[deliverable/linux.git] / drivers / media / platform / vivid / vivid-vid-common.c

/*
 * vivid-vid-common.c - common video support functions.
 *
 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 *
 * This program is free software; you may redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/videodev2.h>
#include <linux/v4l2-dv-timings.h>
#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/v4l2-dv-timings.h>

#include "vivid-core.h"
#include "vivid-vid-common.h"

const struct v4l2_dv_timings_cap vivid_dv_timings_cap = {
	.type = V4L2_DV_BT_656_1120,
	/* keep this initialization for compatibility with GCC < 4.4.6 */
	.reserved = { 0 },
	V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 25000000, 600000000,
		V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT,
		V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
};

/* ------------------------------------------------------------------
	Basic structures
   ------------------------------------------------------------------*/

struct vivid_fmt vivid_formats[] = {
	{
		.name     = "4:2:2, packed, YUYV",
		.fourcc   = V4L2_PIX_FMT_YUYV,
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.is_yuv   = true,
		.planes   = 1,
		.buffers = 1,
		.data_offset = { PLANE0_DATA_OFFSET, 0 },
	},
	{
		.name     = "4:2:2, packed, UYVY",
		.fourcc   = V4L2_PIX_FMT_UYVY,
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.is_yuv   = true,
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "4:2:2, packed, YVYU",
		.fourcc   = V4L2_PIX_FMT_YVYU,
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.is_yuv   = true,
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "4:2:2, packed, VYUY",
		.fourcc   = V4L2_PIX_FMT_VYUY,
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.is_yuv   = true,
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "RGB565 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.planes   = 1,
		.buffers = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "RGB565 (BE)",
		.fourcc   = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.planes   = 1,
		.buffers = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "RGB555 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.planes   = 1,
		.buffers = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "XRGB555 (LE)",
		.fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.planes   = 1,
		.buffers = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "ARGB555 (LE)",
		.fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.planes   = 1,
		.buffers = 1,
		.can_do_overlay = true,
		.alpha_mask = 0x8000,
	},
	{
		.name     = "RGB555 (BE)",
		.fourcc   = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
		.vdownsampling = { 1 },
		.bit_depth = { 16 },
		.planes   = 1,
		.buffers = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "RGB24 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB24, /* rgb */
		.vdownsampling = { 1 },
		.bit_depth = { 24 },
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "RGB24 (BE)",
		.fourcc   = V4L2_PIX_FMT_BGR24, /* bgr */
		.vdownsampling = { 1 },
		.bit_depth = { 24 },
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "RGB32 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB32, /* argb */
		.vdownsampling = { 1 },
		.bit_depth = { 32 },
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "RGB32 (BE)",
		.fourcc   = V4L2_PIX_FMT_BGR32, /* bgra */
		.vdownsampling = { 1 },
		.bit_depth = { 32 },
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "XRGB32 (LE)",
		.fourcc   = V4L2_PIX_FMT_XRGB32, /* argb */
		.vdownsampling = { 1 },
		.bit_depth = { 32 },
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "XRGB32 (BE)",
		.fourcc   = V4L2_PIX_FMT_XBGR32, /* bgra */
		.vdownsampling = { 1 },
		.bit_depth = { 32 },
		.planes   = 1,
		.buffers = 1,
	},
	{
		.name     = "ARGB32 (LE)",
		.fourcc   = V4L2_PIX_FMT_ARGB32, /* argb */
		.vdownsampling = { 1 },
		.bit_depth = { 32 },
		.planes   = 1,
		.buffers = 1,
		.alpha_mask = 0x000000ff,
	},
	{
		.name     = "ARGB32 (BE)",
		.fourcc   = V4L2_PIX_FMT_ABGR32, /* bgra */
		.vdownsampling = { 1 },
		.bit_depth = { 32 },
		.planes   = 1,
		.buffers = 1,
		.alpha_mask = 0xff000000,
	},
	{
		.name     = "4:2:2, biplanar, YUV",
		.fourcc   = V4L2_PIX_FMT_NV16M,
		.vdownsampling = { 1, 1 },
		.bit_depth = { 8, 8 },
		.is_yuv   = true,
		.planes   = 2,
		.buffers = 2,
		.data_offset = { PLANE0_DATA_OFFSET, 0 },
	},
	{
		.name     = "4:2:2, biplanar, YVU",
		.fourcc   = V4L2_PIX_FMT_NV61M,
		.vdownsampling = { 1, 1 },
		.bit_depth = { 8, 8 },
		.is_yuv   = true,
		.planes   = 2,
		.buffers = 2,
		.data_offset = { 0, PLANE0_DATA_OFFSET },
	},
};

