[PATCH v2 1/2] drm/i915/dc3co: Do the full calculation of DC3CO exit only once

[José Roberto de Souza]

This will calculaet the DC3CO exit delay only once per full modeset.

Cc: Imre Deak <imre.deak at intel.com>
Cc: Anshuman Gupta <anshuman.gupta at intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 7f4056057f0c..fdd7f93953b1 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -802,7 +802,9 @@ static void intel_psr_enable_locked(struct drm_i915_private *dev_priv,
 	dev_priv->psr.busy_frontbuffer_bits = 0;
 	dev_priv->psr.pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
 	dev_priv->psr.dc3co_enabled = !!crtc_state->dc3co_exitline;
-	dev_priv->psr.dc3co_exit_delay = intel_get_frame_time_us(crtc_state);
+	/* DC5/DC6 required idle frames = 6 */
+	val = usecs_to_jiffies(intel_get_frame_time_us(crtc_state) * 6);
+	dev_priv->psr.dc3co_exit_delay = val;
 	dev_priv->psr.transcoder = crtc_state->cpu_transcoder;
 
 	/*
@@ -1277,8 +1279,6 @@ static void
 tgl_dc3co_flush(struct drm_i915_private *dev_priv,
 		unsigned int frontbuffer_bits, enum fb_op_origin origin)
 {
-	u32 delay;
-
 	mutex_lock(&dev_priv->psr.lock);
 
 	if (!dev_priv->psr.dc3co_enabled)
@@ -1296,10 +1296,8 @@ tgl_dc3co_flush(struct drm_i915_private *dev_priv,
 		goto unlock;
 
 	tgl_psr2_enable_dc3co(dev_priv);
-	/* DC5/DC6 required idle frames = 6 */
-	delay = 6 * dev_priv->psr.dc3co_exit_delay;
 	mod_delayed_work(system_wq, &dev_priv->psr.idle_work,
-			 usecs_to_jiffies(delay));
+			 dev_priv->psr.dc3co_exit_delay);
 
 unlock:
 	mutex_unlock(&dev_priv->psr.lock);
-- 
2.25.0