From 44905a27dd01f2bddd96664d0ab7da43a07f4d5a Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 2 May 2014 13:36:43 +1000 Subject: [PATCH] i915: split some DP modesetting code into a separate function this is just prep work for mst support. Reviewed-by: Todd Previte Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/intel_ddi.c | 18 +++++++++++++----- drivers/gpu/drm/i915/intel_drv.h | 1 + 2 files changed, 14 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); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index fa19744ed6c0..40086e1a4ee3 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -718,6 +718,7 @@ void intel_ddi_fdi_disable(struct drm_crtc *crtc); void intel_ddi_get_config(struct intel_encoder *encoder, struct intel_crtc_config *pipe_config); +void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder); /* intel_display.c */ const char *intel_output_name(int output); -- 2.20.1