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/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
  54MODULE_AUTHOR("Texas Instruments");
  55MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
  56MODULE_LICENSE("GPL");
  57
  58/* Driver Configuration macros */
  59#define VOUT_NAME		"omap_vout"
  60
  61enum omap_vout_channels {
  62	OMAP_VIDEO1,
  63	OMAP_VIDEO2,
  64};
  65
  66/* Variables configurable through module params*/
  67static bool vid1_static_vrfb_alloc;
  68static bool vid2_static_vrfb_alloc;
  69static bool debug;
  70
  71/* Module parameters */
  72module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
  73MODULE_PARM_DESC(vid1_static_vrfb_alloc,
  74	"Static allocation of the VRFB buffer for video1 device");
  75
  76module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
  77MODULE_PARM_DESC(vid2_static_vrfb_alloc,
  78	"Static allocation of the VRFB buffer for video2 device");
  79
  80module_param(debug, bool, S_IRUGO);
  81MODULE_PARM_DESC(debug, "Debug level (0-1)");
  82
  83/* list of image formats supported by OMAP2 video pipelines */
  84static 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 */
 124static 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 */
 176static 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
 200static 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 */
 238static 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 */
 278static 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
 347setup_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 */
 355static 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
 412omapvid_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 */
 420static 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
 439static 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;
 475err:
 476	return 0;
 477}
 478
 479static 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
 563vout_isr_err:
 564	spin_unlock(&vout->vbq_lock);
 565}
 566
 567
 568/*
 569 * V4L2 ioctls
 570 */
 571static 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
 583static 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
 597static 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
 607static 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
 633static 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
 695s_fmt_vid_out_exit:
 696	return ret;
 697}
 698
 699static 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
 719static 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
 766static 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
 790static 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
 816static 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
 857s_crop_err:
 858	return ret;
 859}
 860
 861static 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
 937static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
 938	.s_ctrl = omap_vout_s_ctrl,
 939};
 940
 941static 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	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 948	int size = vout->pix.sizeimage;
 949
 950	if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
 951		*nbufs = VRFB_NUM_BUFS - q_num_bufs;
 952		if (*nbufs == 0)
 953			return -EINVAL;
 954	}
 955
 956	if (*num_planes)
 957		return sizes[0] < size ? -EINVAL : 0;
 958
 959	*num_planes = 1;
 960	sizes[0] = size;
 961	return 0;
 962}
 963
 964static int omap_vout_vb2_prepare(struct vb2_buffer *vb)
 965{
 966	struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
 967	struct omapvideo_info *ovid = &vout->vid_info;
 968	struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
 969	dma_addr_t buf_phy_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
 970
 971	if (vb2_plane_size(vb, 0) < vout->pix.sizeimage) {
 972		v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 973			 "%s data will not fit into plane (%lu < %u)\n",
 974			__func__, vb2_plane_size(vb, 0), vout->pix.sizeimage);
 975		return -EINVAL;
 976	}
 977
 978	vb2_set_plane_payload(vb, 0, vout->pix.sizeimage);
 979	voutbuf->vbuf.field = V4L2_FIELD_NONE;
 980
 981	vout->queued_buf_addr[vb->index] = buf_phy_addr;
 982	if (ovid->rotation_type == VOUT_ROT_VRFB)
