[Intel-gfx] [PATCH 4/4] drm/i915/bxt: Use the bypass frequency if there are no active pipes.

[Maarten Lankhorst]

Now that pixel clock is set to 0 when there are no active pipes it's
easy to set the bypass frequency for this case.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 178a042f917e..8a825f24ce51 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5972,7 +5972,6 @@ static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
 	/*
 	 * FIXME:
 	 * - remove the guardband, it's not needed on BXT
-	 * - set 19.2MHz bypass frequency if there are no active pipes
 	 */
 	if (max_pixclk > 576000*9/10)
 		return 624000;
@@ -5982,8 +5981,10 @@ static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
 		return 384000;
 	else if (max_pixclk > 144000*9/10)
 		return 288000;
-	else
+	else if (max_pixclk)
 		return 144000;
+	else
+		return 19200;
 }
 
 /* Compute the max pixel clock for new configuration. Uses atomic state if
-- 
2.1.0