From: Steve Longerbeam <slongerbeam@gmail.com>
To: linux-media@vger.kernel.org
Cc: "open list:STAGING SUBSYSTEM" <devel@driverdev.osuosl.org>,
Fabio Estevam <festevam@gmail.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
open list <linux-kernel@vger.kernel.org>,
Rui Miguel Silva <rmfrfs@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Steve Longerbeam <slongerbeam@gmail.com>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: [RESEND PATCH v3 14/17] media: imx: csi: Lookup upstream endpoint with imx_media_get_pad_fwnode
Date: Sat, 15 Feb 2020 11:41:33 -0800 [thread overview]
Message-ID: <20200215194136.10131-15-slongerbeam@gmail.com> (raw)
In-Reply-To: <20200215194136.10131-1-slongerbeam@gmail.com>
Fix the 1:1 port-id:pad-index assumption for the upstream subdevice, by
searching the upstream subdevice's endpoints for one that maps to the
pad's index. This is carried out by a new reverse mapping function
imx_media_get_pad_fwnode().
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
---
drivers/staging/media/imx/imx-media-csi.c | 22 ++++----------
drivers/staging/media/imx/imx-media-utils.c | 33 +++++++++++++++++++++
drivers/staging/media/imx/imx-media.h | 1 +
drivers/staging/media/imx/imx7-media-csi.c | 25 +++++-----------
4 files changed, 47 insertions(+), 34 deletions(-)
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index 2a8f01375f78..7d4c1c9640dd 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -164,7 +164,7 @@ static inline bool requires_passthrough(struct v4l2_fwnode_endpoint *ep,
static int csi_get_upstream_endpoint(struct csi_priv *priv,
struct v4l2_fwnode_endpoint *ep)
{
- struct device_node *endpoint, *port;
+ struct fwnode_handle *endpoint;
struct media_entity *src;
struct v4l2_subdev *sd;
struct media_pad *pad;
@@ -203,23 +203,13 @@ static int csi_get_upstream_endpoint(struct csi_priv *priv,
if (!pad)
return -ENODEV;
- sd = media_entity_to_v4l2_subdev(pad->entity);
+ endpoint = imx_media_get_pad_fwnode(pad);
+ if (IS_ERR(endpoint))
+ return PTR_ERR(endpoint);
- /*
- * NOTE: this assumes an OF-graph port id is the same as a
- * media pad index.
- */
- port = of_graph_get_port_by_id(sd->dev->of_node, pad->index);
- if (!port)
- return -ENODEV;
-
- endpoint = of_get_next_child(port, NULL);
- of_node_put(port);
- if (!endpoint)
- return -ENODEV;
+ v4l2_fwnode_endpoint_parse(endpoint, ep);
- v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), ep);
- of_node_put(endpoint);
+ fwnode_handle_put(endpoint);
return 0;
}
diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index 87152bd9af22..61752c6b074d 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -1007,6 +1007,39 @@ imx_media_pipeline_video_device(struct media_entity *start_entity,
}
EXPORT_SYMBOL_GPL(imx_media_pipeline_video_device);
+/*
+ * Find a fwnode endpoint that maps to the given subdevice's pad.
+ * If there are multiple endpoints that map to the pad, only the
+ * first endpoint encountered is returned.
+ *
+ * On success the refcount of the returned fwnode endpoint is
+ * incremented.
+ */
+struct fwnode_handle *imx_media_get_pad_fwnode(struct media_pad *pad)
+{
+ struct fwnode_handle *endpoint;
+ struct v4l2_subdev *sd;
+
+ if (!is_media_entity_v4l2_subdev(pad->entity))
+ return ERR_PTR(-ENODEV);
+
+ sd = media_entity_to_v4l2_subdev(pad->entity);
+
+ fwnode_graph_for_each_endpoint(dev_fwnode(sd->dev), endpoint) {
+ int pad_idx = media_entity_get_fwnode_pad(&sd->entity,
+ endpoint,
+ pad->flags);
+ if (pad_idx < 0)
+ continue;
+
+ if (pad_idx == pad->index)
+ return endpoint;
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+EXPORT_SYMBOL_GPL(imx_media_get_pad_fwnode);
+
/*
* Turn current pipeline streaming on/off starting from entity.
