a277f95091ef2b481b369dca5cacc30cbf04afe4
[linux-2.6.git] / drivers / media / video / 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 <plat/dma.h>
48 #include <plat/vrfb.h>
49 #include <video/omapdss.h>
50
51 #include "omap_voutlib.h"
52 #include "omap_voutdef.h"
53 #include "omap_vout_vrfb.h"
54
55 MODULE_AUTHOR("Texas Instruments");
56 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
57 MODULE_LICENSE("GPL");
58
59 /* Driver Configuration macros */
60 #define VOUT_NAME               "omap_vout"
61
62 enum omap_vout_channels {
63         OMAP_VIDEO1,
64         OMAP_VIDEO2,
65 };
66
67 static struct videobuf_queue_ops video_vbq_ops;
68 /* Variables configurable through module params*/
69 static u32 video1_numbuffers = 3;
70 static u32 video2_numbuffers = 3;
71 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
72 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
73 static bool vid1_static_vrfb_alloc;
74 static bool vid2_static_vrfb_alloc;
75 static bool debug;
76
77 /* Module parameters */
78 module_param(video1_numbuffers, uint, S_IRUGO);
79 MODULE_PARM_DESC(video1_numbuffers,
80         "Number of buffers to be allocated at init time for Video1 device.");
81
82 module_param(video2_numbuffers, uint, S_IRUGO);
83 MODULE_PARM_DESC(video2_numbuffers,
84         "Number of buffers to be allocated at init time for Video2 device.");
85
86 module_param(video1_bufsize, uint, S_IRUGO);
87 MODULE_PARM_DESC(video1_bufsize,
88         "Size of the buffer to be allocated for video1 device");
89
90 module_param(video2_bufsize, uint, S_IRUGO);
91 MODULE_PARM_DESC(video2_bufsize,
92         "Size of the buffer to be allocated for video2 device");
93
94 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
95 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
96         "Static allocation of the VRFB buffer for video1 device");
97
98 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
99 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
100         "Static allocation of the VRFB buffer for video2 device");
101
102 module_param(debug, bool, S_IRUGO);
103 MODULE_PARM_DESC(debug, "Debug level (0-1)");
104
105 /* list of image formats supported by OMAP2 video pipelines */
106 static const struct v4l2_fmtdesc omap_formats[] = {
107         {
108                 /* Note:  V4L2 defines RGB565 as:
109                  *
110                  *      Byte 0                    Byte 1
111                  *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
112                  *
113                  * We interpret RGB565 as:
114                  *
115                  *      Byte 0                    Byte 1
116                  *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
117                  */
118                 .description = "RGB565, le",
119                 .pixelformat = V4L2_PIX_FMT_RGB565,
120         },
121         {
122                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
123                  *  this for RGB24 unpack mode, the last 8 bits are ignored
124                  * */
125                 .description = "RGB32, le",
126                 .pixelformat = V4L2_PIX_FMT_RGB32,
127         },
128         {
129                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
130                  *        this for RGB24 packed mode
131                  *
132                  */
133                 .description = "RGB24, le",
134                 .pixelformat = V4L2_PIX_FMT_RGB24,
135         },
136         {
137                 .description = "YUYV (YUV 4:2:2), packed",
138                 .pixelformat = V4L2_PIX_FMT_YUYV,
139         },
140         {
141                 .description = "UYVY, packed",
142                 .pixelformat = V4L2_PIX_FMT_UYVY,
143         },
144 };
145
146 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
147
148 /*
149  * Try format
150  */
151 static int omap_vout_try_format(struct v4l2_pix_format *pix)
152 {
153         int ifmt, bpp = 0;
154
155         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
156                                                 (u32)VID_MAX_HEIGHT);
157         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
158
159         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
160                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
161                         break;
162         }
163
164         if (ifmt == NUM_OUTPUT_FORMATS)
165                 ifmt = 0;
166
167         pix->pixelformat = omap_formats[ifmt].pixelformat;
168         pix->field = V4L2_FIELD_ANY;
169         pix->priv = 0;
170
171         switch (pix->pixelformat) {
172         case V4L2_PIX_FMT_YUYV:
173         case V4L2_PIX_FMT_UYVY:
174         default:
175                 pix->colorspace = V4L2_COLORSPACE_JPEG;
176                 bpp = YUYV_BPP;
177                 break;
178         case V4L2_PIX_FMT_RGB565:
179         case V4L2_PIX_FMT_RGB565X:
180                 pix->colorspace = V4L2_COLORSPACE_SRGB;
181                 bpp = RGB565_BPP;
182                 break;
183         case V4L2_PIX_FMT_RGB24:
184                 pix->colorspace = V4L2_COLORSPACE_SRGB;
185                 bpp = RGB24_BPP;
186                 break;
187         case V4L2_PIX_FMT_RGB32:
188         case V4L2_PIX_FMT_BGR32:
189                 pix->colorspace = V4L2_COLORSPACE_SRGB;
190                 bpp = RGB32_BPP;
191                 break;
192         }
193         pix->bytesperline = pix->width * bpp;
194         pix->sizeimage = pix->bytesperline * pix->height;
195
196         return bpp;
197 }
198
199 /*
200  * omap_vout_uservirt_to_phys: This inline function is used to convert user
201  * space virtual address to physical address.
202  */
203 static u32 omap_vout_uservirt_to_phys(u32 virtp)
204 {
205         unsigned long physp = 0;
206         struct vm_area_struct *vma;
207         struct mm_struct *mm = current->mm;
208
209         vma = find_vma(mm, virtp);
210         /* For kernel direct-mapped memory, take the easy way */
211         if (virtp >= PAGE_OFFSET) {
212                 physp = virt_to_phys((void *) virtp);
213         } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
214                 /* this will catch, kernel-allocated, mmaped-to-usermode
215                    addresses */
216                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
217         } else {
218                 /* otherwise, use get_user_pages() for general userland pages */
219                 int res, nr_pages = 1;
220                 struct page *pages;
221                 down_read(&current->mm->mmap_sem);
222
223                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
224                                 0, &pages, NULL);
225                 up_read(&current->mm->mmap_sem);
226
227                 if (res == nr_pages) {
228                         physp =  __pa(page_address(&pages[0]) +
229                                         (virtp & ~PAGE_MASK));
230                 } else {
231                         printk(KERN_WARNING VOUT_NAME
232                                         "get_user_pages failed\n");
233                         return 0;
234                 }
235         }
236
237         return physp;
238 }
239
240 /*
241  * Free the V4L2 buffers
242  */
243 void omap_vout_free_buffers(struct omap_vout_device *vout)
244 {
245         int i, numbuffers;
246
247         /* Allocate memory for the buffers */
248         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
249         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
250
251         for (i = 0; i < numbuffers; i++) {
252                 omap_vout_free_buffer(vout->buf_virt_addr[i],
253                                 vout->buffer_size);
254                 vout->buf_phy_addr[i] = 0;
255                 vout->buf_virt_addr[i] = 0;
256         }
257 }
258
259 /*
260  * Convert V4L2 rotation to DSS rotation
261  *      V4L2 understand 0, 90, 180, 270.
