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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-08-28 10:28:27 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2013-10-31 04:33:02 -0200
commit774cc4c289152bfb77806ccae722a9ae2d29dd02 (patch)
treed1251373eea66faece4cf0c8643944036c7e2d3a /include/media
parentcf326dfebe612bf56c83d8fca7a7c1d1584c061f (diff)
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[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.h3
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