Hi From: Douglas Anderson <dianders@xxxxxxxxxxxx> Date: Thu, May 2, 2019 at 3:38 PM To: Heiko Stuebner, Sandy Huang, Andrzej Hajda, Laurent Pinchart Cc: <linux-rockchip@xxxxxxxxxxxxxxxxxxx>, Neil Armstrong, <mka@xxxxxxxxxxxx>, Sean Paul, Douglas Anderson, Zheng Yang, Sam Ravnborg, <dri-devel@xxxxxxxxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, Ville Syrjälä, David Airlie, Jernej Skrabec, Daniel Vetter > On Rockchip rk3288-based Chromebooks when you do a suspend/resume > cycle: > > 1. You lose the ability to detect an HDMI device being plugged in. > > 2. If you're using the i2c bus built in to dw_hdmi then it stops > working. > > Let's add a hook to the core dw-hdmi driver so that we can call it in > dw_hdmi-rockchip in the next commit. > > NOTE: the exact set of steps I've done here in resume come from > looking at the normal dw_hdmi init sequence in upstream Linux plus the > sequence that we did in downstream Chrome OS 3.14. Testing show that > it seems to work, but if an extra step is needed or something here is > not needed we could improve it. > > Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx> > --- > > drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 21 +++++++++++++++++++++ > include/drm/bridge/dw_hdmi.h | 3 +++ > 2 files changed, 24 insertions(+) Did anyone have any thoughts on this patch series? Thanks! :-) -Doug _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
