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/v4l2-device.h>
44 #include <media/v4l2-ioctl.h>
45 #include <media/v4l2-event.h>
46 
47 #include <video/omapvrfb.h>
48 #include <video/omapfb_dss.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 /* Variables configurable through module params*/
67 static bool vid1_static_vrfb_alloc;
68 static bool vid2_static_vrfb_alloc;
69 static bool debug;
70 
71 /* Module parameters */
72 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
73 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
74 	"Static allocation of the VRFB buffer for video1 device");
75 
76 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
77 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
78 	"Static allocation of the VRFB buffer for video2 device");
79 
80 module_param(debug, bool, S_IRUGO);
81 MODULE_PARM_DESC(debug, "Debug level (0-1)");
82 
83 /* list of image formats supported by OMAP2 video pipelines */
84 static const struct v4l2_fmtdesc omap_formats[] = {
85 	{
86 		/* Note:  V4L2 defines RGB565 as:
87 		 *
88 		 *      Byte 0                    Byte 1
89 		 *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
90 		 *
91 		 * We interpret RGB565 as:
92 		 *
93 		 *      Byte 0                    Byte 1
94 		 *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
95 		 */
96 		.pixelformat = V4L2_PIX_FMT_RGB565,
97 	},
98 	{
99 		/* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
100 		 *  this for RGB24 unpack mode, the last 8 bits are ignored
101 		 * */
102 		.pixelformat = V4L2_PIX_FMT_RGB32,
103 	},
104 	{
105 		/* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
106 		 *        this for RGB24 packed mode
107 		 *
108 		 */
109 		.pixelformat = V4L2_PIX_FMT_RGB24,
110 	},
111 	{
112 		.pixelformat = V4L2_PIX_FMT_YUYV,
113 	},
114 	{
115 		.pixelformat = V4L2_PIX_FMT_UYVY,
116 	},
117 };
118 
119 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
120 
121 /*
122  * Try format
123  */
124 static int omap_vout_try_format(struct v4l2_pix_format *pix)
125 {
126 	int ifmt, bpp = 0;
127 
128 	pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
129 						(u32)VID_MAX_HEIGHT);
130 	pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
131 
132 	for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
133 		if (pix->pixelformat == omap_formats[ifmt].pixelformat)
134 			break;
135 	}
136 
137 	if (ifmt == NUM_OUTPUT_FORMATS)
138 		ifmt = 0;
139 
140 	pix->pixelformat = omap_formats[ifmt].pixelformat;
141 	pix->field = V4L2_FIELD_NONE;
142 
143 	switch (pix->pixelformat) {
144 	case V4L2_PIX_FMT_YUYV:
145 	case V4L2_PIX_FMT_UYVY:
146 	default:
147 		pix->colorspace = V4L2_COLORSPACE_SRGB;
148 		bpp = YUYV_BPP;
149 		break;
150 	case V4L2_PIX_FMT_RGB565:
151 	case V4L2_PIX_FMT_RGB565X:
152 		pix->colorspace = V4L2_COLORSPACE_SRGB;
153 		bpp = RGB565_BPP;
154 		break;
155 	case V4L2_PIX_FMT_RGB24:
156 		pix->colorspace = V4L2_COLORSPACE_SRGB;
157 		bpp = RGB24_BPP;
158 		break;
159 	case V4L2_PIX_FMT_RGB32:
160 	case V4L2_PIX_FMT_BGR32:
161 		pix->colorspace = V4L2_COLORSPACE_SRGB;
162 		bpp = RGB32_BPP;
163 		break;
164 	}
165 	pix->bytesperline = pix->width * bpp;
166 	pix->sizeimage = pix->bytesperline * pix->height;
167 
168 	return bpp;
169 }
170 
171 /*
172  * Convert V4L2 rotation to DSS rotation
173  *	V4L2 understand 0, 90, 180, 270.
174  *	Convert to 0, 1, 2 and 3 respectively for DSS
175  */
176 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
177 			enum dss_rotation *rotation, bool mirror)
178 {
179 	int ret = 0;
180 
181 	switch (v4l2_rotation) {
182 	case 90:
183 		*rotation = dss_rotation_90_degree;
184 		break;
185 	case 180:
186 		*rotation = dss_rotation_180_degree;
187 		break;
188 	case 270:
189 		*rotation = dss_rotation_270_degree;
190 		break;
191 	case 0:
192 		*rotation = dss_rotation_0_degree;
193 		break;
194 	default:
195 		ret = -EINVAL;
196 	}
197 	return ret;
198 }
199 
200 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
201 {
202 	struct omapvideo_info *ovid;
203 	struct v4l2_rect *crop = &vout->crop;
204 	struct v4l2_pix_format *pix = &vout->pix;
205 	int *cropped_offset = &vout->cropped_offset;
206 	int ps = 2, line_length = 0;
207 
208 	ovid = &vout->vid_info;
209 
210 	if (ovid->rotation_type == VOUT_ROT_VRFB) {
211 		omap_vout_calculate_vrfb_offset(vout);
212 	} else {
213 		vout->line_length = line_length = pix->width;
214 
215 		if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
216 			V4L2_PIX_FMT_UYVY == pix->pixelformat)
217 			ps = 2;
218 		else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
219 			ps = 4;
220 		else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
221 			ps = 3;
222 
223 		vout->ps = ps;
224 
225 		*cropped_offset = (line_length * ps) *
226 			crop->top + crop->left * ps;
227 	}
228 
229 	v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
230 			__func__, vout->cropped_offset);
231 
232 	return 0;
233 }
234 
235 /*
236  * Convert V4L2 pixel format to DSS pixel format
237  */
238 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
239 {
240 	struct omap_overlay *ovl;
241 	struct omapvideo_info *ovid;
242 	struct v4l2_pix_format *pix = &vout->pix;
243 	enum omap_color_mode mode;
244 
245 	ovid = &vout->vid_info;
246 	ovl = ovid->overlays[0];
247 
248 	switch (pix->pixelformat) {
249 	case V4L2_PIX_FMT_YUYV:
250 		mode = OMAP_DSS_COLOR_YUV2;
251 		break;
252 	case V4L2_PIX_FMT_UYVY:
253 		mode = OMAP_DSS_COLOR_UYVY;
254 		break;
255 	case V4L2_PIX_FMT_RGB565:
256 		mode = OMAP_DSS_COLOR_RGB16;
257 		break;
258 	case V4L2_PIX_FMT_RGB24:
259 		mode = OMAP_DSS_COLOR_RGB24P;
260 		break;
261 	case V4L2_PIX_FMT_RGB32:
262 		mode = (ovl->id == OMAP_DSS_VIDEO1) ?
263 			OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
264 		break;
265 	case V4L2_PIX_FMT_BGR32:
266 		mode = OMAP_DSS_COLOR_RGBX32;
267 		break;
268 	default:
269 		mode = -EINVAL;
270 		break;
271 	}
272 	return mode;
273 }
274 
275 /*
276  * Setup the overlay
277  */
278 static int omapvid_setup_overlay(struct omap_vout_device *vout,
279 		struct omap_overlay *ovl, int posx, int posy, int outw,
280 		int outh, dma_addr_t addr)
281 {
282 	int ret = 0;
283 	struct omap_overlay_info info;
284 	int cropheight, cropwidth, pixwidth;
285 
286 	if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
287 			(outw != vout->pix.width || outh != vout->pix.height)) {
288 		ret = -EINVAL;
289 		goto setup_ovl_err;
290 	}
291 
292 	vout->dss_mode = video_mode_to_dss_mode(vout);
293 	if (vout->dss_mode == -EINVAL) {
294 		ret = -EINVAL;
295 		goto setup_ovl_err;
296 	}
297 
298 	/* Setup the input plane parameters according to
299 	 * rotation value selected.
