Exemplo n.º 1
0
static int rvin_reset_format(struct rvin_dev *vin)
{
	struct v4l2_subdev_format fmt = {
		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
		.pad = vin->parallel->source_pad,
	};
	int ret;

	ret = v4l2_subdev_call(vin_to_source(vin), pad, get_fmt, NULL, &fmt);
	if (ret)
		return ret;

	v4l2_fill_pix_format(&vin->format, &fmt.format);

	rvin_format_align(vin, &vin->format);

	vin->source.top = 0;
	vin->source.left = 0;
	vin->source.width = vin->format.width;
	vin->source.height = vin->format.height;

	vin->crop = vin->source;
	vin->compose = vin->source;

	return 0;
}

static int rvin_try_format(struct rvin_dev *vin, u32 which,
			   struct v4l2_pix_format *pix,
			   struct v4l2_rect *crop, struct v4l2_rect *compose)
{
	struct v4l2_subdev *sd = vin_to_source(vin);
	struct v4l2_subdev_pad_config *pad_cfg;
	struct v4l2_subdev_format format = {
		.which = which,
		.pad = vin->parallel->source_pad,
	};
	enum v4l2_field field;
	u32 width, height;
	int ret;

	pad_cfg = v4l2_subdev_alloc_pad_config(sd);
	if (pad_cfg == NULL)
		return -ENOMEM;

	if (!rvin_format_from_pixel(pix->pixelformat) ||
	    (vin->info->model == RCAR_M1 &&
	     pix->pixelformat == V4L2_PIX_FMT_XBGR32))
		pix->pixelformat = RVIN_DEFAULT_FORMAT;

	v4l2_fill_mbus_format(&format.format, pix, vin->mbus_code);

	/* Allow the video device to override field and to scale */
	field = pix->field;
	width = pix->width;
	height = pix->height;

	ret = v4l2_subdev_call(sd, pad, set_fmt, pad_cfg, &format);
	if (ret < 0 && ret != -ENOIOCTLCMD)
		goto done;

	v4l2_fill_pix_format(pix, &format.format);

	if (crop) {
		crop->top = 0;
		crop->left = 0;
		crop->width = pix->width;
		crop->height = pix->height;

		/*
		 * If source is ALTERNATE the driver will use the VIN hardware
		 * to INTERLACE it. The crop height then needs to be doubled.
		 */
		if (pix->field == V4L2_FIELD_ALTERNATE)
			crop->height *= 2;
	}

	if (field != V4L2_FIELD_ANY)
		pix->field = field;

	pix->width = width;
	pix->height = height;

	rvin_format_align(vin, pix);

	if (compose) {
		compose->top = 0;
		compose->left = 0;
		compose->width = pix->width;
		compose->height = pix->height;
	}
done:
	v4l2_subdev_free_pad_config(pad_cfg);

	return 0;
}

static int rvin_querycap(struct file *file, void *priv,
			 struct v4l2_capability *cap)
{
	struct rvin_dev *vin = video_drvdata(file);

	strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
	strscpy(cap->card, "R_Car_VIN", sizeof(cap->card));
	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
		 dev_name(vin->dev));
	return 0;
}

static int rvin_try_fmt_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);

	return rvin_try_format(vin, V4L2_SUBDEV_FORMAT_TRY, &f->fmt.pix, NULL,
			       NULL);
}

static int rvin_s_fmt_vid_cap(struct file *file, void *priv,
			      struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_rect crop, compose;
	int ret;

	if (vb2_is_busy(&vin->queue))
		return -EBUSY;

	ret = rvin_try_format(vin, V4L2_SUBDEV_FORMAT_ACTIVE, &f->fmt.pix,
			      &crop, &compose);
	if (ret)
		return ret;

	vin->format = f->fmt.pix;
	vin->crop = crop;
	vin->compose = compose;
	vin->source = crop;

	return 0;
}

static int rvin_g_fmt_vid_cap(struct file *file, void *priv,
			      struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);

	f->fmt.pix = vin->format;

	return 0;
}

static int rvin_enum_fmt_vid_cap(struct file *file, void *priv,
				 struct v4l2_fmtdesc *f)
{
	if (f->index >= ARRAY_SIZE(rvin_formats))
		return -EINVAL;

	f->pixelformat = rvin_formats[f->index].fourcc;

	return 0;
}

static int rvin_g_selection(struct file *file, void *fh,
			    struct v4l2_selection *s)
{
	struct rvin_dev *vin = video_drvdata(file);

