diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-04-09 13:28:10 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-05-12 19:50:00 +0200 |
| commit | a4565da8ae5fc9fe4186538870b4d12f461f008e (patch) | |
| tree | 5167c0791cd26ba21f49e7690094659a958a5f7d /drivers/gpu/drm/i915/intel_pm.c | |
| parent | 74e1ca8cf086bb3611dd430d920dc477370fe5c8 (diff) | |
| download | lwn-a4565da8ae5fc9fe4186538870b4d12f461f008e.tar.gz lwn-a4565da8ae5fc9fe4186538870b4d12f461f008e.zip | |
drm/i915/chv: Initial clock gating support for Cherryview
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>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 834c49c2beb7..7699d7a5660e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -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 = |