262  *      Convert to 0, 1, 2 and 3 respectively for DSS
263  */
264 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
265                         enum dss_rotation *rotation, bool mirror)
266 {
267         int ret = 0;
268
269         switch (v4l2_rotation) {
270         case 90:
271                 *rotation = dss_rotation_90_degree;
272                 break;
273         case 180:
274                 *rotation = dss_rotation_180_degree;
275                 break;
276         case 270:
277                 *rotation = dss_rotation_270_degree;
278                 break;
279         case 0:
280                 *rotation = dss_rotation_0_degree;
281                 break;
282         default:
283                 ret = -EINVAL;
284         }
285         return ret;
286 }
287
288 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
289 {
290         struct omapvideo_info *ovid;
291         struct v4l2_rect *crop = &vout->crop;
292         struct v4l2_pix_format *pix = &vout->pix;
293         int *cropped_offset = &vout->cropped_offset;
294         int ps = 2, line_length = 0;
295
296         ovid = &vout->vid_info;
297
298         if (ovid->rotation_type == VOUT_ROT_VRFB) {
299                 omap_vout_calculate_vrfb_offset(vout);
300         } else {
301                 vout->line_length = line_length = pix->width;
302
303                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
304                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
305                         ps = 2;
306                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
307                         ps = 4;
308                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
309                         ps = 3;
310
311                 vout->ps = ps;
312
313                 *cropped_offset = (line_length * ps) *
314                         crop->top + crop->left * ps;
315         }
316
317         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
318                         __func__, vout->cropped_offset);
319
320         return 0;
321 }
322
323 /*
324  * Convert V4L2 pixel format to DSS pixel format
325  */
326 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
327 {
328         struct omap_overlay *ovl;
329         struct omapvideo_info *ovid;
330         struct v4l2_pix_format *pix = &vout->pix;
331         enum omap_color_mode mode;
332
333         ovid = &vout->vid_info;
334         ovl = ovid->overlays[0];
335
336         switch (pix->pixelformat) {
337         case 0:
338                 break;
339         case V4L2_PIX_FMT_YUYV:
340                 mode = OMAP_DSS_COLOR_YUV2;
341                 break;
342         case V4L2_PIX_FMT_UYVY:
343                 mode = OMAP_DSS_COLOR_UYVY;
344                 break;
345         case V4L2_PIX_FMT_RGB565:
346                 mode = OMAP_DSS_COLOR_RGB16;
347                 break;
348         case V4L2_PIX_FMT_RGB24:
349                 mode = OMAP_DSS_COLOR_RGB24P;
350                 break;
351         case V4L2_PIX_FMT_RGB32:
352                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
353                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
354                 break;
355         case V4L2_PIX_FMT_BGR32:
356                 mode = OMAP_DSS_COLOR_RGBX32;
357                 break;
358         default:
359                 mode = -EINVAL;
360         }
361         return mode;
362 }
363
364 /*
365  * Setup the overlay
366  */
367 static int omapvid_setup_overlay(struct omap_vout_device *vout,
368                 struct omap_overlay *ovl, int posx, int posy, int outw,
369                 int outh, u32 addr)
370 {
371         int ret = 0;
372         struct omap_overlay_info info;
373         int cropheight, cropwidth, pixheight, pixwidth;
374
375         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
376                         (outw != vout->pix.width || outh != vout->pix.height)) {
377                 ret = -EINVAL;
378                 goto setup_ovl_err;
379         }
380
381         vout->dss_mode = video_mode_to_dss_mode(vout);
382         if (vout->dss_mode == -EINVAL) {
383                 ret = -EINVAL;
384                 goto setup_ovl_err;
385         }
386
387         /* Setup the input plane parameters according to
388          * rotation value selected.
389          */
390         if (is_rotation_90_or_270(vout)) {
391                 cropheight = vout->crop.width;
392                 cropwidth = vout->crop.height;
393                 pixheight = vout->pix.width;
394                 pixwidth = vout->pix.height;
395         } else {
396                 cropheight = vout->crop.height;
397                 cropwidth = vout->crop.width;
398                 pixheight = vout->pix.height;
399                 pixwidth = vout->pix.width;
400         }
401
402         ovl->get_overlay_info(ovl, &info);
403         info.paddr = addr;
404         info.width = cropwidth;
405         info.height = cropheight;
406         info.color_mode = vout->dss_mode;
407         info.mirror = vout->mirror;
408         info.pos_x = posx;
409         info.pos_y = posy;
410         info.out_width = outw;
411         info.out_height = outh;
412         info.global_alpha = vout->win.global_alpha;
413         if (!is_rotation_enabled(vout)) {
414                 info.rotation = 0;
415                 info.rotation_type = OMAP_DSS_ROT_DMA;
416                 info.screen_width = pixwidth;
417         } else {
418                 info.rotation = vout->rotation;
419                 info.rotation_type = OMAP_DSS_ROT_VRFB;
420                 info.screen_width = 2048;
421         }
422
423         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
424                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
425                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
426                 "out_height=%d rotation_type=%d screen_width=%d\n",
427                 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
428                 info.color_mode, info.rotation, info.mirror, info.pos_x,
429                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
430                 info.screen_width);
431
432         ret = ovl->set_overlay_info(ovl, &info);
433         if (ret)
434                 goto setup_ovl_err;
435
436         return 0;
437
438 setup_ovl_err:
439         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
440         return ret;
441 }
442
443 /*
444  * Initialize the overlay structure
445  */
446 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
447 {
448         int ret = 0, i;
449         struct v4l2_window *win;
450         struct omap_overlay *ovl;
451         int posx, posy, outw, outh, temp;
452         struct omap_video_timings *timing;
453         struct omapvideo_info *ovid = &vout->vid_info;
454
455         win = &vout->win;
456         for (i = 0; i < ovid->num_overlays; i++) {
457                 ovl = ovid->overlays[i];
458                 if (!ovl->manager || !ovl->manager->device)
459                         return -EINVAL;
460
461                 timing = &ovl->manager->device->panel.timings;
462
463                 outw = win->w.width;
464                 outh = win->w.height;
465                 switch (vout->rotation) {
466                 case dss_rotation_90_degree:
467                         /* Invert the height and width for 90
468                          * and 270 degree rotation
469                          */
470                         temp = outw;
471                         outw = outh;
472                         outh = temp;
473                         posy = (timing->y_res - win->w.width) - win->w.left;
474                         posx = win->w.top;
475                         break;
476
477                 case dss_rotation_180_degree:
478                         posx = (timing->x_res - win->w.width) - win->w.left;
479                         posy = (timing->y_res - win->w.height) - win->w.top;
480                         break;
481
482                 case dss_rotation_270_degree:
483                         temp = outw;
484                         outw = outh;
485                         outh = temp;
486                         posy = win->w.left;
487                         posx = (timing->x_res - win->w.height) - win->w.top;
488                         break;
489
490                 default:
491                         posx = win->w.left;
492                         posy = win->w.top;
493                         break;
494                 }
495
496                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
497                                 outw, outh, addr);
498                 if (ret)
499                         goto omapvid_init_err;
500         }
501         return 0;
502
503 omapvid_init_err:
504         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
505         return ret;
506 }
507
508 /*
509  * Apply the changes set the go bit of DSS
510  */
511 static int omapvid_apply_changes(struct omap_vout_device *vout)
512 {
513         int i;
514         struct omap_overlay *ovl;
515         struct omapvideo_info *ovid = &vout->vid_info;
516
517         for (i = 0; i < ovid->num_overlays; i++) {
518                 ovl = ovid->overlays[i];
519                 if (!ovl->manager || !ovl->manager->device)
520                         return -EINVAL;
521                 ovl->manager->apply(ovl->manager);
522         }
523
524         return 0;
525 }
526
527 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
528                 unsigned int irqstatus, struct timeval timevalue)
529 {
530         u32 fid;
531
532         if (vout->first_int) {
533                 vout->first_int = 0;
534                 goto err;
535         }
536
537         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
538                 fid = 1;
539         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
540                 fid = 0;
541         else
542                 goto err;
543
544         vout->field_id ^= 1;
545         if (fid != vout->field_id) {
546                 if (fid == 0)
547                         vout->field_id = fid;
548         } else if (0 == fid) {
549                 if (vout->cur_frm == vout->next_frm)
550                         goto err;
551
552                 vout->cur_frm->ts = timevalue;
553                 vout->cur_frm->state = VIDEOBUF_DONE;
554                 wake_up_interruptible(&vout->cur_frm->done);
555                 vout->cur_frm = vout->next_frm;
556         } else {
557                 if (list_empty(&vout->dma_queue) ||
558                                 (vout->cur_frm != vout->next_frm))
559                         goto err;
560         }
561
562         return vout->field_id;
563 err:
564         return 0;
565 }
566
567 static void omap_vout_isr(void *arg, unsigned int irqstatus)
568 {
569         int ret, fid, mgr_id;
570         u32 addr, irq;
571         struct omap_overlay *ovl;
572         struct timeval timevalue;
573         struct omapvideo_info *ovid;
574         struct omap_dss_device *cur_display;
575         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
576
577         if (!vout->streaming)
578                 return;
579
580         ovid = &vout->vid_info;
581         ovl = ovid->overlays[0];
582         /* get the display device attached to the overlay */
583         if (!ovl->manager || !ovl->manager->device)
584                 return;
585
586         mgr_id = ovl->manager->id;
587         cur_display = ovl->manager->device;
588
589         spin_lock(&vout->vbq_lock);
590         do_gettimeofday(&timevalue);
591
592         switch (cur_display->type) {
593         case OMAP_DISPLAY_TYPE_DSI:
594         case OMAP_DISPLAY_TYPE_DPI:
595                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
596                         irq = DISPC_IRQ_VSYNC;
597                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
598                         irq = DISPC_IRQ_VSYNC2;
599                 else
600                         goto vout_isr_err;
601
602                 if (!(irqstatus & irq))
603                         goto vout_isr_err;
604                 break;
605         case OMAP_DISPLAY_TYPE_VENC:
606                 fid = omapvid_handle_interlace_display(vout, irqstatus,
607                                 timevalue);
608                 if (!fid)
609                         goto vout_isr_err;
610                 break;
611         case OMAP_DISPLAY_TYPE_HDMI:
612                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
613                         goto vout_isr_err;
614                 break;
615         default:
616                 goto vout_isr_err;
617         }
618
619         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
620                 vout->cur_frm->ts = timevalue;
621                 vout->cur_frm->state = VIDEOBUF_DONE;
622                 wake_up_interruptible(&vout->cur_frm->done);
623                 vout->cur_frm = vout->next_frm;
624         }
625
626         vout->first_int = 0;
627         if (list_empty(&vout->dma_queue))
628                 goto vout_isr_err;
629
630         vout->next_frm = list_entry(vout->dma_queue.next,
631                         struct videobuf_buffer, queue);
632         list_del(&vout->next_frm->queue);
633
634         vout->next_frm->state = VIDEOBUF_ACTIVE;
635
636         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
637                 + vout->cropped_offset;
638
639         /* First save the configuration in ovelray structure */
640         ret = omapvid_init(vout, addr);
641         if (ret)
642                 printk(KERN_ERR VOUT_NAME
643                         "failed to set overlay info\n");
644         /* Enable the pipeline and set the Go bit */
645         ret = omapvid_apply_changes(vout);
646         if (ret)
647                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
648
649 vout_isr_err:
650         spin_unlock(&vout->vbq_lock);
651 }
652
653 /* Video buffer call backs */
654
655 /*
656  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
657  * called. This is used to setup buffers and return size and count of
658  * buffers allocated. After the call to this buffer, videobuf layer will
659  * setup buffer queue depending on the size and count of buffers
660  */
661 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
662                           unsigned int *size)
663 {
664         int startindex = 0, i, j;
665         u32 phy_addr = 0, virt_addr = 0;
666         struct omap_vout_device *vout = q->priv_data;
667         struct omapvideo_info *ovid = &vout->vid_info;
668         int vid_max_buf_size;
669
670         if (!vout)
671                 return -EINVAL;
672
673         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
674                 video2_bufsize;
675
676         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
677                 return -EINVAL;
678
679         startindex = (vout->vid == OMAP_VIDEO1) ?
