Hi, This series fixes so HDMI through the sii9234 MHL chip works when cable is hotplugged, by making the MHL chip use extcon cable detection functions. Patch 3, that actually implements the extcon parts, is heavily inspired by commit 688838442147 ("drm/bridge/sii8620: use micro-USB cable detection logic to detect MHL") by Maciej Purski.
Before these changes, HDMI only worked if cable was plugged in before booting. If no cable was connected, then wlr-randr still showed HDMI as connected, with 0x0 px, which confused at least some UIs (phosh) and caused problems: https://gitlab.gnome.org/World/Phosh/phosh/-/issues/828 Tested on exynos4412-i9305. Best regards, Henrik Grimler Signed-off-by: Henrik Grimler <hen...@grimler.se> --- Henrik Grimler (3): drm/bridge: sii9234: fix some typos in comments and messages drm/bridge: sii9234: use dev_err_probe where applicable drm/bridge: sii9234: use extcon cable detection logic to detect MHL drivers/gpu/drm/bridge/sii9234.c | 121 ++++++++++++++++++++++++++++++++------- 1 file changed, 100 insertions(+), 21 deletions(-) --- base-commit: ca2a6abdaee43808034cdb218428d2ed85fd3db8 change-id: 20231218-exynos4-sii9234-driver-d817d4b511d5 Best regards, -- Henrik Grimler <hen...@grimler.se>