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drm/i915/bdw: Clock gating init

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Clock gating init is really a catch all function for registers we need
to write early in loading the driver.

Atm just the bare metal stuff we need, more will surely come.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2013-11-02 21:07:06 -07:00 committed by Daniel Vetter
parent 8897644a6d
commit 1020a5c2dc
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/i915/intel_pm.c
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@ -5181,6 +5181,15 @@ static void lpt_suspend_hw(struct drm_device *dev)
}
}
static void gen8_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
I915_WRITE(WM3_LP_ILK, 0);
I915_WRITE(WM2_LP_ILK, 0);
I915_WRITE(WM1_LP_ILK, 0);
}
static void haswell_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@ -5833,6 +5842,8 @@ void intel_init_pm(struct drm_device *dev)
dev_priv->display.update_wm = NULL;
}
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
dev_priv->display.update_wm = NULL;
} else if (IS_VALLEYVIEW(dev)) {