drm: bridge: adv7511: Fix ADV7535 HPD enablement
authorJagan Teki <jagan@amarulasolutions.com>
Sun, 9 Jan 2022 17:29:49 +0000 (22:59 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 8 Apr 2022 12:23:23 +0000 (14:23 +0200)
commit66b805b63527769c96092dcb0513f619a60e2676
tree7092a4b20fc94d1f370a6bcc467cb4e2361744d7
parentc43b4106cfc59d4c0010a953419fc6ab97287da7
drm: bridge: adv7511: Fix ADV7535 HPD enablement

[ Upstream commit 3dbc84a595d17f64f14fcea00120d31e33e98880 ]

Existing HPD enablement logic is not compatible with ADV7535
bridge, thus any runtime plug-in of HDMI cable is not working
on these bridge designs.

Unlike other ADV7511 family of bridges, the ADV7535 require
HPD_OVERRIDE bit to set and reset for proper handling of HPD
functionality.

Fix it.

Fixes: 8501fe4b14a3 ("drm: bridge: adv7511: Add support for ADV7535")
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220109172949.168167-1-jagan@amarulasolutions.com
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/bridge/adv7511/adv7511.h
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c