 983		return omap_vout_prepare_vrfb(vout, vb);
 984	return 0;
 985}
 986
 987static void omap_vout_vb2_queue(struct vb2_buffer *vb)
 988{
 989	struct omap_vout_device *vout = vb2_get_drv_priv(vb->vb2_queue);
 990	struct omap_vout_buffer *voutbuf = vb2_to_omap_vout_buffer(vb);
 991
 992	list_add_tail(&voutbuf->queue, &vout->dma_queue);
 993}
 994
 995static int omap_vout_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
 996{
 997	struct omap_vout_device *vout = vb2_get_drv_priv(vq);
 998	struct omapvideo_info *ovid = &vout->vid_info;
 999	struct omap_vout_buffer *buf, *tmp;
1000	dma_addr_t addr = 0;
1001	u32 mask = 0;
1002	int ret, j;
1003
1004	/* Get the next frame from the buffer queue */
1005	vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1006			struct omap_vout_buffer, queue);
1007	/* Remove buffer from the buffer queue */
1008	list_del(&vout->cur_frm->queue);
1009	/* Initialize field_id and started member */
1010	vout->field_id = 0;
1011	vout->first_int = 1;
1012	vout->sequence = 0;
1013
1014	if (omap_vout_calculate_offset(vout)) {
1015		ret = -EINVAL;
1016		goto out;
1017	}
1018	if (ovid->rotation_type == VOUT_ROT_VRFB)
1019		if (omap_vout_vrfb_buffer_setup(vout, &count, 0)) {
1020			ret = -ENOMEM;
1021			goto out;
1022		}
1023
1024	addr = vout->queued_buf_addr[vout->cur_frm->vbuf.vb2_buf.index]
1025		+ vout->cropped_offset;
1026
1027	mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1028		| DISPC_IRQ_VSYNC2;
1029
1030	/* First save the configuration in overlay structure */
1031	ret = omapvid_init(vout, addr);
1032	if (ret) {
1033		v4l2_err(&vout->vid_dev->v4l2_dev,
1034				"failed to set overlay info\n");
1035		goto streamon_err1;
1036	}
1037
1038	omap_dispc_register_isr(omap_vout_isr, vout, mask);
1039
1040	/* Enable the pipeline and set the Go bit */
1041	ret = omapvid_apply_changes(vout);
1042	if (ret)
1043		v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1044
1045	for (j = 0; j < ovid->num_overlays; j++) {
1046		struct omap_overlay *ovl = ovid->overlays[j];
1047		struct omap_dss_device *dssdev = ovl->get_device(ovl);
1048
1049		if (dssdev) {
1050			ret = ovl->enable(ovl);
1051			if (ret)
1052				goto streamon_err1;
1053		}
1054	}
1055	return 0;
1056
1057streamon_err1:
1058	mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1059		| DISPC_IRQ_VSYNC2;
1060
1061	omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1062
1063	for (j = 0; j < ovid->num_overlays; j++) {
1064		struct omap_overlay *ovl = ovid->overlays[j];
1065		struct omap_dss_device *dssdev = ovl->get_device(ovl);
1066
1067		if (dssdev)
1068			ovl->disable(ovl);
1069	}
1070	/* Turn of the pipeline */
1071	if (omapvid_apply_changes(vout))
1072		v4l2_err(&vout->vid_dev->v4l2_dev,
1073			 "failed to change mode in streamoff\n");
1074
1075out:
1076	vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
1077	list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
1078		list_del(&buf->queue);
1079		vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_QUEUED);
1080	}
1081	return ret;
1082}
1083
1084static void omap_vout_vb2_stop_streaming(struct vb2_queue *vq)
1085{
1086	struct omap_vout_device *vout = vb2_get_drv_priv(vq);
1087	struct omapvideo_info *ovid = &vout->vid_info;
1088	struct omap_vout_buffer *buf, *tmp;
1089	u32 mask = 0;
1090	int j;
1091
1092	mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1093		| DISPC_IRQ_VSYNC2;
1094
1095	omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1096
1097	for (j = 0; j < ovid->num_overlays; j++) {
1098		struct omap_overlay *ovl = ovid->overlays[j];
1099		struct omap_dss_device *dssdev = ovl->get_device(ovl);
1100
1101		if (dssdev)
1102			ovl->disable(ovl);
1103	}
1104	/* Turn of the pipeline */
1105	if (omapvid_apply_changes(vout))
1106		v4l2_err(&vout->vid_dev->v4l2_dev,
1107			 "failed to change mode in streamoff\n");
1108
1109	if (vout->next_frm != vout->cur_frm)
1110		vb2_buffer_done(&vout->next_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1111	vb2_buffer_done(&vout->cur_frm->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1112	list_for_each_entry_safe(buf, tmp, &vout->dma_queue, queue) {
1113		list_del(&buf->queue);
1114		vb2_buffer_done(&buf->vbuf.vb2_buf, VB2_BUF_STATE_ERROR);
1115	}
1116}
1117
