[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,
		.depth    = 16,
		.is_yuv   = true,
		.planes   = 1,
		.data_offset = { PLANE0_DATA_OFFSET, 0 },
	},
	{
		.name     = "4:2:2, packed, UYVY",
		.fourcc   = V4L2_PIX_FMT_UYVY,
		.depth    = 16,
		.is_yuv   = true,
		.planes   = 1,
	},
	{
		.name     = "4:2:2, packed, YVYU",
		.fourcc   = V4L2_PIX_FMT_YVYU,
		.depth    = 16,
		.is_yuv   = true,
		.planes   = 1,
	},
	{
		.name     = "4:2:2, packed, VYUY",
		.fourcc   = V4L2_PIX_FMT_VYUY,
		.depth    = 16,
		.is_yuv   = true,
		.planes   = 1,
	},
	{
		.name     = "RGB565 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
		.depth    = 16,
		.planes   = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "RGB565 (BE)",
		.fourcc   = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
		.depth    = 16,
		.planes   = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "RGB555 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
		.depth    = 16,
		.planes   = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "XRGB555 (LE)",
		.fourcc   = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
		.depth    = 16,
		.planes   = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "ARGB555 (LE)",
		.fourcc   = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
		.depth    = 16,
		.planes   = 1,
		.can_do_overlay = true,
		.alpha_mask = 0x8000,
	},
	{
		.name     = "RGB555 (BE)",
		.fourcc   = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
		.depth    = 16,
		.planes   = 1,
		.can_do_overlay = true,
	},
	{
		.name     = "RGB24 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB24, /* rgb */
		.depth    = 24,
		.planes   = 1,
	},
	{
		.name     = "RGB24 (BE)",
		.fourcc   = V4L2_PIX_FMT_BGR24, /* bgr */
		.depth    = 24,
		.planes   = 1,
	},
	{
		.name     = "RGB32 (LE)",
		.fourcc   = V4L2_PIX_FMT_RGB32, /* argb */
		.depth    = 32,
		.planes   = 1,
	},
	{
		.name     = "RGB32 (BE)",
		.fourcc   = V4L2_PIX_FMT_BGR32, /* bgra */
		.depth    = 32,
		.planes   = 1,
	},
	{
		.name     = "XRGB32 (LE)",
		.fourcc   = V4L2_PIX_FMT_XRGB32, /* argb */
		.depth    = 32,
		.planes   = 1,
	},
	{
		.name     = "XRGB32 (BE)",
		.fourcc   = V4L2_PIX_FMT_XBGR32, /* bgra */
		.depth    = 32,
		.planes   = 1,
	},
	{
		.name     = "ARGB32 (LE)",
		.fourcc   = V4L2_PIX_FMT_ARGB32, /* argb */
		.depth    = 32,
		.planes   = 1,
		.alpha_mask = 0x000000ff,
	},
	{
		.name     = "ARGB32 (BE)",
		.fourcc   = V4L2_PIX_FMT_ABGR32, /* bgra */
		.depth    = 32,
		.planes   = 1,
		.alpha_mask = 0xff000000,
	},
	{
		.name     = "4:2:2, planar, YUV",
		.fourcc   = V4L2_PIX_FMT_NV16M,
		.depth    = 8,
		.is_yuv   = true,
		.planes   = 2,
		.data_offset = { PLANE0_DATA_OFFSET, 0 },
	},
	{
		.name     = "4:2:2, planar, YVU",
		.fourcc   = V4L2_PIX_FMT_NV61M,
		.depth    = 8,
		.is_yuv   = true,
		.planes   = 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;
	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,
	49	.depth = 16,
	50	.is_yuv = true,
