diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 599d445f7ce9..d7cb6bf5712d 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -98,7 +98,7 @@ static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int cfb_pitch; int plane, i; - u32 fbc_ctl, fbc_ctl2; + u32 fbc_ctl; cfb_pitch = dev_priv->fbc.size / FBC_LL_SIZE; if (fb->pitches[0] < cfb_pitch) @@ -115,11 +115,15 @@ static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++) I915_WRITE(FBC_TAG + (i * 4), 0); - /* Set it up... */ - fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE; - fbc_ctl2 |= plane; - I915_WRITE(FBC_CONTROL2, fbc_ctl2); - I915_WRITE(FBC_FENCE_OFF, crtc->y); + if (IS_GEN4(dev)) { + u32 fbc_ctl2; + + /* Set it up... */ + fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE; + fbc_ctl2 |= plane; + I915_WRITE(FBC_CONTROL2, fbc_ctl2); + I915_WRITE(FBC_FENCE_OFF, crtc->y); + } /* enable it... */ fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC; |