/* There are 2 multiplanar formats in the list */
#define VIVID_MPLANAR_FORMATS 2

const struct vivid_fmt *vivid_get_format(struct vivid_dev *dev, u32 pixelformat)
{
	const struct vivid_fmt *fmt;
	unsigned k;

	for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
		fmt = &vivid_formats[k];
		if (fmt->fourcc == pixelformat)
			if (fmt->planes == 1 || dev->multiplanar)
				return fmt;
	}

	return NULL;
}

bool vivid_vid_can_loop(struct vivid_dev *dev)
{
	if (dev->src_rect.width != dev->sink_rect.width ||
	    dev->src_rect.height != dev->sink_rect.height)
		return false;
	if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
		return false;
	if (dev->field_cap != dev->field_out)
		return false;
	/*
	 * While this can be supported, it is just too much work
	 * to actually implement.
	 */
	if (dev->field_cap == V4L2_FIELD_SEQ_TB ||
	    dev->field_cap == V4L2_FIELD_SEQ_BT)
		return false;
	if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
		if (!(dev->std_cap & V4L2_STD_525_60) !=
		    !(dev->std_out & V4L2_STD_525_60))
			return false;
		return true;
	}
	if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
		return true;
	return false;
}

void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
{
	struct v4l2_event ev = {
		.type = V4L2_EVENT_SOURCE_CHANGE,
		.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
	};
	unsigned i;

	for (i = 0; i < dev->num_inputs; i++) {
		ev.id = i;
		if (dev->input_type[i] == type) {
			if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
				v4l2_event_queue(&dev->vid_cap_dev, &ev);
			if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
				v4l2_event_queue(&dev->vbi_cap_dev, &ev);
		}
	}
}

/*
 * Conversion function that converts a single-planar format to a
 * single-plane multiplanar format.
 */
void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
{
	struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
	struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
	const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
	bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;

	memset(mp->reserved, 0, sizeof(mp->reserved));
	mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
			   V4L2_CAP_VIDEO_CAPTURE_MPLANE;
	mp->width = pix->width;
	mp->height = pix->height;
	mp->pixelformat = pix->pixelformat;
	mp->field = pix->field;
	mp->colorspace = pix->colorspace;
	mp->ycbcr_enc = pix->ycbcr_enc;
	mp->quantization = pix->quantization;
	mp->num_planes = 1;
	mp->flags = pix->flags;
	ppix->sizeimage = pix->sizeimage;
	ppix->bytesperline = pix->bytesperline;
	memset(ppix->reserved, 0, sizeof(ppix->reserved));
}

int fmt_sp2mp_func(struct file *file, void *priv,
		struct v4l2_format *f, fmtfunc func)
{
	struct v4l2_format fmt;
	struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
	struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
	struct v4l2_pix_format *pix = &f->fmt.pix;
	int ret;

	/* Converts to a mplane format */
	fmt_sp2mp(f, &fmt);
	/* Passes it to the generic mplane format function */
	ret = func(file, priv, &fmt);
	/* Copies back the mplane data to the single plane format */
	pix->width = mp->width;
	pix->height = mp->height;
	pix->pixelformat = mp->pixelformat;
	pix->field = mp->field;
	pix->colorspace = mp->colorspace;
	pix->ycbcr_enc = mp->ycbcr_enc;
	pix->quantization = mp->quantization;
	pix->sizeimage = ppix->sizeimage;
	pix->bytesperline = ppix->bytesperline;
	pix->flags = mp->flags;
	return ret;
}

/* v4l2_rect helper function: copy the width/height values */
void rect_set_size_to(struct v4l2_rect *r, const struct v4l2_rect *size)
{
	r->width = size->width;
	r->height = size->height;
}

/* v4l2_rect helper function: width and height of r should be >= min_size */
void rect_set_min_size(struct v4l2_rect *r, const struct v4l2_rect *min_size)
{
	if (r->width < min_size->width)
		r->width = min_size->width;
	if (r->height < min_size->height)
		r->height = min_size->height;
}

/* v4l2_rect helper function: width and height of r should be <= max_size */
void rect_set_max_size(struct v4l2_rect *r, const struct v4l2_rect *max_size)
{
	if (r->width > max_size->width)
		r->width = max_size->width;
	if (r->height > max_size->height)
		r->height = max_size->height;
}

/* v4l2_rect helper function: r should be inside boundary */
void rect_map_inside(struct v4l2_rect *r, const struct v4l2_rect *boundary)
{
	rect_set_max_size(r, boundary);
	if (r->left < boundary->left)
		r->left = boundary->left;
	if (r->top < boundary->top)
		r->top = boundary->top;
	if (r->left + r->width > boundary->width)
		r->left = boundary->width - r->width;
	if (r->top + r->height > boundary->height)
		r->top = boundary->height - r->height;
}

/* v4l2_rect helper function: return true if r1 has the same size as r2 */
bool rect_same_size(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
{
	return r1->width == r2->width && r1->height == r2->height;
}

/* v4l2_rect helper function: calculate the intersection of two rects */
struct v4l2_rect rect_intersect(const struct v4l2_rect *a, const struct v4l2_rect *b)
{
	struct v4l2_rect r;
	int right, bottom;

	r.top = max(a->top, b->top);
	r.left = max(a->left, b->left);
	bottom = min(a->top + a->height, b->top + b->height);
	right = min(a->left + a->width, b->left + b->width);
	r.height = max(0, bottom - r.top);
	r.width = max(0, right - r.left);
	return r;
}

