drm/i915: Improve PSR debugfs output

Add busy_frontbuffer_bits and locking.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 62ea6198a092..fc39610fe12d 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1892,10 +1892,15 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
 
         intel_runtime_pm_get(dev_priv);
 
+        mutex_lock(&dev_priv->psr.lock);
         seq_printf(m, "Sink_Support: %s\n", yesno(dev_priv->psr.sink_support));
         seq_printf(m, "Source_OK: %s\n", yesno(dev_priv->psr.source_ok));
         seq_printf(m, "Enabled: %s\n", yesno((bool)dev_priv->psr.enabled));
         seq_printf(m, "Active: %s\n", yesno(dev_priv->psr.active));
+        seq_printf(m, "Busy frontbuffer bits: 0x%03x\n",
+                   dev_priv->psr.busy_frontbuffer_bits);
+        seq_printf(m, "Re-enable work scheduled: %s\n",
+                   yesno(work_busy(&dev_priv->psr.work.work)));
 
         enabled = HAS_PSR(dev) &&
                 I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
@@ -1905,6 +1910,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
                 psrperf = I915_READ(EDP_PSR_PERF_CNT(dev)) &
                         EDP_PSR_PERF_CNT_MASK;
         seq_printf(m, "Performance_Counter: %u\n", psrperf);
+        mutex_unlock(&dev_priv->psr.lock);
 
         intel_runtime_pm_put(dev_priv);
         return 0;