[Intel-gfx] [PATCH 2/5] drm/i915: Fix GMBUSFREQ on vlv/chv

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

vlv_cdclk_freq is in kHz but we need MHz for the GMBUSFREQ divider.

This is a regression from:
 commit f8bf63fdcb1f82459dae7a3f22ee5ce92f3ea727
 Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
 Date:   Fri Jun 13 13:37:54 2014 +0300

    drm/i915: Kill duplicated cdclk readout code from i2c

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6e6f150..18b493f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4628,7 +4628,7 @@ static void vlv_update_cdclk(struct drm_device *dev)
 	 * BSpec erroneously claims we should aim for 4MHz, but
 	 * in fact 1MHz is the correct frequency.
 	 */
-	I915_WRITE(GMBUSFREQ_VLV, dev_priv->vlv_cdclk_freq);
+	I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->vlv_cdclk_freq, 1000));
 }
 
 /* Adjust CDclk dividers to allow high res or save power if possible */
-- 
2.0.4