/*
 * v4l2_rect helper function: scale rect r by to->width / from->width and
 * to->height / from->height.
 */
void rect_scale(struct v4l2_rect *r, const struct v4l2_rect *from,
				     const struct v4l2_rect *to)
{
	if (from->width == 0 || from->height == 0) {
		r->left = r->top = r->width = r->height = 0;
		return;
	}
	r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
	r->width = ((r->width * to->width) / from->width) & ~1;
	r->top = ((r->top - from->top) * to->height) / from->height;
	r->height = (r->height * to->height) / from->height;
}

bool rect_overlap(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
{
	/*
	 * IF the left side of r1 is to the right of the right side of r2 OR
	 *    the left side of r2 is to the right of the right side of r1 THEN
	 * they do not overlap.
	 */
	if (r1->left >= r2->left + r2->width ||
	    r2->left >= r1->left + r1->width)
		return false;
	/*
	 * IF the top side of r1 is below the bottom of r2 OR
	 *    the top side of r2 is below the bottom of r1 THEN
	 * they do not overlap.
	 */
	if (r1->top >= r2->top + r2->height ||
	    r2->top >= r1->top + r1->height)
		return false;
	return true;
}
int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
{
	unsigned w = r->width;
	unsigned h = r->height;

	if (!(flags & V4L2_SEL_FLAG_LE)) {
		w++;
		h++;
		if (w < 2)
			w = 2;
		if (h < 2)
			h = 2;
	}
	if (!(flags & V4L2_SEL_FLAG_GE)) {
		if (w > MAX_WIDTH)
			w = MAX_WIDTH;
		if (h > MAX_HEIGHT)
			h = MAX_HEIGHT;
	}
	w = w & ~1;
	h = h & ~1;
	if (w < 2 || h < 2)
		return -ERANGE;
	if (w > MAX_WIDTH || h > MAX_HEIGHT)
		return -ERANGE;
	if (r->top < 0)
		r->top = 0;
	if (r->left < 0)
		r->left = 0;
	r->left &= ~1;
	r->top &= ~1;
	if (r->left + w > MAX_WIDTH)
		r->left = MAX_WIDTH - w;
	if (r->top + h > MAX_HEIGHT)
		r->top = MAX_HEIGHT - h;
	if ((flags & (V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE)) ==
			(V4L2_SEL_FLAG_GE | V4L2_SEL_FLAG_LE) &&
	    (r->width != w || r->height != h))
		return -ERANGE;
	r->width = w;
	r->height = h;
	return 0;
}

int vivid_enum_fmt_vid(struct file *file, void  *priv,
					struct v4l2_fmtdesc *f)
{
	struct vivid_dev *dev = video_drvdata(file);
	const struct vivid_fmt *fmt;

	if (f->index >= ARRAY_SIZE(vivid_formats) -
	    (dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
		return -EINVAL;

	fmt = &vivid_formats[f->index];

	strlcpy(f->description, fmt->name, sizeof(f->description));
	f->pixelformat = fmt->fourcc;
	return 0;
}

int vidioc_enum_fmt_vid_mplane(struct file *file, void  *priv,
					struct v4l2_fmtdesc *f)
{
	struct vivid_dev *dev = video_drvdata(file);

	if (!dev->multiplanar)
		return -ENOTTY;
	return vivid_enum_fmt_vid(file, priv, f);
}

int vidioc_enum_fmt_vid(struct file *file, void  *priv,
					struct v4l2_fmtdesc *f)
{
	struct vivid_dev *dev = video_drvdata(file);

	if (dev->multiplanar)
		return -ENOTTY;
	return vivid_enum_fmt_vid(file, priv, f);
}

int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
{
	struct vivid_dev *dev = video_drvdata(file);
	struct video_device *vdev = video_devdata(file);

	if (vdev->vfl_dir == VFL_DIR_RX) {
		if (!vivid_is_sdtv_cap(dev))
			return -ENODATA;
		*id = dev->std_cap;
	} else {
		if (!vivid_is_svid_out(dev))
			return -ENODATA;
		*id = dev->std_out;
	}
	return 0;
}

int vidioc_g_dv_timings(struct file *file, void *_fh,
				    struct v4l2_dv_timings *timings)
{
	struct vivid_dev *dev = video_drvdata(file);
	struct video_device *vdev = video_devdata(file);

	if (vdev->vfl_dir == VFL_DIR_RX) {
		if (!vivid_is_hdmi_cap(dev))
			return -ENODATA;
		*timings = dev->dv_timings_cap;
	} else {
		if (!vivid_is_hdmi_out(dev))
			return -ENODATA;
		*timings = dev->dv_timings_out;
	}
	return 0;
}

int vidioc_enum_dv_timings(struct file *file, void *_fh,
				    struct v4l2_enum_dv_timings *timings)
{
	struct vivid_dev *dev = video_drvdata(file);
	struct video_device *vdev = video_devdata(file);

	if (vdev->vfl_dir == VFL_DIR_RX) {
		if (!vivid_is_hdmi_cap(dev))
			return -ENODATA;
	} else {
		if (!vivid_is_hdmi_out(dev))
			return -ENODATA;
	}
	return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
			NULL, NULL);
}

int vidioc_dv_timings_cap(struct file *file, void *_fh,
				    struct v4l2_dv_timings_cap *cap)
{
	struct vivid_dev *dev = video_drvdata(file);
	struct video_device *vdev = video_devdata(file);

