Leo (Sunpeng) Li edf6ffe4f4 drm/amd/display: Read AUX channel even if only status byte is returned ... [Why] get_channel_status() can return 0 in returned_bytes, and report a successful operation result. This is because it prunes the first status byte out. This was preventing read_channel_reply() from being called (due to the faulty condition), and consequently preventing the AUX reply status from being set. [How] Fix the conditional so that it accounts for when get_channel_status() returns 0 bytes read. [Fixes] Fixes possible edid read failures during S3 resume, where we are now relying on DRM's DP AUX handling. This was an regression introduced by: Author: Harry Wentland <harry.wentland@amd.com> drm/amd/display: Return aux replies directly to DRM Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2018-07-13 14:50:52 -05:00
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amdgpu_dm	drm/amd/display: Add YCbCr420 only support for HDMI 4K@60	2018-07-13 14:50:29 -05:00
dc	drm/amd/display: Read AUX channel even if only status byte is returned	2018-07-13 14:50:52 -05:00
include	drm/amd/display: read DP sink and DP branch hardware and firmware revision from DPCD	2018-07-13 14:48:49 -05:00
modules	drm/amd/display: Use 2-factor allocator calls	2018-07-05 16:40:03 -05:00
Kconfig	drm/amdgpu/display: enable CONFIG_DRM_AMD_DC_DCN1_0 by default	2018-06-15 12:20:30 -05:00
Makefile	drm/amd: Remove inclusion of non-existing include directories	2018-02-26 23:09:38 -05:00
TODO	drm/amd/display: Convert remaining loggers off dc_logger	2018-07-13 14:48:42 -05:00