diff options
author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-08-28 13:28:26 (GMT) |
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committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-10-31 06:31:30 (GMT) |
commit | cf326dfebe612bf56c83d8fca7a7c1d1584c061f (patch) | |
tree | 0147f77a00da075c875c44b835b7eeb5502b5460 /include/media | |
parent | d3f884a70938b1776ba44c7b6c82f3c3fd54ccbd (diff) | |
download | linux-cf326dfebe612bf56c83d8fca7a7c1d1584c061f.tar.xz |
[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.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/media/v4l2-clk.h b/include/media/v4l2-clk.h index 0503a90..a354a9d 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 |