 s_fmt_vid_out_exit:
1178         mutex_unlock(&vout->lock);
1179         return ret;
1180 }
1181
1182 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1183                         struct v4l2_format *f)
1184 {
1185         int ret = 0;
1186         struct omap_vout_device *vout = fh;
1187         struct omap_overlay *ovl;
1188         struct omapvideo_info *ovid;
1189         struct v4l2_window *win = &f->fmt.win;
1190
1191         ovid = &vout->vid_info;
1192         ovl = ovid->overlays[0];
1193
1194         ret = omap_vout_try_window(&vout->fbuf, win);
1195
1196         if (!ret) {
1197                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1198                         win->global_alpha = 255;
1199                 else
1200                         win->global_alpha = f->fmt.win.global_alpha;
1201         }
1202
1203         return ret;
1204 }
1205
1206 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1207                         struct v4l2_format *f)
1208 {
1209         int ret = 0;
1210         struct omap_overlay *ovl;
1211         struct omapvideo_info *ovid;
1212         struct omap_vout_device *vout = fh;
1213         struct v4l2_window *win = &f->fmt.win;
1214
1215         mutex_lock(&vout->lock);
1216         ovid = &vout->vid_info;
1217         ovl = ovid->overlays[0];
1218
1219         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1220         if (!ret) {
1221                 /* Video1 plane does not support global alpha on OMAP3 */
1222                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1223                         vout->win.global_alpha = 255;
1224                 else
1225                         vout->win.global_alpha = f->fmt.win.global_alpha;
1226
1227                 vout->win.chromakey = f->fmt.win.chromakey;
1228         }
1229         mutex_unlock(&vout->lock);
1230         return ret;
1231 }
1232
1233 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1234                         struct v4l2_format *f)
1235 {
1236         u32 key_value =  0;
1237         struct omap_overlay *ovl;
1238         struct omapvideo_info *ovid;
1239         struct omap_vout_device *vout = fh;
1240         struct omap_overlay_manager_info info;
1241         struct v4l2_window *win = &f->fmt.win;
1242
1243         ovid = &vout->vid_info;
1244         ovl = ovid->overlays[0];
1245
1246         win->w = vout->win.w;
1247         win->field = vout->win.field;
1248         win->global_alpha = vout->win.global_alpha;
1249
1250         if (ovl->manager && ovl->manager->get_manager_info) {
1251                 ovl->manager->get_manager_info(ovl->manager, &info);
1252                 key_value = info.trans_key;
1253         }
1254         win->chromakey = key_value;
1255         return 0;
1256 }
1257
1258 static int vidioc_cropcap(struct file *file, void *fh,
1259                 struct v4l2_cropcap *cropcap)
1260 {
1261         struct omap_vout_device *vout = fh;
1262         struct v4l2_pix_format *pix = &vout->pix;
1263
1264         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1265                 return -EINVAL;
1266
1267         /* Width and height are always even */
1268         cropcap->bounds.width = pix->width & ~1;
1269         cropcap->bounds.height = pix->height & ~1;
1270
1271         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1272         cropcap->pixelaspect.numerator = 1;
1273         cropcap->pixelaspect.denominator = 1;
1274         return 0;
1275 }
1276
1277 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1278 {
1279         struct omap_vout_device *vout = fh;
1280
1281         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1282                 return -EINVAL;
1283         crop->c = vout->crop;
1284         return 0;
1285 }
1286
1287 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1288 {
1289         int ret = -EINVAL;
1290         struct omap_vout_device *vout = fh;
1291         struct omapvideo_info *ovid;
1292         struct omap_overlay *ovl;
1293         struct omap_video_timings *timing;
1294         struct omap_dss_device *dssdev;
1295
1296         if (vout->streaming)
1297                 return -EBUSY;
1298
1299         mutex_lock(&vout->lock);
1300         ovid = &vout->vid_info;
1301         ovl = ovid->overlays[0];
1302         /* get the display device attached to the overlay */
1303         dssdev = ovl->get_device(ovl);
1304
1305         if (!dssdev) {
1306                 ret = -EINVAL;
1307                 goto s_crop_err;
1308         }
1309
1310         timing = &dssdev->panel.timings;
1311
1312         if (is_rotation_90_or_270(vout)) {
1313                 vout->fbuf.fmt.height = timing->x_res;
1314                 vout->fbuf.fmt.width = timing->y_res;
1315         } else {
1316                 vout->fbuf.fmt.height = timing->y_res;
1317                 vout->fbuf.fmt.width = timing->x_res;
1318         }
1319
1320         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1321                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1322                                 &vout->fbuf, &crop->c);
1323
1324 s_crop_err:
1325         mutex_unlock(&vout->lock);
1326         return ret;
1327 }
1328
1329 static int vidioc_queryctrl(struct file *file, void *fh,
1330                 struct v4l2_queryctrl *ctrl)