1118static int vidioc_s_fbuf(struct file *file, void *fh,
1119				const struct v4l2_framebuffer *a)
1120{
1121	int enable = 0;
1122	struct omap_overlay *ovl;
1123	struct omapvideo_info *ovid;
1124	struct omap_vout_device *vout = video_drvdata(file);
1125	struct omap_overlay_manager_info info;
1126	enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1127
1128	ovid = &vout->vid_info;
1129	ovl = ovid->overlays[0];
1130
1131	/* OMAP DSS doesn't support Source and Destination color
1132	   key together */
1133	if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1134			(a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1135		return -EINVAL;
1136	/* OMAP DSS Doesn't support the Destination color key
1137	   and alpha blending together */
1138	if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1139			(a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1140		return -EINVAL;
1141
1142	if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1143		vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1144		key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1145	} else
1146		vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1147
1148	if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1149		vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1150		key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1151	} else
1152		vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1153
1154	if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1155				V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1156		enable = 1;
1157	else
1158		enable = 0;
1159	if (ovl->manager && ovl->manager->get_manager_info &&
1160			ovl->manager->set_manager_info) {
1161
1162		ovl->manager->get_manager_info(ovl->manager, &info);
1163		info.trans_enabled = enable;
1164		info.trans_key_type = key_type;
1165		info.trans_key = vout->win.chromakey;
1166
1167		if (ovl->manager->set_manager_info(ovl->manager, &info))
1168			return -EINVAL;
1169	}
1170	if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1171		vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1172		enable = 1;
1173	} else {
1174		vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1175		enable = 0;
1176	}
1177	if (ovl->manager && ovl->manager->get_manager_info &&
1178			ovl->manager->set_manager_info) {
1179		ovl->manager->get_manager_info(ovl->manager, &info);
1180		/* enable this only if there is no zorder cap */
1181		if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1182			info.partial_alpha_enabled = enable;
1183		if (ovl->manager->set_manager_info(ovl->manager, &info))
1184			return -EINVAL;
1185	}
1186
1187	return 0;
1188}
1189
1190static int vidioc_g_fbuf(struct file *file, void *fh,
1191		struct v4l2_framebuffer *a)
1192{
1193	struct omap_overlay *ovl;
1194	struct omapvideo_info *ovid;
1195	struct omap_vout_device *vout = video_drvdata(file);
1196	struct omap_overlay_manager_info info;
1197	struct omap_video_timings *timing;
1198	struct omap_dss_device *dssdev;
1199
1200	ovid = &vout->vid_info;
1201	ovl = ovid->overlays[0];
1202	/* get the display device attached to the overlay */
1203	dssdev = ovl->get_device(ovl);
1204
1205	if (!dssdev)
1206		return -EINVAL;
1207
1208	timing = &dssdev->panel.timings;
1209
1210	vout->fbuf.fmt.height = timing->y_res;
1211	vout->fbuf.fmt.width = timing->x_res;
1212	a->fmt.field = V4L2_FIELD_NONE;
1213	a->fmt.colorspace = V4L2_COLORSPACE_SRGB;
1214	a->fmt.pixelformat = V4L2_PIX_FMT_RGBA32;
1215	a->fmt.height = vout->fbuf.fmt.height;
1216	a->fmt.width = vout->fbuf.fmt.width;
1217	a->fmt.bytesperline = vout->fbuf.fmt.width * 4;
1218	a->fmt.sizeimage = a->fmt.height * a->fmt.bytesperline;
1219	a->base = vout->fbuf.base;
1220
1221	a->flags = vout->fbuf.flags;
1222	a->capability = vout->fbuf.capability;
1223	a->flags &= ~(V4L2_FBUF_FLAG_SRC_CHROMAKEY | V4L2_FBUF_FLAG_CHROMAKEY |
1224		      V4L2_FBUF_FLAG_LOCAL_ALPHA);
1225
1226	if (ovl->manager && ovl->manager->get_manager_info) {
1227		ovl->manager->get_manager_info(ovl->manager, &info);
1228		if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1229			a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1230		if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1231			a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1232		if (info.partial_alpha_enabled)
