fixes for 4.19

[thirdparty/kernel/stable-queue.git] / releases / 2.6.36.2 / i915-reprogram-power-monitoring-registers-on-resume.patch

From 48fcfc888b48ad49dd83faa107264bbfb0089cad Mon Sep 17 00:00:00 2001
From: Kyle McMartin <kyle@redhat.com>
Date: Wed, 3 Nov 2010 16:27:57 -0400
Subject: i915: reprogram power monitoring registers on resume

From: Kyle McMartin <kyle@redhat.com>

commit 48fcfc888b48ad49dd83faa107264bbfb0089cad upstream.

Fixes issue where i915_gfx_val was reporting values several
orders of magnitude higher than physically possible (without
leaving scorch marks on my thighs at least.)

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/gpu/drm/i915/i915_suspend.c |    4 +++-
 drivers/gpu/drm/i915/intel_drv.h    |    1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -862,8 +862,10 @@ int i915_restore_state(struct drm_device
 	/* Clock gating state */
 	intel_init_clock_gating(dev);
 
-	if (HAS_PCH_SPLIT(dev))
+	if (HAS_PCH_SPLIT(dev)) {
 		ironlake_enable_drps(dev);
+		intel_init_emon(dev);
+	}
 
 	/* Cache mode state */
 	I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -250,6 +250,7 @@ extern void intel_crtc_fb_gamma_get(stru
 extern void intel_init_clock_gating(struct drm_device *dev);
 extern void ironlake_enable_drps(struct drm_device *dev);
 extern void ironlake_disable_drps(struct drm_device *dev);
+extern void intel_init_emon(struct drm_device *dev);
 
 extern int intel_pin_and_fence_fb_obj(struct drm_device *dev,
 				      struct drm_gem_object *obj);