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drm/i915/chv: Initial clock gating support for Cherryview

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CHV clock gating isn't identical to VLV, so add a new function
for it. This is only a start, and further changes are needed as
the details become available.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-04-09 13:28:10 +03:00 committed by Daniel Vetter
parent 74e1ca8cf0
commit a4565da8ae
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/i915/intel_pm.c
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@ -5335,6 +5335,15 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS);
}
static void cherryview_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
I915_WRITE(DSPCLK_GATE_D, VRHUNIT_CLOCK_GATE_DISABLE);
I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE);
}
static void g4x_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@ -6270,6 +6279,10 @@ void intel_init_pm(struct drm_device *dev)
dev_priv->display.init_clock_gating = haswell_init_clock_gating;
else if (INTEL_INFO(dev)->gen == 8)
dev_priv->display.init_clock_gating = gen8_init_clock_gating;
} else if (IS_CHERRYVIEW(dev)) {
dev_priv->display.update_wm = valleyview_update_wm;
dev_priv->display.init_clock_gating =
cherryview_init_clock_gating;
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->display.update_wm = valleyview_update_wm;
dev_priv->display.init_clock_gating =