[Intel-gfx] [DRM/I915]: Restore the modeset for every activated CRTC

[yakui.zhao at intel.com]

From: Zhao Yakui <yakui.zhao at intel.com>

Restore the modeset for every activated CRTC in course of resume.
This is realized by calling the function of drm_helper_resume_force_mode.
Note: it is meaningful only for the KMS mode.

Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c |    5 +++++
 1 file changed, 5 insertions(+)

Index: linux-2.6/drivers/gpu/drm/i915/i915_drv.c
===================================================================
--- linux-2.6.orig/drivers/gpu/drm/i915/i915_drv.c	2009-07-02 14:24:44.000000000 +0800
+++ linux-2.6/drivers/gpu/drm/i915/i915_drv.c	2009-07-02 14:25:52.000000000 +0800
@@ -35,6 +35,7 @@
 
 #include "drm_pciids.h"
 #include <linux/console.h>
+#include "drm_crtc_helper.h"
 
 static unsigned int i915_modeset = -1;
 module_param_named(modeset, i915_modeset, int, 0400);
@@ -115,6 +116,10 @@
 
 		drm_irq_install(dev);
 	}
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		/* Resume the modeset for every activated CRTC */
+		drm_helper_resume_force_mode(dev);
+	}
 
 	return ret;
 }