680                 video1_numbuffers : video2_numbuffers;
681         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
682                 *count = startindex;
683
684         if (ovid->rotation_type == VOUT_ROT_VRFB) {
685                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
686                         return -ENOMEM;
687         }
688
689         if (V4L2_MEMORY_MMAP != vout->memory)
690                 return 0;
691
692         /* Now allocated the V4L2 buffers */
693         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
694         startindex = (vout->vid == OMAP_VIDEO1) ?
695                 video1_numbuffers : video2_numbuffers;
696
697         /* Check the size of the buffer */
698         if (*size > vid_max_buf_size) {
699                 v4l2_err(&vout->vid_dev->v4l2_dev,
700                                 "buffer allocation mismatch [%u] [%u]\n",
701                                 *size, vout->buffer_size);
702                 return -ENOMEM;
703         }
704
705         for (i = startindex; i < *count; i++) {
706                 vout->buffer_size = *size;
707
708                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
709                                 &phy_addr);
710                 if (!virt_addr) {
711                         if (ovid->rotation_type == VOUT_ROT_NONE) {
712                                 break;
713                         } else {
714                                 if (!is_rotation_enabled(vout))
715                                         break;
716                         /* Free the VRFB buffers if no space for V4L2 buffers */
717                         for (j = i; j < *count; j++) {
718                                 omap_vout_free_buffer(
719                                                 vout->smsshado_virt_addr[j],
720                                                 vout->smsshado_size);
721                                 vout->smsshado_virt_addr[j] = 0;
722                                 vout->smsshado_phy_addr[j] = 0;
723                                 }
724                         }
725                 }
726                 vout->buf_virt_addr[i] = virt_addr;
727                 vout->buf_phy_addr[i] = phy_addr;
728         }
729         *count = vout->buffer_allocated = i;
730
731         return 0;
732 }
733
734 /*
735  * Free the V4L2 buffers additionally allocated than default
736  * number of buffers
737  */
738 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
739 {
740         int num_buffers = 0, i;
741
742         num_buffers = (vout->vid == OMAP_VIDEO1) ?
743                 video1_numbuffers : video2_numbuffers;
744
745         for (i = num_buffers; i < vout->buffer_allocated; i++) {
746                 if (vout->buf_virt_addr[i])
747                         omap_vout_free_buffer(vout->buf_virt_addr[i],
748                                         vout->buffer_size);
749
750                 vout->buf_virt_addr[i] = 0;
751                 vout->buf_phy_addr[i] = 0;
752         }
753         vout->buffer_allocated = num_buffers;
754 }
755
756 /*
757  * This function will be called when VIDIOC_QBUF ioctl is called.
758  * It prepare buffers before give out for the display. This function
759  * converts user space virtual address into physical address if userptr memory
760  * exchange mechanism is used. If rotation is enabled, it copies entire
761  * buffer into VRFB memory space before giving it to the DSS.
762  */
763 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
764                         struct videobuf_buffer *vb,
765                         enum v4l2_field field)
766 {
767         struct omap_vout_device *vout = q->priv_data;
768         struct omapvideo_info *ovid = &vout->vid_info;
769
770         if (VIDEOBUF_NEEDS_INIT == vb->state) {
771                 vb->width = vout->pix.width;
772                 vb->height = vout->pix.height;
773                 vb->size = vb->width * vb->height * vout->bpp;
774                 vb->field = field;
775         }
776         vb->state = VIDEOBUF_PREPARED;
777         /* if user pointer memory mechanism is used, get the physical
778          * address of the buffer
779          */
780         if (V4L2_MEMORY_USERPTR == vb->memory) {
781                 if (0 == vb->baddr)
782                         return -EINVAL;
783                 /* Physical address */
784                 vout->queued_buf_addr[vb->i] = (u8 *)
785                         omap_vout_uservirt_to_phys(vb->baddr);
786         } else {
787                 u32 addr, dma_addr;
788                 unsigned long size;
789
790                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
791                 size = (unsigned long) vb->size;
792
793                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
794                                 size, DMA_TO_DEVICE);
795                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
796                         v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
797
798                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
799         }
800
801         if (ovid->rotation_type == VOUT_ROT_VRFB)
802                 return omap_vout_prepare_vrfb(vout, vb);
803         else
804                 return 0;
805 }
806
807 /*
808  * Buffer queue function will be called from the videobuf layer when _QBUF
809  * ioctl is called. It is used to enqueue buffer, which is ready to be
810  * displayed.