300 	 */
301 	if (is_rotation_90_or_270(vout)) {
302 		cropheight = vout->crop.width;
303 		cropwidth = vout->crop.height;
304 		pixwidth = vout->pix.height;
305 	} else {
306 		cropheight = vout->crop.height;
307 		cropwidth = vout->crop.width;
308 		pixwidth = vout->pix.width;
309 	}
310 
311 	ovl->get_overlay_info(ovl, &info);
312 	info.paddr = addr;
313 	info.width = cropwidth;
314 	info.height = cropheight;
315 	info.color_mode = vout->dss_mode;
316 	info.mirror = vout->mirror;
317 	info.pos_x = posx;
318 	info.pos_y = posy;
319 	info.out_width = outw;
320 	info.out_height = outh;
321 	info.global_alpha = vout->win.global_alpha;
322 	if (!is_rotation_enabled(vout)) {
323 		info.rotation = 0;
324 		info.rotation_type = OMAP_DSS_ROT_DMA;
325 		info.screen_width = pixwidth;
326 	} else {
327 		info.rotation = vout->rotation;
328 		info.rotation_type = OMAP_DSS_ROT_VRFB;
329 		info.screen_width = 2048;
330 	}
331 
332 	v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
333 		"%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
334 		"rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
335 		"out_height=%d rotation_type=%d screen_width=%d\n", __func__,
336 		ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
337 		info.color_mode, info.rotation, info.mirror, info.pos_x,
338 		info.pos_y, info.out_width, info.out_height, info.rotation_type,
339 		info.screen_width);
340 
341 	ret = ovl->set_overlay_info(ovl, &info);
342 	if (ret)
343 		goto setup_ovl_err;
344 
345 	return 0;
346 
347 setup_ovl_err:
348 	v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
349 	return ret;
350 }
351 
352 /*
353  * Initialize the overlay structure
354  */
355 static int omapvid_init(struct omap_vout_device *vout, dma_addr_t addr)
356 {
357 	int ret = 0, i;
358 	struct v4l2_window *win;
359 	struct omap_overlay *ovl;
360 	int posx, posy, outw, outh;
361 	struct omap_video_timings *timing;
362 	struct omapvideo_info *ovid = &vout->vid_info;
363 
364 	win = &vout->win;
365 	for (i = 0; i < ovid->num_overlays; i++) {
366 		struct omap_dss_device *dssdev;
367 
368 		ovl = ovid->overlays[i];
369 		dssdev = ovl->get_device(ovl);
370 
371 		if (!dssdev)
372 			return -EINVAL;
373 
374 		timing = &dssdev->panel.timings;
375 
376 		outw = win->w.width;
377 		outh = win->w.height;
378 		switch (vout->rotation) {
379 		case dss_rotation_90_degree:
380 			/* Invert the height and width for 90
381 			 * and 270 degree rotation
382 			 */
383 			swap(outw, outh);
384 			posy = (timing->y_res - win->w.width) - win->w.left;
385 			posx = win->w.top;
386 			break;
387 
388 		case dss_rotation_180_degree:
389 			posx = (timing->x_res - win->w.width) - win->w.left;
390 			posy = (timing->y_res - win->w.height) - win->w.top;
391 			break;
392 
393 		case dss_rotation_270_degree:
394 			swap(outw, outh);
395 			posy = win->w.left;
396 			posx = (timing->x_res - win->w.height) - win->w.top;
397 			break;
398 
399 		default:
400 			posx = win->w.left;
401 			posy = win->w.top;
402 			break;
403 		}
404 
405 		ret = omapvid_setup_overlay(vout, ovl, posx, posy,
406 				outw, outh, addr);
407 		if (ret)
408 			goto omapvid_init_err;
409 	}
410 	return 0;
411 
412 omapvid_init_err:
413 	v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
414 	return ret;
415 }
416 
417 /*
418  * Apply the changes set the go bit of DSS
419  */
420 static int omapvid_apply_changes(struct omap_vout_device *vout)
421 {
422 	int i;
423 	struct omap_overlay *ovl;
424 	struct omapvideo_info *ovid = &vout->vid_info;
425 
426 	for (i = 0; i < ovid->num_overlays; i++) {
427 		struct omap_dss_device *dssdev;
428 
429 		ovl = ovid->overlays[i];
430 		dssdev = ovl->get_device(ovl);
431 		if (!dssdev)
432 			return -EINVAL;
433 		ovl->manager->apply(ovl->manager);
434 	}
435 
436 	return 0;
437 }
438 
439 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
440 		unsigned int irqstatus, u64 ts)
441 {
442 	u32 fid;
443 
444 	if (vout->first_int) {
445 		vout->first_int = 0;
446 		goto err;
447 	}
448 
449 	if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
450 		fid = 1;
451 	else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
452 		fid = 0;
453 	else
454 		goto err;
455 
456 	vout->field_id ^= 1;
457 	if (fid != vout->field_id) {
458 		if (fid == 0)
459 			vout->field_id = fid;
460 	} else if (0 == fid) {
461 		if (vout->cur_frm == vout->next_frm)
462 			goto err;
463 
464 		vout->cur_frm->vbuf.vb2_buf.timestamp = ts;
465 		vout->cur_frm->vbuf.sequence = vout->sequence++;
466 		vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
467 		vout->cur_frm = vout->next_frm;
468 	} else {
469 		if (list_empty(&vout->dma_queue) ||
470 				(vout->cur_frm != vout->next_frm))
471 			goto err;
472 	}
473 
474 	return vout->field_id;
475 err:
476 	return 0;
477 }
478 
479 static void omap_vout_isr(void *arg, unsigned int irqstatus)
480 {
481 	int ret, fid, mgr_id;
482 	dma_addr_t addr;
483 	u32 irq;
484 	struct omap_overlay *ovl;
485 	u64 ts;
486 	struct omapvideo_info *ovid;
487 	struct omap_dss_device *cur_display;
488 	struct omap_vout_device *vout = (struct omap_vout_device *)arg;
489 
490 	ovid = &vout->vid_info;
491 	ovl = ovid->overlays[0];
492 
493 	mgr_id = ovl->manager->id;
494 
495 	/* get the display device attached to the overlay */
496 	cur_display = ovl->get_device(ovl);
497 
498 	if (!cur_display)
499 		return;
500 
501 	spin_lock(&vout->vbq_lock);
502 	ts = ktime_get_ns();
503 
504 	switch (cur_display->type) {
505 	case OMAP_DISPLAY_TYPE_DSI:
506 	case OMAP_DISPLAY_TYPE_DPI:
507 	case OMAP_DISPLAY_TYPE_DVI:
508 		if (mgr_id == OMAP_DSS_CHANNEL_LCD)
509 			irq = DISPC_IRQ_VSYNC;
510 		else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
511 			irq = DISPC_IRQ_VSYNC2;
512 		else
513 			goto vout_isr_err;
514 
515 		if (!(irqstatus & irq))
516 			goto vout_isr_err;
517 		break;
518 	case OMAP_DISPLAY_TYPE_VENC:
519 		fid = omapvid_handle_interlace_display(vout, irqstatus,
520 				ts);
521 		if (!fid)
522 			goto vout_isr_err;
523 		break;
524 	case OMAP_DISPLAY_TYPE_HDMI:
525 		if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
526 			goto vout_isr_err;
527 		break;
528 	default:
529 		goto vout_isr_err;
530 	}
531 
532 	if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
533 		vout->cur_frm->vbuf.vb2_buf.timestamp = ts;
534 		vout->cur_frm->vbuf.sequence = vout->sequence++;
