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[media] v4l2-dv-timings: mention missing 'reduced blanking V2'

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The VESA standard added a version 2 of the reduced blanking formula.
Note in the comment that this is not yet supported by the v4l2_detect_cvt
function. Obviously this should be implemented eventually, but for now add
this as a reminder.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Hans Verkuil 2014-01-31 10:32:16 -03:00 committed by Mauro Carvalho Chehab
parent a1d16e0f59
commit 3be55e0407
1 changed files with 4 additions and 0 deletions
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drivers/media/v4l2-core/v4l2-dv-timings.c
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@ -324,6 +324,10 @@ EXPORT_SYMBOL_GPL(v4l2_print_dv_timings);
* This function will attempt to detect if the given values correspond to a
* valid CVT format. If so, then it will return true, and fmt will be filled
* in with the found CVT timings.
*
* TODO: VESA defined a new version 2 of their reduced blanking
* formula. Support for that is currently missing in this CVT
* detection function.
*/
bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
u32 polarities, struct v4l2_dv_timings *fmt)