811  */
812 static void omap_vout_buffer_queue(struct videobuf_queue *q,
813                           struct videobuf_buffer *vb)
814 {
815         struct omap_vout_device *vout = q->priv_data;
816
817         /* Driver is also maintainig a queue. So enqueue buffer in the driver
818          * queue */
819         list_add_tail(&vb->queue, &vout->dma_queue);
820
821         vb->state = VIDEOBUF_QUEUED;
822 }
823
824 /*
825  * Buffer release function is called from videobuf layer to release buffer
826  * which are already allocated
827  */
828 static void omap_vout_buffer_release(struct videobuf_queue *q,
829                             struct videobuf_buffer *vb)
830 {
831         struct omap_vout_device *vout = q->priv_data;
832
833         vb->state = VIDEOBUF_NEEDS_INIT;
834
835         if (V4L2_MEMORY_MMAP != vout->memory)
836                 return;
837 }
838
839 /*
840  *  File operations
841  */
842 static unsigned int omap_vout_poll(struct file *file,
843                                    struct poll_table_struct *wait)
844 {
845         struct omap_vout_device *vout = file->private_data;
846         struct videobuf_queue *q = &vout->vbq;
847
848         return videobuf_poll_stream(file, q, wait);
849 }
850
851 static void omap_vout_vm_open(struct vm_area_struct *vma)
852 {
853         struct omap_vout_device *vout = vma->vm_private_data;
854
855         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
856                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
857         vout->mmap_count++;
858 }
859
860 static void omap_vout_vm_close(struct vm_area_struct *vma)
861 {
862         struct omap_vout_device *vout = vma->vm_private_data;
863
864         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
865                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
866         vout->mmap_count--;
867 }
868
869 static struct vm_operations_struct omap_vout_vm_ops = {
870         .open   = omap_vout_vm_open,
871         .close  = omap_vout_vm_close,
872 };
873
874 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
875 {
876         int i;
877         void *pos;
878         unsigned long start = vma->vm_start;
879         unsigned long size = (vma->vm_end - vma->vm_start);
880         struct omap_vout_device *vout = file->private_data;
881         struct videobuf_queue *q = &vout->vbq;
882
883         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
884                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
885                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
886
887         /* look for the buffer to map */
888         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
889                 if (NULL == q->bufs[i])
890                         continue;
891                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
892                         continue;
893                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
894                         break;
895         }
896
897         if (VIDEO_MAX_FRAME == i) {
898                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
899                                 "offset invalid [offset=0x%lx]\n",
900                                 (vma->vm_pgoff << PAGE_SHIFT));
901                 return -EINVAL;
902         }
903         /* Check the size of the buffer */
904         if (size > vout->buffer_size) {
905                 v4l2_err(&vout->vid_dev->v4l2_dev,
906                                 "insufficient memory [%lu] [%u]\n",
907                                 size, vout->buffer_size);
908                 return -ENOMEM;
909         }
910
911         q->bufs[i]->baddr = vma->vm_start;
912
913         vma->vm_flags |= VM_RESERVED;
914         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
915         vma->vm_ops = &omap_vout_vm_ops;
916         vma->vm_private_data = (void *) vout;
917         pos = (void *)vout->buf_virt_addr[i];
918         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
919         while (size > 0) {
920                 unsigned long pfn;
921                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
922                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
923                         return -EAGAIN;
924                 start += PAGE_SIZE;
925                 pos += PAGE_SIZE;
926                 size -= PAGE_SIZE;
927         }
928         vout->mmap_count++;
929         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
930
931         return 0;
932 }
933
934 static int omap_vout_release(struct file *file)
935 {
936         unsigned int ret, i;
937         struct videobuf_queue *q;
938         struct omapvideo_info *ovid;
939         struct omap_vout_device *vout = file->private_data;
940
941         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
942         ovid = &vout->vid_info;
943
944         if (!vout)
945                 return 0;
946
947         q = &vout->vbq;
948         /* Disable all the overlay managers connected with this interface */
949         for (i = 0; i < ovid->num_overlays; i++) {
950                 struct omap_overlay *ovl = ovid->overlays[i];
951                 if (ovl->manager && ovl->manager->device)
952                         ovl->disable(ovl);
953         }
954         /* Turn off the pipeline */
955         ret = omapvid_apply_changes(vout);
956         if (ret)
957                 v4l2_warn(&vout->vid_dev->v4l2_dev,
958                                 "Unable to apply changes\n");
959
960         /* Free all buffers */
961         omap_vout_free_extra_buffers(vout);
962
963         /* Free the VRFB buffers only if they are allocated
964          * during reqbufs.  Don't free if init time allocated
965          */
966         if (ovid->rotation_type == VOUT_ROT_VRFB) {
967                 if (!vout->vrfb_static_allocation)
968                         omap_vout_free_vrfb_buffers(vout);
969         }
970         videobuf_mmap_free(q);
971
972         /* Even if apply changes fails we should continue
973            freeing allocated memory */
974         if (vout->streaming) {
975                 u32 mask = 0;
976
977                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
978                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
979                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
980                 vout->streaming = 0;
981
982                 videobuf_streamoff(q);
983                 videobuf_queue_cancel(q);
984         }
985
986         if (vout->mmap_count != 0)
987                 vout->mmap_count = 0;
988
989         vout->opened -= 1;
990         file->private_data = NULL;
991
992         if (vout->buffer_allocated)
993                 videobuf_mmap_free(q);
994
995         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
996         return ret;
997 }
998
999 static int omap_vout_open(struct file *file)
1000 {
1001         struct videobuf_queue *q;
1002         struct omap_vout_device *vout = NULL;
1003
1004         vout = video_drvdata(file);
1005         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1006
1007         if (vout == NULL)
1008                 return -ENODEV;
1009
1010         /* for now, we only support single open */
1011         if (vout->opened)
1012                 return -EBUSY;
1013
1014         vout->opened += 1;
1015
1016         file->private_data = vout;
1017         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1018
1019         q = &vout->vbq;
1020         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1021         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1022         video_vbq_ops.buf_release = omap_vout_buffer_release;
1023         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1024         spin_lock_init(&vout->vbq_lock);
1025
1026         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1027                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1028                         sizeof(struct videobuf_buffer), vout, NULL);
1029
1030         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1031         return 0;
1032 }
1033
1034 /*
1035  * V4L2 ioctls
1036  */
1037 static int vidioc_querycap(struct file *file, void *fh,
1038                 struct v4l2_capability *cap)
1039 {
1040         struct omap_vout_device *vout = fh;
1041
1042         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1043         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1044         cap->bus_info[0] = '\0';
1045         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
1046
1047         return 0;
1048 }
1049
1050 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1051                         struct v4l2_fmtdesc *fmt)
1052 {
1053         int index = fmt->index;
1054
1055         if (index >= NUM_OUTPUT_FORMATS)
1056                 return -EINVAL;
1057
1058         fmt->flags = omap_formats[index].flags;
1059         strlcpy(fmt->description, omap_formats[index].description,
1060                         sizeof(fmt->description));
1061         fmt->pixelformat = omap_formats[index].pixelformat;
1062
1063         return 0;
1064 }
1065
1066 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1067                         struct v4l2_format *f)
1068 {
1069         struct omap_vout_device *vout = fh;
1070
1071         f->fmt.pix = vout->pix;
1072         return 0;
1073
1074 }
1075
1076 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1077                         struct v4l2_format *f)
1078 {
1079         struct omap_overlay *ovl;
1080         struct omapvideo_info *ovid;
1081         struct omap_video_timings *timing;
1082         struct omap_vout_device *vout = fh;
1083
1084         ovid = &vout->vid_info;
1085         ovl = ovid->overlays[0];
1086
1087         if (!ovl->manager || !ovl->manager->device)
1088                 return -EINVAL;
1089         /* get the display device attached to the overlay */
1090         timing = &ovl->manager->device->panel.timings;
1091
1092         vout->fbuf.fmt.height = timing->y_res;
1093         vout->fbuf.fmt.width = timing->x_res;
1094
1095         omap_vout_try_format(&f->fmt.pix);
1096         return 0;
1097 }
1098
1099 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1100                         struct v4l2_format *f)
1101 {
1102         int ret, bpp;
1103         struct omap_overlay *ovl;
1104         struct omapvideo_info *ovid;
1105         struct omap_video_timings *timing;
1106         struct omap_vout_device *vout = fh;
1107
1108         if (vout->streaming)
1109                 return -EBUSY;
1110
1111         mutex_lock(&vout->lock);
1112
1113         ovid = &vout->vid_info;
1114         ovl = ovid->overlays[0];
1115
1116         /* get the display device attached to the overlay */
1117         if (!ovl->manager || !ovl->manager->device) {
1118                 ret = -EINVAL;
1119                 goto s_fmt_vid_out_exit;
1120         }
1121         timing = &ovl->manager->device->panel.timings;
1122
1123         /* We dont support RGB24-packed mode if vrfb rotation
1124          * is enabled*/