	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	switch (s->target) {
	case V4L2_SEL_TGT_CROP_BOUNDS:
	case V4L2_SEL_TGT_CROP_DEFAULT:
		s->r.left = s->r.top = 0;
		s->r.width = vin->source.width;
		s->r.height = vin->source.height;
		break;
	case V4L2_SEL_TGT_CROP:
		s->r = vin->crop;
		break;
	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
		s->r.left = s->r.top = 0;
		s->r.width = vin->format.width;
		s->r.height = vin->format.height;
		break;
	case V4L2_SEL_TGT_COMPOSE:
		s->r = vin->compose;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int rvin_s_selection(struct file *file, void *fh,
			    struct v4l2_selection *s)
{
	struct rvin_dev *vin = video_drvdata(file);
	const struct rvin_video_format *fmt;
	struct v4l2_rect r = s->r;
	struct v4l2_rect max_rect;
	struct v4l2_rect min_rect = {
		.width = 6,
		.height = 2,
	};

	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	v4l2_rect_set_min_size(&r, &min_rect);

	switch (s->target) {
	case V4L2_SEL_TGT_CROP:
		/* Can't crop outside of source input */
		max_rect.top = max_rect.left = 0;
		max_rect.width = vin->source.width;
		max_rect.height = vin->source.height;
		v4l2_rect_map_inside(&r, &max_rect);

		v4l_bound_align_image(&r.width, 6, vin->source.width, 0,
				      &r.height, 2, vin->source.height, 0, 0);

		r.top  = clamp_t(s32, r.top, 0, vin->source.height - r.height);
		r.left = clamp_t(s32, r.left, 0, vin->source.width - r.width);

		vin->crop = s->r = r;

		vin_dbg(vin, "Cropped %dx%d@%d:%d of %dx%d\n",
			r.width, r.height, r.left, r.top,
			vin->source.width, vin->source.height);
		break;
	case V4L2_SEL_TGT_COMPOSE:
		/* Make sure compose rect fits inside output format */
		max_rect.top = max_rect.left = 0;
		max_rect.width = vin->format.width;
		max_rect.height = vin->format.height;
		v4l2_rect_map_inside(&r, &max_rect);

		/*
		 * Composing is done by adding a offset to the buffer address,
		 * the HW wants this address to be aligned to HW_BUFFER_MASK.
		 * Make sure the top and left values meets this requirement.
		 */
		while ((r.top * vin->format.bytesperline) & HW_BUFFER_MASK)
			r.top--;

		fmt = rvin_format_from_pixel(vin->format.pixelformat);
		while ((r.left * fmt->bpp) & HW_BUFFER_MASK)
			r.left--;

		vin->compose = s->r = r;

		vin_dbg(vin, "Compose %dx%d@%d:%d in %dx%d\n",
			r.width, r.height, r.left, r.top,
			vin->format.width, vin->format.height);
		break;
	default:
		return -EINVAL;
	}

	/* HW supports modifying configuration while running */
	rvin_crop_scale_comp(vin);

	return 0;
}

static int rvin_g_pixelaspect(struct file *file, void *priv,
			      int type, struct v4l2_fract *f)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);

