From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Eliminate the partially duplicated DDI readout code from MST, and
instead just call intel_ddi_get_config(). As a nice bonus we get
more cross checking as intel_ddi_get_config() will populate
output_types based on the actual mode of the DDI port.

Additonally intel_ddi_get_config() must be changed to get the crtc
from the passed in crtc state rather than from the encoder->crtc link.
encoder->crtc really shouldn't be used anyway.

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c    |  2 +-
 drivers/gpu/drm/i915/intel_dp_mst.c | 44 +------------------------------------
 2 files changed, 2 insertions(+), 44 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 0123c4753cd4..e96b458d6592 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2507,7 +2507,7 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
                          struct intel_crtc_state *pipe_config)
 {
        struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
+       struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
        enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
        struct intel_digital_port *intel_dig_port;
        u32 temp, flags = 0;
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c 
b/drivers/gpu/drm/i915/intel_dp_mst.c
index cdffe7e93a71..e9584294dbbe 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -265,50 +265,8 @@ static void intel_dp_mst_enc_get_config(struct 
intel_encoder *encoder,
 {
        struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
        struct intel_digital_port *intel_dig_port = intel_mst->primary;
-       struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
-       struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
-       enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
-       u32 temp, flags = 0;
 
-       pipe_config->output_types |= BIT(INTEL_OUTPUT_DP_MST);
-
-       pipe_config->has_audio =
-               intel_ddi_is_audio_enabled(dev_priv, crtc);
-
-       temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
-       if (temp & TRANS_DDI_PHSYNC)
-               flags |= DRM_MODE_FLAG_PHSYNC;
-       else
-               flags |= DRM_MODE_FLAG_NHSYNC;
-       if (temp & TRANS_DDI_PVSYNC)
-               flags |= DRM_MODE_FLAG_PVSYNC;
-       else
-               flags |= DRM_MODE_FLAG_NVSYNC;
-
-       switch (temp & TRANS_DDI_BPC_MASK) {
-       case TRANS_DDI_BPC_6:
-               pipe_config->pipe_bpp = 18;
-               break;
-       case TRANS_DDI_BPC_8:
-               pipe_config->pipe_bpp = 24;
-               break;
-       case TRANS_DDI_BPC_10:
-               pipe_config->pipe_bpp = 30;
-               break;
-       case TRANS_DDI_BPC_12:
-               pipe_config->pipe_bpp = 36;
-               break;
-       default:
-               break;
-       }
-       pipe_config->base.adjusted_mode.flags |= flags;
-
-       pipe_config->lane_count =
-               ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
-
-       intel_dp_get_m_n(crtc, pipe_config);
-
-       intel_ddi_clock_get(&intel_dig_port->base, pipe_config);
+       intel_ddi_get_config(&intel_dig_port->base, pipe_config);
 }
 
 static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector)
-- 
2.13.6

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