1125         if ((is_rotation_enabled(vout)) &&
1126                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1127                 ret = -EINVAL;
1128                 goto s_fmt_vid_out_exit;
1129         }
1130
1131         /* get the framebuffer parameters */
1132
1133         if (is_rotation_90_or_270(vout)) {
1134                 vout->fbuf.fmt.height = timing->x_res;
1135                 vout->fbuf.fmt.width = timing->y_res;
1136         } else {
1137                 vout->fbuf.fmt.height = timing->y_res;
1138                 vout->fbuf.fmt.width = timing->x_res;
1139         }
1140
1141         /* change to samller size is OK */
1142
1143         bpp = omap_vout_try_format(&f->fmt.pix);
1144         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1145
1146         /* try & set the new output format */
1147         vout->bpp = bpp;
1148         vout->pix = f->fmt.pix;
1149         vout->vrfb_bpp = 1;
1150
1151         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1152         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1153                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1154                 vout->vrfb_bpp = 2;
1155
1156         /* set default crop and win */
1157         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1158
1159         /* Save the changes in the overlay strcuture */
1160         ret = omapvid_init(vout, 0);
1161         if (ret) {
1162                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1163                 goto s_fmt_vid_out_exit;
1164         }
1165
1166         ret = 0;
1167
1168 s_fmt_vid_out_exit:
1169         mutex_unlock(&vout->lock);
1170         return ret;
1171 }
1172
1173 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1174                         struct v4l2_format *f)
1175 {
1176         int ret = 0;
1177         struct omap_vout_device *vout = fh;
1178         struct omap_overlay *ovl;
1179         struct omapvideo_info *ovid;
1180         struct v4l2_window *win = &f->fmt.win;
1181
1182         ovid = &vout->vid_info;
1183         ovl = ovid->overlays[0];
1184
1185         ret = omap_vout_try_window(&vout->fbuf, win);
1186
1187         if (!ret) {
1188                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1189                         win->global_alpha = 255;
1190                 else
1191                         win->global_alpha = f->fmt.win.global_alpha;
1192         }
1193
1194         return ret;
1195 }
1196
1197 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1198                         struct v4l2_format *f)
1199 {
1200         int ret = 0;
1201         struct omap_overlay *ovl;
1202         struct omapvideo_info *ovid;
1203         struct omap_vout_device *vout = fh;
1204         struct v4l2_window *win = &f->fmt.win;
1205
1206         mutex_lock(&vout->lock);
1207         ovid = &vout->vid_info;
1208         ovl = ovid->overlays[0];
1209
1210         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1211         if (!ret) {
1212                 /* Video1 plane does not support global alpha on OMAP3 */
1213                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1214                         vout->win.global_alpha = 255;
1215                 else
1216                         vout->win.global_alpha = f->fmt.win.global_alpha;
1217
1218                 vout->win.chromakey = f->fmt.win.chromakey;
1219         }
1220         mutex_unlock(&vout->lock);
1221         return ret;
1222 }
1223
1224 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1225                         struct v4l2_fmtdesc *fmt)
1226 {
1227         int index = fmt->index;
1228
1229         if (index >= NUM_OUTPUT_FORMATS)
1230                 return -EINVAL;
1231
1232         fmt->flags = omap_formats[index].flags;
1233         strlcpy(fmt->description, omap_formats[index].description,
1234                         sizeof(fmt->description));
1235         fmt->pixelformat = omap_formats[index].pixelformat;
1236         return 0;
1237 }
1238
1239 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1240                         struct v4l2_format *f)
1241 {
1242         u32 key_value =  0;
1243         struct omap_overlay *ovl;
1244         struct omapvideo_info *ovid;
1245         struct omap_vout_device *vout = fh;
1246         struct omap_overlay_manager_info info;
1247         struct v4l2_window *win = &f->fmt.win;
1248
1249         ovid = &vout->vid_info;
1250         ovl = ovid->overlays[0];
1251
1252         win->w = vout->win.w;
1253         win->field = vout->win.field;
1254         win->global_alpha = vout->win.global_alpha;
1255
1256         if (ovl->manager && ovl->manager->get_manager_info) {
1257                 ovl->manager->get_manager_info(ovl->manager, &info);
1258                 key_value = info.trans_key;
1259         }
1260         win->chromakey = key_value;
1261         return 0;
1262 }
1263
1264 static int vidioc_cropcap(struct file *file, void *fh,
1265                 struct v4l2_cropcap *cropcap)
1266 {
1267         struct omap_vout_device *vout = fh;
1268         struct v4l2_pix_format *pix = &vout->pix;
1269
1270         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1271                 return -EINVAL;
1272
1273         /* Width and height are always even */
1274         cropcap->bounds.width = pix->width & ~1;
1275         cropcap->bounds.height = pix->height & ~1;
1276
1277         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1278         cropcap->pixelaspect.numerator = 1;
1279         cropcap->pixelaspect.denominator = 1;
1280         return 0;
1281 }
1282
1283 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1284 {
1285         struct omap_vout_device *vout = fh;
1286
1287         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1288                 return -EINVAL;
1289         crop->c = vout->crop;
1290         return 0;
1291 }
1292
1293 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1294 {
1295         int ret = -EINVAL;
1296         struct omap_vout_device *vout = fh;
1297         struct omapvideo_info *ovid;
1298         struct omap_overlay *ovl;
1299         struct omap_video_timings *timing;
1300
1301         if (vout->streaming)
1302                 return -EBUSY;
1303
1304         mutex_lock(&vout->lock);
1305         ovid = &vout->vid_info;
1306         ovl = ovid->overlays[0];
1307
1308         if (!ovl->manager || !ovl->manager->device) {
1309                 ret = -EINVAL;
1310                 goto s_crop_err;
1311         }
1312         /* get the display device attached to the overlay */
1313         timing = &ovl->manager->device->panel.timings;
1314
1315         if (is_rotation_90_or_270(vout)) {
1316                 vout->fbuf.fmt.height = timing->x_res;
1317                 vout->fbuf.fmt.width = timing->y_res;
1318         } else {
1319                 vout->fbuf.fmt.height = timing->y_res;
1320                 vout->fbuf.fmt.width = timing->x_res;
1321         }
1322
1323         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1324                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1325                                 &vout->fbuf, &crop->c);
1326
1327 s_crop_err:
1328         mutex_unlock(&vout->lock);
1329         return ret;
1330 }
1331
1332 static int vidioc_queryctrl(struct file *file, void *fh,
1333                 struct v4l2_queryctrl *ctrl)
1334 {
1335         int ret = 0;
1336
1337         switch (ctrl->id) {
1338         case V4L2_CID_ROTATE:
1339                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1340                 break;
1341         case V4L2_CID_BG_COLOR:
1342                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1343                 break;
1344         case V4L2_CID_VFLIP:
1345                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1346                 break;
1347         default:
1348                 ctrl->name[0] = '\0';
1349                 ret = -EINVAL;
1350         }
1351         return ret;
1352 }
1353
1354 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1355 {
1356         int ret = 0;
1357         struct omap_vout_device *vout = fh;
1358
1359         switch (ctrl->id) {
1360         case V4L2_CID_ROTATE:
1361                 ctrl->value = vout->control[0].value;
1362                 break;
1363         case V4L2_CID_BG_COLOR:
1364         {
1365                 struct omap_overlay_manager_info info;
1366                 struct omap_overlay *ovl;
1367
1368                 ovl = vout->vid_info.overlays[0];
1369                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1370                         ret = -EINVAL;
1371                         break;
1372                 }
1373
1374                 ovl->manager->get_manager_info(ovl->manager, &info);
1375                 ctrl->value = info.default_color;
1376                 break;
1377         }
1378         case V4L2_CID_VFLIP:
1379                 ctrl->value = vout->control[2].value;
1380                 break;
1381         default:
1382                 ret = -EINVAL;
1383         }
1384         return ret;
1385 }
1386
1387 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1388 {
1389         int ret = 0;
1390         struct omap_vout_device *vout = fh;
1391
1392         switch (a->id) {
1393         case V4L2_CID_ROTATE:
1394         {
1395                 struct omapvideo_info *ovid;
1396                 int rotation = a->value;
1397
1398                 ovid = &vout->vid_info;
1399
1400                 mutex_lock(&vout->lock);
1401                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1402                         mutex_unlock(&vout->lock);
1403                         ret = -ERANGE;
1404                         break;
1405                 }
1406
1407                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1408                         mutex_unlock(&vout->lock);
1409                         ret = -EINVAL;
1410                         break;
1411                 }
1412
1413                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1414                                                         vout->mirror)) {
1415                         mutex_unlock(&vout->lock);
1416                         ret = -EINVAL;
1417                         break;
1418                 }
1419
1420                 vout->control[0].value = rotation;
1421                 mutex_unlock(&vout->lock);
1422                 break;
1423         }
1424         case V4L2_CID_BG_COLOR:
1425         {
1426                 struct omap_overlay *ovl;
1427                 unsigned int  color = a->value;
1428                 struct omap_overlay_manager_info info;
1429
1430                 ovl = vout->vid_info.overlays[0];
1431
1432                 mutex_lock(&vout->lock);
1433                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1434                         mutex_unlock(&vout->lock);
1435                         ret = -EINVAL;
1436                         break;
1437                 }
1438
1439                 ovl->manager->get_manager_info(ovl->manager, &info);
1440                 info.default_color = color;