*/
diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
index f90a65ba4ced..5f23d852122f 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h
@@ -205,6 +205,7 @@ imx_media_pipeline_subdev(struct media_entity *start_entity, u32 grp_id,
struct video_device *
imx_media_pipeline_video_device(struct media_entity *start_entity,
enum v4l2_buf_type buftype, bool upstream);
+struct fwnode_handle *imx_media_get_pad_fwnode(struct media_pad *pad);
struct imx_media_dma_buf {
void *virt;
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index cf9f675c53a3..f2ed13aca2b0 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -439,9 +439,8 @@ static int imx7_csi_get_upstream_endpoint(struct imx7_csi *csi,
struct v4l2_fwnode_endpoint *ep,
bool skip_mux)
{
- struct device_node *endpoint, *port;
+ struct fwnode_handle *endpoint;
struct media_entity *src;
- struct v4l2_subdev *sd;
struct media_pad *pad;
if (!csi->src_sd)
@@ -463,29 +462,19 @@ static int imx7_csi_get_upstream_endpoint(struct imx7_csi *csi,
if (!pad)
return -ENODEV;
- sd = media_entity_to_v4l2_subdev(pad->entity);
-
/* To get bus type we may need to skip video mux */
if (skip_mux && src->function == MEDIA_ENT_F_VID_MUX) {
- src = &sd->entity;
+ src = pad->entity;
goto skip_video_mux;
}
- /*
- * NOTE: this assumes an OF-graph port id is the same as a
- * media pad index.
- */
- port = of_graph_get_port_by_id(sd->dev->of_node, pad->index);
- if (!port)
- return -ENODEV;
+ endpoint = imx_media_get_pad_fwnode(pad);
+ if (IS_ERR(endpoint))
+ return PTR_ERR(endpoint);
- endpoint = of_get_next_child(port, NULL);
- of_node_put(port);
- if (!endpoint)
- return -ENODEV;
+ v4l2_fwnode_endpoint_parse(endpoint, ep);
- v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint), ep);
- of_node_put(endpoint);
+ fwnode_handle_put(endpoint);
return 0;
}
--
2.17.1
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next prev parent reply other threads:[~2020-02-15 19:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200215194136.10131-1-slongerbeam@gmail.com>
2020-02-15 19:41 ` [RESEND PATCH v3 02/17] media: v4l2-fwnode: Pass notifier to v4l2_async_register_fwnode_subdev() Steve Longerbeam
2020-02-25 15:07 ` Sakari Ailus
2020-02-26 23:50 ` Steve Longerbeam
2020-02-27 7:50 ` Sakari Ailus
2020-02-28 18:16 ` Steve Longerbeam
2020-02-28 22:27 ` Sakari Ailus
2020-02-15 19:41 ` [RESEND PATCH v3 03/17] media: imx: csi: Implement get_fwnode_pad op Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 04/17] media: imx: mipi csi-2: " Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 06/17] media: imx: Add imx_media_create_fwnode_pad_link() Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 08/17] media: imx: mipi csi-2: Create media links in bound notifier Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 09/17] media: imx7-mipi-csis: " Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 10/17] media: imx7-media-csi: " Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 11/17] media: imx: csi: Embed notifier in struct csi_priv Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 12/17] media: imx: csi: Add missing notifier unregister/cleanup Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 13/17] media: imx: csi: Create media links in bound notifier Steve Longerbeam
2020-02-15 19:41 ` Steve Longerbeam [this message]
2020-02-15 19:41 ` [RESEND PATCH v3 15/17] media: imx: Create missing links from CSI-2 receiver Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 16/17] media: imx: silence a couple debug messages Steve Longerbeam
2020-02-15 19:41 ` [RESEND PATCH v3 17/17] media: imx: TODO: Remove media link creation todos Steve Longerbeam
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