	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	return v4l2_subdev_call(sd, video, g_pixelaspect, f);
}

static int rvin_enum_input(struct file *file, void *priv,
			   struct v4l2_input *i)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);
	int ret;

	if (i->index != 0)
		return -EINVAL;

	ret = v4l2_subdev_call(sd, video, g_input_status, &i->status);
	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
		return ret;

	i->type = V4L2_INPUT_TYPE_CAMERA;

	if (v4l2_subdev_has_op(sd, pad, dv_timings_cap)) {
		i->capabilities = V4L2_IN_CAP_DV_TIMINGS;
		i->std = 0;
	} else {
		i->capabilities = V4L2_IN_CAP_STD;
		i->std = vin->vdev.tvnorms;
	}

	strscpy(i->name, "Camera", sizeof(i->name));

	return 0;
}

static int rvin_g_input(struct file *file, void *priv, unsigned int *i)
{
	*i = 0;
	return 0;
}

static int rvin_s_input(struct file *file, void *priv, unsigned int i)
{
	if (i > 0)
		return -EINVAL;
	return 0;
}

static int rvin_querystd(struct file *file, void *priv, v4l2_std_id *a)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);

	return v4l2_subdev_call(sd, video, querystd, a);
}

static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a)
{
	struct rvin_dev *vin = video_drvdata(file);
	int ret;

	ret = v4l2_subdev_call(vin_to_source(vin), video, s_std, a);
	if (ret < 0)
		return ret;

	vin->std = a;

	/* Changing the standard will change the width/height */
	return rvin_reset_format(vin);
}

static int rvin_g_std(struct file *file, void *priv, v4l2_std_id *a)
{
	struct rvin_dev *vin = video_drvdata(file);

	if (v4l2_subdev_has_op(vin_to_source(vin), pad, dv_timings_cap))
		return -ENOIOCTLCMD;

	*a = vin->std;

	return 0;
}

static int rvin_subscribe_event(struct v4l2_fh *fh,
				const struct v4l2_event_subscription *sub)
{
	switch (sub->type) {
	case V4L2_EVENT_SOURCE_CHANGE:
		return v4l2_event_subscribe(fh, sub, 4, NULL);
	}
	return v4l2_ctrl_subscribe_event(fh, sub);
}

static int rvin_enum_dv_timings(struct file *file, void *priv_fh,
				struct v4l2_enum_dv_timings *timings)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);
	int ret;

	if (timings->pad)
		return -EINVAL;

	timings->pad = vin->parallel->sink_pad;

	ret = v4l2_subdev_call(sd, pad, enum_dv_timings, timings);

	timings->pad = 0;

	return ret;
}

static int rvin_s_dv_timings(struct file *file, void *priv_fh,
			     struct v4l2_dv_timings *timings)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);
	int ret;

	ret = v4l2_subdev_call(sd, video, s_dv_timings, timings);
	if (ret)
		return ret;

	/* Changing the timings will change the width/height */
	return rvin_reset_format(vin);
}

static int rvin_g_dv_timings(struct file *file, void *priv_fh,
			     struct v4l2_dv_timings *timings)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);

	return v4l2_subdev_call(sd, video, g_dv_timings, timings);
}

static int rvin_query_dv_timings(struct file *file, void *priv_fh,
				 struct v4l2_dv_timings *timings)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);

	return v4l2_subdev_call(sd, video, query_dv_timings, timings);
}

static int rvin_dv_timings_cap(struct file *file, void *priv_fh,
			       struct v4l2_dv_timings_cap *cap)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);
	int ret;

	if (cap->pad)
		return -EINVAL;

	cap->pad = vin->parallel->sink_pad;

	ret = v4l2_subdev_call(sd, pad, dv_timings_cap, cap);

	cap->pad = 0;

	return ret;
}

static int rvin_g_edid(struct file *file, void *fh, struct v4l2_edid *edid)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);
	int ret;

	if (edid->pad)
		return -EINVAL;

	edid->pad = vin->parallel->sink_pad;

	ret = v4l2_subdev_call(sd, pad, get_edid, edid);

	edid->pad = 0;

	return ret;
}

static int rvin_s_edid(struct file *file, void *fh, struct v4l2_edid *edid)
{
	struct rvin_dev *vin = video_drvdata(file);
	struct v4l2_subdev *sd = vin_to_source(vin);
	int ret;

