diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 00958399dcf..58f50ebdbef 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1365,6 +1365,32 @@ void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder) udelay(600); } +void intel_ddi_fdi_disable(struct drm_crtc *crtc) +{ + struct drm_i915_private *dev_priv = crtc->dev->dev_private; + struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); + uint32_t val; + + intel_ddi_post_disable(intel_encoder); + + val = I915_READ(_FDI_RXA_CTL); + val &= ~FDI_RX_ENABLE; + I915_WRITE(_FDI_RXA_CTL, val); + + val = I915_READ(_FDI_RXA_MISC); + val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK); + val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2); + I915_WRITE(_FDI_RXA_MISC, val); + + val = I915_READ(_FDI_RXA_CTL); + val &= ~FDI_PCDCLK; + I915_WRITE(_FDI_RXA_CTL, val); + + val = I915_READ(_FDI_RXA_CTL); + val &= ~FDI_RX_PLL_ENABLE; + I915_WRITE(_FDI_RXA_CTL, val); +} + static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder) { struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |