The MSM HDMI driver is plagued with the long-standing bug. If HDMI cable is disconnected, in most of the cases cable reconnection will not be detected properly. We have been carrying the patch from [1] in our integration tree for ages. The time has come to fix the long-standing bug and implement proper HPD handling. This series was tested on msm8996 and apq8064 boards. On APQ8064 in some rare cases I get the backtrace logged at [2]. It is unclear if it is a result of this series or not. I'll investigate it further later on. [1] https://lore.kernel.org/linux-arm-msm/20171027105732.19235-2-architt@xxxxxxxxxxxxxx/ [2] https://gitlab.freedesktop.org/drm/msm/-/issues/27 Dmitry Baryshkov (15): drm/msm/hdmi: move the alt_iface clock to the hpd list drm/msm/hdmi: simplify extp clock handling drm/msm/hdmi: correct indentation of HDMI bridge functions drm/msm/hdmi: switch to atomic_pre_enable/post_disable drm/msm/hdmi: set infoframes on all pre_enable calls drm/msm/hdmi: drop clock frequency assignment drm/msm/hdmi: switch to clk_bulk API drm/msm/hdmi: switch to pm_runtime_resume_and_get() drm/msm/hdmi: add runtime PM calls to DDC transfer function drm/msm/hdmi: implement proper runtime PM handling drm/msm/hdmi: rename hpd_clks to pwr_clks drm/msm/hdmi: expand the HDMI_CFG macro drm/msm/hdmi: drop hpd-gpios support drm/msm/hdmi: ensure that HDMI is one if HPD is requested drm/msm/hdmi: wire in hpd_enable/hpd_disable bridge ops drivers/gpu/drm/msm/hdmi/hdmi.c | 142 ++++++++++++------------- drivers/gpu/drm/msm/hdmi/hdmi.h | 26 ++--- drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 91 ++++++++-------- drivers/gpu/drm/msm/hdmi/hdmi_hpd.c | 141 +++++------------------- drivers/gpu/drm/msm/hdmi/hdmi_i2c.c | 14 ++- drivers/gpu/drm/msm/hdmi/hdmi_phy.c | 6 +- 6 files changed, 160 insertions(+), 260 deletions(-) -- 2.39.2