	if (edid->pad)
		return -EINVAL;

	edid->pad = vin->parallel->sink_pad;

	ret = v4l2_subdev_call(sd, pad, set_edid, edid);

	edid->pad = 0;

	return ret;
}

static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
	.vidioc_querycap		= rvin_querycap,
	.vidioc_try_fmt_vid_cap		= rvin_try_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap		= rvin_g_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap		= rvin_s_fmt_vid_cap,
	.vidioc_enum_fmt_vid_cap	= rvin_enum_fmt_vid_cap,

	.vidioc_g_selection		= rvin_g_selection,
	.vidioc_s_selection		= rvin_s_selection,

	.vidioc_g_pixelaspect		= rvin_g_pixelaspect,

	.vidioc_enum_input		= rvin_enum_input,
	.vidioc_g_input			= rvin_g_input,
	.vidioc_s_input			= rvin_s_input,

	.vidioc_dv_timings_cap		= rvin_dv_timings_cap,
	.vidioc_enum_dv_timings		= rvin_enum_dv_timings,
	.vidioc_g_dv_timings		= rvin_g_dv_timings,
	.vidioc_s_dv_timings		= rvin_s_dv_timings,
	.vidioc_query_dv_timings	= rvin_query_dv_timings,

	.vidioc_g_edid			= rvin_g_edid,
	.vidioc_s_edid			= rvin_s_edid,

	.vidioc_querystd		= rvin_querystd,
	.vidioc_g_std			= rvin_g_std,
	.vidioc_s_std			= rvin_s_std,

	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
	.vidioc_querybuf		= vb2_ioctl_querybuf,
	.vidioc_qbuf			= vb2_ioctl_qbuf,
	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
	.vidioc_expbuf			= vb2_ioctl_expbuf,
	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
	.vidioc_streamon		= vb2_ioctl_streamon,
	.vidioc_streamoff		= vb2_ioctl_streamoff,

	.vidioc_log_status		= v4l2_ctrl_log_status,
	.vidioc_subscribe_event		= rvin_subscribe_event,
	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
};

/* -----------------------------------------------------------------------------
 * V4L2 Media Controller
 */

static void rvin_mc_try_format(struct rvin_dev *vin,
			       struct v4l2_pix_format *pix)
{
	/*
	 * The V4L2 specification clearly documents the colorspace fields
	 * as being set by drivers for capture devices. Using the values
	 * supplied by userspace thus wouldn't comply with the API. Until
	 * the API is updated force fixed vaules.
	 */
	pix->colorspace = RVIN_DEFAULT_COLORSPACE;
	pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace);
	pix->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace);
	pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, pix->colorspace,
							  pix->ycbcr_enc);

	rvin_format_align(vin, pix);
}

static int rvin_mc_try_fmt_vid_cap(struct file *file, void *priv,
				   struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);

	rvin_mc_try_format(vin, &f->fmt.pix);

	return 0;
}

static int rvin_mc_s_fmt_vid_cap(struct file *file, void *priv,
				 struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);

	if (vb2_is_busy(&vin->queue))
		return -EBUSY;

	rvin_mc_try_format(vin, &f->fmt.pix);

	vin->format = f->fmt.pix;

	vin->crop.top = 0;
	vin->crop.left = 0;
	vin->crop.width = vin->format.width;
	vin->crop.height = vin->format.height;
	vin->compose = vin->crop;

	return 0;
}

static int rvin_mc_enum_input(struct file *file, void *priv,
			      struct v4l2_input *i)
{
	if (i->index != 0)
		return -EINVAL;

	i->type = V4L2_INPUT_TYPE_CAMERA;
	strscpy(i->name, "Camera", sizeof(i->name));

	return 0;
}

static const struct v4l2_ioctl_ops rvin_mc_ioctl_ops = {
	.vidioc_querycap		= rvin_querycap,
	.vidioc_try_fmt_vid_cap		= rvin_mc_try_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap		= rvin_g_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap		= rvin_mc_s_fmt_vid_cap,
	.vidioc_enum_fmt_vid_cap	= rvin_enum_fmt_vid_cap,

