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i915: reprogram power monitoring registers on resume

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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>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Kyle McMartin 2010-11-03 16:27:57 -04:00 committed by Chris Wilson
parent 5588978882
commit 48fcfc888b
2 changed files with 4 additions and 1 deletions
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4
drivers/gpu/drm/i915/i915_suspend.c
View file

@ -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);

1
drivers/gpu/drm/i915/intel_drv.h
View file

@ -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,