From: Guennadi Liakhovetski Date: Sat, 4 Jun 2011 18:06:47 +0000 (-0300) Subject: [media] V4L: mx2_camera: .try_fmt shouldn't fail X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=28281a71eb3bc08a0fb9514886e7d6e868f71b3f;p=openwrt%2Fstaging%2Fblogic.git [media] V4L: mx2_camera: .try_fmt shouldn't fail If the user is requesting too large a frame, instead of failing select an acceptable geometry, preserving the requested aspect ratio. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c index e05e80090959..55d48442c2eb 100644 --- a/drivers/media/video/mx2_camera.c +++ b/drivers/media/video/mx2_camera.c @@ -973,11 +973,16 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd, if (pix->bytesperline < 0) return pix->bytesperline; pix->sizeimage = pix->height * pix->bytesperline; - if (pix->sizeimage > (4 * 0x3ffff)) { /* CSIRXCNT limit */ - dev_warn(icd->dev.parent, - "Image size (%u) above limit\n", - pix->sizeimage); - return -EINVAL; + /* Check against the CSIRXCNT limit */ + if (pix->sizeimage > 4 * 0x3ffff) { + /* Adjust geometry, preserve aspect ratio */ + unsigned int new_height = int_sqrt(4 * 0x3ffff * + pix->height / pix->bytesperline); + pix->width = new_height * pix->width / pix->height; + pix->height = new_height; + pix->bytesperline = soc_mbus_bytes_per_line(pix->width, + xlate->host_fmt); + BUG_ON(pix->bytesperline < 0); } }