From 6ec5575c381de50b17e68796435f20ce1b27de79 Mon Sep 17 00:00:00 2001 From: Javier Martin Date: Tue, 30 Oct 2012 11:29:00 -0300 Subject: [PATCH] [media] media: mx2_camera: Add image size HW limits The CSI on i.MX27 has some constraints regarding image width. This patch makes sure those requirements are met in try_fmt(). Signed-off-by: Javier Martin [g.liakhovetski@gmx.de: make constraint i.MX27-specific] Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/soc_camera/mx2_camera.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c index 77529f8..2c14802 100644 --- a/drivers/media/platform/soc_camera/mx2_camera.c +++ b/drivers/media/platform/soc_camera/mx2_camera.c @@ -1394,8 +1394,6 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd, return -EINVAL; } - /* FIXME: implement MX27 limits */ - /* limit to MX25 hardware capabilities */ if (cpu_is_mx25()) { if (xlate->host_fmt->bits_per_sample <= 8) @@ -1427,6 +1425,12 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd, pix->sizeimage = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline, pix->height); } + } else { + /* + * Width must be a multiple of 8 as requested by the CSI. + * (Table 39-2 in the i.MX27 Reference Manual). + */ + pix->width &= ~0x7; } /* limit to sensor capabilities */ -- 2.7.4