diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-08-28 17:28:27 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-10-31 10:33:02 +0400 |
| commit | 774cc4c289152bfb77806ccae722a9ae2d29dd02 (patch) | |
| tree | d1251373eea66faece4cf0c8643944036c7e2d3a /include/media | |
| parent | cf326dfebe612bf56c83d8fca7a7c1d1584c061f (diff) | |
| download | linux-774cc4c289152bfb77806ccae722a9ae2d29dd02.tar.xz | |
[media] V4L2: add a v4l2-clk helper macro to produce an I2C device ID
To obtain a clock reference consumers supply their device object to the
V4L2 clock framework. The latter then uses the consumer device name to
find a matching clock. For that to work V4L2 clock providers have to
provide the same device name, when registering clocks. This patch adds
a helper macro to generate a suitable device name for I2C devices.
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 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/media/v4l2-clk.h b/include/media/v4l2-clk.h index a354a9d6456e..0b36cc138304 100644 --- a/include/media/v4l2-clk.h +++ b/include/media/v4l2-clk.h @@ -65,4 +65,7 @@ static inline struct v4l2_clk *v4l2_clk_register_fixed(const char *dev_id, return __v4l2_clk_register_fixed(dev_id, id, rate, THIS_MODULE); } +#define v4l2_clk_name_i2c(name, size, adap, client) snprintf(name, size, \ + "%d-%04x", adap, client) + #endif |