commit 43565a0648e664744ac9201c199681451355edcc
author Kristian Høgsberg <krh@bitplanet.net> Fri Feb 13 20:56:52 2009 -0500
committer Dave Airlie <airlied@redhat.com> Fri Feb 20 12:21:13 2009 +1000
tree c5d5680b90aaed10e4f27b4e60e0a61cbb7d2c0c
parent a29f5ca3d691995266a4b1df313e32ff0509a03c

drm: Use spread spectrum when the bios tells us it's ok.

Lifted from the DDX modesetting.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/i915/intel_bios.c

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 4ca82a0..65be30d 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -135,6 +135,14 @@
 	if (general) {
 		dev_priv->int_tv_support = general->int_tv_support;
 		dev_priv->int_crt_support = general->int_crt_support;
+		dev_priv->lvds_use_ssc = general->enable_ssc;
+
+		if (dev_priv->lvds_use_ssc) {
+		  if (IS_I855(dev_priv->dev))
+		    dev_priv->lvds_ssc_freq = general->ssc_freq ? 66 : 48;
+		  else
+		    dev_priv->lvds_ssc_freq = general->ssc_freq ? 100 : 96;
+		}
 	}
 }