Commit b7cc1312 authored by Stylon Wang's avatar Stylon Wang Committed by Alex Deucher
Browse files

drm/amd/display: Expose internal display flag via debugfs 



[Why & How]
Add a per-connector debugfs entry to expose internal display flag,
which is indication that the display is "internally connected"
and not hotpluggable.

Signed-off-by: default avatarStylon Wang <stylon.wang@amd.com>
Reviewed-by: default avatarWayne Lin <Wayne.Lin@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 47c02af7

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

+19 −1
Original line number Diff line number Diff line
@@ -925,6 +925,22 @@ static int hdcp_sink_capability_show(struct seq_file *m, void *data) 
	return 0;

}

#endif



/*

 * Returns whether the connected display is internal and not hotpluggable.

 * Example usage: cat /sys/kernel/debug/dri/0/DP-1/internal_display

 */

static int internal_display_show(struct seq_file *m, void *data)

{

	struct drm_connector *connector = m->private;

	struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);

	struct dc_link *link = aconnector->dc_link;



	seq_printf(m, "Internal: %u\n", link->is_internal_display);



	return 0;

}



/* function description

 *

 * generic SDP message access for testing
@@ -2369,6 +2385,7 @@ DEFINE_SHOW_ATTRIBUTE(dp_lttpr_status); 
#ifdef CONFIG_DRM_AMD_DC_HDCP

DEFINE_SHOW_ATTRIBUTE(hdcp_sink_capability);

#endif

DEFINE_SHOW_ATTRIBUTE(internal_display);



static const struct file_operations dp_dsc_clock_en_debugfs_fops = {

	.owner = THIS_MODULE,
@@ -2600,7 +2617,8 @@ static const struct { 
} connector_debugfs_entries[] = {

		{"force_yuv420_output", &force_yuv420_output_fops},

		{"output_bpc", &output_bpc_fops},

		{"trigger_hotplug", &trigger_hotplug_debugfs_fops}

		{"trigger_hotplug", &trigger_hotplug_debugfs_fops},

		{"internal_display", &internal_display_fops}

};



void connector_debugfs_init(struct amdgpu_dm_connector *connector)