diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 34c63459c484..7fae6917beab 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1266,7 +1266,7 @@ static void intel_enable_transcoder(struct drm_i915_private *dev_priv, enum pipe pipe) { int reg; - u32 val; + u32 val, pipeconf_val; /* PCH only available on ILK+ */ BUG_ON(dev_priv->info->gen < 5); @@ -1280,6 +1280,7 @@ static void intel_enable_transcoder(struct drm_i915_private *dev_priv, reg = TRANSCONF(pipe); val = I915_READ(reg); + pipeconf_val = I915_READ(PIPECONF(pipe)); if (HAS_PCH_IBX(dev_priv->dev)) { /* @@ -1287,8 +1288,15 @@ static void intel_enable_transcoder(struct drm_i915_private *dev_priv, * that in pipeconf reg. */ val &= ~PIPE_BPC_MASK; - val |= I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK; + val |= pipeconf_val & PIPE_BPC_MASK; } + + val &= ~TRANS_INTERLACE_MASK; + if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK) + val |= TRANS_INTERLACED; + else + val |= TRANS_PROGRESSIVE; + I915_WRITE(reg, val | TRANS_ENABLE); if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100)) DRM_ERROR("failed to enable transcoder %d\n", pipe); |