diff options
| author |   Stylon Wang <stylon.wang@amd.com> | 2021-04-07 18:14:55 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-04-28 23:35:50 -0400 |
| commit | b7cc1312c110f8760a3d3e8e41a6d84e32f71a61 (patch) | |
| tree | 2d5e278ab32b19d57887af9830ddcb461ef596d2 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | |
| parent | drm/amd/display: skip program clock when allow seamless boot (diff) | |
| download | linux-dev-b7cc1312c110f8760a3d3e8e41a6d84e32f71a61.tar.xz linux-dev-b7cc1312c110f8760a3d3e8e41a6d84e32f71a61.zip | |
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: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 529545045a3e..656bc8f00a42 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -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) |