drm/i915/psr: Timestamps for PSR entry and exit interrupts.
Timestamps are useful for IGT tests that trigger PSR exit and/or wait for
PSR entry.
v2: Removed seqlock (Ville)
Removed erroneous warning in irq loop (Chris)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Jose Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180403212420.25007-4-dhinakaran.pandiyan@intel.com
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index a6c70ff..2f05f52 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2686,6 +2686,13 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
}
mutex_unlock(&dev_priv->psr.lock);
+ if (READ_ONCE(dev_priv->psr.debug)) {
+ seq_printf(m, "Last attempted entry at: %lld\n",
+ dev_priv->psr.last_entry_attempt);
+ seq_printf(m, "Last exit at: %lld\n",
+ dev_priv->psr.last_exit);
+ }
+
intel_runtime_pm_put(dev_priv);
return 0;
}