	if (vdev->vfl_dir == VFL_DIR_RX) {
		if (!vivid_is_hdmi_cap(dev))
			return -ENODATA;
	} else {
		if (!vivid_is_hdmi_out(dev))
			return -ENODATA;
	}
	*cap = vivid_dv_timings_cap;
	return 0;
}

int vidioc_g_edid(struct file *file, void *_fh,
			 struct v4l2_edid *edid)
{
	struct vivid_dev *dev = video_drvdata(file);
	struct video_device *vdev = video_devdata(file);

	memset(edid->reserved, 0, sizeof(edid->reserved));
	if (vdev->vfl_dir == VFL_DIR_RX) {
		if (edid->pad >= dev->num_inputs)
			return -EINVAL;
		if (dev->input_type[edid->pad] != HDMI)
			return -EINVAL;
	} else {
		if (edid->pad >= dev->num_outputs)
			return -EINVAL;
		if (dev->output_type[edid->pad] != HDMI)
			return -EINVAL;
	}
	if (edid->start_block == 0 && edid->blocks == 0) {
		edid->blocks = dev->edid_blocks;
		return 0;
	}
	if (dev->edid_blocks == 0)
		return -ENODATA;
	if (edid->start_block >= dev->edid_blocks)
		return -EINVAL;
	if (edid->start_block + edid->blocks > dev->edid_blocks)
		edid->blocks = dev->edid_blocks - edid->start_block;
	memcpy(edid->edid, dev->edid, edid->blocks * 128);
	return 0;
}
Commit	Line	Data
ef834f78 HV	1	/*
	2	* vivid-vid-common.c - common video support functions.
	3	*
	4	* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
	5	*
	6	* This program is free software; you may redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; version 2 of the License.
	9	*
	10	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	11	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	12	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	13	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	14	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	15	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	16	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	17	* SOFTWARE.
	18	*/
	19
	20	#include <linux/errno.h>
	21	#include <linux/kernel.h>
	22	#include <linux/sched.h>
	23	#include <linux/videodev2.h>
	24	#include <linux/v4l2-dv-timings.h>
	25	#include <media/v4l2-common.h>
	26	#include <media/v4l2-event.h>
	27	#include <media/v4l2-dv-timings.h>
	28
	29	#include "vivid-core.h"
	30	#include "vivid-vid-common.h"
	31
	32	const struct v4l2_dv_timings_cap vivid_dv_timings_cap = {
	33	.type = V4L2_DV_BT_656_1120,
	34	/* keep this initialization for compatibility with GCC < 4.4.6 */
	35	.reserved = { 0 },
	36	V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 25000000, 600000000,
	37	V4L2_DV_BT_STD_CEA861 \| V4L2_DV_BT_STD_DMT,
	38	V4L2_DV_BT_CAP_PROGRESSIVE \| V4L2_DV_BT_CAP_INTERLACED)
	39	};
	40
	41	/* ------------------------------------------------------------------
	42	Basic structures
	43	------------------------------------------------------------------*/
	44
	45	struct vivid_fmt vivid_formats[] = {
	46	{
	47	.name = "4:2:2, packed, YUYV",
	48	.fourcc = V4L2_PIX_FMT_YUYV,
96c76efa HV	49	.vdownsampling = { 1 },
96c76efa HV	50	.bit_depth = { 16 },
ef834f78 HV	51	.is_yuv = true,
ef834f78 HV	52	.planes = 1,
96c76efa	53	.buffers = 1,
ef834f78 HV	54	.data_offset = { PLANE0_DATA_OFFSET, 0 },
	55	},
	56	{
	57	.name = "4:2:2, packed, UYVY",
	58	.fourcc = V4L2_PIX_FMT_UYVY,
96c76efa HV	59	.vdownsampling = { 1 },
96c76efa HV	60	.bit_depth = { 16 },
ef834f78 HV	61	.is_yuv = true,
ef834f78 HV	62	.planes = 1,
96c76efa	63	.buffers = 1,
ef834f78 HV	64	},
	65	{
	66	.name = "4:2:2, packed, YVYU",
	67	.fourcc = V4L2_PIX_FMT_YVYU,
96c76efa HV	68	.vdownsampling = { 1 },
96c76efa HV	69	.bit_depth = { 16 },
ef834f78 HV	70	.is_yuv = true,
ef834f78 HV	71	.planes = 1,
96c76efa	72	.buffers = 1,
ef834f78 HV	73	},
	74	{
	75	.name = "4:2:2, packed, VYUY",
	76	.fourcc = V4L2_PIX_FMT_VYUY,
96c76efa HV	77	.vdownsampling = { 1 },
96c76efa HV	78	.bit_depth = { 16 },
ef834f78 HV	79	.is_yuv = true,
ef834f78 HV	80	.planes = 1,
96c76efa	81	.buffers = 1,
ef834f78 HV	82	},
	83	{
	84	.name = "RGB565 (LE)",
	85	.fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
96c76efa HV	86	.vdownsampling = { 1 },
96c76efa HV	87	.bit_depth = { 16 },
ef834f78	88	.planes = 1,
96c76efa	89	.buffers = 1,
