[Intel-gfx] [Patch 1/5]: DRM/I915: Add the crt save/restore function for VT switch

[yakui_zhao]

Subject: Patch DRM/i915: Add the crt save/restore function for VT switch
From: Zhao Yakui <yakui.zhao at intel.com>

Add the crt save/restore function for VT switch

Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>

---
 drivers/gpu/drm/i915/intel_crt.c |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

Index: linux-2.6/drivers/gpu/drm/i915/intel_crt.c
===================================================================
--- linux-2.6.orig/drivers/gpu/drm/i915/intel_crt.c	2009-03-03 11:47:39.000000000 +0800
+++ linux-2.6/drivers/gpu/drm/i915/intel_crt.c	2009-03-03 18:00:44.000000000 +0800
@@ -61,6 +61,26 @@
 	I915_WRITE(ADPA, temp);
 }
 
+static void intel_crt_save(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 temp;
+
+	temp = I915_READ(ADPA);
+	dev_priv->saveADPA = temp;
+}
+
+static void intel_crt_restore(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 temp;
+
+	temp = dev_priv->saveADPA;
+	I915_WRITE(ADPA, temp);
+}
+
 static int intel_crt_mode_valid(struct drm_connector *connector,
 				struct drm_display_mode *mode)
 {
@@ -225,6 +245,8 @@
 };
 
 static const struct drm_connector_funcs intel_crt_connector_funcs = {
+	.save = intel_crt_save,
+	.restore = intel_crt_restore,
 	.detect = intel_crt_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = intel_crt_destroy,