[Intel-gfx] [PATCH 13/15] drm/i915/glk: Allow dotclock up to 2 * cdclk on geminilake

[Ander Conselvan de Oliveira]

Geminilake has double wide pipes so it can output two pixels per CD
clock.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 62cc390..7763c44 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5830,8 +5830,10 @@ static int intel_compute_max_dotclk(struct drm_i915_private *dev_priv)
 {
 	int max_cdclk_freq = dev_priv->max_cdclk_freq;
 
-	if (INTEL_INFO(dev_priv)->gen >= 9 ||
-	    IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
+	if (IS_GEMINILAKE(dev_priv))
+		return 2 * max_cdclk_freq;
+	else if (INTEL_INFO(dev_priv)->gen >= 9 ||
+		 IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
 		return max_cdclk_freq;
 	else if (IS_CHERRYVIEW(dev_priv))
 		return max_cdclk_freq*95/100;
@@ -6588,9 +6590,9 @@ static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
 
 static int glk_calc_cdclk(int max_pixclk)
 {
-	if (max_pixclk > 158400)
+	if (max_pixclk > 2 * 158400)
 		return 316800;
-	else if (max_pixclk > 79200)
+	else if (max_pixclk > 2 * 79200)
 		return 158400;
 	else
 		return 79200;
-- 
2.5.5