[media] v4l2-dv-timings: mention missing 'reduced blanking V2'
authorHans Verkuil <hans.verkuil@cisco.com>
Fri, 31 Jan 2014 13:32:16 +0000 (10:32 -0300)
committerMauro Carvalho Chehab <m.chehab@samsung.com>
Tue, 4 Feb 2014 12:02:01 +0000 (10:02 -0200)
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>
drivers/media/v4l2-core/v4l2-dv-timings.c

index ee52b9f4a9444137dd28be70c1d752c258911258..41bf3f9b6ca6a1e46077e193599a14dee29afacf 100644 (file)
@@ -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)