Commit bd682a78 authored by Fangzhi Zuo's avatar Fangzhi Zuo Committed by Alex Deucher
Browse files

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



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

Force DP2 sequence with uncertified cable for testing purpose.

Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: default avatarWenjing Liu <Wenjing.Liu@amd.com>
Acked-by: default avatarStylon Wang <stylon.wang@amd.com>
Signed-off-by: default avatarFangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 05f8c2a8

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

+26 −0
Original line number Diff line number Diff line
@@ -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,