1233			a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1234	}
1235
1236	return 0;
1237}
1238
1239static int vidioc_enum_output(struct file *file, void *priv,
1240			      struct v4l2_output *out)
1241{
1242	if (out->index)
1243		return -EINVAL;
1244	snprintf(out->name, sizeof(out->name), "Overlay");
1245	out->type = V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY;
1246	return 0;
1247}
1248
1249static int vidioc_g_output(struct file *file, void *priv, unsigned int *i)
1250{
1251	*i = 0;
1252	return 0;
1253}
1254
1255static int vidioc_s_output(struct file *file, void *priv, unsigned int i)
1256{
1257	return i ? -EINVAL : 0;
1258}
1259
1260static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1261	.vidioc_querycap			= vidioc_querycap,
1262	.vidioc_enum_fmt_vid_out		= vidioc_enum_fmt_vid_out,
1263	.vidioc_g_fmt_vid_out			= vidioc_g_fmt_vid_out,
1264	.vidioc_try_fmt_vid_out			= vidioc_try_fmt_vid_out,
1265	.vidioc_s_fmt_vid_out			= vidioc_s_fmt_vid_out,
1266	.vidioc_s_fbuf				= vidioc_s_fbuf,
1267	.vidioc_g_fbuf				= vidioc_g_fbuf,
1268	.vidioc_try_fmt_vid_out_overlay		= vidioc_try_fmt_vid_overlay,
1269	.vidioc_s_fmt_vid_out_overlay		= vidioc_s_fmt_vid_overlay,
1270	.vidioc_g_fmt_vid_out_overlay		= vidioc_g_fmt_vid_overlay,
1271	.vidioc_g_selection			= vidioc_g_selection,
1272	.vidioc_s_selection			= vidioc_s_selection,
1273	.vidioc_enum_output			= vidioc_enum_output,
1274	.vidioc_g_output			= vidioc_g_output,
1275	.vidioc_s_output			= vidioc_s_output,
1276	.vidioc_reqbufs				= vb2_ioctl_reqbufs,
1277	.vidioc_create_bufs			= vb2_ioctl_create_bufs,
1278	.vidioc_querybuf			= vb2_ioctl_querybuf,
1279	.vidioc_qbuf				= vb2_ioctl_qbuf,
1280	.vidioc_dqbuf				= vb2_ioctl_dqbuf,
1281	.vidioc_expbuf				= vb2_ioctl_expbuf,
1282	.vidioc_streamon			= vb2_ioctl_streamon,
1283	.vidioc_streamoff			= vb2_ioctl_streamoff,
1284	.vidioc_subscribe_event			= v4l2_ctrl_subscribe_event,
1285	.vidioc_unsubscribe_event		= v4l2_event_unsubscribe,
1286};
1287
1288static const struct v4l2_file_operations omap_vout_fops = {
1289	.owner		= THIS_MODULE,
1290	.unlocked_ioctl	= video_ioctl2,
1291	.poll		= vb2_fop_poll,
1292	.mmap		= vb2_fop_mmap,
1293	.open		= v4l2_fh_open,
1294	.release	= vb2_fop_release,
1295};
1296
1297static const struct vb2_ops omap_vout_vb2_ops = {
1298	.queue_setup		= omap_vout_vb2_queue_setup,
1299	.buf_queue		= omap_vout_vb2_queue,
1300	.buf_prepare		= omap_vout_vb2_prepare,
1301	.start_streaming	= omap_vout_vb2_start_streaming,
1302	.stop_streaming		= omap_vout_vb2_stop_streaming,
1303};
1304
1305/* Init functions used during driver initialization */
1306/* Initial setup of video_data */
1307static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1308{
1309	struct video_device *vfd;
1310	struct v4l2_pix_format *pix;
1311	struct omap_overlay *ovl = vout->vid_info.overlays[0];
1312	struct omap_dss_device *display = ovl->get_device(ovl);
1313	struct v4l2_ctrl_handler *hdl;
1314	struct vb2_queue *vq;
1315	int ret;
1316
1317	/* set the default pix */
1318	pix = &vout->pix;
1319
1320	/* Set the default picture of QVGA  */
1321	pix->width = QQVGA_WIDTH;
1322	pix->height = QQVGA_HEIGHT;
1323
1324	/* Default pixel format is RGB 5-6-5 */
1325	pix->pixelformat = V4L2_PIX_FMT_RGB565;
1326	pix->field = V4L2_FIELD_NONE;
1327	pix->bytesperline = pix->width * 2;
1328	pix->sizeimage = pix->bytesperline * pix->height;
1329	pix->colorspace = V4L2_COLORSPACE_SRGB;
1330
1331	vout->bpp = RGB565_BPP;
1332	vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1333	vout->fbuf.fmt.height =  display->panel.timings.y_res;
1334	vout->cropped_offset = 0;
1335
1336	/* Set the data structures for the overlay parameters*/
1337	vout->fbuf.flags = V4L2_FBUF_FLAG_OVERLAY;
1338	vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1339		V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY |
1340		V4L2_FBUF_CAP_EXTERNOVERLAY;
1341	if (ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) {
1342		vout->win.global_alpha = 255;
1343		vout->fbuf.capability |= V4L2_FBUF_CAP_GLOBAL_ALPHA;
1344		vout->fbuf.flags |= V4L2_FBUF_FLAG_GLOBAL_ALPHA;
1345	} else {
1346		vout->win.global_alpha = 0;
1347	}
1348	vout->win.field = V4L2_FIELD_NONE;
