[PATCH] staging: bcm2835-camera: Add TODO for removing overlay support
stschake at gmail.com
Thu May 10 16:12:44 PDT 2018
The overlay code is non-functional since it relies on firmware control
of the HVS.
Signed-off-by: Stefan Schake <stschake at gmail.com>
Dave, does this match your understanding?
drivers/staging/vc04_services/bcm2835-camera/TODO | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/staging/vc04_services/bcm2835-camera/TODO b/drivers/staging/vc04_services/bcm2835-camera/TODO
index 0ab9e88..770fea6 100644
@@ -32,3 +32,11 @@ We should have VCHI create a platform device once it's initialized,
and have this driver bind to it, so that we automatically load the
v4l2 module after VCHI loads.
+5) Remove overlay support.
+We advertise support for a V4L2 overlay implemented through the
+ril.video_render component. This component is non-functional with an
+upstream kernel since the VC4 DRM driver controls the HVS, not the
+firmware. Once we have dma-buf support, the same functionality with
+improved control can be achieved through the DRM interface. We should
+therefore remove all V4L2 overlay functionality from the driver.
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