[PATCH v2 6/6] drm/i915/alpm: Add debugfs for LOBF

[Animesh Manna <animesh.manna@xxxxxxxxx>]

For validation purpose add debugfs for LOBF.

Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_alpm.c     | 47 +++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_alpm.h     |  2 +
 .../drm/i915/display/intel_display_debugfs.c  |  2 +
 3 files changed, 51 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c
index ae894c85233c..21dfc06952d7 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.c
+++ b/drivers/gpu/drm/i915/display/intel_alpm.c
@@ -339,3 +339,50 @@ void intel_alpm_configure(struct intel_dp *intel_dp)
 {
 	lnl_alpm_configure(intel_dp);
 }
+
+static int i915_edp_lobf_support_show(struct seq_file *m, void *data)
+{
+	struct intel_connector *connector = m->private;
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+
+	seq_printf(m, "LOBF support: = %s",
+		   str_yes_no(intel_dp->lobf_supported));
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(i915_edp_lobf_support);
+
+static int i915_edp_lobf_status_show(struct seq_file *m, void *data)
+{
+	struct intel_connector *connector = m->private;
+	struct intel_dp *intel_dp = intel_attached_dp(connector);
+	const char *status;
+
+	if (intel_dp->lobf_enabled)
+		status = "enabled";
+	else
+		status = "disabled";
+
+	seq_printf(m, "LOBF: %s\n", status);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(i915_edp_lobf_status);
+
+void intel_alpm_lobf_debugfs_add(struct intel_connector *connector)
+{
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
+	struct dentry *root = connector->base.debugfs_entry;
+
+	if (DISPLAY_VER(i915) >= 20 &&
+	    connector->base.connector_type != DRM_MODE_CONNECTOR_eDP)
+		return;
+
+	debugfs_create_file("i915_edp_lobf_supported", 0444, root,
+			    connector, &i915_edp_lobf_support_fops);
+
+	debugfs_create_file("i915_edp_lobf_status", 0444, root,
+			    connector, &i915_edp_lobf_status_fops);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.h b/drivers/gpu/drm/i915/display/intel_alpm.h
index c341d2c2b7f7..66e81ed8b2fb 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.h
+++ b/drivers/gpu/drm/i915/display/intel_alpm.h
@@ -11,6 +11,7 @@
 struct intel_dp;
 struct intel_crtc_state;
 struct drm_connector_state;
+struct intel_connector;
 
 bool intel_dp_get_aux_less_alpm_status(struct intel_dp *intel_dp);
 bool intel_alpm_compute_params(struct intel_dp *intel_dp,
@@ -19,5 +20,6 @@ void intel_alpm_compute_lobf_config(struct intel_dp *intel_dp,
 				    struct intel_crtc_state *crtc_state,
 				    struct drm_connector_state *conn_state);
 void intel_alpm_configure(struct intel_dp *intel_dp);
+void intel_alpm_lobf_debugfs_add(struct intel_connector *connector);
 
 #endif
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index 0feffe8d4e45..ba1530149836 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -13,6 +13,7 @@
 #include "i915_debugfs.h"
 #include "i915_irq.h"
 #include "i915_reg.h"
+#include "intel_alpm.h"
 #include "intel_crtc.h"
 #include "intel_de.h"
 #include "intel_crtc_state_dump.h"
@@ -1542,6 +1543,7 @@ void intel_connector_debugfs_add(struct intel_connector *connector)
 	intel_drrs_connector_debugfs_add(connector);
 	intel_pps_connector_debugfs_add(connector);
 	intel_psr_connector_debugfs_add(connector);
+	intel_alpm_lobf_debugfs_add(connector);
 
 	if (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
 	    connector_type == DRM_MODE_CONNECTOR_HDMIA ||
-- 
2.29.0