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| author | Steve Longerbeam <slongerbeam@gmail.com> | 2019-02-20 18:53:29 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-25 18:23:27 +0200 |
| commit | ef12f5b54da440e08407e08667ba5cb4fc37ea65 (patch) | |
| tree | 3891a992ffae90159914d62e3d7afb4e118b3fde /drivers/staging | |
| parent | 77e1787081366884e8ebd7847c7631ec66b44b47 (diff) | |
| download | linux-stable-ef12f5b54da440e08407e08667ba5cb4fc37ea65.tar.gz linux-stable-ef12f5b54da440e08407e08667ba5cb4fc37ea65.tar.bz2 linux-stable-ef12f5b54da440e08407e08667ba5cb4fc37ea65.zip | |
media: imx: csi: Allow unknown nearest upstream entities
commit 904371f90b2c0c749a5ab75478c129a4682ac3d8 upstream.
On i.MX6, the nearest upstream entity to the CSI can only be the
CSI video muxes or the Synopsys DW MIPI CSI-2 receiver.
However the i.MX53 has no CSI video muxes or a MIPI CSI-2 receiver.
So allow for the nearest upstream entity to the CSI to be something
other than those.
Fixes: bf3cfaa712e5c ("media: staging/imx: get CSI bus type from nearest
upstream entity")
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/media/imx/imx-media-csi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c index e22f1239a318..d17ce1fb4ef5 100644 --- a/drivers/staging/media/imx/imx-media-csi.c +++ b/drivers/staging/media/imx/imx-media-csi.c @@ -153,9 +153,10 @@ static inline bool requires_passthrough(struct v4l2_fwnode_endpoint *ep, /* * Parses the fwnode endpoint from the source pad of the entity * connected to this CSI. This will either be the entity directly - * upstream from the CSI-2 receiver, or directly upstream from the - * video mux. The endpoint is needed to determine the bus type and - * bus config coming into the CSI. + * upstream from the CSI-2 receiver, directly upstream from the + * video mux, or directly upstream from the CSI itself. The endpoint + * is needed to determine the bus type and bus config coming into + * the CSI. */ static int csi_get_upstream_endpoint(struct csi_priv *priv, struct v4l2_fwnode_endpoint *ep) @@ -168,7 +169,8 @@ static int csi_get_upstream_endpoint(struct csi_priv *priv, if (!priv->src_sd) return -EPIPE; - src = &priv->src_sd->entity; + sd = priv->src_sd; + src = &sd->entity; if (src->function == MEDIA_ENT_F_VID_MUX) { /* @@ -182,6 +184,14 @@ static int csi_get_upstream_endpoint(struct csi_priv *priv, src = &sd->entity; } + /* + * If the source is neither the video mux nor the CSI-2 receiver, + * get the source pad directly upstream from CSI itself. + */ + if (src->function != MEDIA_ENT_F_VID_MUX && + sd->grp_id != IMX_MEDIA_GRP_ID_CSI2) + src = &priv->sd.entity; + /* get source pad of entity directly upstream from src */ pad = imx_media_find_upstream_pad(priv->md, src, 0); if (IS_ERR(pad)) |