1331 {
1332         int ret = 0;
1333
1334         switch (ctrl->id) {
1335         case V4L2_CID_ROTATE:
1336                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1337                 break;
1338         case V4L2_CID_BG_COLOR:
1339                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1340                 break;
1341         case V4L2_CID_VFLIP:
1342                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1343                 break;
1344         default:
1345                 ctrl->name[0] = '\0';
1346                 ret = -EINVAL;
1347         }
1348         return ret;
1349 }
1350
1351 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1352 {
1353         int ret = 0;
1354         struct omap_vout_device *vout = fh;
1355
1356         switch (ctrl->id) {
1357         case V4L2_CID_ROTATE:
1358                 ctrl->value = vout->control[0].value;
1359                 break;
1360         case V4L2_CID_BG_COLOR:
1361         {
1362                 struct omap_overlay_manager_info info;
1363                 struct omap_overlay *ovl;
1364
1365                 ovl = vout->vid_info.overlays[0];
1366                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1367                         ret = -EINVAL;
1368                         break;
1369                 }
1370
1371                 ovl->manager->get_manager_info(ovl->manager, &info);
1372                 ctrl->value = info.default_color;
1373                 break;
1374         }
1375         case V4L2_CID_VFLIP:
1376                 ctrl->value = vout->control[2].value;
1377                 break;
1378         default:
1379                 ret = -EINVAL;
1380         }
1381         return ret;
1382 }
1383
1384 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1385 {
1386         int ret = 0;
1387         struct omap_vout_device *vout = fh;
1388
1389         switch (a->id) {
1390         case V4L2_CID_ROTATE:
1391         {
1392                 struct omapvideo_info *ovid;
1393                 int rotation = a->value;
1394
1395                 ovid = &vout->vid_info;
1396
1397                 mutex_lock(&vout->lock);
1398                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1399                         mutex_unlock(&vout->lock);
1400                         ret = -ERANGE;
1401                         break;
1402                 }
1403
1404                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1405                         mutex_unlock(&vout->lock);
1406                         ret = -EINVAL;
1407                         break;
1408                 }
1409
1410                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1411                                                         vout->mirror)) {
1412                         mutex_unlock(&vout->lock);
1413                         ret = -EINVAL;
1414                         break;
1415                 }
1416
1417                 vout->control[0].value = rotation;
1418                 mutex_unlock(&vout->lock);
1419                 break;
1420         }
1421         case V4L2_CID_BG_COLOR:
1422         {
1423                 struct omap_overlay *ovl;
1424                 unsigned int  color = a->value;
1425                 struct omap_overlay_manager_info info;
1426
1427                 ovl = vout->vid_info.overlays[0];
1428
1429                 mutex_lock(&vout->lock);
1430                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1431                         mutex_unlock(&vout->lock);
1432                         ret = -EINVAL;
1433                         break;
1434                 }
1435
1436                 ovl->manager->get_manager_info(ovl->manager, &info);
1437                 info.default_color = color;
1438                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1439                         mutex_unlock(&vout->lock);
1440                         ret = -EINVAL;
1441                         break;
1442                 }
1443
1444                 vout->control[1].value = color;
1445                 mutex_unlock(&vout->lock);
1446                 break;
1447         }
1448         case V4L2_CID_VFLIP:
1449         {
1450                 struct omap_overlay *ovl;
1451                 struct omapvideo_info *ovid;
1452                 unsigned int  mirror = a->value;
1453
1454                 ovid = &vout->vid_info;
1455                 ovl = ovid->overlays[0];
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) || (req->count < 0))
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 = 1;
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         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1662
1663         /* First save the configuration in ovelray structure */
1664         ret = omapvid_init(vout, addr);
1665         if (ret)
1666                 v4l2_err(&vout->vid_dev->v4l2_dev,
1667                                 "failed to set overlay info\n");
1668         /* Enable the pipeline and set the Go bit */
1669         ret = omapvid_apply_changes(vout);
1670         if (ret)
1671                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1672
1673         for (j = 0; j < ovid->num_overlays; j++) {
1674                 struct omap_overlay *ovl = ovid->overlays[j];