	51	.planes = 1,
	52	.data_offset = { PLANE0_DATA_OFFSET, 0 },
	53	},
	54	{
	55	.name = "4:2:2, packed, UYVY",
	56	.fourcc = V4L2_PIX_FMT_UYVY,
	57	.depth = 16,
	58	.is_yuv = true,
	59	.planes = 1,
	60	},
	61	{
	62	.name = "4:2:2, packed, YVYU",
	63	.fourcc = V4L2_PIX_FMT_YVYU,
	64	.depth = 16,
65	.is_yuv = true,
66	.planes = 1,
67	},
68	{
69	.name = "4:2:2, packed, VYUY",
70	.fourcc = V4L2_PIX_FMT_VYUY,
71	.depth = 16,
72	.is_yuv = true,
73	.planes = 1,
74	},
75	{
76	.name = "RGB565 (LE)",
77	.fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
78	.depth = 16,
79	.planes = 1,
80	.can_do_overlay = true,
81	},
82	{
83	.name = "RGB565 (BE)",
84	.fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
85	.depth = 16,
86	.planes = 1,
87	.can_do_overlay = true,
88	},
89	{
90	.name = "RGB555 (LE)",
91	.fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
92	.depth = 16,
93	.planes = 1,
94	.can_do_overlay = true,
95	},
96	{
97	.name = "XRGB555 (LE)",
98	.fourcc = V4L2_PIX_FMT_XRGB555, /* gggbbbbb arrrrrgg */
99	.depth = 16,
100	.planes = 1,
101	.can_do_overlay = true,
102	},
103	{
104	.name = "ARGB555 (LE)",
105	.fourcc = V4L2_PIX_FMT_ARGB555, /* gggbbbbb arrrrrgg */
106	.depth = 16,
107	.planes = 1,
108	.can_do_overlay = true,
109	.alpha_mask = 0x8000,
110	},
111	{
112	.name = "RGB555 (BE)",
113	.fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
114	.depth = 16,
115	.planes = 1,
116	.can_do_overlay = true,
117	},
118	{
119	.name = "RGB24 (LE)",
120	.fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
121	.depth = 24,
122	.planes = 1,
123	},
124	{
125	.name = "RGB24 (BE)",
126	.fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
127	.depth = 24,
128	.planes = 1,
129	},
130	{
131	.name = "RGB32 (LE)",
132	.fourcc = V4L2_PIX_FMT_RGB32, /* argb */
133	.depth = 32,
134	.planes = 1,
135	},
136	{
137	.name = "RGB32 (BE)",
138	.fourcc = V4L2_PIX_FMT_BGR32, /* bgra */
139	.depth = 32,
140	.planes = 1,
141	},
142	{
143	.name = "XRGB32 (LE)",
144	.fourcc = V4L2_PIX_FMT_XRGB32, /* argb */
145	.depth = 32,
146	.planes = 1,
147	},
148	{
149	.name = "XRGB32 (BE)",
150	.fourcc = V4L2_PIX_FMT_XBGR32, /* bgra */
151	.depth = 32,
152	.planes = 1,
153	},
154	{
155	.name = "ARGB32 (LE)",
156	.fourcc = V4L2_PIX_FMT_ARGB32, /* argb */
157	.depth = 32,
158	.planes = 1,
159	.alpha_mask = 0x000000ff,
160	},
161	{
162	.name = "ARGB32 (BE)",
163	.fourcc = V4L2_PIX_FMT_ABGR32, /* bgra */
164	.depth = 32,
165	.planes = 1,
166	.alpha_mask = 0xff000000,
167	},
168	{
169	.name = "4:2:2, planar, YUV",
170	.fourcc = V4L2_PIX_FMT_NV16M,
171	.depth = 8,
172	.is_yuv = true,
173	.planes = 2,
174	.data_offset = { PLANE0_DATA_OFFSET, 0 },
175	},
176	{
177	.name = "4:2:2, planar, YVU",
178	.fourcc = V4L2_PIX_FMT_NV61M,
179	.depth = 8,
180	.is_yuv = true,
181	.planes = 2,
182	.data_offset = { 0, PLANE0_DATA_OFFSET },
183	},
184	};
185
186	/* There are 2 multiplanar formats in the list */
187	#define VIVID_MPLANAR_FORMATS 2
188
1fc78bc9	189	const struct vivid_fmt vivid_get_format(struct vivid_dev dev, u32 pixelformat)
ef834f78 HV	190	{
	191	const struct vivid_fmt *fmt;
	192	unsigned k;
	193
	194	for (k = 0; k < ARRAY_SIZE(vivid_formats); k++) {
	195	fmt = &vivid_formats[k];
	196	if (fmt->fourcc == pixelformat)
	197	if (fmt->planes == 1 \|\| dev->multiplanar)
	198	return fmt;
	199	}
	200
	201	return NULL;
	202	}
	203
	204	bool vivid_vid_can_loop(struct vivid_dev *dev)
	205	{
	206	if (dev->src_rect.width != dev->sink_rect.width \|\|
	207	dev->src_rect.height != dev->sink_rect.height)
	208	return false;
	209	if (dev->fmt_cap->fourcc != dev->fmt_out->fourcc)
	210	return false;
	211	if (dev->field_cap != dev->field_out)
	212	return false;
	213	if (vivid_is_svid_cap(dev) && vivid_is_svid_out(dev)) {
	214	if (!(dev->std_cap & V4L2_STD_525_60) !=
	215	!(dev->std_out & V4L2_STD_525_60))
	216	return false;
	217	return true;
	218	}
	219	if (vivid_is_hdmi_cap(dev) && vivid_is_hdmi_out(dev))
	220	return true;
	221	return false;
	222	}
	223
	224	void vivid_send_source_change(struct vivid_dev *dev, unsigned type)
	225	{
	226	struct v4l2_event ev = {
	227	.type = V4L2_EVENT_SOURCE_CHANGE,
	228	.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
	229	};
	230	unsigned i;
	231
	232	for (i = 0; i < dev->num_inputs; i++) {
	233	ev.id = i;
	234	if (dev->input_type[i] == type) {
	235	if (video_is_registered(&dev->vid_cap_dev) && dev->has_vid_cap)
	236	v4l2_event_queue(&dev->vid_cap_dev, &ev);
	237	if (video_is_registered(&dev->vbi_cap_dev) && dev->has_vbi_cap)
	238	v4l2_event_queue(&dev->vbi_cap_dev, &ev);
	239	}
	240	}
	241	}
	242
	243	/*
	244	* Conversion function that converts a single-planar format to a
	245	* single-plane multiplanar format.
	246	*/
	247	void fmt_sp2mp(const struct v4l2_format sp_fmt, struct v4l2_format mp_fmt)
	248	{
	249	struct v4l2_pix_format_mplane *mp = &mp_fmt->fmt.pix_mp;
	250	struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
	251	const struct v4l2_pix_format *pix = &sp_fmt->fmt.pix;
	252	bool is_out = sp_fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
	253
254	memset(mp->reserved, 0, sizeof(mp->reserved));
255	mp_fmt->type = is_out ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
256	V4L2_CAP_VIDEO_CAPTURE_MPLANE;
257	mp->width = pix->width;
258	mp->height = pix->height;
259	mp->pixelformat = pix->pixelformat;
260	mp->field = pix->field;
261	mp->colorspace = pix->colorspace;
3e8a78d1 HV	262	mp->ycbcr_enc = pix->ycbcr_enc;
3e8a78d1 HV	263	mp->quantization = pix->quantization;
ef834f78 HV	264	mp->num_planes = 1;
	265	mp->flags = pix->flags;
	266	ppix->sizeimage = pix->sizeimage;
	267	ppix->bytesperline = pix->bytesperline;
	268	memset(ppix->reserved, 0, sizeof(ppix->reserved));
	269	}
	270
	271	int fmt_sp2mp_func(struct file file, void priv,
	272	struct v4l2_format *f, fmtfunc func)
	273	{
	274	struct v4l2_format fmt;
	275	struct v4l2_pix_format_mplane *mp = &fmt.fmt.pix_mp;
	276	struct v4l2_plane_pix_format *ppix = &mp->plane_fmt[0];
	277	struct v4l2_pix_format *pix = &f->fmt.pix;
	278	int ret;
	279
	280	/* Converts to a mplane format */
	281	fmt_sp2mp(f, &fmt);
	282	/* Passes it to the generic mplane format function */
	283	ret = func(file, priv, &fmt);
	284	/* Copies back the mplane data to the single plane format */
	285	pix->width = mp->width;
	286	pix->height = mp->height;
	287	pix->pixelformat = mp->pixelformat;
	288	pix->field = mp->field;
	289	pix->colorspace = mp->colorspace;
3e8a78d1 HV	290	pix->ycbcr_enc = mp->ycbcr_enc;
3e8a78d1 HV	291	pix->quantization = mp->quantization;
ef834f78 HV	292	pix->sizeimage = ppix->sizeimage;
	293	pix->bytesperline = ppix->bytesperline;
	294	pix->flags = mp->flags;
	295	return ret;
	296	}
	297
	298	/* v4l2_rect helper function: copy the width/height values */
	299	void rect_set_size_to(struct v4l2_rect r, const struct v4l2_rect size)
	300	{
	301	r->width = size->width;
	302	r->height = size->height;
	303	}
	304
	305	/* v4l2_rect helper function: width and height of r should be >= min_size */
	306	void rect_set_min_size(struct v4l2_rect r, const struct v4l2_rect min_size)
	307	{
	308	if (r->width < min_size->width)
	309	r->width = min_size->width;
	310	if (r->height < min_size->height)
	311	r->height = min_size->height;
	312	}
	313
	314	/* v4l2_rect helper function: width and height of r should be <= max_size */
	315	void rect_set_max_size(struct v4l2_rect r, const struct v4l2_rect max_size)
	316	{
	317	if (r->width > max_size->width)
	318	r->width = max_size->width;
	319	if (r->height > max_size->height)
	320	r->height = max_size->height;
	321	}
	322
	323	/* v4l2_rect helper function: r should be inside boundary */
	324	void rect_map_inside(struct v4l2_rect r, const struct v4l2_rect boundary)
	325	{
	326	rect_set_max_size(r, boundary);
	327	if (r->left < boundary->left)
	328	r->left = boundary->left;
	329	if (r->top < boundary->top)
	330	r->top = boundary->top;
	331	if (r->left + r->width > boundary->width)
	332	r->left = boundary->width - r->width;
	333	if (r->top + r->height > boundary->height)
	334	r->top = boundary->height - r->height;
	335	}
	336
	337	/* v4l2_rect helper function: return true if r1 has the same size as r2 */
	338	bool rect_same_size(const struct v4l2_rect r1, const struct v4l2_rect r2)
	339	{
	340	return r1->width == r2->width && r1->height == r2->height;
	341	}
	342
	343	/* v4l2_rect helper function: calculate the intersection of two rects */
	344	struct v4l2_rect rect_intersect(const struct v4l2_rect a, const struct v4l2_rect b)
	345	{
	346	struct v4l2_rect r;
	347	int right, bottom;
	348
	349	r.top = max(a->top, b->top);
	350	r.left = max(a->left, b->left);
	351	bottom = min(a->top + a->height, b->top + b->height);
	352	right = min(a->left + a->width, b->left + b->width);
	353	r.height = max(0, bottom - r.top);
	354	r.width = max(0, right - r.left);
	355	return r;
356	}
357
358	/*
359	* v4l2_rect helper function: scale rect r by to->width / from->width and
360	* to->height / from->height.
361	*/
362	void rect_scale(struct v4l2_rect r, const struct v4l2_rect from,
363	const struct v4l2_rect *to)
364	{
365	if (from->width == 0 \|\| from->height == 0) {
366	r->left = r->top = r->width = r->height = 0;
367	return;
368	}
369	r->left = (((r->left - from->left) * to->width) / from->width) & ~1;
370	r->width = ((r->width * to->width) / from->width) & ~1;
371	r->top = ((r->top - from->top) * to->height) / from->height;
372	r->height = (r->height * to->height) / from->height;
373	}
374
375	bool rect_overlap(const struct v4l2_rect r1, const struct v4l2_rect r2)
376	{
377	/*
378	* IF the left side of r1 is to the right of the right side of r2 OR
379	* the left side of r2 is to the right of the right side of r1 THEN
380	* they do not overlap.
381	*/
382	if (r1->left >= r2->left + r2->width \|\|
383	r2->left >= r1->left + r1->width)
384	return false;
385	/*
386	* IF the top side of r1 is below the bottom of r2 OR
387	* the top side of r2 is below the bottom of r1 THEN
388	* they do not overlap.
389	*/
390	if (r1->top >= r2->top + r2->height \|\|
391	r2->top >= r1->top + r1->height)
392	return false;
393	return true;
394	}
395	int vivid_vid_adjust_sel(unsigned flags, struct v4l2_rect *r)
396	{
397	unsigned w = r->width;
398	unsigned h = r->height;
399
400	if (!(flags & V4L2_SEL_FLAG_LE)) {
401	w++;
402	h++;
403	if (w < 2)
404	w = 2;
405	if (h < 2)
406	h = 2;
407	}
408	if (!(flags & V4L2_SEL_FLAG_GE)) {
409	if (w > MAX_WIDTH)
410	w = MAX_WIDTH;
411	if (h > MAX_HEIGHT)
412	h = MAX_HEIGHT;
413	}
414	w = w & ~1;
415	h = h & ~1;
416	if (w < 2 \|\| h < 2)
417	return -ERANGE;
418	if (w > MAX_WIDTH \|\| h > MAX_HEIGHT)
419	return -ERANGE;
420	if (r->top < 0)
421	r->top = 0;
422	if (r->left < 0)
423	r->left = 0;
424	r->left &= ~1;
425	r->top &= ~1;
426	if (r->left + w > MAX_WIDTH)
427	r->left = MAX_WIDTH - w;
428	if (r->top + h > MAX_HEIGHT)
429	r->top = MAX_HEIGHT - h;
430	if ((flags & (V4L2_SEL_FLAG_GE \| V4L2_SEL_FLAG_LE)) ==
431	(V4L2_SEL_FLAG_GE \| V4L2_SEL_FLAG_LE) &&
432	(r->width != w \|\| r->height != h))
433	return -ERANGE;
434	r->width = w;
435	r->height = h;
436	return 0;
437	}
438
439	int vivid_enum_fmt_vid(struct file file, void priv,
440	struct v4l2_fmtdesc *f)
441	{
442	struct vivid_dev *dev = video_drvdata(file);
443	const struct vivid_fmt *fmt;
444
445	if (f->index >= ARRAY_SIZE(vivid_formats) -
446	(dev->multiplanar ? 0 : VIVID_MPLANAR_FORMATS))
447	return -EINVAL;
448
449	fmt = &vivid_formats[f->index];
450
451	strlcpy(f->description, fmt->name, sizeof(f->description));
452	f->pixelformat = fmt->fourcc;
453	return 0;
454	}
455
456	int vidioc_enum_fmt_vid_mplane(struct file file, void priv,
457	struct v4l2_fmtdesc *f)
458	{
459	struct vivid_dev *dev = video_drvdata(file);
460
461	if (!dev->multiplanar)
462	return -ENOTTY;
463	return vivid_enum_fmt_vid(file, priv, f);
464	}
465
466	int vidioc_enum_fmt_vid(struct file file, void priv,
467	struct v4l2_fmtdesc *f)
