From 48fcfc888b48ad49dd83faa107264bbfb0089cad Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Wed, 3 Nov 2010 16:27:57 -0400 Subject: [PATCH] i915: reprogram power monitoring registers on resume 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 Reviewed-by: Jesse Barnes Cc: stable@kernel.org Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_suspend.c | 4 +++- drivers/gpu/drm/i915/intel_drv.h | 1 + 2 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 989c19d..454c064 100644 --- 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 *dev) /* 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); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 9af9f86..21551fe 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -296,6 +296,7 @@ extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, 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, -- 1.7.3.2