diff options
| author | Imre Deak <[email protected]> | 2024-06-10 19:49:33 +0300 |
|---|---|---|
| committer | Imre Deak <[email protected]> | 2024-06-13 21:26:49 +0300 |
| commit | d6bbb6e581743fa9f6a31346b3a6d147e8cd2560 (patch) | |
| tree | 990a70e27f86f734b6c00889d79a2bcd2b767667 | |
| parent | 09f08c6ccc04ff7530e0c4166c3ec4bf3565bcee (diff) | |
drm/i915/dp: Add debugfs entry to get the link retrain disabled state
Add a connector debugfs entry showing if link retraining is disabled.
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_link_training.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 4da550d6e0ff..1bc4ef84ff3b 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -1898,6 +1898,25 @@ DEFINE_DEBUGFS_ATTRIBUTE(i915_dp_force_link_retrain_fops, i915_dp_force_link_retrain_show, i915_dp_force_link_retrain_write, "%llu\n"); +static int i915_dp_link_retrain_disabled_show(struct seq_file *m, void *data) +{ + struct intel_connector *connector = to_intel_connector(m->private); + struct drm_i915_private *i915 = to_i915(connector->base.dev); + struct intel_dp *intel_dp = intel_connector_to_intel_dp(connector); + int err; + + err = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex); + if (err) + return err; + + seq_printf(m, "%s\n", str_yes_no(intel_dp->link.retrain_disabled)); + + drm_modeset_unlock(&i915->drm.mode_config.connection_mutex); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(i915_dp_link_retrain_disabled); + void intel_dp_link_training_debugfs_add(struct intel_connector *connector) { struct dentry *root = connector->base.debugfs_entry; @@ -1923,4 +1942,7 @@ void intel_dp_link_training_debugfs_add(struct intel_connector *connector) debugfs_create_file("i915_dp_force_link_retrain", 0644, root, connector, &i915_dp_force_link_retrain_fops); + + debugfs_create_file("i915_dp_link_retrain_disabled", 0444, root, + connector, &i915_dp_link_retrain_disabled_fops); } |