From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-media@vger.kernel.org
Cc: hverkuil@xs4all.nl, niklas.soderlund@ragnatech.se,
laurent.pinchart@ideasonboard.com
Subject: [PATCH 4/9] v4l2-async: Add v4l2_async_notifier_add_fwnode_remote_subdev
Date: Fri, 5 Apr 2019 12:41:22 +0300 [thread overview]
Message-ID: <20190405094127.18975-6-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20190405094127.18975-1-sakari.ailus@linux.intel.com>
v4l2_async_notifier_add_fwnode_remote_subdev is a convenience function for
parsing information on V4L2 fwnode subdevs.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/media/v4l2-core/v4l2-async.c | 23 +++++++++++++++++++++++
include/media/v4l2-async.h | 25 +++++++++++++++++++++++++
2 files changed, 48 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index dc4e83b4f6ba..2ea8afbcbf8f 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -609,6 +609,29 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
}
EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_subdev);
+int
+v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
+ struct fwnode_handle *endpoint,
+ struct v4l2_async_subdev *asd)
+{
+ struct fwnode_handle *remote_ep;
+ int ret;
+
+ remote_ep = fwnode_graph_get_remote_endpoint(endpoint);
+ if (!remote_ep)
+ return -ENOTCONN;
+
+ asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
+ asd->match.fwnode = remote_ep;
+
+ ret = v4l2_async_notifier_add_subdev(notif, asd);
+ if (ret)
+ fwnode_handle_put(remote_ep);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(v4l2_async_notifier_add_fwnode_remote_subdev);
+
struct v4l2_async_subdev *
v4l2_async_notifier_add_i2c_subdev(struct v4l2_async_notifier *notifier,
int adapter_id, unsigned short address,
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h
index b9141ffa188a..55ce3c1672a4 100644
--- a/include/media/v4l2-async.h
+++ b/include/media/v4l2-async.h
@@ -185,6 +185,31 @@ v4l2_async_notifier_add_fwnode_subdev(struct v4l2_async_notifier *notifier,
unsigned int asd_struct_size);
/**
+ * v4l2_async_notifier_add_fwnode_remote_subdev - Allocate and add a fwnode
+ * remote async subdev to the
+ * notifier's master asd_list.
+ *
+ * @notif: pointer to &struct v4l2_async_notifier
+ * @endpoint: local endpoint the remote sub-device to be matched
+ * @asd: Async sub-device struct allocated by the caller. The &struct
+ * v4l2_async_subdev shall be the first member of the driver's async
+ * sub-device struct, i.e. both begin at the same memory address.
+ *
+ * Gets the remote endpoint of a given local endpoint, set it up for fwnode
+ * matching and add the async sub-device to the notifier's @asd_list. The
+ * function also gets a reference of the fwnode which is released later at
+ * notifier cleanup time.
+ *
+ * This is just like @v4l2_async_notifier_add_fwnode_subdev, but with the
+ * exception that the fwnode refers to a local endpoint, not the remote one, and
+ * the function relies on the caller to allocate the async sub-device struct.
+ */
+int
+v4l2_async_notifier_add_fwnode_remote_subdev(struct v4l2_async_notifier *notif,
+ struct fwnode_handle *endpoint,
+ struct v4l2_async_subdev *asd);
+
+/**
* v4l2_async_notifier_add_i2c_subdev - Allocate and add an i2c async
* subdev to the notifier's master asd_list.
*
--
2.11.0
next prev parent reply other threads:[~2019-04-05 9:41 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-05 9:41 [PATCH 0/9] Rework V4L2 fwnode parsing; add defaults and avoid iteration Sakari Ailus
2019-04-05 9:41 ` [PATCH 1/9] davinci-vpif: Don't dereference endpoint after putting it, fix refcounting Sakari Ailus
2019-04-05 9:41 ` [PATCH 1/9] davinci-vpif: Fix endpoint refcounting Sakari Ailus
2019-04-05 11:30 ` Ian Arkver
2019-04-05 11:34 ` Sakari Ailus
2019-04-05 9:41 ` [PATCH 2/9] v4l2-async: Use endpoint node, not device node, for fwnode match Sakari Ailus
2019-06-13 0:52 ` Niklas Söderlund
2019-04-05 9:41 ` [PATCH 3/9] v4l2-async: Get fwnode reference when putting it to the notifier's list Sakari Ailus
2019-04-05 9:41 ` Sakari Ailus [this message]
2019-04-05 9:41 ` [PATCH 5/9] omap3isp: Rework OF endpoint parsing Sakari Ailus
2019-04-05 9:41 ` [PATCH 6/9] v4l2-async: Safely clean up an uninitialised notifier Sakari Ailus
2019-04-05 9:41 ` [PATCH 7/9] ipu3-cio2: Clean up notifier's subdev list if parsing endpoints fails Sakari Ailus
2019-04-05 9:41 ` [PATCH 8/9] ipu3-cio2: Proceed with notifier init even if there are no subdevs Sakari Ailus
2019-04-05 9:41 ` [PATCH 9/9] ipu3-cio2: Parse information from firmware without using callbacks Sakari Ailus
2019-04-05 11:16 ` [PATCH 0/9] Rework V4L2 fwnode parsing; add defaults and avoid iteration Sakari Ailus
2019-04-12 15:33 ` Jacopo Mondi
2019-04-12 20:27 ` Sakari Ailus
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