	.vidioc_enum_input		= rvin_mc_enum_input,
	.vidioc_g_input			= rvin_g_input,
	.vidioc_s_input			= rvin_s_input,

	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
	.vidioc_querybuf		= vb2_ioctl_querybuf,
	.vidioc_qbuf			= vb2_ioctl_qbuf,
	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
	.vidioc_expbuf			= vb2_ioctl_expbuf,
	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
	.vidioc_streamon		= vb2_ioctl_streamon,
	.vidioc_streamoff		= vb2_ioctl_streamoff,

	.vidioc_log_status		= v4l2_ctrl_log_status,
	.vidioc_subscribe_event		= rvin_subscribe_event,
	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
};

/* -----------------------------------------------------------------------------
 * File Operations
 */

static int rvin_power_on(struct rvin_dev *vin)
{
	int ret;
	struct v4l2_subdev *sd = vin_to_source(vin);

	pm_runtime_get_sync(vin->v4l2_dev.dev);

	ret = v4l2_subdev_call(sd, core, s_power, 1);
	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
		return ret;
	return 0;
}
Exemplo n.º 2
0
static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
{
	struct v4l2_pix_format_mplane *pix_mp;
	const struct camss_format_info *fi;
	struct v4l2_plane_pix_format *p;
	u32 bytesperline[3] = { 0 };
	u32 sizeimage[3] = { 0 };
	u32 width, height;
	u32 bpl, lines;
	int i, j;

	pix_mp = &f->fmt.pix_mp;

	if (video->line_based)
		for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
			p = &pix_mp->plane_fmt[i];
			bytesperline[i] = clamp_t(u32, p->bytesperline,
						  1, 65528);
			sizeimage[i] = clamp_t(u32, p->sizeimage,
					       bytesperline[i],
					       bytesperline[i] * 4096);
		}

	for (j = 0; j < video->nformats; j++)
		if (pix_mp->pixelformat == video->formats[j].pixelformat)
			break;

	if (j == video->nformats)
		j = 0; /* default format */

	fi = &video->formats[j];
	width = pix_mp->width;
	height = pix_mp->height;

	memset(pix_mp, 0, sizeof(*pix_mp));

	pix_mp->pixelformat = fi->pixelformat;
	pix_mp->width = clamp_t(u32, width, 1, 8191);
	pix_mp->height = clamp_t(u32, height, 1, 8191);
	pix_mp->num_planes = fi->planes;
	for (i = 0; i < pix_mp->num_planes; i++) {
		bpl = pix_mp->width / fi->hsub[i].numerator *
			fi->hsub[i].denominator * fi->bpp[i] / 8;
		bpl = ALIGN(bpl, video->bpl_alignment);
		pix_mp->plane_fmt[i].bytesperline = bpl;
		pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
			fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
	}

	pix_mp->field = V4L2_FIELD_NONE;
	pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
	pix_mp->flags = 0;
	pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
	pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
					pix_mp->colorspace, pix_mp->ycbcr_enc);
	pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);

	if (video->line_based)
		for (i = 0; i < pix_mp->num_planes; i++) {
			p = &pix_mp->plane_fmt[i];
			p->bytesperline = clamp_t(u32, p->bytesperline,
						  1, 65528);
			p->sizeimage = clamp_t(u32, p->sizeimage,
					       p->bytesperline,
					       p->bytesperline * 4096);
			lines = p->sizeimage / p->bytesperline;

			if (p->bytesperline < bytesperline[i])
				p->bytesperline = ALIGN(bytesperline[i], 8);

			if (p->sizeimage < p->bytesperline * lines)
				p->sizeimage = p->bytesperline * lines;

			if (p->sizeimage < sizeimage[i])
				p->sizeimage = sizeimage[i];
		}

	return 0;
}