Merge tag 'amd-drm-next-5.19-2022-04-15' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

amd-drm-next-5.19-2022-04-15:

amdgpu:
- USB-C updates
- GPUVM updates
- TMZ fixes for RV
- DCN 3.1 pstate fixes
- Display z state fixes
- RAS fixes
- Misc code cleanups and spelling fixes
- More DC FP rework
- GPUVM TLB handling rework
- Power management sysfs code cleanup
- Add RAS support for VCN
- Backlight fix
- Add unique id support for more asics
- Misc display updates
- SR-IOV fixes
- Extend CG and PG flags to 64 bits
- Enable VCN clk sysfs nodes for navi12

amdkfd:
- Fix IO link cleanup during device removal
- RAS fixes
- Retry fault fixes
- Asynchronously free events
- SVM fixes

radeon:
- Drop some dead code
- Misc code cleanups

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220415135144.5700-1-alexander.deucher@amd.com
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 37 insertions, 0 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 da17ece1a2c5..188039f14544 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
@@ -3491,6 +3491,40 @@ DEFINE_SHOW_ATTRIBUTE(mst_topo);
 DEFINE_DEBUGFS_ATTRIBUTE(visual_confirm_fops, visual_confirm_get,
 			 visual_confirm_set, "%llu\n");
 
+
+/*
+ * Sets the DC skip_detection_link_training debug option from the given string.
+ * Example usage: echo 1 > /sys/kernel/debug/dri/0/amdgpu_skip_detection_link_training
+ */
+static int skip_detection_link_training_set(void *data, u64 val)
+{
+	struct amdgpu_device *adev = data;
+
+	if (val == 0)
+		adev->dm.dc->debug.skip_detection_link_training = false;
+	else
+		adev->dm.dc->debug.skip_detection_link_training = true;
+
+	return 0;
+}
+
+/*
+ * Reads the DC skip_detection_link_training debug option value into the given buffer.
+ * Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_skip_detection_link_training
+ */
+static int skip_detection_link_training_get(void *data, u64 *val)
+{
+	struct amdgpu_device *adev = data;
+
+	*val = adev->dm.dc->debug.skip_detection_link_training;
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(skip_detection_link_training_fops,
+			 skip_detection_link_training_get,
+			 skip_detection_link_training_set, "%llu\n");
+
 /*
  * Dumps the DCC_EN bit for each pipe.
  * Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dcc_en
@@ -3584,6 +3618,9 @@ void dtn_debugfs_init(struct amdgpu_device *adev)
 	debugfs_create_file_unsafe("amdgpu_dm_visual_confirm", 0644, root, adev,
 				   &visual_confirm_fops);
 
+	debugfs_create_file_unsafe("amdgpu_dm_skip_detection_link_training", 0644, root, adev,
+				   &skip_detection_link_training_fops);
+
 	debugfs_create_file_unsafe("amdgpu_dm_dmub_tracebuffer", 0644, root,
 				   adev, &dmub_tracebuffer_fops);