1349
1350	omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1351
1352	hdl = &vout->ctrl_handler;
1353	v4l2_ctrl_handler_init(hdl, 3);
1354	if (vout->vid_info.rotation_type == VOUT_ROT_VRFB) {
1355		v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1356				  V4L2_CID_ROTATE, 0, 270, 90, 0);
1357		v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1358				  V4L2_CID_VFLIP, 0, 1, 1, 0);
1359	}
1360	v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1361			  V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1362	if (hdl->error)
1363		return hdl->error;
1364
1365	vout->rotation = 0;
1366	vout->mirror = false;
1367	INIT_LIST_HEAD(&vout->dma_queue);
1368	if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1369		vout->vrfb_bpp = 2;
1370
1371	/* initialize the video_device struct */
1372	vfd = vout->vfd = video_device_alloc();
1373
1374	if (!vfd) {
1375		printk(KERN_ERR VOUT_NAME
1376		       ": could not allocate video device struct\n");
1377		v4l2_ctrl_handler_free(hdl);
1378		return -ENOMEM;
1379	}
1380	vfd->ctrl_handler = hdl;
1381	vfd->release = video_device_release;
1382	vfd->ioctl_ops = &vout_ioctl_ops;
1383
1384	strscpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1385
1386	vfd->fops = &omap_vout_fops;
1387	vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1388	vfd->vfl_dir = VFL_DIR_TX;
1389	vfd->minor = -1;
1390	vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1391			   V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1392	mutex_init(&vout->lock);
1393
1394	vq = &vout->vq;
1395	vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1396	vq->io_modes = VB2_MMAP | VB2_DMABUF;
1397	vq->drv_priv = vout;
1398	vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1399	vq->buf_struct_size = sizeof(struct omap_vout_buffer);
1400	vq->dev = vfd->v4l2_dev->dev;
1401
1402	vq->ops = &omap_vout_vb2_ops;
1403	vq->mem_ops = &vb2_dma_contig_memops;
1404	vq->lock = &vout->lock;
1405	vq->min_queued_buffers = 1;
1406	vfd->queue = vq;
1407
1408	ret = vb2_queue_init(vq);
1409	if (ret) {
1410		v4l2_ctrl_handler_free(hdl);
1411		video_device_release(vfd);
1412	}
1413	return ret;
1414}
1415
1416/* Setup video buffers */
1417static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1418		int vid_num)
1419{
1420	struct omapvideo_info *ovid;
1421	struct omap_vout_device *vout;
1422	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1423	struct omap2video_device *vid_dev =
1424		container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1425	int ret = 0;
1426
1427	vout = vid_dev->vouts[vid_num];
1428	ovid = &vout->vid_info;
1429
1430	if (ovid->rotation_type == VOUT_ROT_VRFB) {
1431		bool static_vrfb_allocation = (vid_num == 0) ?
1432			vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1433		ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1434				static_vrfb_allocation);
1435	}
1436	return ret;
1437}
1438
1439/* Create video out devices */
1440static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1441{
1442	int ret = 0, k;
1443	struct omap_vout_device *vout;
1444	struct video_device *vfd = NULL;
1445	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1446	struct omap2video_device *vid_dev = container_of(v4l2_dev,
1447			struct omap2video_device, v4l2_dev);
1448	struct omap_overlay *ovl = vid_dev->overlays[0];
1449	struct omap_overlay_info info;
1450
1451	ovl->get_overlay_info(ovl, &info);
1452
1453	for (k = 0; k < pdev->num_resources; k++) {
1454
1455		vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1456		if (!vout) {
1457			dev_err(&pdev->dev, ": could not allocate memory\n");
1458			return -ENOMEM;
1459		}
1460
1461		vout->vid = k;
1462		vid_dev->vouts[k] = vout;
1463		vout->vid_dev = vid_dev;
1464		/* Select video2 if only 1 overlay is controlled by V4L2 */
1465		if (pdev->num_resources == 1)
1466			vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1467		else
1468			/* Else select video1 and video2 one by one. */
1469			vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1470		vout->vid_info.num_overlays = 1;
1471		vout->vid_info.id = k + 1;
1472		spin_lock_init(&vout->vbq_lock);
1473		/*
1474		 * Set the framebuffer base, this allows applications to find
1475		 * the fb corresponding to this overlay.