ef834f78 HV	90	.can_do_overlay = true,
	91	},
	92	{
	93	.name = "RGB565 (BE)",
	94	.fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
96c76efa HV	95	.vdownsampling = { 1 },
96c76efa HV	96	.bit_depth = { 16 },
ef834f78	97	.planes = 1,
96c76efa	98	.buffers = 1,
ef834f78 HV	99	.can_do_overlay = true,
	100	},
	101	{
	102	.name = "RGB555 (LE)",
	103	.fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
96c76efa HV	104	.vdownsampling = { 1 },
96c76efa HV	105	.bit_depth = { 16 },
ef834f78	106	.planes = 1,
96c76efa	107	.buffers = 1,
ef834f78 HV	108	.can_do_overlay = true,
	109	},
	110	{
	111	.name = "XRGB555 (LE)",
	112	.fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
96c76efa HV	113	.vdownsampling = { 1 },
96c76efa HV	114	.bit_depth = { 16 },
ef834f78	115	.planes = 1,
96c76efa	116	.buffers = 1,
ef834f78 HV	117	.can_do_overlay = true,
	118	},
	119	{
	120	.name = "ARGB555 (LE)",
	121	.fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
96c76efa HV	122	.vdownsampling = { 1 },
96c76efa HV	123	.bit_depth = { 16 },
ef834f78	124	.planes = 1,
96c76efa	125	.buffers = 1,
ef834f78 HV	126	.can_do_overlay = true,
	127	.alpha_mask = 0x8000,
	128	},
	129	{
	130	.name = "RGB555 (BE)",
	131	.fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
96c76efa HV	132	.vdownsampling = { 1 },
96c76efa HV	133	.bit_depth = { 16 },
ef834f78	134	.planes = 1,
96c76efa	135	.buffers = 1,
ef834f78 HV	136	.can_do_overlay = true,
	137	},
	138	{
	139	.name = "RGB24 (LE)",
	140	.fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
96c76efa HV	141	.vdownsampling = { 1 },
96c76efa HV	142	.bit_depth = { 24 },
ef834f78	143	.planes = 1,
96c76efa	144	.buffers = 1,
ef834f78 HV	145	},
	146	{
	147	.name = "RGB24 (BE)",
	148	.fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
96c76efa HV	149	.vdownsampling = { 1 },
96c76efa HV	150	.bit_depth = { 24 },
ef834f78	151	.planes = 1,
96c76efa	152	.buffers = 1,
ef834f78 HV	153	},
	154	{
	155	.name = "RGB32 (LE)",
	156	.fourcc = V4L2_PIX_FMT_RGB32, /* argb */
96c76efa HV	157	.vdownsampling = { 1 },
96c76efa HV	158	.bit_depth = { 32 },
ef834f78	159	.planes = 1,
96c76efa	160	.buffers = 1,
ef834f78 HV	161	},
	162	{
	163	.name = "RGB32 (BE)",
	164	.fourcc = V4L2_PIX_FMT_BGR32, /* bgra */
96c76efa HV	165	.vdownsampling = { 1 },
96c76efa HV	166	.bit_depth = { 32 },
ef834f78	167	.planes = 1,
96c76efa	168	.buffers = 1,
ef834f78 HV	169	},
	170	{
	171	.name = "XRGB32 (LE)",
	172	.fourcc = V4L2_PIX_FMT_XRGB32, /* argb */
96c76efa HV	173	.vdownsampling = { 1 },
96c76efa HV	174	.bit_depth = { 32 },
ef834f78	175	.planes = 1,
96c76efa	176	.buffers = 1,
ef834f78 HV	177	},
	178	{
	179	.name = "XRGB32 (BE)",
	180	.fourcc = V4L2_PIX_FMT_XBGR32, /* bgra */
96c76efa HV	181	.vdownsampling = { 1 },
96c76efa HV	182	.bit_depth = { 32 },
ef834f78	183	.planes = 1,
96c76efa	184	.buffers = 1,
ef834f78 HV	185	},
	186	{
	187	.name = "ARGB32 (LE)",
	188	.fourcc = V4L2_PIX_FMT_ARGB32, /* argb */
96c76efa HV	189	.vdownsampling = { 1 },
96c76efa HV	190	.bit_depth = { 32 },
ef834f78	191	.planes = 1,
96c76efa	192	.buffers = 1,
ef834f78 HV	193	.alpha_mask = 0x000000ff,
	194	},
	195	{
	196	.name = "ARGB32 (BE)",
	197	.fourcc = V4L2_PIX_FMT_ABGR32, /* bgra */
96c76efa HV	198	.vdownsampling = { 1 },
96c76efa HV	199	.bit_depth = { 32 },
ef834f78	200	.planes = 1,
96c76efa	201	.buffers = 1,
ef834f78 HV	202	.alpha_mask = 0xff000000,
	203	},
	204	{
96c76efa	205	.name = "4:2:2, biplanar, YUV",
ef834f78	206	.fourcc = V4L2_PIX_FMT_NV16M,
96c76efa HV	207	.vdownsampling = { 1, 1 },
96c76efa HV	208	.bit_depth = { 8, 8 },
ef834f78 HV	209	.is_yuv = true,
ef834f78 HV	210	.planes = 2,
96c76efa	211	.buffers = 2,
ef834f78 HV	212	.data_offset = { PLANE0_DATA_OFFSET, 0 },
	213	},
	214	{
96c76efa	215	.name = "4:2:2, biplanar, YVU",
ef834f78	216	.fourcc = V4L2_PIX_FMT_NV61M,
96c76efa HV	217	.vdownsampling = { 1, 1 },
96c76efa HV	218	.bit_depth = { 8, 8 },
ef834f78 HV	219	.is_yuv = true,
ef834f78 HV	220	.planes = 2,
96c76efa	221	.buffers = 2,
ef834f78 HV	222	.data_offset = { 0, PLANE0_DATA_OFFSET },
	223	},
	224	};
	225
