[PATCH 20/25] drm/amd/display: Add Replay residency in debugfs

[IVAN.LIPSKI at amd.com]

From: Ray Wu <ray.wu at amd.com>

[Why]
Users can access the replay residency to get PHY off percentage

[How]
Start capture residency:
sudo echo 1 /sys/kernel/debug/dri/0/eDP-1/replay_residency

Stop and Get replay residency:
sudo cat /sys/kernel/debug/dri/0/eDP-1/replay_residency

Reviewed-by: ChiaHsuan (Tom) Chung <chiahsuan.chung at amd.com>
Signed-off-by: Ray Wu <ray.wu at amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski at amd.com>
---
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 34 ++++++++++++++++++-
 1 file changed, 33 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 484691335fd6..f263e1a4537e 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
@@ -3106,6 +3106,35 @@ static int replay_get_state(void *data, u64 *val)
 	return 0;
 }
 
+/*
+ *  Start / Stop capture Replay residency
+ */
+static int replay_set_residency(void *data, u64 val)
+{
+	struct amdgpu_dm_connector *connector = data;
+	struct dc_link *link = connector->dc_link;
+	bool is_start = (val != 0);
+	u32 residency = 0;
+
+	link->dc->link_srv->edp_replay_residency(link, &residency, is_start, PR_RESIDENCY_MODE_PHY);
+	return 0;
+}
+
+/*
+ *  Read Replay residency
+ */
+static int replay_get_residency(void *data, u64 *val)
+{
+	struct amdgpu_dm_connector *connector = data;
+	struct dc_link *link = connector->dc_link;
+	u32 residency = 0;
+
+	link->dc->link_srv->edp_replay_residency(link, &residency, false, PR_RESIDENCY_MODE_PHY);
+	*val = (u64)residency;
+
+	return 0;
+}
+
 /*
  *  Read PSR state
  */
@@ -3325,7 +3354,8 @@ DEFINE_DEBUGFS_ATTRIBUTE(dmcub_trace_event_state_fops, dmcub_trace_event_state_g
 			 dmcub_trace_event_state_set, "%llu\n");
 
 DEFINE_DEBUGFS_ATTRIBUTE(replay_state_fops, replay_get_state, NULL, "%llu\n");
-
+DEFINE_DEBUGFS_ATTRIBUTE(replay_residency_fops, replay_get_residency, replay_set_residency,
+			 "%llu\n");
 DEFINE_DEBUGFS_ATTRIBUTE(psr_fops, psr_get, NULL, "%llu\n");
 DEFINE_DEBUGFS_ATTRIBUTE(psr_residency_fops, psr_read_residency, NULL,
 			 "%llu\n");
@@ -3503,6 +3533,8 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector)
 		debugfs_create_file("replay_capability", 0444, dir, connector,
 					&replay_capability_fops);
 		debugfs_create_file("replay_state", 0444, dir, connector, &replay_state_fops);
+		debugfs_create_file_unsafe("replay_residency", 0444, dir,
+					   connector, &replay_residency_fops);
 		debugfs_create_file_unsafe("psr_capability", 0444, dir, connector, &psr_capability_fops);
 		debugfs_create_file_unsafe("psr_state", 0444, dir, connector, &psr_fops);
 		debugfs_create_file_unsafe("psr_residency", 0444, dir,
-- 
2.43.0