Hi Maxime On Wed, 7 Jul 2021 at 10:23, Maxime Ripard <maxime@xxxxxxxxxx> wrote: > > Hi, > > This series aims at fixing a complete and silent hang when one tries to use CEC > while the display output is off. > > This can be tested with: > > echo off > /sys/class/drm/card0-HDMI-A-1/status > cec-ctl --tuner -p 1.0.0.0 > cec-compliance > > This series addresses it by making sure the HDMI controller is powered up as > soon as the CEC device is opened by the userspace. > > Let me know what you think, > Maxime > > Changes from v1: > - More fixes > - Added a big warning if we try to access a register while the device is > disabled. > - Fixed the pre_crtc_configure error path > > Maxime Ripard (5): > drm/vc4: hdmi: Make sure the controller is powered up during bind > drm/vc4: hdmi: Rework the pre_crtc_configure error handling > drm/vc4: hdmi: Split the CEC disable / enable functions in two > drm/vc4: hdmi: Make sure the device is powered with CEC > drm/vc4: hdmi: Warn if we access the controller while disabled Comment made on patch 1. Patches 2-5: Reviewed-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> Dave > > drivers/gpu/drm/vc4/vc4_hdmi.c | 123 +++++++++++++++++++--------- > drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 6 ++ > 2 files changed, 89 insertions(+), 40 deletions(-) > > -- > 2.31.1 >
