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drm/amd/display: AUX will exit when HPD LOW detected

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This change shorten wait time when HPD LOW. With HPD LOW, without this
change, AUX routine delay is 450us. With this change, it is 42us.

Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hersen Wu
2018-04-23 19:21:45 -04:00
committed by Alex Deucher
parent f9430b235d
commit 73770ca53f
5 changed files with 41 additions and 8 deletions
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3
drivers/gpu/drm/amd/display/include/ddc_service_types.h
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@@ -40,7 +40,8 @@ enum ddc_result {
DDC_RESULT_FAILED_INCOMPLETE,
DDC_RESULT_FAILED_OPERATION,
DDC_RESULT_FAILED_INVALID_OPERATION,
DDC_RESULT_FAILED_BUFFER_OVERFLOW
DDC_RESULT_FAILED_BUFFER_OVERFLOW,
DDC_RESULT_FAILED_HPD_DISCON
};
enum ddc_service_type {