1441                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1442                         mutex_unlock(&vout->lock);
1443                         ret = -EINVAL;
1444                         break;
1445                 }
1446
1447                 vout->control[1].value = color;
1448                 mutex_unlock(&vout->lock);
1449                 break;
1450         }
1451         case V4L2_CID_VFLIP:
1452         {
1453                 struct omap_overlay *ovl;
1454                 struct omapvideo_info *ovid;
1455                 unsigned int  mirror = a->value;
1456
1457                 ovid = &vout->vid_info;
1458                 ovl = ovid->overlays[0];
1459
1460                 mutex_lock(&vout->lock);
1461                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1462                         mutex_unlock(&vout->lock);
1463                         ret = -ERANGE;
1464                         break;
1465                 }
1466
1467                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1468                         mutex_unlock(&vout->lock);
1469                         ret = -EINVAL;
1470                         break;
1471                 }
1472                 vout->mirror = mirror;
1473                 vout->control[2].value = mirror;
1474                 mutex_unlock(&vout->lock);
1475                 break;
1476         }
1477         default:
1478                 ret = -EINVAL;
1479         }
1480         return ret;
1481 }
1482
1483 static int vidioc_reqbufs(struct file *file, void *fh,
1484                         struct v4l2_requestbuffers *req)
1485 {
1486         int ret = 0;
1487         unsigned int i, num_buffers = 0;
1488         struct omap_vout_device *vout = fh;
1489         struct videobuf_queue *q = &vout->vbq;
1490
1491         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1492                 return -EINVAL;
1493         /* if memory is not mmp or userptr
1494            return error */
1495         if ((V4L2_MEMORY_MMAP != req->memory) &&
1496                         (V4L2_MEMORY_USERPTR != req->memory))
1497                 return -EINVAL;
1498
1499         mutex_lock(&vout->lock);
1500         /* Cannot be requested when streaming is on */
1501         if (vout->streaming) {
1502                 ret = -EBUSY;
1503                 goto reqbuf_err;
1504         }
1505
1506         /* If buffers are already allocated free them */
1507         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1508                 if (vout->mmap_count) {
1509                         ret = -EBUSY;
1510                         goto reqbuf_err;
1511                 }
1512                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1513                         video1_numbuffers : video2_numbuffers;
1514                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1515                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1516                                         vout->buffer_size);
1517                         vout->buf_virt_addr[i] = 0;
1518                         vout->buf_phy_addr[i] = 0;
1519                 }
1520                 vout->buffer_allocated = num_buffers;
1521                 videobuf_mmap_free(q);
1522         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1523                 if (vout->buffer_allocated) {
1524                         videobuf_mmap_free(q);
1525                         for (i = 0; i < vout->buffer_allocated; i++) {
1526                                 kfree(q->bufs[i]);
1527                                 q->bufs[i] = NULL;
1528                         }
1529                         vout->buffer_allocated = 0;
1530                 }
1531         }
1532
1533         /*store the memory type in data structure */
1534         vout->memory = req->memory;
1535
1536         INIT_LIST_HEAD(&vout->dma_queue);
1537
1538         /* call videobuf_reqbufs api */
1539         ret = videobuf_reqbufs(q, req);
1540         if (ret < 0)
1541                 goto reqbuf_err;
1542
1543         vout->buffer_allocated = req->count;
1544
1545 reqbuf_err:
1546         mutex_unlock(&vout->lock);
1547         return ret;
1548 }
1549
1550 static int vidioc_querybuf(struct file *file, void *fh,
1551                         struct v4l2_buffer *b)
1552 {
1553         struct omap_vout_device *vout = fh;
1554
1555         return videobuf_querybuf(&vout->vbq, b);
1556 }
1557
1558 static int vidioc_qbuf(struct file *file, void *fh,
1559                         struct v4l2_buffer *buffer)
1560 {
1561         struct omap_vout_device *vout = fh;
1562         struct videobuf_queue *q = &vout->vbq;
1563
1564         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1565                         (buffer->index >= vout->buffer_allocated) ||
1566                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1567                 return -EINVAL;
1568         }
1569         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1570                 if ((buffer->length < vout->pix.sizeimage) ||
1571                                 (0 == buffer->m.userptr)) {
1572                         return -EINVAL;
1573                 }
1574         }
1575
1576         if ((is_rotation_enabled(vout)) &&
1577                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1578                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1579                                 "DMA Channel not allocated for Rotation\n");
1580                 return -EINVAL;
1581         }
1582
1583         return videobuf_qbuf(q, buffer);
1584 }
1585
1586 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1587 {
1588         struct omap_vout_device *vout = fh;
1589         struct videobuf_queue *q = &vout->vbq;
1590
1591         int ret;
1592         u32 addr;
1593         unsigned long size;
1594         struct videobuf_buffer *vb;
1595
1596         vb = q->bufs[b->index];
1597
1598         if (!vout->streaming)
1599                 return -EINVAL;
1600
1601         if (file->f_flags & O_NONBLOCK)
1602                 /* Call videobuf_dqbuf for non blocking mode */
1603                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1604         else
1605                 /* Call videobuf_dqbuf for  blocking mode */
1606                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1607
1608         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1609         size = (unsigned long) vb->size;
1610         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1611                                 size, DMA_TO_DEVICE);
1612         return ret;
1613 }
1614
1615 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1616 {
1617         int ret = 0, j;
1618         u32 addr = 0, mask = 0;
1619         struct omap_vout_device *vout = fh;
1620         struct videobuf_queue *q = &vout->vbq;
1621         struct omapvideo_info *ovid = &vout->vid_info;
1622
1623         mutex_lock(&vout->lock);
1624
1625         if (vout->streaming) {
1626                 ret = -EBUSY;
1627                 goto streamon_err;
1628         }
1629
1630         ret = videobuf_streamon(q);
1631         if (ret)
1632                 goto streamon_err;
1633
1634         if (list_empty(&vout->dma_queue)) {
1635                 ret = -EIO;
1636                 goto streamon_err1;
1637         }
1638
1639         /* Get the next frame from the buffer queue */
1640         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1641                         struct videobuf_buffer, queue);
1642         /* Remove buffer from the buffer queue */
1643         list_del(&vout->cur_frm->queue);
1644         /* Mark state of the current frame to active */
1645         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1646         /* Initialize field_id and started member */
1647         vout->field_id = 0;
1648
1649         /* set flag here. Next QBUF will start DMA */
1650         vout->streaming = 1;
1651
1652         vout->first_int = 1;
1653
1654         if (omap_vout_calculate_offset(vout)) {
1655                 ret = -EINVAL;
1656                 goto streamon_err1;
1657         }
1658         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1659                 + vout->cropped_offset;
1660
1661         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1662                 | DISPC_IRQ_VSYNC2;
1663
1664         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1665
1666         for (j = 0; j < ovid->num_overlays; j++) {
1667                 struct omap_overlay *ovl = ovid->overlays[j];
1668
1669                 if (ovl->manager && ovl->manager->device) {
1670                         struct omap_overlay_info info;
1671                         ovl->get_overlay_info(ovl, &info);
1672                         info.paddr = addr;
1673                         if (ovl->set_overlay_info(ovl, &info)) {
1674                                 ret = -EINVAL;
1675                                 goto streamon_err1;
1676                         }
1677                 }
1678         }
1679
1680         /* First save the configuration in ovelray structure */
1681         ret = omapvid_init(vout, addr);
1682         if (ret)
1683                 v4l2_err(&vout->vid_dev->v4l2_dev,
1684                                 "failed to set overlay info\n");
1685         /* Enable the pipeline and set the Go bit */
1686         ret = omapvid_apply_changes(vout);
1687         if (ret)
1688                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1689
1690         for (j = 0; j < ovid->num_overlays; j++) {
1691                 struct omap_overlay *ovl = ovid->overlays[j];
1692
1693                 if (ovl->manager && ovl->manager->device) {
1694                         ret = ovl->enable(ovl);
1695                         if (ret)
1696                                 goto streamon_err1;
1697                 }
1698         }
1699
1700         ret = 0;
1701
1702 streamon_err1:
1703         if (ret)
1704                 ret = videobuf_streamoff(q);
1705 streamon_err:
1706         mutex_unlock(&vout->lock);
1707         return ret;
1708 }
1709
1710 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1711 {
1712         u32 mask = 0;
1713         int ret = 0, j;
1714         struct omap_vout_device *vout = fh;
1715         struct omapvideo_info *ovid = &vout->vid_info;
1716
1717         if (!vout->streaming)
1718                 return -EINVAL;
1719
1720         vout->streaming = 0;
1721         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1722                 | DISPC_IRQ_VSYNC2;
1723
1724         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1725
1726         for (j = 0; j < ovid->num_overlays; j++) {
1727                 struct omap_overlay *ovl = ovid->overlays[j];
1728
1729                 if (ovl->manager && ovl->manager->device)
1730                         ovl->disable(ovl);
1731         }
1732
1733         /* Turn of the pipeline */
1734         ret = omapvid_apply_changes(vout);
1735         if (ret)
1736                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1737                                 " streamoff\n");
