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From: Wayne Lin <Wayne.Lin@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: Stylon Wang <stylon.wang@amd.com>,
	Eryk.Brol@amd.com, Sunpeng.Li@amd.com, Harry.Wentland@amd.com,
	Qingqing.Zhuo@amd.com, Rodrigo.Siqueira@amd.com,
	Anson.Jacob@amd.com, Aurabindo.Pillai@amd.com,
	Bhawanpreet.Lakha@amd.com, bindu.r@amd.com
Subject: [PATCH 05/16] drm/amd/display: Expose internal display flag via debugfs
Date: Fri, 23 Apr 2021 10:37:03 +0800	[thread overview]
Message-ID: <20210423023714.22044-6-Wayne.Lin@amd.com> (raw)
In-Reply-To: <20210423023714.22044-1-Wayne.Lin@amd.com>

From: Stylon Wang <stylon.wang@amd.com>

[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>
---
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 20 ++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

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)
-- 
2.17.1

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  parent reply	other threads:[~2021-04-23  2:40 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-23  2:36 [PATCH 00/16] DC Patches April 23, 2021 Wayne Lin
2021-04-23  2:36 ` [PATCH 01/16] drm/amd/display: Add new case to get spread spectrum info Wayne Lin
2021-04-23  2:37 ` [PATCH 02/16] drm/amd/display: fix HDCP reset sequence on reinitialize Wayne Lin
2021-04-23  2:37 ` [PATCH 03/16] drm/amd/display: Revert wait vblank on update dpp clock Wayne Lin
2021-04-23  2:37 ` [PATCH 04/16] drm/amd/display: skip program clock when allow seamless boot Wayne Lin
2021-04-23  2:37 ` Wayne Lin [this message]
2021-04-23  2:37 ` [PATCH 06/16] drm/amd/display: ddc resource data need to be initialized Wayne Lin
2021-04-23  2:37 ` [PATCH 07/16] drm/amd/display: Added multi instance support for ABM Wayne Lin
2021-04-23  2:37 ` [PATCH 08/16] drm/amd/display: Fix BSOD with NULL check Wayne Lin
2021-04-23  2:37 ` [PATCH 09/16] drm/amd/display: Add new DP_SEC registers for programming SDP Line number Wayne Lin
2021-04-23  2:37 ` [PATCH 10/16] drm/amd/display: Clear MASTER_UPDATE_LOCK_DB_EN when disable doublebuffer lock Wayne Lin
2021-04-23  2:37 ` [PATCH 11/16] drm/amd/display: fix wrong statement in mst hpd debugfs Wayne Lin
2021-04-23  2:37 ` [PATCH 12/16] drm/amd/display: take max dsc stream bandwidth overhead into account Wayne Lin
2021-04-23  2:37 ` [PATCH 13/16] drm/amd/display: avoid to authentication when DEVICE_COUNT=0 Wayne Lin
2021-04-23  2:37 ` [PATCH 14/16] drm/amd/display: Add SE_DCN3_REG_LIST for control SDP num Wayne Lin
2021-04-23  2:37 ` [PATCH 15/16] drm/amd/display: [FW Promotion] Release 0.0.63 Wayne Lin
2021-04-23  2:37 ` [PATCH 16/16] drm/amd/display: 3.2.133 Wayne Lin
2021-04-23 19:36 ` [PATCH 00/16] DC Patches April 23, 2021 Wheeler, Daniel

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