"S_FMT cannot handle an invalid pixelformat." for MEDIA_BUS_FMT_UYVY8_2X8

[wangxiaopeng]

thanks, tegra_channel_get_format returns 0 only! &
__tegra_channel_try_format is not called when implement v4l2-compliance -d /dev/video0

static int
__tegra_channel_try_format(struct tegra_channel *chan,
			struct v4l2_pix_format *pix)
{
	const struct tegra_video_format *vfmt;
	struct v4l2_subdev_format fmt;
	struct v4l2_subdev *sd = chan->subdev_on_csi;
	int ret = 0;

	/* Use the channel format if pixformat is not supported */
	vfmt = tegra_core_get_format_by_fourcc(chan, pix->pixelformat);
	if (!vfmt) {
		pix->pixelformat = chan->format.pixelformat;
		vfmt = tegra_core_get_format_by_fourcc(chan, pix->pixelformat);
	}

	fmt.which = V4L2_SUBDEV_FORMAT_TRY;
	fmt.pad = 0;
	v4l2_fill_mbus_format(&fmt.format, pix, vfmt->code);

	ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &fmt);
	if (ret == -ENOIOCTLCMD)
		return -ENOTTY;

	v4l2_fill_pix_format(pix, &fmt.format);

	tegra_channel_set_bytesperline(chan, vfmt, pix);
	tegra_channel_fmt_align(chan, vfmt,
				&pix->width, &pix->height, &pix->bytesperline);
	pix->sizeimage = get_aligned_buffer_size(chan,
			pix->bytesperline, pix->height);
	if (chan->fmtinfo->fourcc == V4L2_PIX_FMT_NV16)
		pix->sizeimage *= 2;

	<b>printk("__tegra_channel_try_format ret %d\n", ret);</b>
	return ret;
}

@JerryChang

hello wangxiaopeng,

here’s sensor get format failure, please review below kernel sources to check which paragraph return failures.
thanks

<i>$l4t-r32.3.1/kernel/nvidia/drivers/media/platform/tegra/camera/vi/channel.c</i>

static int tegra_channel_get_format(struct file *file, void *fh, struct v4l2_format *format){...}

static int __tegra_channel_try_format(struct tegra_channel *chan, struct v4l2_pix_format *pix){...}