1675                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1676
1677                 if (dssdev) {
1678                         ret = ovl->enable(ovl);
1679                         if (ret)
1680                                 goto streamon_err1;
1681                 }
1682         }
1683
1684         ret = 0;
1685
1686 streamon_err1:
1687         if (ret)
1688                 ret = videobuf_streamoff(q);
1689 streamon_err:
1690         mutex_unlock(&vout->lock);
1691         return ret;
1692 }
1693
1694 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1695 {
1696         u32 mask = 0;
1697         int ret = 0, j;
1698         struct omap_vout_device *vout = fh;
1699         struct omapvideo_info *ovid = &vout->vid_info;
1700
1701         if (!vout->streaming)
1702                 return -EINVAL;
1703
1704         vout->streaming = 0;
1705         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1706                 | DISPC_IRQ_VSYNC2;
1707
1708         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1709
1710         for (j = 0; j < ovid->num_overlays; j++) {
1711                 struct omap_overlay *ovl = ovid->overlays[j];
1712                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1713
1714                 if (dssdev)
1715                         ovl->disable(ovl);
1716         }
1717
1718         /* Turn of the pipeline */
1719         ret = omapvid_apply_changes(vout);
1720         if (ret)
1721                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1722                                 " streamoff\n");
1723
1724         INIT_LIST_HEAD(&vout->dma_queue);
1725         ret = videobuf_streamoff(&vout->vbq);
1726
1727         return ret;
1728 }
1729
1730 static int vidioc_s_fbuf(struct file *file, void *fh,
1731                                 const struct v4l2_framebuffer *a)
1732 {
1733         int enable = 0;
1734         struct omap_overlay *ovl;
1735         struct omapvideo_info *ovid;
1736         struct omap_vout_device *vout = fh;
1737         struct omap_overlay_manager_info info;
1738         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1739
1740         ovid = &vout->vid_info;
1741         ovl = ovid->overlays[0];
1742
1743         /* OMAP DSS doesn't support Source and Destination color
1744            key together */
1745         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1746                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1747                 return -EINVAL;
1748         /* OMAP DSS Doesn't support the Destination color key
1749            and alpha blending together */
1750         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1751                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1752                 return -EINVAL;
1753
1754         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1755                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1756                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1757         } else
1758                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1759
1760         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1761                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1762                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1763         } else
1764                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1765
1766         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1767                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1768                 enable = 1;
1769         else
1770                 enable = 0;
1771         if (ovl->manager && ovl->manager->get_manager_info &&
1772                         ovl->manager->set_manager_info) {
1773
1774                 ovl->manager->get_manager_info(ovl->manager, &info);
1775                 info.trans_enabled = enable;
1776                 info.trans_key_type = key_type;
1777                 info.trans_key = vout->win.chromakey;
1778
1779                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1780                         return -EINVAL;
1781         }
1782         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1783                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1784                 enable = 1;
1785         } else {
1786                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1787                 enable = 0;
1788         }
1789         if (ovl->manager && ovl->manager->get_manager_info &&
1790                         ovl->manager->set_manager_info) {
1791                 ovl->manager->get_manager_info(ovl->manager, &info);
1792                 /* enable this only if there is no zorder cap */
1793                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1794                         info.partial_alpha_enabled = enable;
1795                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1796                         return -EINVAL;
1797         }
1798
1799         return 0;
1800 }
1801
1802 static int vidioc_g_fbuf(struct file *file, void *fh,
1803                 struct v4l2_framebuffer *a)
1804 {
1805         struct omap_overlay *ovl;
1806         struct omapvideo_info *ovid;
1807         struct omap_vout_device *vout = fh;