468	{
469	struct vivid_dev *dev = video_drvdata(file);
470
471	if (dev->multiplanar)
472	return -ENOTTY;
473	return vivid_enum_fmt_vid(file, priv, f);
474	}
475
476	int vidioc_g_std(struct file file, void priv, v4l2_std_id *id)
477	{
478	struct vivid_dev *dev = video_drvdata(file);
479	struct video_device *vdev = video_devdata(file);
480
481	if (vdev->vfl_dir == VFL_DIR_RX) {
482	if (!vivid_is_sdtv_cap(dev))
483	return -ENODATA;
484	*id = dev->std_cap;
485	} else {
486	if (!vivid_is_svid_out(dev))
487	return -ENODATA;
488	*id = dev->std_out;
489	}
490	return 0;
491	}
492
493	int vidioc_g_dv_timings(struct file file, void _fh,
494	struct v4l2_dv_timings *timings)
495	{
496	struct vivid_dev *dev = video_drvdata(file);
497	struct video_device *vdev = video_devdata(file);
498
499	if (vdev->vfl_dir == VFL_DIR_RX) {
500	if (!vivid_is_hdmi_cap(dev))
501	return -ENODATA;
502	*timings = dev->dv_timings_cap;
503	} else {
504	if (!vivid_is_hdmi_out(dev))
505	return -ENODATA;
506	*timings = dev->dv_timings_out;
507	}
508	return 0;
509	}
510
511	int vidioc_enum_dv_timings(struct file file, void _fh,
512	struct v4l2_enum_dv_timings *timings)
513	{
514	struct vivid_dev *dev = video_drvdata(file);
515	struct video_device *vdev = video_devdata(file);
516
517	if (vdev->vfl_dir == VFL_DIR_RX) {
518	if (!vivid_is_hdmi_cap(dev))
519	return -ENODATA;
520	} else {
521	if (!vivid_is_hdmi_out(dev))
522	return -ENODATA;
523	}
524	return v4l2_enum_dv_timings_cap(timings, &vivid_dv_timings_cap,
525	NULL, NULL);
526	}
527
528	int vidioc_dv_timings_cap(struct file file, void _fh,
529	struct v4l2_dv_timings_cap *cap)
530	{
531	struct vivid_dev *dev = video_drvdata(file);
532	struct video_device *vdev = video_devdata(file);
533
534	if (vdev->vfl_dir == VFL_DIR_RX) {
535	if (!vivid_is_hdmi_cap(dev))
536	return -ENODATA;
537	} else {
538	if (!vivid_is_hdmi_out(dev))
539	return -ENODATA;
540	}
541	*cap = vivid_dv_timings_cap;
542	return 0;
543	}
544
545	int vidioc_g_edid(struct file file, void _fh,
546	struct v4l2_edid *edid)
547	{
548	struct vivid_dev *dev = video_drvdata(file);
549	struct video_device *vdev = video_devdata(file);
550
551	memset(edid->reserved, 0, sizeof(edid->reserved));
552	if (vdev->vfl_dir == VFL_DIR_RX) {
553	if (edid->pad >= dev->num_inputs)
554	return -EINVAL;
555	if (dev->input_type[edid->pad] != HDMI)
556	return -EINVAL;
557	} else {
558	if (edid->pad >= dev->num_outputs)
559	return -EINVAL;
560	if (dev->output_type[edid->pad] != HDMI)
561	return -EINVAL;
562	}
563	if (edid->start_block == 0 && edid->blocks == 0) {
564	edid->blocks = dev->edid_blocks;
565	return 0;
566	}
567	if (dev->edid_blocks == 0)
568	return -ENODATA;
569	if (edid->start_block >= dev->edid_blocks)
570	return -EINVAL;
571	if (edid->start_block + edid->blocks > dev->edid_blocks)
572	edid->blocks = dev->edid_blocks - edid->start_block;
573	memcpy(edid->edid, dev->edid, edid->blocks * 128);
574	return 0;
575	}