[Intel-gfx] [PATCH 13/14] drm/i915: Set DP M2/N2 equal to M1/N1 when not doing DRRS

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Make life simpler by always programming DP M2/N2.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_drrs.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
index c46fcf1e7596..27d0fbf0372e 100644
--- a/drivers/gpu/drm/i915/display/intel_drrs.c
+++ b/drivers/gpu/drm/i915/display/intel_drrs.c
@@ -74,10 +74,14 @@ intel_drrs_compute_config(struct intel_dp *intel_dp,
 			  int output_bpp, bool constant_n)
 {
 	struct intel_connector *connector = intel_dp->attached_connector;
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
 	int pixel_clock;
 
-	if (!can_enable_drrs(connector, pipe_config))
+	if (!can_enable_drrs(connector, pipe_config)) {
+		if (intel_cpu_transcoder_has_m2_n2(i915, pipe_config->cpu_transcoder))
+			pipe_config->dp_m2_n2 = pipe_config->dp_m_n;
 		return;
+	}
 
 	pipe_config->has_drrs = true;
 
-- 
2.34.1