535 		vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_DONE);
536 		vout->cur_frm = vout->next_frm;
537 	}
538 
539 	vout->first_int = 0;
540 	if (list_empty(&vout->dma_queue))
541 		goto vout_isr_err;
542 
543 	vout->next_frm = list_entry(vout->dma_queue.next,
544 			struct omap_vout_buffer, queue);
545 	list_del(&vout->next_frm->queue);
546 
547 	addr = vout->queued_buf_addr[vout->next_frm->vbuf.vb2_buf.index]
548 		+ vout->cropped_offset;
549 
550 	/* First save the configuration in ovelray structure */
551 	ret = omapvid_init(vout, addr);
552 	if (ret) {
553 		printk(KERN_ERR VOUT_NAME
554 			"failed to set overlay info\n");
555 		goto vout_isr_err;
556 	}
557 
558 	/* Enable the pipeline and set the Go bit */
559 	ret = omapvid_apply_changes(vout);
560 	if (ret)
561 		printk(KERN_ERR VOUT_NAME "failed to change mode\n");
562 
563 vout_isr_err:
564 	spin_unlock(&vout->vbq_lock);
565 }
566 
567 
568 /*
569  * V4L2 ioctls
570  */
571 static int vidioc_querycap(struct file *file, void *fh,
572 		struct v4l2_capability *cap)
573 {
574 	struct omap_vout_device *vout = video_drvdata(file);
575 
576 	strscpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
577 	strscpy(cap->card, vout->vfd->name, sizeof(cap->card));
578 	snprintf(cap->bus_info, sizeof(cap->bus_info),
579 		 "platform:%s.%d", VOUT_NAME, vout->vid);
580 	return 0;
581 }
582 
583 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
584 			struct v4l2_fmtdesc *fmt)
585 {
586 	int index = fmt->index;
587 
588 	if (index >= NUM_OUTPUT_FORMATS)
589 		return -EINVAL;
590 
591 	fmt->flags = omap_formats[index].flags;
592 	fmt->pixelformat = omap_formats[index].pixelformat;
593 
594 	return 0;
595 }
596 
597 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
598 			struct v4l2_format *f)
599 {
600 	struct omap_vout_device *vout = video_drvdata(file);
601 
602 	f->fmt.pix = vout->pix;
603 	return 0;
604 
605 }
606 
607 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
608 			struct v4l2_format *f)
609 {
610 	struct omap_overlay *ovl;
611 	struct omapvideo_info *ovid;
612 	struct omap_video_timings *timing;
613 	struct omap_vout_device *vout = video_drvdata(file);
614 	struct omap_dss_device *dssdev;
615 
616 	ovid = &vout->vid_info;
617 	ovl = ovid->overlays[0];
618 	/* get the display device attached to the overlay */
619 	dssdev = ovl->get_device(ovl);
620 
621 	if (!dssdev)
622 		return -EINVAL;
623 
624 	timing = &dssdev->panel.timings;
625 
626 	vout->fbuf.fmt.height = timing->y_res;
627 	vout->fbuf.fmt.width = timing->x_res;
628 
629 	omap_vout_try_format(&f->fmt.pix);
630 	return 0;
631 }
632 
633 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
634 			struct v4l2_format *f)
635 {
636 	int ret, bpp;
637 	struct omap_overlay *ovl;
638 	struct omapvideo_info *ovid;
639 	struct omap_video_timings *timing;
640 	struct omap_vout_device *vout = video_drvdata(file);
641 	struct omap_dss_device *dssdev;
642 
643 	if (vb2_is_busy(&vout->vq))
644 		return -EBUSY;
645 
646 	ovid = &vout->vid_info;
647 	ovl = ovid->overlays[0];
648 	dssdev = ovl->get_device(ovl);
649 
650 	/* get the display device attached to the overlay */
651 	if (!dssdev) {
652 		ret = -EINVAL;
653 		goto s_fmt_vid_out_exit;
654 	}
655 	timing = &dssdev->panel.timings;
656 
657 	/* We don't support RGB24-packed mode if vrfb rotation
658 	 * is enabled*/
659 	if ((is_rotation_enabled(vout)) &&
660 			f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
661 		ret = -EINVAL;
662 		goto s_fmt_vid_out_exit;
663 	}
664 
665 	/* get the framebuffer parameters */
666 
667 	if (is_rotation_90_or_270(vout)) {
668 		vout->fbuf.fmt.height = timing->x_res;
669 		vout->fbuf.fmt.width = timing->y_res;
670 	} else {
671 		vout->fbuf.fmt.height = timing->y_res;
672 		vout->fbuf.fmt.width = timing->x_res;
673 	}
674 
675 	/* change to smaller size is OK */
676 
677 	bpp = omap_vout_try_format(&f->fmt.pix);
678 	f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
679 
680 	/* try & set the new output format */
681 	vout->bpp = bpp;
682 	vout->pix = f->fmt.pix;
683 	vout->vrfb_bpp = 1;
684 
685 	/* If YUYV then vrfb bpp is 2, for  others its 1 */
686 	if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
687 			V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
688 		vout->vrfb_bpp = 2;
689 
690 	/* set default crop and win */
691 	omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
692 
693 	ret = 0;
694 
695 s_fmt_vid_out_exit:
696 	return ret;
697 }
698 
699 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
700 			struct v4l2_format *f)
701 {
702 	int ret = 0;
703 	struct omap_vout_device *vout = video_drvdata(file);
704 	struct omap_overlay *ovl;
705 	struct omapvideo_info *ovid;
706 	struct v4l2_window *win = &f->fmt.win;
707 
708 	ovid = &vout->vid_info;
709 	ovl = ovid->overlays[0];
710 
711 	ret = omap_vout_try_window(&vout->fbuf, win);
712 
713 	if (!ret && !(ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA))
714 		win->global_alpha = 0;
715 
716 	return ret;
717 }
718 
719 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
720 			struct v4l2_format *f)
721 {
722 	int ret = 0;
723 	struct omap_overlay *ovl;
724 	struct omapvideo_info *ovid;
725 	struct omap_vout_device *vout = video_drvdata(file);
726 	struct v4l2_window *win = &f->fmt.win;
727 
728 	ovid = &vout->vid_info;
729 	ovl = ovid->overlays[0];
730 
731 	ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
732 	if (!ret) {
733 		enum omap_dss_trans_key_type key_type =
734 			OMAP_DSS_COLOR_KEY_GFX_DST;
735 		int enable;
736 
737 		/* Video1 plane does not support global alpha on OMAP3 */
738 		if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA)
739 			vout->win.global_alpha = win->global_alpha;
740 		else
741 			win->global_alpha = 0;
742 		if (vout->fbuf.flags & (V4L2_FBUF_FLAG_CHROMAKEY |
743 					V4L2_FBUF_FLAG_SRC_CHROMAKEY))
744 			enable = 1;
745 		else
746 			enable = 0;
747 		if (vout->fbuf.flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)
748 			key_type = OMAP_DSS_COLOR_KEY_VID_SRC;
749 
750 		if (ovl->manager && ovl->manager->get_manager_info &&
751 		    ovl->manager->set_manager_info) {
752 			struct omap_overlay_manager_info info;
753 
754 			ovl->manager->get_manager_info(ovl->manager, &info);
755 			info.trans_enabled = enable;
756 			info.trans_key_type = key_type;
757 			info.trans_key = vout->win.chromakey;
