drm/i915: Add state readout and checking for has_dp_encoder and dp_m_n
Add functions to read out the CPU and PCH transcoder M/N values,
and use them to fill out the pipe config dp_m_n information. And
while at it populate has_dp_encoder too.
Also refactor ironlake_get_fdi_m_n_config() to simply call the new
intel_cpu_transcoder_get_m_n() function.
v2: Remember the DDI
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index d5215e2..4918995 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1285,6 +1285,20 @@
default:
break;
}
+
+ switch (temp & TRANS_DDI_MODE_SELECT_MASK) {
+ case TRANS_DDI_MODE_SELECT_HDMI:
+ case TRANS_DDI_MODE_SELECT_DVI:
+ case TRANS_DDI_MODE_SELECT_FDI:
+ break;
+ case TRANS_DDI_MODE_SELECT_DP_SST:
+ case TRANS_DDI_MODE_SELECT_DP_MST:
+ pipe_config->has_dp_encoder = true;
+ intel_dp_get_m_n(intel_crtc, pipe_config);
+ break;
+ default:
+ break;
+ }
}
static void intel_ddi_destroy(struct drm_encoder *encoder)