diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index b2267249c1c0..1aec4257e296 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -365,6 +365,18 @@ void hsw_fdi_link_train(struct drm_crtc *crtc) DRM_ERROR("FDI link training failed!\n"); } +void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder) +{ + struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); + struct intel_digital_port *intel_dig_port = + enc_to_dig_port(&encoder->base); + + intel_dp->DP = intel_dig_port->saved_port_bits | + DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW; + intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count); + +} + static struct intel_encoder * intel_ddi_get_crtc_encoder(struct drm_crtc *crtc) { @@ -1015,12 +1027,8 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder) if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) { struct intel_dp *intel_dp = enc_to_intel_dp(encoder); - struct intel_digital_port *intel_dig_port = - enc_to_dig_port(encoder); - intel_dp->DP = intel_dig_port->saved_port_bits | - DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW; - intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count); + intel_ddi_init_dp_buf_reg(intel_encoder); intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); intel_dp_start_link_train(intel_dp); |