This patch series fixes two issues in the Mediatek HDMI DDC v2 driver (mtk_hdmi_ddc_v2).
Patch 1 fixes a potential issue on transfer timeout cases to properly abort read/write transfers. Patch 2 fixes DDC communication errors that occur when getting or modifying display features with ddcutil with subcommands such as detect, getvcp or setvcp: ``` $ ddcutil getvcp 10 -b 4 # read brightness DDC communication failed for monitor on bus /dev/i2c-4 $ ddcutil setvcp 10 75 -b 4 # change brightness DDC communication failed for monitor on bus /dev/i2c-4 ``` These patches were tested on Mediatek Genio 510-EVK and 1200-EVK boards with a kernel based on next-20251205 tag plus devicetree patches to enable HDMI output. Signed-off-by: Louis-Alexis Eyraud <[email protected]> --- Louis-Alexis Eyraud (2): drm/mediatek: mtk_hdmi_ddc_v2: Add transfer abort on timeout cases drm/mediatek: mtk_hdmi_ddc_v2: Fix multi-byte writes drivers/gpu/drm/mediatek/mtk_hdmi_ddc_v2.c | 58 +++++++++++++++++------------- 1 file changed, 33 insertions(+), 25 deletions(-) --- base-commit: 4e5a9b630580faea139e9837b4fba666db6bd728 change-id: 20251204-mtk-hdmi-ddc-v2-fixes-b5d61fdea639 Best regards, -- Louis-Alexis Eyraud <[email protected]>
