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| author | Dave Gerlach <d-gerlach@ti.com> | 2015-05-22 15:45:27 -0500 |
|---|---|---|
| committer | Ohad Ben-Cohen <ohad@wizery.com> | 2015-06-16 21:12:52 +0300 |
| commit | fec47d863587c272d6fbf4e50066209c953d5e60 (patch) | |
| tree | 69d0df993b81d611cb3f878c66c8cb8a21ae8a1a /Documentation | |
| parent | 172e6ab1caffcd2dd2910b44d88d096f2c6985fa (diff) | |
| download | lwn-fec47d863587c272d6fbf4e50066209c953d5e60.tar.gz lwn-fec47d863587c272d6fbf4e50066209c953d5e60.zip | |
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')
| -rw-r--r-- | Documentation/remoteproc.txt | 6 |
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> |