diff options
| author | Eric Anholt <eric@anholt.net> | 2010-03-18 13:21:14 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-03-18 16:48:01 -0700 |
| commit | 8956c8bba5b11b3d3aec000e6c6184943011a8d4 (patch) | |
| tree | e3e712d6c58108b8937827f5c3cdecc3ae8f5afc /drivers/gpu/drm/i915/intel_display.c | |
| parent | 66f6ff09ff67c45919b336395c4d7d0ed3a97edc (diff) | |
drm/i915: Set up the documented clock gating on Sandybridge and Ironlake.
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0e2c5dafd9d..58fc7fa0eb1 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4717,6 +4717,20 @@ void intel_init_clock_gating(struct drm_device *dev) * specs, but enable as much else as we can. */ if (HAS_PCH_SPLIT(dev)) { + uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE; + + if (IS_IRONLAKE(dev)) { + /* Required for FBC */ + dspclk_gate |= DPFDUNIT_CLOCK_GATE_DISABLE; + /* Required for CxSR */ + dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE; + + I915_WRITE(PCH_3DCGDIS0, + MARIUNIT_CLOCK_GATE_DISABLE | + SVSMUNIT_CLOCK_GATE_DISABLE); + } + + I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate); return; } else if (IS_G4X(dev)) { uint32_t dspclk_gate; |