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authorDave Gerlach <d-gerlach@ti.com>2015-05-22 23:45:27 +0300
committerOhad Ben-Cohen <ohad@wizery.com>2015-06-16 21:12:52 +0300
commitfec47d863587c272d6fbf4e50066209c953d5e60 (patch)
tree69d0df993b81d611cb3f878c66c8cb8a21ae8a1a /Documentation/remoteproc.txt
parent172e6ab1caffcd2dd2910b44d88d096f2c6985fa (diff)
downloadlinux-fec47d863587c272d6fbf4e50066209c953d5e60.tar.xz
remoteproc: introduce rproc_get_by_phandle API
Allow users of remoteproc the ability to get a handle to an rproc by passing a phandle supplied in the user's device tree node. This is useful in situations that require manual booting of the rproc. This patch uses the code removed by commit 40e575b1d0b3 ("remoteproc: remove the get_by_name/put API") for the ref counting but is modified to use a simple list and locking mechanism and has rproc_get_by_name replaced with an rproc_get_by_phandle API. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com> [fix order of Signed-off-by tags] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Diffstat (limited to 'Documentation/remoteproc.txt')
-rw-r--r--Documentation/remoteproc.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/remoteproc.txt b/Documentation/remoteproc.txt
index e6469fdcf89a..ef0219fa4bb4 100644
--- a/Documentation/remoteproc.txt
+++ b/Documentation/remoteproc.txt
@@ -51,6 +51,12 @@ cost.
rproc_shutdown() returns, and users can still use it with a subsequent
rproc_boot(), if needed.
+ struct rproc *rproc_get_by_phandle(phandle phandle)
+ - Find an rproc handle using a device tree phandle. Returns the rproc
+ handle on success, and NULL on failure. This function increments
+ the remote processor's refcount, so always use rproc_put() to
+ decrement it back once rproc isn't needed anymore.
+
3. Typical usage
#include <linux/remoteproc.h>