diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4732-drm-amd-display-Write-TEST_EDID_CHECKSUM_WRITE-for-E.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4732-drm-amd-display-Write-TEST_EDID_CHECKSUM_WRITE-for-E.patch | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4732-drm-amd-display-Write-TEST_EDID_CHECKSUM_WRITE-for-E.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4732-drm-amd-display-Write-TEST_EDID_CHECKSUM_WRITE-for-E.patch new file mode 100644 index 00000000..346d3558 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4732-drm-amd-display-Write-TEST_EDID_CHECKSUM_WRITE-for-E.patch @@ -0,0 +1,86 @@ +From 9c86b692e86bc47641c63bbc62b24142aaba2df3 Mon Sep 17 00:00:00 2001 +From: Mikita Lipski <mikita.lipski@amd.com> +Date: Thu, 17 May 2018 15:44:20 -0400 +Subject: [PATCH 4732/5725] drm/amd/display: Write TEST_EDID_CHECKSUM_WRITE for + EDID tests + +Extract edid's checksum and send it back for verification if EDID_TEST +is requested. + +Also added a flag for EDID checksum write in TEST_RESPONSE structure, +and simple spelling fix. + +Signed-off-by: Mikita Lipski <mikita.lipski@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + .../drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 28 ++++++++++++++++++++++ + drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 5 ++-- + 2 files changed, 31 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +index bd44935..dea49dc 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +@@ -497,6 +497,34 @@ enum dc_edid_status dm_helpers_read_local_edid( + DRM_ERROR("EDID err: %d, on connector: %s", + edid_status, + aconnector->base.name); ++ if (link->aux_mode) { ++ union test_request test_request = {0}; ++ union test_response test_response = {0}; ++ ++ dm_helpers_dp_read_dpcd(ctx, ++ link, ++ DP_TEST_REQUEST, ++ &test_request.raw, ++ sizeof(union test_request)); ++ ++ if (!test_request.bits.EDID_READ) ++ return edid_status; ++ ++ test_response.bits.EDID_CHECKSUM_WRITE = 1; ++ ++ dm_helpers_dp_write_dpcd(ctx, ++ link, ++ DP_TEST_EDID_CHECKSUM, ++ &sink->dc_edid.raw_edid[sink->dc_edid.length-1], ++ 1); ++ ++ dm_helpers_dp_write_dpcd(ctx, ++ link, ++ DP_TEST_RESPONSE, ++ &test_response.raw, ++ sizeof(test_response)); ++ ++ } + + return edid_status; + } +diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +index 90bccd5..da93ab4 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h ++++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h +@@ -430,7 +430,7 @@ union test_request { + struct { + uint8_t LINK_TRAINING :1; + uint8_t LINK_TEST_PATTRN :1; +- uint8_t EDID_REAT :1; ++ uint8_t EDID_READ :1; + uint8_t PHY_TEST_PATTERN :1; + uint8_t AUDIO_TEST_PATTERN :1; + uint8_t RESERVED :1; +@@ -443,7 +443,8 @@ union test_response { + struct { + uint8_t ACK :1; + uint8_t NO_ACK :1; +- uint8_t RESERVED :6; ++ uint8_t EDID_CHECKSUM_WRITE:1; ++ uint8_t RESERVED :5; + } bits; + uint8_t raw; + }; +-- +2.7.4 + |