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drm/amd/display: Trigger DP2 Sequence With Uncertified Cable

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DP2 sequence is triggered only if VESA certified cable is detected.

Force DP2 sequence with uncertified cable for testing purpose.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Fangzhi Zuo 2022-01-28 22:04:10 +08:00 committed by Alex Deucher
parent 05f8c2a87a
commit bd682a788c
1 changed files with 26 additions and 0 deletions
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26
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
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@ -3431,6 +3431,30 @@ static int dp_force_sst_get(void *data, u64 *val)
}
DEFINE_DEBUGFS_ATTRIBUTE(dp_set_mst_en_for_sst_ops, dp_force_sst_get,
dp_force_sst_set, "%llu\n");
/*
* Force DP2 sequence without VESA certified cable.
* Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_dm_dp_ignore_cable_id
*/
static int dp_ignore_cable_id_set(void *data, u64 val)
{
struct amdgpu_device *adev = data;
adev->dm.dc->debug.ignore_cable_id = val;
return 0;
}
static int dp_ignore_cable_id_get(void *data, u64 *val)
{
struct amdgpu_device *adev = data;
*val = adev->dm.dc->debug.ignore_cable_id;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(dp_ignore_cable_id_ops, dp_ignore_cable_id_get,
dp_ignore_cable_id_set, "%llu\n");
#endif
/*
@ -3549,6 +3573,8 @@ void dtn_debugfs_init(struct amdgpu_device *adev)
#if defined(CONFIG_DRM_AMD_DC_DCN)
debugfs_create_file("amdgpu_dm_dp_set_mst_en_for_sst", 0644, root, adev,
&dp_set_mst_en_for_sst_ops);
debugfs_create_file("amdgpu_dm_dp_ignore_cable_id", 0644, root, adev,
&dp_ignore_cable_id_ops);
#endif
debugfs_create_file_unsafe("amdgpu_dm_visual_confirm", 0644, root, adev,