758 
759 			if (ovl->manager->set_manager_info(ovl->manager, &info))
760 				return -EINVAL;
761 		}
762 	}
763 	return ret;
764 }
765 
766 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
767 			struct v4l2_format *f)
768 {
769 	struct omap_overlay *ovl;
770 	struct omapvideo_info *ovid;
771 	struct omap_vout_device *vout = video_drvdata(file);
772 	struct v4l2_window *win = &f->fmt.win;
773 
774 	ovid = &vout->vid_info;
775 	ovl = ovid->overlays[0];
776 
777 	win->w = vout->win.w;
778 	win->field = vout->win.field;
779 	win->chromakey = vout->win.chromakey;
780 	if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA)
781 		win->global_alpha = vout->win.global_alpha;
782 	else
783 		win->global_alpha = 0;
784 	win->clips = NULL;
785 	win->clipcount = 0;
786 	win->bitmap = NULL;
787 	return 0;
788 }
789 
790 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
791 {
792 	struct omap_vout_device *vout = video_drvdata(file);
793 	struct v4l2_pix_format *pix = &vout->pix;
794 
795 	if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
796 		return -EINVAL;
797 
798 	switch (sel->target) {
799 	case V4L2_SEL_TGT_CROP:
800 		sel->r = vout->crop;
801 		break;
802 	case V4L2_SEL_TGT_CROP_DEFAULT:
803 		omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
804 		break;
805 	case V4L2_SEL_TGT_CROP_BOUNDS:
806 		/* Width and height are always even */
807 		sel->r.width = pix->width & ~1;
808 		sel->r.height = pix->height & ~1;
809 		break;
810 	default:
811 		return -EINVAL;
812 	}
813 	return 0;
814 }
815 
816 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
817 {
818 	int ret = -EINVAL;
819 	struct omap_vout_device *vout = video_drvdata(file);
820 	struct omapvideo_info *ovid;
821 	struct omap_overlay *ovl;
822 	struct omap_video_timings *timing;
823 	struct omap_dss_device *dssdev;
824 
825 	if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
826 		return -EINVAL;
827 
828 	if (sel->target != V4L2_SEL_TGT_CROP)
829 		return -EINVAL;
830 
831 	if (vb2_is_busy(&vout->vq))
832 		return -EBUSY;
833 
834 	ovid = &vout->vid_info;
835 	ovl = ovid->overlays[0];
836 	/* get the display device attached to the overlay */
837 	dssdev = ovl->get_device(ovl);
838 
839 	if (!dssdev) {
840 		ret = -EINVAL;
841 		goto s_crop_err;
842 	}
843 
844 	timing = &dssdev->panel.timings;
845 
846 	if (is_rotation_90_or_270(vout)) {
847 		vout->fbuf.fmt.height = timing->x_res;
848 		vout->fbuf.fmt.width = timing->y_res;
849 	} else {
850 		vout->fbuf.fmt.height = timing->y_res;
851 		vout->fbuf.fmt.width = timing->x_res;
852 	}
853 
854 	ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
855 				 &vout->fbuf, &sel->r);
856 
857 s_crop_err:
858 	return ret;
859 }
860 
861 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
862 {
863 	struct omap_vout_device *vout =
864 		container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
865 	int ret = 0;
866 
867 	switch (ctrl->id) {
868 	case V4L2_CID_ROTATE: {
869 		struct omapvideo_info *ovid;
870 		int rotation = ctrl->val;
871 
872 		ovid = &vout->vid_info;
873 
874 		if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
875 			ret = -ERANGE;
876 			break;
877 		}
878 
879 		if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
880 			ret = -EINVAL;
881 			break;
882 		}
883 
884 		if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
885 							vout->mirror)) {
886 			ret = -EINVAL;
887 			break;
888 		}
889 		break;
890 	}
891 	case V4L2_CID_BG_COLOR:
892 	{
893 		struct omap_overlay *ovl;
894 		unsigned int color = ctrl->val;
895 		struct omap_overlay_manager_info info;
896 
897 		ovl = vout->vid_info.overlays[0];
898 
899 		if (!ovl->manager || !ovl->manager->get_manager_info) {
900 			ret = -EINVAL;
901 			break;
902 		}
903 
904 		ovl->manager->get_manager_info(ovl->manager, &info);
905 		info.default_color = color;
906 		if (ovl->manager->set_manager_info(ovl->manager, &info)) {
907 			ret = -EINVAL;
908 			break;
909 		}
910 		break;
911 	}
912 	case V4L2_CID_VFLIP:
913 	{
914 		struct omapvideo_info *ovid;
915 		unsigned int mirror = ctrl->val;
916 
917 		ovid = &vout->vid_info;
918 
919 		if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
920 			ret = -ERANGE;
921 			break;
922 		}
923 
924 		if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
925 			ret = -EINVAL;
926 			break;
927 		}
928 		vout->mirror = mirror;
929 		break;
930 	}
931 	default:
932 		return -EINVAL;
933 	}
934 	return ret;
935 }
936 
937 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
938 	.s_ctrl = omap_vout_s_ctrl,
939 };
940 
941 static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
942 				     unsigned int *nbufs,
943 				     unsigned int *num_planes, unsigned int sizes[],
944 				     struct device *alloc_devs[])
945 {
946 	struct omap_vout_device *vout = vb2_get_drv_priv(vq);
947 	int size = vout->pix.sizeimage;
948 
949 	if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
950 		*nbufs = VRFB_NUM_BUFS - vq->num_buffers;
951 		if (*nbufs == 0)
952 			return -EINVAL;
953 	}
954 
955 	if (*num_planes)
956 		return sizes[0] < size ? -EINVAL : 0;
957 
958 	*num_planes = 1;
959 	sizes[0] = size;
960 	return 0;
961 }
962 
963 static int omap_vout_vb2_prepare(struct vb2_buffer *vb)
964 {
965 	struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
966 	struct omapvideo_info *ovid = &vout->vid_info;
967 	struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
968 	dma_addr_t buf_phy_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
969 
970 	if (vb2_plane_size(vb, 0) < vout->pix.sizeimage) {
971 		v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
972 			 "%s data will not fit into plane (%lu < %u)\n",
973 			__func__, vb2_plane_size(vb, 0), vout->pix.sizeimage);
974 		return -EINVAL;
975 	}
976 
977 	vb2_set_plane_payload(vb, 0, vout->pix.sizeimage);
978 	voutbuf->vbuf.field = V4L2_FIELD_NONE;
979 
980 	vout->queued_buf_addr[vb->index] = buf_phy_addr;
981 	if (ovid->rotation_type == VOUT_ROT_VRFB)
982 		return omap_vout_prepare_vrfb(vout, vb);
983 	return 0;
984 }
985 
986 static void omap_vout_vb2_queue(struct vb2_buffer *vb)
987 {
988 	struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
989 	struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
990 
991 	list_add_tail(&voutbuf->queue, &vout->dma_queue);
992 }
993 