	226	/* There are 2 multiplanar formats in the list */
	227	#define VIVID_MPLANAR_FORMATS 2
	228
1fc78bc9	229	const struct vivid_fmt vivid_get_format(struct vivid_dev dev, u32 pixelformat)
ef834f78 HV	230	{
	231	const struct vivid_fmt *fmt;
	232	unsigned k;
	233
	234	for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
	235	fmt = &vivid_formats[k];
	236	if (fmt->fourcc == pixelformat)
	237	if (fmt->planes == 1 \|\| dev->multiplanar)
	238	return fmt;
	239	}
	240
	241	return NULL;
	242	}
	243
	244	bool vivid_vid_can_loop(struct vivid_dev *dev)
	245	{
	246	if (dev->src_rect.width != dev->sink_rect.width \|\|
	247	dev->src_rect.height != dev->sink_rect.height)
	248	return false;
	249	if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
	250	return false;
	251	if (dev->field_cap != dev->field_out)
	252	return false;
ba24b442 HV	253	/*
	254	* While this can be supported, it is just too much work
	255	* to actually implement.
	256	*/
	257	if (dev->field_cap == V4L2_FIELD_SEQ_TB \|\|
	258	dev->field_cap == V4L2_FIELD_SEQ_BT)
	259	return false;
ef834f78 HV	260	if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
	261	if (!(dev->std_cap & V4L2_STD_525_60) !=
	262	!(dev->std_out & V4L2_STD_525_60))
	263	return false;
	264	return true;
	265	}
	266	if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
	267	return true;
	268	return false;
	269	}
	270
	271	void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
	272	{
	273	struct v4l2_event ev = {
	274	.type = V4L2_EVENT_SOURCE_CHANGE,
	275	.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
	276	};
	277	unsigned i;
	278
	279	for (i = 0; i < dev->num_inputs; i++) {
	280	ev.id = i;
	281	if (dev->input_type[i] == type) {
	282	if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
	283	v4l2_event_queue(&dev->vid_cap_dev, &ev);
	284	if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
	285	v4l2_event_queue(&dev->vbi_cap_dev, &ev);
	286	}
	287	}
	288	}
	289
	290	/*
	291	* Conversion function that converts a single-planar format to a
	292	* single-plane multiplanar format.
	293	*/
	294	void fmt_sp2mp(const struct v4l2_format sp_fmt, struct v4l2_format mp_fmt)
	295	{
	296	struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
	297	struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
	298	const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
	299	bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
	300
	301	memset(mp->reserved, 0, sizeof(mp->reserved));
	302	mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
	303	V4L2_CAP_VIDEO_CAPTURE_MPLANE;
	304	mp->width = pix->width;
	305	mp->height = pix->height;
	306	mp->pixelformat = pix->pixelformat;
	307	mp->field = pix->field;
	308	mp->colorspace = pix->colorspace;
3e8a78d1 HV	309	mp->ycbcr_enc = pix->ycbcr_enc;
3e8a78d1 HV	310	mp->quantization = pix->quantization;
ef834f78 HV	311	mp->num_planes = 1;
	312	mp->flags = pix->flags;
	313	ppix->sizeimage = pix->sizeimage;
	314	ppix->bytesperline = pix->bytesperline;
	315	memset(ppix->reserved, 0, sizeof(ppix->reserved));
	316	}
	317
	318	int fmt_sp2mp_func(struct file file, void priv,
	319	struct v4l2_format *f, fmtfunc func)
	320	{
	321	struct v4l2_format fmt;
	322	struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
	323	struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
	324	struct v4l2_pix_format *pix = &f->fmt.pix;
	325	int ret;
	326
	327	/* Converts to a mplane format */
	328	fmt_sp2mp(f, &fmt);
	329	/* Passes it to the generic mplane format function */
	330	ret = func(file, priv, &fmt);
	331	/* Copies back the mplane data to the single plane format */
	332	pix->width = mp->width;
	333	pix->height = mp->height;
	334	pix->pixelformat = mp->pixelformat;
	335	pix->field = mp->field;
	336	pix->colorspace = mp->colorspace;
3e8a78d1 HV	337	pix->ycbcr_enc = mp->ycbcr_enc;
3e8a78d1 HV	338	pix->quantization = mp->quantization;
ef834f78 HV	339	pix->sizeimage = ppix->sizeimage;
	340	pix->bytesperline = ppix->bytesperline;
	341	pix->flags = mp->flags;
	342	return ret;
	343	}
	344
