[media] omap3isp: Introduce isp_video_check_external_subdevs()
isp_video_check_external_subdevs() will retrieve external subdev's bits-per-pixel and pixel rate for the use of other ISP subdevs at streamon time. isp_video_check_external_subdevs() is called after pipeline validation. Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi> Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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