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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-08-28 10:28:26 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2013-10-31 04:31:30 -0200
commitcf326dfebe612bf56c83d8fca7a7c1d1584c061f (patch)
tree0147f77a00da075c875c44b835b7eeb5502b5460 /include/media
parentd3f884a70938b1776ba44c7b6c82f3c3fd54ccbd (diff)
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[media] V4L2: add v4l2-clock helpers to register and unregister a fixed-rate clock
Many bridges and video host controllers supply fixed rate always on clocks to their I2C devices. This patch adds two simple helpers to register and unregister such a clock. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-clk.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/media/v4l2-clk.h b/include/media/v4l2-clk.h
index 0503a90b48bb..a354a9d6456e 100644
--- a/include/media/v4l2-clk.h
+++ b/include/media/v4l2-clk.h
@@ -15,6 +15,7 @@
#define MEDIA_V4L2_CLK_H
#include <linux/atomic.h>
+#include <linux/export.h>
#include <linux/list.h>
#include <linux/mutex.h>
@@ -51,4 +52,17 @@ void v4l2_clk_disable(struct v4l2_clk *clk);
unsigned long v4l2_clk_get_rate(struct v4l2_clk *clk);
int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate);
+struct module;
+
+struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id,
+ const char *id, unsigned long rate, struct module *owner);
+void v4l2_clk_unregister_fixed(struct v4l2_clk *clk);
+
+static inline struct v4l2_clk *v4l2_clk_register_fixed(const char *dev_id,
+ const char *id,
+ unsigned long rate)
+{
+ return __v4l2_clk_register_fixed(dev_id, id, rate, THIS_MODULE);
+}
+
#endif