1808         struct omap_overlay_manager_info info;
1809
1810         ovid = &vout->vid_info;
1811         ovl = ovid->overlays[0];
1812
1813         /* The video overlay must stay within the framebuffer and can't be
1814            positioned independently. */
1815         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1816         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1817                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1818
1819         if (ovl->manager && ovl->manager->get_manager_info) {
1820                 ovl->manager->get_manager_info(ovl->manager, &info);
1821                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1822                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1823                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1824                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1825         }
1826         if (ovl->manager && ovl->manager->get_manager_info) {
1827                 ovl->manager->get_manager_info(ovl->manager, &info);
1828                 if (info.partial_alpha_enabled)
1829                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1830         }
1831
1832         return 0;
1833 }
1834
1835 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1836         .vidioc_querycap                        = vidioc_querycap,
1837         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1838         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1839         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1840         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1841         .vidioc_queryctrl                       = vidioc_queryctrl,
1842         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1843         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1844         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1845         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1846         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1847         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1848         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1849         .vidioc_cropcap                         = vidioc_cropcap,
1850         .vidioc_g_crop                          = vidioc_g_crop,
1851         .vidioc_s_crop                          = vidioc_s_crop,
1852         .vidioc_reqbufs                         = vidioc_reqbufs,
1853         .vidioc_querybuf                        = vidioc_querybuf,
1854         .vidioc_qbuf                            = vidioc_qbuf,
1855         .vidioc_dqbuf                           = vidioc_dqbuf,
1856         .vidioc_streamon                        = vidioc_streamon,
1857         .vidioc_streamoff                       = vidioc_streamoff,
1858 };
1859
1860 static const struct v4l2_file_operations omap_vout_fops = {
1861         .owner          = THIS_MODULE,
1862         .poll           = omap_vout_poll,
1863         .unlocked_ioctl = video_ioctl2,
1864         .mmap           = omap_vout_mmap,
1865         .open           = omap_vout_open,
1866         .release        = omap_vout_release,
1867 };
1868
1869 /* Init functions used during driver initialization */
1870 /* Initial setup of video_data */
1871 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1872 {
1873         struct video_device *vfd;
1874         struct v4l2_pix_format *pix;
1875         struct v4l2_control *control;
1876         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1877         struct omap_dss_device *display = ovl->get_device(ovl);
1878
1879         /* set the default pix */
1880         pix = &vout->pix;
1881
1882         /* Set the default picture of QVGA  */
1883         pix->width = QQVGA_WIDTH;
1884         pix->height = QQVGA_HEIGHT;
1885
1886         /* Default pixel format is RGB 5-6-5 */
1887         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1888         pix->field = V4L2_FIELD_ANY;
1889         pix->bytesperline = pix->width * 2;
1890         pix->sizeimage = pix->bytesperline * pix->height;
1891         pix->priv = 0;
1892         pix->colorspace = V4L2_COLORSPACE_JPEG;
1893
1894         vout->bpp = RGB565_BPP;
1895         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1896         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1897
1898         /* Set the data structures for the overlay parameters*/
1899         vout->win.global_alpha = 255;
1900         vout->fbuf.flags = 0;
1901         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1902                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1903         vout->win.chromakey = 0;
1904
1905         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1906
1907         /*Initialize the control variables for
1908           rotation, flipping and background color. */
1909         control = vout->control;
1910         control[0].id = V4L2_CID_ROTATE;
1911         control[0].value = 0;
1912         vout->rotation = 0;
1913         vout->mirror = 0;
1914         vout->control[2].id = V4L2_CID_HFLIP;
1915         vout->control[2].value = 0;
1916         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1917                 vout->vrfb_bpp = 2;
1918
1919         control[1].id = V4L2_CID_BG_COLOR;
1920         control[1].value = 0;
