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authorSylwester Nawrocki <s.nawrocki@samsung.com>2011-09-04 19:08:54 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-11-03 18:29:09 -0200
commitd26a6635b24210791cf4b71fd861738270c8cc3c (patch)
tree2f5a40c24c58a456bf6882b372f8d7620cb9d9b0 /include
parent2e56d933fd967a72d5ee4250e1cb6f9de29d936f (diff)
downloadlinux-d26a6635b24210791cf4b71fd861738270c8cc3c.tar.bz2
[media] v4l: Add AUTO option for the V4L2_CID_POWER_LINE_FREQUENCY control
V4L2_CID_POWER_LINE_FREQUENCY control allows applications to instruct a driver what is the power line frequency so an appropriate filter can be used by the device to cancel flicker by compensating the light intensity ripple. Currently in the menu we have entries for 50 Hz and 60 Hz and for entirely disabling the anti-flicker filter. However some devices are capable of automatically detecting the frequency, so add V4L2_CID_POWER_LINE_FREQUENCY_AUTO entry for them. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/videodev2.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 66945a6f628d..4b752d5ee80e 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1169,6 +1169,7 @@ enum v4l2_power_line_frequency {
V4L2_CID_POWER_LINE_FREQUENCY_DISABLED = 0,
V4L2_CID_POWER_LINE_FREQUENCY_50HZ = 1,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ = 2,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO = 3,
};
#define V4L2_CID_HUE_AUTO (V4L2_CID_BASE+25)
#define V4L2_CID_WHITE_BALANCE_TEMPERATURE (V4L2_CID_BASE+26)