From: Bhanuprakash Modem <bhanuprakash.mo...@intel.com>
[Why]
It's useful to know the min and max vrr range for IGT testing.
[How]
Expose the min and max vfreq for the connector via a debugfs file
on the connector, "i915_vrr_info".
Example usage: cat /sys/kernel/debug/dri/0/DP-1/i915_vrr_info
v2:
* Fix the typo in max_vfreq (Manasi)
* Change the name of node to i915_vrr_info so we can add
other vrr info for more debug info (Manasi)
* Change the VRR capable to display Yes or No (Manasi)
* Fix indentation checkpatch errors (Manasi)
Signed-off-by: Bhanuprakash Modem <bhanuprakash.mo...@intel.com>
Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Tested-by: Manasi Navare <manasi.d.nav...@intel.com>
---
.../drm/i915/display/intel_display_debugfs.c | 22 ++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_dp.c | 4 +++-
2 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index 9f736420d83f..c10b97ac0482 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -2086,6 +2086,21 @@ static const struct file_operations
i915_dsc_fec_support_fops = {
.write = i915_dsc_fec_support_write
};
+static int i915_vrr_info_show(struct seq_file *m, void *data)
+{
+ struct drm_connector *connector = m->private;
+
+ if (connector->status != connector_status_connected)
+ return -ENODEV;
+
+ seq_printf(m, "Vrr_capable: %s\n",
yesno(intel_dp_is_vrr_capable(connector)));
+ seq_printf(m, "Min: %u\n",
(u8)connector->display_info.monitor_range.min_vfreq);
+ seq_printf(m, "Max: %u\n",
(u8)connector->display_info.monitor_range.max_vfreq);
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_vrr_info);
+
/**
* intel_connector_debugfs_add - add i915 specific connector debugfs files
* @connector: pointer to a registered drm_connector
@@ -2120,9 +2135,14 @@ int intel_connector_debugfs_add(struct drm_connector
*connector)
if (INTEL_GEN(dev_priv) >= 10 &&
(connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
- connector->connector_type == DRM_MODE_CONNECTOR_eDP))
+ connector->connector_type == DRM_MODE_CONNECTOR_eDP)) {
debugfs_create_file("i915_dsc_fec_support", S_IRUGO, root,
connector, &i915_dsc_fec_support_fops);
+ if (INTEL_GEN(dev_priv) >= 12)
+ debugfs_create_file("i915_vrr_info", S_IRUGO,
+ root, connector,
&i915_vrr_info_fops);
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
b/drivers/gpu/drm/i915/display/intel_dp.c
index 12a9a8ed6a90..e579a2ff0b63 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -6210,9 +6210,11 @@ static int intel_dp_get_modes(struct drm_connector
*connector)
if (ret)
return ret;
- if (intel_dp_is_vrr_capable(connector))
+ if (intel_dp_is_vrr_capable(connector)) {
drm_connector_set_vrr_capable_property(connector,
true);
+ DRM_DEBUG_KMS("\n VRR Debug: Setting VRR prop to true");
+ }
}
/* if eDP has no EDID, fall back to fixed mode */
--
2.19.1
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