1921
1922         /* initialize the video_device struct */
1923         vfd = vout->vfd = video_device_alloc();
1924
1925         if (!vfd) {
1926                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1927                                 " video device struct\n");
1928                 return -ENOMEM;
1929         }
1930         vfd->release = video_device_release;
1931         vfd->ioctl_ops = &vout_ioctl_ops;
1932
1933         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1934
1935         vfd->fops = &omap_vout_fops;
1936         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1937         vfd->vfl_dir = VFL_DIR_TX;
1938         mutex_init(&vout->lock);
1939
1940         vfd->minor = -1;
1941         return 0;
1942
1943 }
1944
1945 /* Setup video buffers */
1946 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1947                 int vid_num)
1948 {
1949         u32 numbuffers;
1950         int ret = 0, i;
1951         struct omapvideo_info *ovid;
1952         struct omap_vout_device *vout;
1953         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1954         struct omap2video_device *vid_dev =
1955                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1956
1957         vout = vid_dev->vouts[vid_num];
1958         ovid = &vout->vid_info;
1959
1960         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1961         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1962         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1963
1964         for (i = 0; i < numbuffers; i++) {
1965                 vout->buf_virt_addr[i] =
1966                         omap_vout_alloc_buffer(vout->buffer_size,
1967                                         (u32 *) &vout->buf_phy_addr[i]);
1968                 if (!vout->buf_virt_addr[i]) {
1969                         numbuffers = i;
1970                         ret = -ENOMEM;
1971                         goto free_buffers;
1972                 }
1973         }
1974
1975         vout->cropped_offset = 0;
1976
1977         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1978                 int static_vrfb_allocation = (vid_num == 0) ?
1979                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1980                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1981                                 static_vrfb_allocation);
1982         }
1983
1984         return ret;
1985
1986 free_buffers:
1987         for (i = 0; i < numbuffers; i++) {
1988                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1989                                                 vout->buffer_size);
1990                 vout->buf_virt_addr[i] = 0;
1991                 vout->buf_phy_addr[i] = 0;
1992         }
1993         return ret;
1994
1995 }
1996
1997 /* Create video out devices */
1998 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1999 {
2000         int ret = 0, k;
2001         struct omap_vout_device *vout;
2002         struct video_device *vfd = NULL;
2003         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2004         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2005                         struct omap2video_device, v4l2_dev);
2006
2007         for (k = 0; k < pdev->num_resources; k++) {
2008
2009                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2010                 if (!vout) {
2011                         dev_err(&pdev->dev, ": could not allocate memory\n");
2012                         return -ENOMEM;
2013                 }
2014
2015                 vout->vid = k;
2016                 vid_dev->vouts[k] = vout;
2017                 vout->vid_dev = vid_dev;
2018                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2019                 if (pdev->num_resources == 1)
2020                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2021                 else
2022                         /* Else select video1 and video2 one by one. */
2023                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2024                 vout->vid_info.num_overlays = 1;
2025                 vout->vid_info.id = k + 1;
2026
2027                 /* Set VRFB as rotation_type for omap2 and omap3 */
2028                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2029                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2030
2031                 /* Setup the default configuration for the video devices
2032                  */
2033                 if (omap_vout_setup_video_data(vout) != 0) {
2034                         ret = -ENOMEM;
2035                         goto error;
2036                 }
2037
2038                 /* Allocate default number of buffers for the video streaming
2039                  * and reserve the VRFB space for rotation
2040                  */
2041                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2042                         ret = -ENOMEM;
2043                         goto error1;
2044                 }
2045
2046                 /* Register the Video device with V4L2
2047                  */
2048                 vfd = vout->vfd;
2049                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2050                         dev_err(&pdev->dev, ": Could not register "