	345	/* v4l2_rect helper function: copy the width/height values */
	346	void rect_set_size_to(struct v4l2_rect r, const struct v4l2_rect size)
	347	{
	348	r->width = size->width;
	349	r->height = size->height;
	350	}
	351
	352	/* v4l2_rect helper function: width and height of r should be >= min_size */
	353	void rect_set_min_size(struct v4l2_rect r, const struct v4l2_rect min_size)
	354	{
	355	if (r->width < min_size->width)
	356	r->width = min_size->width;
	357	if (r->height < min_size->height)
	358	r->height = min_size->height;
	359	}
	360
	361	/* v4l2_rect helper function: width and height of r should be <= max_size */
	362	void rect_set_max_size(struct v4l2_rect r, const struct v4l2_rect max_size)
	363	{
	364	if (r->width > max_size->width)
	365	r->width = max_size->width;
	366	if (r->height > max_size->height)
	367	r->height = max_size->height;
	368	}
	369
	370	/* v4l2_rect helper function: r should be inside boundary */
	371	void rect_map_inside(struct v4l2_rect r, const struct v4l2_rect boundary)
	372	{
	373	rect_set_max_size(r, boundary);
	374	if (r->left < boundary->left)
	375	r->left = boundary->left;
	376	if (r->top < boundary->top)
	377	r->top = boundary->top;
	378	if (r->left + r->width > boundary->width)
	379	r->left = boundary->width - r->width;
	380	if (r->top + r->height > boundary->height)
	381	r->top = boundary->height - r->height;
	382	}
	383
	384	/* v4l2_rect helper function: return true if r1 has the same size as r2 */
	385	bool rect_same_size(const struct v4l2_rect r1, const struct v4l2_rect r2)
	386	{
	387	return r1->width == r2->width && r1->height == r2->height;
	388	}
	389
	390	/* v4l2_rect helper function: calculate the intersection of two rects */
	391	struct v4l2_rect rect_intersect(const struct v4l2_rect a, const struct v4l2_rect b)
	392	{
	393	struct v4l2_rect r;
	394	int right, bottom;
	395
	396	r.top = max(a->top, b->top);
	397	r.left = max(a->left, b->left);
	398	bottom = min(a->top + a->height, b->top + b->height);
	399	right = min(a->left + a->width, b->left + b->width);
	400	r.height = max(0, bottom - r.top);
	401	r.width = max(0, right - r.left);
	402	return r;
403	}
404
405	/*
406	* v4l2_rect helper function: scale rect r by to->width / from->width and
407	* to->height / from->height.
408	*/
409	void rect_scale(struct v4l2_rect r, const struct v4l2_rect from,
410	const struct v4l2_rect *to)
411	{
412	if (from->width == 0 \|\| from->height == 0) {
413	r->left = r->top = r->width = r->height = 0;
414	return;
415	}
416	r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
417	r->width = ((r->width * to->width) / from->width) & ~1;
418	r->top = ((r->top - from->top) * to->height) / from->height;
419	r->height = (r->height * to->height) / from->height;
420	}
421
422	bool rect_overlap(const struct v4l2_rect r1, const struct v4l2_rect r2)
423	{
424	/*
425	* IF the left side of r1 is to the right of the right side of r2 OR
426	* the left side of r2 is to the right of the right side of r1 THEN
427	* they do not overlap.
428	*/
429	if (r1->left >= r2->left + r2->width \|\|
430	r2->left >= r1->left + r1->width)
431	return false;
432	/*
433	* IF the top side of r1 is below the bottom of r2 OR
434	* the top side of r2 is below the bottom of r1 THEN
435	* they do not overlap.
436	*/
437	if (r1->top >= r2->top + r2->height \|\|
438	r2->top >= r1->top + r1->height)
439	return false;
440	return true;
441	}
442	int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
443	{
444	unsigned w = r->width;
445	unsigned h = r->height;
446
447	if (!(flags & V4L2_SEL_FLAG_LE)) {
448	w++;
449	h++;
450	if (w < 2)
451	w = 2;
452	if (h < 2)
453	h = 2;
454	}
455	if (!(flags & V4L2_SEL_FLAG_GE)) {
456	if (w > MAX_WIDTH)
457	w = MAX_WIDTH;
458	if (h > MAX_HEIGHT)
459	h = MAX_HEIGHT;
460	}
461	w = w & ~1;
462	h = h & ~1;
463	if (w < 2 \|\| h < 2)
464	return -ERANGE;
465	if (w > MAX_WIDTH \|\| h > MAX_HEIGHT)
466	return -ERANGE;
467	if (r->top < 0)
468	r->top = 0;
469	if (r->left < 0)
470	r->left = 0;
471	r->left &= ~1;
472	r->top &= ~1;
473	if (r->left + w > MAX_WIDTH)
