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* drm_dp_cec.c: fix formatting typo: %pdH -> %phDHans Verkuil2018-07-281-1/+1
| | | | | | | | | This caused a kernel oops since %pdH interpreted the pointer as a struct file. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/f3720ddf-ec0f-cd22-46b6-720a5e2098f2@xs4all.nl
* drm: add support for DisplayPort CEC-Tunneling-over-AUXHans Verkuil2018-07-131-0/+428
This adds support for the DisplayPort CEC-Tunneling-over-AUX feature that is part of the DisplayPort 1.3 standard. Unfortunately, not all DisplayPort/USB-C to HDMI adapters with a chip that has this capability actually hook up the CEC pin, so even though a CEC device is created, it may not actually work. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180711132909.25409-2-hverkuil@xs4all.nl