From d26a6635b24210791cf4b71fd861738270c8cc3c Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Sun, 4 Sep 2011 19:08:54 -0300 Subject: [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 Signed-off-by: Kyungmin Park Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/controls.xml | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'Documentation/DocBook/media/v4l') diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml index 23fdf79f8cf..3bc5ee8b2c7 100644 --- a/Documentation/DocBook/media/v4l/controls.xml +++ b/Documentation/DocBook/media/v4l/controls.xml @@ -232,8 +232,9 @@ control is deprecated. New drivers and applications should use the Enables a power line frequency filter to avoid flicker. Possible values for enum v4l2_power_line_frequency are: V4L2_CID_POWER_LINE_FREQUENCY_DISABLED (0), -V4L2_CID_POWER_LINE_FREQUENCY_50HZ (1) and -V4L2_CID_POWER_LINE_FREQUENCY_60HZ (2). +V4L2_CID_POWER_LINE_FREQUENCY_50HZ (1), +V4L2_CID_POWER_LINE_FREQUENCY_60HZ (2) and +V4L2_CID_POWER_LINE_FREQUENCY_AUTO (3). V4L2_CID_HUE_AUTO -- cgit v1.2.3