994 static int omap_vout_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
995 {
996 	struct omap_vout_device *vout = vb2_get_drv_priv(vq);
997 	struct omapvideo_info *ovid = &vout->vid_info;
998 	struct omap_vout_buffer *buf, *tmp;
999 	dma_addr_t addr = 0;
1000 	u32 mask = 0;
1001 	int ret, j;
1002 
1003 	/* Get the next frame from the buffer queue */
1004 	vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1005 			struct omap_vout_buffer, queue);
1006 	/* Remove buffer from the buffer queue */
1007 	list_del(&vout->cur_frm->queue);
1008 	/* Initialize field_id and started member */
1009 	vout->field_id = 0;
1010 	vout->first_int = 1;
1011 	vout->sequence = 0;
1012 
1013 	if (omap_vout_calculate_offset(vout)) {
1014 		ret = -EINVAL;
1015 		goto out;
1016 	}
1017 	if (ovid->rotation_type == VOUT_ROT_VRFB)
1018 		if (omap_vout_vrfb_buffer_setup(vout, &count, 0)) {
1019 			ret = -ENOMEM;
1020 			goto out;
1021 		}
1022 
1023 	addr = vout->queued_buf_addr[vout->cur_frm->vbuf.vb2_buf.index]
1024 		+ vout->cropped_offset;
1025 
1026 	mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1027 		| DISPC_IRQ_VSYNC2;
1028 
1029 	/* First save the configuration in overlay structure */
1030 	ret = omapvid_init(vout, addr);
1031 	if (ret) {
1032 		v4l2_err(&vout->vid_dev->v4l2_dev,
1033 				"failed to set overlay info\n");
1034 		goto streamon_err1;
1035 	}
1036 
1037 	omap_dispc_register_isr(omap_vout_isr, vout, mask);
1038 
1039 	/* Enable the pipeline and set the Go bit */
1040 	ret = omapvid_apply_changes(vout);
1041 	if (ret)
1042 		v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1043 
1044 	for (j = 0; j < ovid->num_overlays; j++) {
1045 		struct omap_overlay *ovl = ovid->overlays[j];
1046 		struct omap_dss_device *dssdev = ovl->get_device(ovl);
1047 
1048 		if (dssdev) {
1049 			ret = ovl->enable(ovl);
1050 			if (ret)
1051 				goto streamon_err1;
1052 		}
1053 	}
1054 	return 0;
1055 
1056 streamon_err1:
1057 	mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1058 		| DISPC_IRQ_VSYNC2;
1059 
1060 	omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1061 
1062 	for (j = 0; j < ovid->num_overlays; j++) {
1063 		struct omap_overlay *ovl = ovid->overlays[j];
1064 		struct omap_dss_device *dssdev = ovl->get_device(ovl);
1065 
1066 		if (dssdev)
1067 			ovl->disable(ovl);
1068 	}
1069 	/* Turn of the pipeline */
1070 	if (omapvid_apply_changes(vout))
1071 		v4l2_err(&vout->vid_dev->v4l2_dev,
1072 			 "failed to change mode in streamoff\n");
1073 
1074 out:
1075 	vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
1076 	list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
1077 		list_del(&buf->queue);
1078 		vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
1079 	}
1080 	return ret;
1081 }
1082 
1083 static void omap_vout_vb2_stop_streaming(struct vb2_queue *vq)
1084 {
1085 	struct omap_vout_device *vout = vb2_get_drv_priv(vq);
1086 	struct omapvideo_info *ovid = &vout->vid_info;
1087 	struct omap_vout_buffer *buf, *tmp;
1088 	u32 mask = 0;
1089 	int j;
1090 
1091 	mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1092 		| DISPC_IRQ_VSYNC2;
1093 
1094 	omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1095 
1096 	for (j = 0; j < ovid->num_overlays; j++) {
1097 		struct omap_overlay *ovl = ovid->overlays[j];
1098 		struct omap_dss_device *dssdev = ovl->get_device(ovl);
1099 
1100 		if (dssdev)
1101 			ovl->disable(ovl);
1102 	}
1103 	/* Turn of the pipeline */
1104 	if (omapvid_apply_changes(vout))
1105 		v4l2_err(&vout->vid_dev->v4l2_dev,
1106 			 "failed to change mode in streamoff\n");
1107 
1108 	if (vout->next_frm != vout->cur_frm)
1109 		vb2_buffer_done(&vout->next_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1110 	vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1111 	list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
1112 		list_del(&buf->queue);
1113 		vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1114 	}
1115 }
1116 
1117 static int vidioc_s_fbuf(struct file *file, void *fh,
1118 				const struct v4l2_framebuffer *a)
1119 {
1120 	int enable = 0;
1121 	struct omap_overlay *ovl;
1122 	struct omapvideo_info *ovid;
1123 	struct omap_vout_device *vout = video_drvdata(file);
1124 	struct omap_overlay_manager_info info;
1125 	enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1126 
1127 	ovid = &vout->vid_info;
1128 	ovl = ovid->overlays[0];
1129 
1130 	/* OMAP DSS doesn't support Source and Destination color
1131 	   key together */
1132 	if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1133 			(a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1134 		return -EINVAL;
1135 	/* OMAP DSS Doesn't support the Destination color key
1136 	   and alpha blending together */
1137 	if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1138 			(a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1139 		return -EINVAL;
1140 
1141 	if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1142 		vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1143 		key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1144 	} else
1145 		vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1146 
1147 	if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1148 		vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1149 		key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1150 	} else
1151 		vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1152 
1153 	if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1154 				V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1155 		enable = 1;
1156 	else
1157 		enable = 0;
1158 	if (ovl->manager && ovl->manager->get_manager_info &&
1159 			ovl->manager->set_manager_info) {
1160 
1161 		ovl->manager->get_manager_info(ovl->manager, &info);
1162 		info.trans_enabled = enable;
1163 		info.trans_key_type = key_type;
1164 		info.trans_key = vout->win.chromakey;
1165 
1166 		if (ovl->manager->set_manager_info(ovl->manager, &info))
1167 			return -EINVAL;
1168 	}
1169 	if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1170 		vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1171 		enable = 1;
1172 	} else {
1173 		vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1174 		enable = 0;
1175 	}
1176 	if (ovl->manager && ovl->manager->get_manager_info &&
1177 			ovl->manager->set_manager_info) {
1178 		ovl->manager->get_manager_info(ovl->manager, &info);
