diff options
| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2013-04-17 18:15:49 -0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-05-10 21:56:53 +0200 |
| commit | 0a790cdbfc526890af7dc41515a563f09e427129 (patch) | |
| tree | 4313704bebd898aa4ca9b1e4d2bfbea4265773cb /drivers/gpu/drm/i915/intel_pm.c | |
| parent | 7dd23ba0899bd1a203cc1d6e7878d7dfc910a511 (diff) | |
drm/i915: implement WADPOClockGatingDisable for LPT
This should prevent mode set failures on LPT.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Pimp the w/a tag to fit into Damien's new scheme.]
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 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 28cec57e3f8..1a765723d37 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4093,6 +4093,11 @@ static void lpt_init_clock_gating(struct drm_device *dev) I915_WRITE(SOUTH_DSPCLK_GATE_D, I915_READ(SOUTH_DSPCLK_GATE_D) | PCH_LP_PARTITION_LEVEL_DISABLE); + + /* WADPOClockGatingDisable:hsw */ + I915_WRITE(_TRANSA_CHICKEN1, + I915_READ(_TRANSA_CHICKEN1) | + TRANS_CHICKEN1_DP0UNIT_GC_DISABLE); } static void lpt_suspend_hw(struct drm_device *dev) |