1476		 *
1477		 * To be precise: fbuf.base should match smem_start of
1478		 * struct fb_fix_screeninfo.
1479		 */
1480		vout->fbuf.base = (void *)(uintptr_t)info.paddr;
1481
1482		/* Set VRFB as rotation_type for omap2 and omap3 */
1483		if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1484			vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1485
1486		/* Setup the default configuration for the video devices
1487		 */
1488		if (omap_vout_setup_video_data(vout) != 0) {
1489			ret = -ENOMEM;
1490			goto error;
1491		}
1492
1493		/* Allocate default number of buffers for the video streaming
1494		 * and reserve the VRFB space for rotation
1495		 */
1496		if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1497			ret = -ENOMEM;
1498			goto error1;
1499		}
1500
1501		/* Register the Video device with V4L2
1502		 */
1503		vfd = vout->vfd;
1504		if (video_register_device(vfd, VFL_TYPE_VIDEO, -1) < 0) {
1505			dev_err(&pdev->dev,
1506				": Could not register Video for Linux device\n");
1507			vfd->minor = -1;
1508			ret = -ENODEV;
1509			goto error2;
1510		}
1511		video_set_drvdata(vfd, vout);
1512
1513		dev_info(&pdev->dev,
1514			 ": registered and initialized video device %d\n",
1515			 vfd->minor);
1516		if (k == (pdev->num_resources - 1))
1517			return 0;
1518
1519		continue;
1520error2:
1521		if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1522			omap_vout_release_vrfb(vout);
1523error1:
1524		video_device_release(vfd);
1525error:
1526		kfree(vout);
1527		return ret;
1528	}
1529
1530	return -ENODEV;
1531}
1532/* Driver functions */
1533static void omap_vout_cleanup_device(struct omap_vout_device *vout)
1534{
1535	struct video_device *vfd;
1536	struct omapvideo_info *ovid;
1537
1538	if (!vout)
1539		return;
1540
1541	vfd = vout->vfd;
1542	ovid = &vout->vid_info;
1543	if (vfd) {
1544		if (!video_is_registered(vfd)) {
1545			/*
1546			 * The device was never registered, so release the
1547			 * video_device struct directly.
1548			 */
1549			video_device_release(vfd);
1550		} else {
1551			/*
1552			 * The unregister function will release the video_device
1553			 * struct as well as unregistering it.
1554			 */
1555			video_unregister_device(vfd);
1556		}
1557	}
1558	v4l2_ctrl_handler_free(&vout->ctrl_handler);
1559	if (ovid->rotation_type == VOUT_ROT_VRFB) {
1560		omap_vout_release_vrfb(vout);
1561		/* Free the VRFB buffer if allocated
1562		 * init time
1563		 */
1564		if (vout->vrfb_static_allocation)
1565			omap_vout_free_vrfb_buffers(vout);
1566	}
1567
1568	kfree(vout);
1569}
1570
1571static void omap_vout_remove(struct platform_device *pdev)
1572{
1573	int k;
1574	struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1575	struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
1576			omap2video_device, v4l2_dev);
1577
1578	v4l2_device_unregister(v4l2_dev);
1579	for (k = 0; k < pdev->num_resources; k++)
1580		omap_vout_cleanup_device(vid_dev->vouts[k]);
1581
1582	for (k = 0; k < vid_dev->num_displays; k++) {
1583		if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
1584			vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
1585
1586		omap_dss_put_device(vid_dev->displays[k]);
1587	}
1588	kfree(vid_dev);
1589}
1590
1591static int __init omap_vout_probe(struct platform_device *pdev)
1592{
1593	int ret = 0, i;
1594	struct omap_overlay *ovl;
1595	struct omap_dss_device *dssdev = NULL;
1596	struct omap_dss_device *def_display;
1597	struct omap2video_device *vid_dev = NULL;
1598
1599	if (omapdss_is_initialized() == false)
1600		return -EPROBE_DEFER;
1601
1602	ret = omapdss_compat_init();
1603	if (ret) {
1604		dev_err(&pdev->dev, "failed to init dss\n");