1179 		/* enable this only if there is no zorder cap */
1180 		if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1181 			info.partial_alpha_enabled = enable;
1182 		if (ovl->manager->set_manager_info(ovl->manager, &info))
1183 			return -EINVAL;
1184 	}
1185 
1186 	return 0;
1187 }
1188 
1189 static int vidioc_g_fbuf(struct file *file, void *fh,
1190 		struct v4l2_framebuffer *a)
1191 {
1192 	struct omap_overlay *ovl;
1193 	struct omapvideo_info *ovid;
1194 	struct omap_vout_device *vout = video_drvdata(file);
1195 	struct omap_overlay_manager_info info;
1196 	struct omap_video_timings *timing;
1197 	struct omap_dss_device *dssdev;
1198 
1199 	ovid = &vout->vid_info;
1200 	ovl = ovid->overlays[0];
1201 	/* get the display device attached to the overlay */
1202 	dssdev = ovl->get_device(ovl);
1203 
1204 	if (!dssdev)
1205 		return -EINVAL;
1206 
1207 	timing = &dssdev->panel.timings;
1208 
1209 	vout->fbuf.fmt.height = timing->y_res;
1210 	vout->fbuf.fmt.width = timing->x_res;
1211 	a->fmt.field = V4L2_FIELD_NONE;
1212 	a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1213 	a->fmt.pixelformat = V4L2_PIX_FMT_RGBA32;
1214 	a->fmt.height = vout->fbuf.fmt.height;
1215 	a->fmt.width = vout->fbuf.fmt.width;
1216 	a->fmt.bytesperline = vout->fbuf.fmt.width * 4;
1217 	a->fmt.sizeimage = a->fmt.height * a->fmt.bytesperline;
1218 	a->base = vout->fbuf.base;
1219 
1220 	a->flags = vout->fbuf.flags;
1221 	a->capability = vout->fbuf.capability;
1222 	a->flags &= ~(V4L2_FBUF_FLAG_SRC_CHROMAKEY | V4L2_FBUF_FLAG_CHROMAKEY |
1223 		      V4L2_FBUF_FLAG_LOCAL_ALPHA);
1224 
1225 	if (ovl->manager && ovl->manager->get_manager_info) {
1226 		ovl->manager->get_manager_info(ovl->manager, &info);
1227 		if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1228 			a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1229 		if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1230 			a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1231 		if (info.partial_alpha_enabled)
1232 			a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1233 	}
1234 
1235 	return 0;
1236 }
1237 
1238 static int vidioc_enum_output(struct file *file, void *priv_fh,
1239 			      struct v4l2_output *out)
1240 {
1241 	if (out->index)
1242 		return -EINVAL;
1243 	snprintf(out->name, sizeof(out->name), "Overlay");
1244 	out->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
1245 	return 0;
1246 }
1247 
1248 static int vidioc_g_output(struct file *file, void *priv_fh, unsigned int *i)
1249 {
1250 	*i = 0;
1251 	return 0;
1252 }
1253 
1254 static int vidioc_s_output(struct file *file, void *priv_fh, unsigned int i)
1255 {
1256 	return i ? -EINVAL : 0;
1257 }
1258 
1259 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1260 	.vidioc_querycap			= vidioc_querycap,
1261 	.vidioc_enum_fmt_vid_out		= vidioc_enum_fmt_vid_out,
1262 	.vidioc_g_fmt_vid_out			= vidioc_g_fmt_vid_out,
1263 	.vidioc_try_fmt_vid_out			= vidioc_try_fmt_vid_out,
1264 	.vidioc_s_fmt_vid_out			= vidioc_s_fmt_vid_out,
1265 	.vidioc_s_fbuf				= vidioc_s_fbuf,
1266 	.vidioc_g_fbuf				= vidioc_g_fbuf,
1267 	.vidioc_try_fmt_vid_out_overlay		= vidioc_try_fmt_vid_overlay,
1268 	.vidioc_s_fmt_vid_out_overlay		= vidioc_s_fmt_vid_overlay,
1269 	.vidioc_g_fmt_vid_out_overlay		= vidioc_g_fmt_vid_overlay,
1270 	.vidioc_g_selection			= vidioc_g_selection,
1271 	.vidioc_s_selection			= vidioc_s_selection,
1272 	.vidioc_enum_output			= vidioc_enum_output,
1273 	.vidioc_g_output			= vidioc_g_output,
1274 	.vidioc_s_output			= vidioc_s_output,
1275 	.vidioc_reqbufs				= vb2_ioctl_reqbufs,
1276 	.vidioc_create_bufs			= vb2_ioctl_create_bufs,
1277 	.vidioc_querybuf			= vb2_ioctl_querybuf,
1278 	.vidioc_qbuf				= vb2_ioctl_qbuf,
1279 	.vidioc_dqbuf				= vb2_ioctl_dqbuf,
1280 	.vidioc_expbuf				= vb2_ioctl_expbuf,
1281 	.vidioc_streamon			= vb2_ioctl_streamon,
1282 	.vidioc_streamoff			= vb2_ioctl_streamoff,
1283 	.vidioc_subscribe_event			= v4l2_ctrl_subscribe_event,
1284 	.vidioc_unsubscribe_event		= v4l2_event_unsubscribe,
1285 };
1286 
1287 static const struct v4l2_file_operations omap_vout_fops = {
1288 	.owner		= THIS_MODULE,
1289 	.unlocked_ioctl	= video_ioctl2,
1290 	.poll		= vb2_fop_poll,
1291 	.mmap		= vb2_fop_mmap,
1292 	.open		= v4l2_fh_open,
1293 	.release	= vb2_fop_release,
1294 };
1295 
1296 static const struct vb2_ops omap_vout_vb2_ops = {
1297 	.queue_setup		= omap_vout_vb2_queue_setup,
1298 	.buf_queue		= omap_vout_vb2_queue,
1299 	.buf_prepare		= omap_vout_vb2_prepare,
1300 	.start_streaming	= omap_vout_vb2_start_streaming,
1301 	.stop_streaming		= omap_vout_vb2_stop_streaming,
1302 	.wait_prepare		= vb2_ops_wait_prepare,
1303 	.wait_finish		= vb2_ops_wait_finish,
1304 };
1305 
1306 /* Init functions used during driver initialization */
1307 /* Initial setup of video_data */
1308 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1309 {
1310 	struct video_device *vfd;
1311 	struct v4l2_pix_format *pix;
1312 	struct omap_overlay *ovl = vout->vid_info.overlays[0];
1313 	struct omap_dss_device *display = ovl->get_device(ovl);
1314 	struct v4l2_ctrl_handler *hdl;
1315 	struct vb2_queue *vq;
1316 	int ret;
1317 
1318 	/* set the default pix */
1319 	pix = &vout->pix;
1320 
1321 	/* Set the default picture of QVGA  */
1322 	pix->width = QQVGA_WIDTH;
1323 	pix->height = QQVGA_HEIGHT;
1324 
1325 	/* Default pixel format is RGB 5-6-5 */
1326 	pix->pixelformat = V4L2_PIX_FMT_RGB565;
1327 	pix->field = V4L2_FIELD_NONE;
1328 	pix->bytesperline = pix->width * 2;
1329 	pix->sizeimage = pix->bytesperline * pix->height;
1330 	pix->colorspace = V4L2_COLORSPACE_SRGB;
1331 
1332 	vout->bpp = RGB565_BPP;
1333 	vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1334 	vout->fbuf.fmt.height =  display->panel.timings.y_res;
1335 	vout->cropped_offset = 0;
1336 
1337 	/* Set the data structures for the overlay parameters*/
1338 	vout->fbuf.flags = V4L2_FBUF_FLAG_OVERLAY;
1339 	vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1340 		V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY |
1341 		V4L2_FBUF_CAP_EXTERNOVERLAY;
1342 	if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) {
1343 		vout->win.global_alpha = 255;
1344 		vout->fbuf.capability |= V4L2_FBUF_CAP_GLOBAL_ALPHA;
1345 		vout->fbuf.flags |= V4L2_FBUF_FLAG_GLOBAL_ALPHA;
1346 	} else {
1347 		vout->win.global_alpha = 0;
1348 	}
1349 	vout->win.field = V4L2_FIELD_NONE;
1350 