1738
1739         INIT_LIST_HEAD(&vout->dma_queue);
1740         ret = videobuf_streamoff(&vout->vbq);
1741
1742         return ret;
1743 }
1744
1745 static int vidioc_s_fbuf(struct file *file, void *fh,
1746                                 struct v4l2_framebuffer *a)
1747 {
1748         int enable = 0;
1749         struct omap_overlay *ovl;
1750         struct omapvideo_info *ovid;
1751         struct omap_vout_device *vout = fh;
1752         struct omap_overlay_manager_info info;
1753         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1754
1755         ovid = &vout->vid_info;
1756         ovl = ovid->overlays[0];
1757
1758         /* OMAP DSS doesn't support Source and Destination color
1759            key together */
1760         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1761                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1762                 return -EINVAL;
1763         /* OMAP DSS Doesn't support the Destination color key
1764            and alpha blending together */
1765         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1766                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1767                 return -EINVAL;
1768
1769         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1770                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1771                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1772         } else
1773                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1774
1775         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1776                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1777                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1778         } else
1779                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1780
1781         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1782                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1783                 enable = 1;
1784         else
1785                 enable = 0;
1786         if (ovl->manager && ovl->manager->get_manager_info &&
1787                         ovl->manager->set_manager_info) {
1788
1789                 ovl->manager->get_manager_info(ovl->manager, &info);
1790                 info.trans_enabled = enable;
1791                 info.trans_key_type = key_type;
1792                 info.trans_key = vout->win.chromakey;
1793
1794                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1795                         return -EINVAL;
1796         }
1797         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1798                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1799                 enable = 1;
1800         } else {
1801                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1802                 enable = 0;
1803         }
1804         if (ovl->manager && ovl->manager->get_manager_info &&
1805                         ovl->manager->set_manager_info) {
1806                 ovl->manager->get_manager_info(ovl->manager, &info);
1807                 /* enable this only if there is no zorder cap */
1808                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1809                         info.partial_alpha_enabled = enable;
1810                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1811                         return -EINVAL;
1812         }
1813
1814         return 0;
1815 }
1816
1817 static int vidioc_g_fbuf(struct file *file, void *fh,
1818                 struct v4l2_framebuffer *a)
1819 {
1820         struct omap_overlay *ovl;
1821         struct omapvideo_info *ovid;
1822         struct omap_vout_device *vout = fh;
1823         struct omap_overlay_manager_info info;
1824
1825         ovid = &vout->vid_info;
1826         ovl = ovid->overlays[0];
1827
1828         a->flags = 0x0;
1829         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1830                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1831
1832         if (ovl->manager && ovl->manager->get_manager_info) {
1833                 ovl->manager->get_manager_info(ovl->manager, &info);
1834                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1835                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1836                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1837                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1838         }
1839         if (ovl->manager && ovl->manager->get_manager_info) {
1840                 ovl->manager->get_manager_info(ovl->manager, &info);
1841                 if (info.partial_alpha_enabled)
1842                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1843         }
1844
1845         return 0;
1846 }
1847
1848 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1849         .vidioc_querycap                        = vidioc_querycap,
1850         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1851         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1852         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1853         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1854         .vidioc_queryctrl                       = vidioc_queryctrl,
1855         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1856         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1857         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1858         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1859         .vidioc_try_fmt_vid_overlay             = vidioc_try_fmt_vid_overlay,
1860         .vidioc_s_fmt_vid_overlay               = vidioc_s_fmt_vid_overlay,
1861         .vidioc_enum_fmt_vid_overlay            = vidioc_enum_fmt_vid_overlay,
1862         .vidioc_g_fmt_vid_overlay               = vidioc_g_fmt_vid_overlay,
1863         .vidioc_cropcap                         = vidioc_cropcap,
1864         .vidioc_g_crop                          = vidioc_g_crop,
1865         .vidioc_s_crop                          = vidioc_s_crop,
1866         .vidioc_reqbufs                         = vidioc_reqbufs,
1867         .vidioc_querybuf                        = vidioc_querybuf,
1868         .vidioc_qbuf                            = vidioc_qbuf,
1869         .vidioc_dqbuf                           = vidioc_dqbuf,
1870         .vidioc_streamon                        = vidioc_streamon,
1871         .vidioc_streamoff                       = vidioc_streamoff,
1872 };
1873
1874 static const struct v4l2_file_operations omap_vout_fops = {
1875         .owner          = THIS_MODULE,
1876         .poll           = omap_vout_poll,
1877         .unlocked_ioctl = video_ioctl2,
1878         .mmap           = omap_vout_mmap,
1879         .open           = omap_vout_open,
1880         .release        = omap_vout_release,
1881 };
1882
1883 /* Init functions used during driver initialization */
1884 /* Initial setup of video_data */
1885 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1886 {
1887         struct video_device *vfd;
1888         struct v4l2_pix_format *pix;
1889         struct v4l2_control *control;
1890         struct omap_dss_device *display =
1891                 vout->vid_info.overlays[0]->manager->device;
1892
1893         /* set the default pix */
1894         pix = &vout->pix;
1895
1896         /* Set the default picture of QVGA  */
1897         pix->width = QQVGA_WIDTH;
1898         pix->height = QQVGA_HEIGHT;
1899
1900         /* Default pixel format is RGB 5-6-5 */
1901         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1902         pix->field = V4L2_FIELD_ANY;
1903         pix->bytesperline = pix->width * 2;
1904         pix->sizeimage = pix->bytesperline * pix->height;
1905         pix->priv = 0;
1906         pix->colorspace = V4L2_COLORSPACE_JPEG;
1907
1908         vout->bpp = RGB565_BPP;
1909         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1910         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1911
1912         /* Set the data structures for the overlay parameters*/
1913         vout->win.global_alpha = 255;
1914         vout->fbuf.flags = 0;
1915         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1916                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1917         vout->win.chromakey = 0;
1918
1919         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1920
1921         /*Initialize the control variables for
1922           rotation, flipping and background color. */
1923         control = vout->control;
1924         control[0].id = V4L2_CID_ROTATE;
1925         control[0].value = 0;
1926         vout->rotation = 0;
1927         vout->mirror = 0;
1928         vout->control[2].id = V4L2_CID_HFLIP;
1929         vout->control[2].value = 0;
1930         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1931                 vout->vrfb_bpp = 2;
1932
1933         control[1].id = V4L2_CID_BG_COLOR;
1934         control[1].value = 0;
1935
1936         /* initialize the video_device struct */
1937         vfd = vout->vfd = video_device_alloc();
1938
1939         if (!vfd) {
1940                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1941                                 " video device struct\n");
1942                 return -ENOMEM;
1943         }
1944         vfd->release = video_device_release;
1945         vfd->ioctl_ops = &vout_ioctl_ops;
1946
1947         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1948
1949         vfd->fops = &omap_vout_fops;
1950         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1951         mutex_init(&vout->lock);
1952
1953         vfd->minor = -1;
1954         return 0;
1955
1956 }
1957
1958 /* Setup video buffers */
1959 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1960                 int vid_num)
1961 {
1962         u32 numbuffers;
1963         int ret = 0, i;
1964         struct omapvideo_info *ovid;
1965         struct omap_vout_device *vout;
1966         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1967         struct omap2video_device *vid_dev =
1968                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1969
1970         vout = vid_dev->vouts[vid_num];
1971         ovid = &vout->vid_info;
1972
1973         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1974         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1975         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1976
1977         for (i = 0; i < numbuffers; i++) {
1978                 vout->buf_virt_addr[i] =
1979                         omap_vout_alloc_buffer(vout->buffer_size,
1980                                         (u32 *) &vout->buf_phy_addr[i]);
1981                 if (!vout->buf_virt_addr[i]) {
1982                         numbuffers = i;
1983                         ret = -ENOMEM;
1984                         goto free_buffers;
1985                 }
1986         }
1987
1988         vout->cropped_offset = 0;
1989
1990         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1991                 int static_vrfb_allocation = (vid_num == 0) ?