1605		return ret;
1606	}
1607
1608	if (pdev->num_resources == 0) {
1609		dev_err(&pdev->dev, "probed for an unknown device\n");
1610		ret = -ENODEV;
1611		goto err_dss_init;
1612	}
1613
1614	vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
1615	if (vid_dev == NULL) {
1616		ret = -ENOMEM;
1617		goto err_dss_init;
1618	}
1619
1620	vid_dev->num_displays = 0;
1621	for_each_dss_dev(dssdev) {
1622		omap_dss_get_device(dssdev);
1623
1624		if (!dssdev->driver) {
1625			dev_warn(&pdev->dev, "no driver for display: %s\n",
1626					dssdev->name);
1627			omap_dss_put_device(dssdev);
1628			continue;
1629		}
1630
1631		vid_dev->displays[vid_dev->num_displays++] = dssdev;
1632	}
1633
1634	if (vid_dev->num_displays == 0) {
1635		dev_err(&pdev->dev, "no displays\n");
1636		ret = -EINVAL;
1637		goto probe_err0;
1638	}
1639
1640	vid_dev->num_overlays = omap_dss_get_num_overlays();
1641	for (i = 0; i < vid_dev->num_overlays; i++)
1642		vid_dev->overlays[i] = omap_dss_get_overlay(i);
1643
1644	vid_dev->num_managers = omap_dss_get_num_overlay_managers();
1645	for (i = 0; i < vid_dev->num_managers; i++)
1646		vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
1647
1648	/* Get the Video1 overlay and video2 overlay.
1649	 * Setup the Display attached to that overlays
1650	 */
1651	for (i = 1; i < vid_dev->num_overlays; i++) {
1652		ovl = omap_dss_get_overlay(i);
1653		dssdev = ovl->get_device(ovl);
1654
1655		if (dssdev) {
1656			def_display = dssdev;
1657		} else {
1658			dev_warn(&pdev->dev, "cannot find display\n");
1659			def_display = NULL;
1660		}
1661		if (def_display) {
1662			struct omap_dss_driver *dssdrv = def_display->driver;
1663
1664			ret = dssdrv->enable(def_display);
1665			if (ret) {
1666				/* Here we are not considering a error
1667				 *  as display may be enabled by frame
1668				 *  buffer driver
1669				 */
1670				dev_warn(&pdev->dev,
1671					"'%s' Display already enabled\n",
1672					def_display->name);
1673			}
1674		}
1675	}
1676
1677	if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
1678		dev_err(&pdev->dev, "v4l2_device_register failed\n");
1679		ret = -ENODEV;
1680		goto probe_err1;
1681	}
1682
1683	ret = omap_vout_create_video_devices(pdev);
1684	if (ret)
1685		goto probe_err2;
1686
1687	for (i = 0; i < vid_dev->num_displays; i++) {
1688		struct omap_dss_device *display = vid_dev->displays[i];
1689
1690		if (display->driver->update)
1691			display->driver->update(display, 0, 0,
1692					display->panel.timings.x_res,
1693					display->panel.timings.y_res);
1694	}
1695	return 0;
1696
1697probe_err2:
1698	v4l2_device_unregister(&vid_dev->v4l2_dev);
1699probe_err1:
1700	for (i = 1; i < vid_dev->num_overlays; i++) {
1701		def_display = NULL;
1702		ovl = omap_dss_get_overlay(i);
1703		dssdev = ovl->get_device(ovl);
1704
1705		if (dssdev)
1706			def_display = dssdev;
1707
1708		if (def_display && def_display->driver)
1709			def_display->driver->disable(def_display);
1710	}
1711probe_err0:
1712	kfree(vid_dev);
1713err_dss_init:
1714	omapdss_compat_uninit();
1715	return ret;
1716}
1717
1718static struct platform_driver omap_vout_driver = {
1719	.driver = {
1720		.name = VOUT_NAME,
1721	},
1722	.remove = omap_vout_remove,
1723};
1724
1725static int __init omap_vout_init(void)
1726{
1727	if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
1728		printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
1729		return -EINVAL;
1730	}
1731	return 0;
1732}
1733
1734static void omap_vout_cleanup(void)
1735{
1736	platform_driver_unregister(&omap_vout_driver);
1737}
1738
1739late_initcall(omap_vout_init);
1740module_exit(omap_vout_cleanup);