1351 	omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1352 
1353 	hdl = &vout->ctrl_handler;
1354 	v4l2_ctrl_handler_init(hdl, 3);
1355 	if (vout->vid_info.rotation_type == VOUT_ROT_VRFB) {
1356 		v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1357 				  V4L2_CID_ROTATE, 0, 270, 90, 0);
1358 		v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1359 				  V4L2_CID_VFLIP, 0, 1, 1, 0);
1360 	}
1361 	v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1362 			  V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1363 	if (hdl->error)
1364 		return hdl->error;
1365 
1366 	vout->rotation = 0;
1367 	vout->mirror = false;
1368 	INIT_LIST_HEAD(&vout->dma_queue);
1369 	if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1370 		vout->vrfb_bpp = 2;
1371 
1372 	/* initialize the video_device struct */
1373 	vfd = vout->vfd = video_device_alloc();
1374 
1375 	if (!vfd) {
1376 		printk(KERN_ERR VOUT_NAME
1377 		       ": could not allocate video device struct\n");
1378 		v4l2_ctrl_handler_free(hdl);
1379 		return -ENOMEM;
1380 	}
1381 	vfd->ctrl_handler = hdl;
1382 	vfd->release = video_device_release;
1383 	vfd->ioctl_ops = &vout_ioctl_ops;
1384 
1385 	strscpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1386 
1387 	vfd->fops = &omap_vout_fops;
1388 	vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1389 	vfd->vfl_dir = VFL_DIR_TX;
1390 	vfd->minor = -1;
1391 	vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1392 			   V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1393 	mutex_init(&vout->lock);
1394 
1395 	vq = &vout->vq;
1396 	vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1397 	vq->io_modes = VB2_MMAP | VB2_DMABUF;
1398 	vq->drv_priv = vout;
1399 	vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1400 	vq->buf_struct_size = sizeof(struct omap_vout_buffer);
1401 	vq->dev = vfd->v4l2_dev->dev;
1402 
1403 	vq->ops = &omap_vout_vb2_ops;
1404 	vq->mem_ops = &vb2_dma_contig_memops;
1405 	vq->lock = &vout->lock;
1406 	vq->min_buffers_needed = 1;
1407 	vfd->queue = vq;
1408 
1409 	ret = vb2_queue_init(vq);
1410 	if (ret) {
1411 		v4l2_ctrl_handler_free(hdl);
1412 		video_device_release(vfd);
1413 	}
1414 	return ret;
1415 }
1416 
1417 /* Setup video buffers */
1418 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1419 		int vid_num)
1420 {
1421 	struct omapvideo_info *ovid;
1422 	struct omap_vout_device *vout;
1423 	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1424 	struct omap2video_device *vid_dev =
1425 		container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1426 	int ret = 0;
1427 
1428 	vout = vid_dev->vouts[vid_num];
1429 	ovid = &vout->vid_info;
1430 
1431 	if (ovid->rotation_type == VOUT_ROT_VRFB) {
1432 		bool static_vrfb_allocation = (vid_num == 0) ?
1433 			vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1434 		ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1435 				static_vrfb_allocation);
1436 	}
1437 	return ret;
1438 }
1439 
1440 /* Create video out devices */
1441 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1442 {
1443 	int ret = 0, k;
1444 	struct omap_vout_device *vout;
1445 	struct video_device *vfd = NULL;
1446 	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1447 	struct omap2video_device *vid_dev = container_of(v4l2_dev,
1448 			struct omap2video_device, v4l2_dev);
1449 	struct omap_overlay *ovl = vid_dev->overlays[0];
1450 	struct omap_overlay_info info;
1451 
1452 	ovl->get_overlay_info(ovl, &info);
1453 
1454 	for (k = 0; k < pdev->num_resources; k++) {
1455 
1456 		vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1457 		if (!vout) {
1458 			dev_err(&pdev->dev, ": could not allocate memory\n");
1459 			return -ENOMEM;
1460 		}
1461 
1462 		vout->vid = k;
1463 		vid_dev->vouts[k] = vout;
1464 		vout->vid_dev = vid_dev;
1465 		/* Select video2 if only 1 overlay is controlled by V4L2 */
1466 		if (pdev->num_resources == 1)
1467 			vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1468 		else
1469 			/* Else select video1 and video2 one by one. */
1470 			vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1471 		vout->vid_info.num_overlays = 1;
1472 		vout->vid_info.id = k + 1;
1473 		spin_lock_init(&vout->vbq_lock);
1474 		/*
1475 		 * Set the framebuffer base, this allows applications to find
1476 		 * the fb corresponding to this overlay.
1477 		 *
1478 		 * To be precise: fbuf.base should match smem_start of
1479 		 * struct fb_fix_screeninfo.
1480 		 */
1481 		vout->fbuf.base = (void *)(uintptr_t)info.paddr;
1482 
1483 		/* Set VRFB as rotation_type for omap2 and omap3 */
1484 		if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1485 			vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1486 
1487 		/* Setup the default configuration for the video devices
1488 		 */
1489 		if (omap_vout_setup_video_data(vout) != 0) {
1490 			ret = -ENOMEM;
1491 			goto error;
1492 		}
1493 
1494 		/* Allocate default number of buffers for the video streaming
1495 		 * and reserve the VRFB space for rotation
1496 		 */
1497 		if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1498 			ret = -ENOMEM;
1499 			goto error1;
1500 		}
1501 
1502 		/* Register the Video device with V4L2
1503 		 */
1504 		vfd = vout->vfd;
1505 		if (video_register_device(vfd, VFL_TYPE_VIDEO, -1) < 0) {
1506 			dev_err(&pdev->dev,
1507 				": Could not register Video for Linux device\n");
1508 			vfd->minor = -1;
1509 			ret = -ENODEV;
1510 			goto error2;
1511 		}
1512 		video_set_drvdata(vfd, vout);
1513 
1514 		dev_info(&pdev->dev,
1515 			 ": registered and initialized video device %d\n",
1516 			 vfd->minor);
1517 		if (k == (pdev->num_resources - 1))
1518 			return 0;
1519 
1520 		continue;
1521 error2:
1522 		if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1523 			omap_vout_release_vrfb(vout);
1524 error1:
1525 		video_device_release(vfd);
1526 error:
1527 		kfree(vout);
1528 		return ret;
1529 	}
1530 
1531 	return -ENODEV;
1532 }
1533 /* Driver functions */
1534 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
1535 {
1536 	struct video_device *vfd;
1537 	struct omapvideo_info *ovid;
1538 
1539 	if (!vout)
1540 		return;
1541 
1542 	vfd = vout->vfd;
1543 	ovid = &vout->vid_info;
1544 	if (vfd) {
1545 		if (!video_is_registered(vfd)) {
1546 			/*
1547 			 * The device was never registered, so release the
1548 			 * video_device struct directly.