1992                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1993                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1994                                 static_vrfb_allocation);
1995         }
1996
1997         return ret;
1998
1999 free_buffers:
2000         for (i = 0; i < numbuffers; i++) {
2001                 omap_vout_free_buffer(vout->buf_virt_addr[i],
2002                                                 vout->buffer_size);
2003                 vout->buf_virt_addr[i] = 0;
2004                 vout->buf_phy_addr[i] = 0;
2005         }
2006         return ret;
2007
2008 }
2009
2010 /* Create video out devices */
2011 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2012 {
2013         int ret = 0, k;
2014         struct omap_vout_device *vout;
2015         struct video_device *vfd = NULL;
2016         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2017         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2018                         struct omap2video_device, v4l2_dev);
2019
2020         for (k = 0; k < pdev->num_resources; k++) {
2021
2022                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2023                 if (!vout) {
2024                         dev_err(&pdev->dev, ": could not allocate memory\n");
2025                         return -ENOMEM;
2026                 }
2027
2028                 vout->vid = k;
2029                 vid_dev->vouts[k] = vout;
2030                 vout->vid_dev = vid_dev;
2031                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2032                 if (pdev->num_resources == 1)
2033                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2034                 else
2035                         /* Else select video1 and video2 one by one. */
2036                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2037                 vout->vid_info.num_overlays = 1;
2038                 vout->vid_info.id = k + 1;
2039
2040                 /* Set VRFB as rotation_type for omap2 and omap3 */
2041                 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2042                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2043
2044                 /* Setup the default configuration for the video devices
2045                  */
2046                 if (omap_vout_setup_video_data(vout) != 0) {
2047                         ret = -ENOMEM;
2048                         goto error;
2049                 }
2050
2051                 /* Allocate default number of buffers for the video streaming
2052                  * and reserve the VRFB space for rotation
2053                  */
2054                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2055                         ret = -ENOMEM;
2056                         goto error1;
2057                 }
2058
2059                 /* Register the Video device with V4L2
2060                  */
2061                 vfd = vout->vfd;
2062                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2063                         dev_err(&pdev->dev, ": Could not register "
2064                                         "Video for Linux device\n");
2065                         vfd->minor = -1;
2066                         ret = -ENODEV;
2067                         goto error2;
2068                 }
2069                 video_set_drvdata(vfd, vout);
2070
2071                 /* Configure the overlay structure */
2072                 ret = omapvid_init(vid_dev->vouts[k], 0);
2073                 if (!ret)
2074                         goto success;
2075
2076 error2:
2077                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2078                         omap_vout_release_vrfb(vout);
2079                 omap_vout_free_buffers(vout);
2080 error1:
2081                 video_device_release(vfd);
2082 error:
2083                 kfree(vout);
2084                 return ret;
2085
2086 success:
2087                 dev_info(&pdev->dev, ": registered and initialized"
2088                                 " video device %d\n", vfd->minor);
2089                 if (k == (pdev->num_resources - 1))
2090                         return 0;
2091         }
2092
2093         return -ENODEV;
2094 }
2095 /* Driver functions */
2096 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2097 {
2098         struct video_device *vfd;
2099         struct omapvideo_info *ovid;
2100
2101         if (!vout)
2102                 return;
2103
2104         vfd = vout->vfd;
2105         ovid = &vout->vid_info;
2106         if (vfd) {
2107                 if (!video_is_registered(vfd)) {
2108                         /*
2109                          * The device was never registered, so release the
2110                          * video_device struct directly.
2111                          */
2112                         video_device_release(vfd);
2113                 } else {
2114                         /*
2115                          * The unregister function will release the video_device
2116                          * struct as well as unregistering it.
2117                          */
2118                         video_unregister_device(vfd);
2119                 }
2120         }
2121         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2122                 omap_vout_release_vrfb(vout);
2123                 /* Free the VRFB buffer if allocated
2124                  * init time
2125                  */
2126                 if (vout->vrfb_static_allocation)
2127                         omap_vout_free_vrfb_buffers(vout);
2128         }
2129         omap_vout_free_buffers(vout);
2130
2131         kfree(vout);
2132 }
2133
2134 static int omap_vout_remove(struct platform_device *pdev)
2135 {
2136         int k;
2137         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2138         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2139                         omap2video_device, v4l2_dev);
2140
2141         v4l2_device_unregister(v4l2_dev);
2142         for (k = 0; k < pdev->num_resources; k++)
2143                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2144
2145         for (k = 0; k < vid_dev->num_displays; k++) {
2146                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2147                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2148
2149                 omap_dss_put_device(vid_dev->displays[k]);
2150         }
2151         kfree(vid_dev);
2152         return 0;
2153 }
2154
2155 static int __init omap_vout_probe(struct platform_device *pdev)
2156 {
2157         int ret = 0, i;
2158         struct omap_overlay *ovl;
2159         struct omap_dss_device *dssdev = NULL;
2160         struct omap_dss_device *def_display;
2161         struct omap2video_device *vid_dev = NULL;
2162
2163         if (pdev->num_resources == 0) {
2164                 dev_err(&pdev->dev, "probed for an unknown device\n");
2165                 return -ENODEV;
2166         }
2167
2168         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2169         if (vid_dev == NULL)
2170                 return -ENOMEM;
2171
2172         vid_dev->num_displays = 0;
2173         for_each_dss_dev(dssdev) {
2174                 omap_dss_get_device(dssdev);
2175
2176                 if (!dssdev->driver) {
2177                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2178                                         dssdev->name);
2179                         omap_dss_put_device(dssdev);
2180                         continue;
2181                 }
2182
2183                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2184         }
2185
2186         if (vid_dev->num_displays == 0) {
2187                 dev_err(&pdev->dev, "no displays\n");
2188                 ret = -EINVAL;
2189                 goto probe_err0;
2190         }
2191
2192         vid_dev->num_overlays = omap_dss_get_num_overlays();
2193         for (i = 0; i < vid_dev->num_overlays; i++)
2194                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2195
2196         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2197         for (i = 0; i < vid_dev->num_managers; i++)
2198                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2199
2200         /* Get the Video1 overlay and video2 overlay.
2201          * Setup the Display attached to that overlays
2202          */
2203         for (i = 1; i < vid_dev->num_overlays; i++) {
2204                 ovl = omap_dss_get_overlay(i);
2205                 if (ovl->manager && ovl->manager->device) {
2206                         def_display = ovl->manager->device;
2207                 } else {
2208                         dev_warn(&pdev->dev, "cannot find display\n");
2209                         def_display = NULL;
2210                 }
2211                 if (def_display) {
2212                         struct omap_dss_driver *dssdrv = def_display->driver;
2213
2214                         ret = dssdrv->enable(def_display);
2215                         if (ret) {
2216                                 /* Here we are not considering a error
2217                                  *  as display may be enabled by frame
2218                                  *  buffer driver
2219                                  */
2220                                 dev_warn(&pdev->dev,
2221                                         "'%s' Display already enabled\n",
2222                                         def_display->name);
2223                         }
2224                 }
2225         }
2226
2227         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2228                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2229                 ret = -ENODEV;
2230                 goto probe_err1;
2231         }
2232
2233         ret = omap_vout_create_video_devices(pdev);
2234         if (ret)
2235                 goto probe_err2;
2236
2237         for (i = 0; i < vid_dev->num_displays; i++) {
2238                 struct omap_dss_device *display = vid_dev->displays[i];
2239
2240                 if (display->driver->update)
2241                         display->driver->update(display, 0, 0,
2242                                         display->panel.timings.x_res,
2243                                         display->panel.timings.y_res);
2244         }
2245         return 0;
2246
2247 probe_err2:
2248         v4l2_device_unregister(&vid_dev->v4l2_dev);
2249 probe_err1:
2250         for (i = 1; i < vid_dev->num_overlays; i++) {
2251                 def_display = NULL;
2252                 ovl = omap_dss_get_overlay(i);
2253                 if (ovl->manager && ovl->manager->device)
2254                         def_display = ovl->manager->device;
2255
2256                 if (def_display && def_display->driver)
2257                         def_display->driver->disable(def_display);
2258         }
2259 probe_err0:
2260         kfree(vid_dev);
2261         return ret;
2262 }
2263
2264 static struct platform_driver omap_vout_driver = {
2265         .driver = {
2266                 .name = VOUT_NAME,
2267         },
2268         .probe = omap_vout_probe,
2269         .remove = omap_vout_remove,
2270 };
2271
2272 static int __init omap_vout_init(void)
2273 {
2274         if (platform_driver_register(&omap_vout_driver) != 0) {
2275                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2276                 return -EINVAL;
2277         }
2278         return 0;
2279 }
2280
2281 static void omap_vout_cleanup(void)
2282 {
2283         platform_driver_unregister(&omap_vout_driver);
2284 }
2285
2286 late_initcall(omap_vout_init);
2287 module_exit(omap_vout_cleanup);