Use the software method to switch different refresh rate for LVDS
---
 drivers/gpu/drm/i915/intel_display.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Index: linux-2.6/drivers/gpu/drm/i915/intel_display.c
===================================================================
--- linux-2.6.orig/drivers/gpu/drm/i915/intel_display.c	2009-12-28 13:42:18.000000000 +0800
+++ linux-2.6/drivers/gpu/drm/i915/intel_display.c	2009-12-28 22:05:12.000000000 +0800
@@ -3230,7 +3230,7 @@
 		intel_crtc->lowfreq_avail = true;
 		if (HAS_PIPE_CXSR(dev)) {
 			DRM_DEBUG_KMS("enabling CxSR downclocking\n");
-			pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
+			pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
 		}
 	} else {
 		I915_WRITE(fp_reg + 4, fp);
@@ -3928,7 +3928,7 @@
 	if (!dev_priv->lvds_downclock_avail)
 		return;
 
-	if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
+	if ((dpll & DISPLAY_RATE_SELECT_FPA1)) {
 		DRM_DEBUG_DRIVER("upclocking LVDS\n");
 
 		/* Unlock panel regs */
@@ -3971,7 +3971,7 @@
 	 * Since this is called by a timer, we should never get here in
 	 * the manual case.
 	 */
-	if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
+	if (intel_crtc->lowfreq_avail) {
 		DRM_DEBUG_DRIVER("downclocking LVDS\n");
 
 		/* Unlock panel regs */