1549 			 */
1550 			video_device_release(vfd);
1551 		} else {
1552 			/*
1553 			 * The unregister function will release the video_device
1554 			 * struct as well as unregistering it.
1555 			 */
1556 			video_unregister_device(vfd);
1557 		}
1558 	}
1559 	v4l2_ctrl_handler_free(&vout->ctrl_handler);
1560 	if (ovid->rotation_type == VOUT_ROT_VRFB) {
1561 		omap_vout_release_vrfb(vout);
1562 		/* Free the VRFB buffer if allocated
1563 		 * init time
1564 		 */
1565 		if (vout->vrfb_static_allocation)
1566 			omap_vout_free_vrfb_buffers(vout);
1567 	}
1568 
1569 	kfree(vout);
1570 }
1571 
1572 static int omap_vout_remove(struct platform_device *pdev)
1573 {
1574 	int k;
1575 	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1576 	struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
1577 			omap2video_device, v4l2_dev);
1578 
1579 	v4l2_device_unregister(v4l2_dev);
1580 	for (k = 0; k < pdev->num_resources; k++)
1581 		omap_vout_cleanup_device(vid_dev->vouts[k]);
1582 
1583 	for (k = 0; k < vid_dev->num_displays; k++) {
1584 		if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
1585 			vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
1586 
1587 		omap_dss_put_device(vid_dev->displays[k]);
1588 	}
1589 	kfree(vid_dev);
1590 	return 0;
1591 }
1592 
1593 static int __init omap_vout_probe(struct platform_device *pdev)
1594 {
1595 	int ret = 0, i;
1596 	struct omap_overlay *ovl;
1597 	struct omap_dss_device *dssdev = NULL;
1598 	struct omap_dss_device *def_display;
1599 	struct omap2video_device *vid_dev = NULL;
1600 
1601 	if (omapdss_is_initialized() == false)
1602 		return -EPROBE_DEFER;
1603 
1604 	ret = omapdss_compat_init();
1605 	if (ret) {
1606 		dev_err(&pdev->dev, "failed to init dss\n");
1607 		return ret;
1608 	}
1609 
1610 	if (pdev->num_resources == 0) {
1611 		dev_err(&pdev->dev, "probed for an unknown device\n");
1612 		ret = -ENODEV;
1613 		goto err_dss_init;
1614 	}
1615 
1616 	vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
1617 	if (vid_dev == NULL) {
1618 		ret = -ENOMEM;
1619 		goto err_dss_init;
1620 	}
1621 
1622 	vid_dev->num_displays = 0;
1623 	for_each_dss_dev(dssdev) {
1624 		omap_dss_get_device(dssdev);
1625 
1626 		if (!dssdev->driver) {
1627 			dev_warn(&pdev->dev, "no driver for display: %s\n",
1628 					dssdev->name);
1629 			omap_dss_put_device(dssdev);
1630 			continue;
1631 		}
1632 
1633 		vid_dev->displays[vid_dev->num_displays++] = dssdev;
1634 	}
1635 
1636 	if (vid_dev->num_displays == 0) {
1637 		dev_err(&pdev->dev, "no displays\n");
1638 		ret = -EINVAL;
1639 		goto probe_err0;
1640 	}
1641 
1642 	vid_dev->num_overlays = omap_dss_get_num_overlays();
1643 	for (i = 0; i < vid_dev->num_overlays; i++)
1644 		vid_dev->overlays[i] = omap_dss_get_overlay(i);
1645 
1646 	vid_dev->num_managers = omap_dss_get_num_overlay_managers();
1647 	for (i = 0; i < vid_dev->num_managers; i++)
1648 		vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
1649 
1650 	/* Get the Video1 overlay and video2 overlay.
1651 	 * Setup the Display attached to that overlays
1652 	 */
1653 	for (i = 1; i < vid_dev->num_overlays; i++) {
1654 		ovl = omap_dss_get_overlay(i);
1655 		dssdev = ovl->get_device(ovl);
1656 
1657 		if (dssdev) {
1658 			def_display = dssdev;
1659 		} else {
1660 			dev_warn(&pdev->dev, "cannot find display\n");
1661 			def_display = NULL;
1662 		}
1663 		if (def_display) {
1664 			struct omap_dss_driver *dssdrv = def_display->driver;
1665 
1666 			ret = dssdrv->enable(def_display);
1667 			if (ret) {
1668 				/* Here we are not considering a error
1669 				 *  as display may be enabled by frame
1670 				 *  buffer driver
1671 				 */
1672 				dev_warn(&pdev->dev,
1673 					"'%s' Display already enabled\n",
1674 					def_display->name);
1675 			}
1676 		}
1677 	}
1678 
1679 	if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
1680 		dev_err(&pdev->dev, "v4l2_device_register failed\n");
1681 		ret = -ENODEV;
1682 		goto probe_err1;
1683 	}
1684 
1685 	ret = omap_vout_create_video_devices(pdev);
1686 	if (ret)
1687 		goto probe_err2;
1688 
1689 	for (i = 0; i < vid_dev->num_displays; i++) {
1690 		struct omap_dss_device *display = vid_dev->displays[i];
1691 
1692 		if (display->driver->update)
1693 			display->driver->update(display, 0, 0,
1694 					display->panel.timings.x_res,
1695 					display->panel.timings.y_res);
1696 	}
1697 	return 0;
1698 
1699 probe_err2:
1700 	v4l2_device_unregister(&vid_dev->v4l2_dev);
1701 probe_err1:
1702 	for (i = 1; i < vid_dev->num_overlays; i++) {
1703 		def_display = NULL;
1704 		ovl = omap_dss_get_overlay(i);
1705 		dssdev = ovl->get_device(ovl);
1706 
1707 		if (dssdev)
1708 			def_display = dssdev;
1709 
1710 		if (def_display && def_display->driver)
1711 			def_display->driver->disable(def_display);
1712 	}
1713 probe_err0:
1714 	kfree(vid_dev);
1715 err_dss_init:
1716 	omapdss_compat_uninit();
1717 	return ret;
1718 }
1719 
1720 static struct platform_driver omap_vout_driver = {
1721 	.driver = {
1722 		.name = VOUT_NAME,
1723 	},
1724 	.remove = omap_vout_remove,
1725 };
1726 
1727 static int __init omap_vout_init(void)
1728 {
1729 	if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
1730 		printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
1731 		return -EINVAL;
1732 	}
1733 	return 0;
1734 }
1735 
1736 static void omap_vout_cleanup(void)
1737 {
1738 	platform_driver_unregister(&omap_vout_driver);
1739 }
1740 
1741 late_initcall(omap_vout_init);
1742 module_exit(omap_vout_cleanup);
1743