[PATCH] drm/i915: Fix bigjoiner case for DP2.0

[vsrini4 <vidya.srinivas@xxxxxxxxx>]

Patch calculates bigjoiner pipes in mst compute.
Patch also passes bigjoiner bool to validate plane
max size.

Signed-off-by: vsrini4 <vidya.srinivas@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index e3f176a093d2..f499ce39b2a8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -308,6 +308,7 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
 				       struct drm_connector_state *conn_state)
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
 	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
 	struct intel_dp *intel_dp = &intel_mst->primary->dp;
 	const struct drm_display_mode *adjusted_mode =
@@ -318,6 +319,10 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
 	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
 		return -EINVAL;
 
+	if (intel_dp_need_bigjoiner(intel_dp, adjusted_mode->crtc_hdisplay,
+				    adjusted_mode->crtc_clock))
+		pipe_config->bigjoiner_pipes = GENMASK(crtc->pipe + 1, crtc->pipe);
+
 	pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
 	pipe_config->has_pch_encoder = false;
@@ -936,12 +941,6 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 	if (ret)
 		return ret;
 
-	if (mode_rate > max_rate || mode->clock > max_dotclk ||
-	    drm_dp_calc_pbn_mode(mode->clock, min_bpp, false) > port->full_pbn) {
-		*status = MODE_CLOCK_HIGH;
-		return 0;
-	}
-
 	if (mode->clock < 10000) {
 		*status = MODE_CLOCK_LOW;
 		return 0;
@@ -957,6 +956,12 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 		max_dotclk *= 2;
 	}
 
+	if (mode_rate > max_rate || mode->clock > max_dotclk ||
+	    drm_dp_calc_pbn_mode(mode->clock, min_bpp, false) > port->full_pbn) {
+		*status = MODE_CLOCK_HIGH;
+		return 0;
+	}
+
 	if (DISPLAY_VER(dev_priv) >= 10 &&
 	    drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd)) {
 		/*
@@ -994,7 +999,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
 	if (mode_rate > max_rate && !dsc)
 		return MODE_CLOCK_HIGH;
 
-	*status = intel_mode_valid_max_plane_size(dev_priv, mode, false);
+	*status = intel_mode_valid_max_plane_size(dev_priv, mode, bigjoiner);
 	return 0;
 }
 
-- 
2.33.0