media: vimc: Add vimc-streamer for stream control
commit adc589d2a20808fb99d46a78175cd023f2040338 upstream. Add a linear pipeline logic for the stream control. It's created by walking backwards on the entity graph. When the stream starts it will simply loop through the pipeline calling the respective process_frame function of each entity. Fixes: f2fe8906 ("vimc: Virtual Media Controller core, capture and sensor") Cc: stable@vger.kernel.org # for v4.20 Signed-off-by: NLucas A. M. Magalhães <lucmaga@gmail.com> Acked-by: NHelen Koike <helen.koike@collabora.com> Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: fixed small space-after-tab issue in the patch] Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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