[07/10] i915: split some DP modesetting code into a separate function

Commit Message

Dave Airlie May 12, 2014, 6:46 a.m. UTC

From: Dave Airlie <[e-mail]>

this is just prep work for mst support.

Signed-off-by: Dave Airlie <[e-mail]>
---
 drivers/gpu/drm/i915/intel_ddi.c | 20 +++++++++++++-------
 drivers/gpu/drm/i915/intel_drv.h |  1 +
 2 files changed, 14 insertions(+), 7 deletions(-)

Patch

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 0ad4e96..a5b8b76 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -364,6 +364,18 @@  void hsw_fdi_link_train(struct drm_crtc *crtc)
 	DRM_ERROR("FDI link training failed!\n");
 }
 
+void intel_ddi_mode_set_dp(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 void intel_ddi_mode_set(struct intel_encoder *encoder)
 {
 	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
@@ -378,13 +390,7 @@  static void intel_ddi_mode_set(struct intel_encoder *encoder)
 	crtc->eld_vld = false;
 	if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
 		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);
-
+		intel_ddi_mode_set_dp(encoder);
 		if (intel_dp->has_audio) {
 			DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
 					 pipe_name(crtc->pipe));
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b885df1..8e41cdc 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -683,6 +683,7 @@  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_mode_set_dp(struct intel_encoder *encoder);
 
 /* intel_display.c */
 const char *intel_output_name(int output);