2051                                         "Video for Linux device\n");
2052                         vfd->minor = -1;
2053                         ret = -ENODEV;
2054                         goto error2;
2055                 }
2056                 video_set_drvdata(vfd, vout);
2057
2058                 dev_info(&pdev->dev, ": registered and initialized"
2059                                 " video device %d\n", vfd->minor);
2060                 if (k == (pdev->num_resources - 1))
2061                         return 0;
2062
2063                 continue;
2064 error2:
2065                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2066                         omap_vout_release_vrfb(vout);
2067                 omap_vout_free_buffers(vout);
2068 error1:
2069                 video_device_release(vfd);
2070 error:
2071                 kfree(vout);
2072                 return ret;
2073         }
2074
2075         return -ENODEV;
2076 }
2077 /* Driver functions */
2078 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2079 {
2080         struct video_device *vfd;
2081         struct omapvideo_info *ovid;
2082
2083         if (!vout)
2084                 return;
2085
2086         vfd = vout->vfd;
2087         ovid = &vout->vid_info;
2088         if (vfd) {
2089                 if (!video_is_registered(vfd)) {
2090                         /*
2091                          * The device was never registered, so release the
2092                          * video_device struct directly.
2093                          */
2094                         video_device_release(vfd);
2095                 } else {
2096                         /*
2097                          * The unregister function will release the video_device
2098                          * struct as well as unregistering it.
2099                          */
2100                         video_unregister_device(vfd);
2101                 }
2102         }
2103         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2104                 omap_vout_release_vrfb(vout);
2105                 /* Free the VRFB buffer if allocated
2106                  * init time
2107                  */
2108                 if (vout->vrfb_static_allocation)
2109                         omap_vout_free_vrfb_buffers(vout);
2110         }
2111         omap_vout_free_buffers(vout);
2112
2113         kfree(vout);
2114 }
2115
2116 static int omap_vout_remove(struct platform_device *pdev)
2117 {
2118         int k;
2119         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2120         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2121                         omap2video_device, v4l2_dev);
2122
2123         v4l2_device_unregister(v4l2_dev);
2124         for (k = 0; k < pdev->num_resources; k++)
2125                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2126
2127         for (k = 0; k < vid_dev->num_displays; k++) {
2128                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2129                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2130
2131                 omap_dss_put_device(vid_dev->displays[k]);
2132         }
2133         kfree(vid_dev);
2134         return 0;
2135 }
2136
2137 static int __init omap_vout_probe(struct platform_device *pdev)
2138 {
2139         int ret = 0, i;
2140         struct omap_overlay *ovl;
2141         struct omap_dss_device *dssdev = NULL;
2142         struct omap_dss_device *def_display;
2143         struct omap2video_device *vid_dev = NULL;
2144
2145         ret = omapdss_compat_init();
2146         if (ret) {
2147                 dev_err(&pdev->dev, "failed to init dss\n");
2148                 return ret;
2149         }
2150
2151         if (pdev->num_resources == 0) {
2152                 dev_err(&pdev->dev, "probed for an unknown device\n");
2153                 ret = -ENODEV;
2154                 goto err_dss_init;
2155         }
2156
2157         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2158         if (vid_dev == NULL) {
2159                 ret = -ENOMEM;
2160                 goto err_dss_init;
2161         }
2162
2163         vid_dev->num_displays = 0;
2164         for_each_dss_dev(dssdev) {
2165                 omap_dss_get_device(dssdev);
2166
2167                 if (!dssdev->driver) {
2168                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2169                                         dssdev->name);
2170                         omap_dss_put_device(dssdev);
2171                         continue;
2172                 }
2173
2174                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2175         }
2176
2177         if (vid_dev->num_displays == 0) {
2178                 dev_err(&pdev->dev, "no displays\n");
2179                 ret = -EINVAL;
2180                 goto probe_err0;
2181         }
2182
2183         vid_dev->num_overlays = omap_dss_get_num_overlays();
2184         for (i = 0; i < vid_dev->num_overlays; i++)
2185                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2186
2187         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2188         for (i = 0; i < vid_dev->num_managers; i++)
2189                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2190
2191         /* Get the Video1 overlay and video2 overlay.
2192          * Setup the Display attached to that overlays
2193          */
2194         for (i = 1; i < vid_dev->num_overlays; i++) {
2195                 ovl = omap_dss_get_overlay(i);
2196                 dssdev = ovl->get_device(ovl);
2197
2198                 if (dssdev) {
2199                         def_display = dssdev;
2200                 } else {
2201                         dev_warn(&pdev->dev, "cannot find display\n");
2202                         def_display = NULL;
2203                 }
2204                 if (def_display) {
2205                         struct omap_dss_driver *dssdrv = def_display->driver;
2206
2207                         ret = dssdrv->enable(def_display);
2208                         if (ret) {
2209                                 /* Here we are not considering a error
2210                                  *  as display may be enabled by frame
2211                                  *  buffer driver
2212                                  */
2213                                 dev_warn(&pdev->dev,
2214                                         "'%s' Display already enabled\n",
2215                                         def_display->name);
2216                         }
2217                 }
2218         }
2219
2220         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2221                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2222                 ret = -ENODEV;
2223                 goto probe_err1;
2224         }
2225
2226         ret = omap_vout_create_video_devices(pdev);
2227         if (ret)
2228                 goto probe_err2;
2229
2230         for (i = 0; i < vid_dev->num_displays; i++) {
2231                 struct omap_dss_device *display = vid_dev->displays[i];
2232
2233                 if (display->driver->update)
2234                         display->driver->update(display, 0, 0,
2235                                         display->panel.timings.x_res,
2236                                         display->panel.timings.y_res);
2237         }
2238         return 0;
2239
2240 probe_err2:
2241         v4l2_device_unregister(&vid_dev->v4l2_dev);
2242 probe_err1:
2243         for (i = 1; i < vid_dev->num_overlays; i++) {
2244                 def_display = NULL;
2245                 ovl = omap_dss_get_overlay(i);
2246                 dssdev = ovl->get_device(ovl);
2247
2248                 if (dssdev)
2249                         def_display = dssdev;
2250
2251                 if (def_display && def_display->driver)
2252                         def_display->driver->disable(def_display);
2253         }
2254 probe_err0:
2255         kfree(vid_dev);
2256 err_dss_init:
2257         omapdss_compat_uninit();
2258         return ret;
2259 }
2260
2261 static struct platform_driver omap_vout_driver = {
2262         .driver = {
2263                 .name = VOUT_NAME,
2264         },
2265         .remove = omap_vout_remove,
2266 };
2267
2268 static int __init omap_vout_init(void)
2269 {
2270         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2271                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2272                 return -EINVAL;
2273         }
2274         return 0;
2275 }
2276
2277 static void omap_vout_cleanup(void)
2278 {
2279         platform_driver_unregister(&omap_vout_driver);
2280 }
2281
2282 late_initcall(omap_vout_init);
2283 module_exit(omap_vout_cleanup);