474	r->left = MAX_WIDTH - w;
475	if (r->top + h > MAX_HEIGHT)
476	r->top = MAX_HEIGHT - h;
477	if ((flags & (V4L2_SEL_FLAG_GE \| V4L2_SEL_FLAG_LE)) ==
478	(V4L2_SEL_FLAG_GE \| V4L2_SEL_FLAG_LE) &&
479	(r->width != w \|\| r->height != h))
480	return -ERANGE;
481	r->width = w;
482	r->height = h;
483	return 0;
484	}
485
486	int vivid_enum_fmt_vid(struct file file, void priv,
487	struct v4l2_fmtdesc *f)
488	{
489	struct vivid_dev *dev = video_drvdata(file);
490	const struct vivid_fmt *fmt;
491
492	if (f->index >= ARRAY_SIZE(vivid_formats) -
493	(dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
494	return -EINVAL;
495
496	fmt = &vivid_formats[f->index];
497
498	strlcpy(f->description, fmt->name, sizeof(f->description));
499	f->pixelformat = fmt->fourcc;
500	return 0;
501	}
502
503	int vidioc_enum_fmt_vid_mplane(struct file file, void priv,
504	struct v4l2_fmtdesc *f)
505	{
506	struct vivid_dev *dev = video_drvdata(file);
507
508	if (!dev->multiplanar)
509	return -ENOTTY;
510	return vivid_enum_fmt_vid(file, priv, f);
511	}
512
513	int vidioc_enum_fmt_vid(struct file file, void priv,
514	struct v4l2_fmtdesc *f)
515	{
516	struct vivid_dev *dev = video_drvdata(file);
517
518	if (dev->multiplanar)
519	return -ENOTTY;
520	return vivid_enum_fmt_vid(file, priv, f);
521	}
522
523	int vidioc_g_std(struct file file, void priv, v4l2_std_id *id)
524	{
525	struct vivid_dev *dev = video_drvdata(file);
526	struct video_device *vdev = video_devdata(file);
527
528	if (vdev->vfl_dir == VFL_DIR_RX) {
529	if (!vivid_is_sdtv_cap(dev))
530	return -ENODATA;
531	*id = dev->std_cap;
532	} else {
533	if (!vivid_is_svid_out(dev))
534	return -ENODATA;
535	*id = dev->std_out;
536	}
537	return 0;
538	}
539
540	int vidioc_g_dv_timings(struct file file, void _fh,
541	struct v4l2_dv_timings *timings)
542	{
543	struct vivid_dev *dev = video_drvdata(file);
544	struct video_device *vdev = video_devdata(file);
545
546	if (vdev->vfl_dir == VFL_DIR_RX) {
547	if (!vivid_is_hdmi_cap(dev))
548	return -ENODATA;
549	*timings = dev->dv_timings_cap;
550	} else {
551	if (!vivid_is_hdmi_out(dev))
552	return -ENODATA;
553	*timings = dev->dv_timings_out;
554	}
555	return 0;
556	}
557
558	int vidioc_enum_dv_timings(struct file file, void _fh,
559	struct v4l2_enum_dv_timings *timings)
560	{
561	struct vivid_dev *dev = video_drvdata(file);
562	struct video_device *vdev = video_devdata(file);
563
564	if (vdev->vfl_dir == VFL_DIR_RX) {
565	if (!vivid_is_hdmi_cap(dev))
566	return -ENODATA;
567	} else {
568	if (!vivid_is_hdmi_out(dev))
569	return -ENODATA;
570	}
571	return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
572	NULL, NULL);
573	}
574
575	int vidioc_dv_timings_cap(struct file file, void _fh,
576	struct v4l2_dv_timings_cap *cap)
577	{
578	struct vivid_dev *dev = video_drvdata(file);
579	struct video_device *vdev = video_devdata(file);
580
581	if (vdev->vfl_dir == VFL_DIR_RX) {
582	if (!vivid_is_hdmi_cap(dev))
583	return -ENODATA;
584	} else {
585	if (!vivid_is_hdmi_out(dev))
586	return -ENODATA;
587	}
588	*cap = vivid_dv_timings_cap;
589	return 0;
590	}
591
592	int vidioc_g_edid(struct file file, void _fh,
593	struct v4l2_edid *edid)
594	{
595	struct vivid_dev *dev = video_drvdata(file);
596	struct video_device *vdev = video_devdata(file);
597
598	memset(edid->reserved, 0, sizeof(edid->reserved));
599	if (vdev->vfl_dir == VFL_DIR_RX) {
600	if (edid->pad >= dev->num_inputs)
601	return -EINVAL;
602	if (dev->input_type[edid->pad] != HDMI)
603	return -EINVAL;
604	} else {
605	if (edid->pad >= dev->num_outputs)
606	return -EINVAL;
607	if (dev->output_type[edid->pad] != HDMI)
608	return -EINVAL;
609	}
610	if (edid->start_block == 0 && edid->blocks == 0) {
611	edid->blocks = dev->edid_blocks;
612	return 0;
613	}
614	if (dev->edid_blocks == 0)
615	return -ENODATA;
616	if (edid->start_block >= dev->edid_blocks)
617	return -EINVAL;
618	if (edid->start_block + edid->blocks > dev->edid_blocks)
619	edid->blocks = dev->edid_blocks - edid->start_block;
620	memcpy(edid->edid, dev->edid, edid->blocks * 128);
621	return 0;
622	}