1 files changed, 39 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index adcd6752f919..efc3184d8315 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -1021,6 +1021,22 @@ static i915_reg_t dss_ctl2_reg(const struct intel_crtc_state *crtc_state)
 	return is_pipe_dsc(crtc_state) ? ICL_PIPE_DSS_CTL2(pipe) : DSS_CTL2;
 }
 
+void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dss_ctl1_val = 0;
+
+	if (crtc_state->bigjoiner && !crtc_state->dsc.compression_enable) {
+		if (crtc_state->bigjoiner_slave)
+			dss_ctl1_val |= UNCOMPRESSED_JOINER_SLAVE;
+		else
+			dss_ctl1_val |= UNCOMPRESSED_JOINER_MASTER;
+
+		intel_de_write(dev_priv, dss_ctl1_reg(crtc_state), dss_ctl1_val);
+	}
+}
+
 void intel_dsc_enable(struct intel_encoder *encoder,
 		      const struct intel_crtc_state *crtc_state)
 {
@@ -1060,13 +1076,35 @@ void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state)
 	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 
-	if (!old_crtc_state->dsc.compression_enable)
+	if (!(old_crtc_state->dsc.compression_enable &&
+	      old_crtc_state->bigjoiner))
 		return;
 
 	intel_de_write(dev_priv, dss_ctl1_reg(old_crtc_state), 0);
 	intel_de_write(dev_priv, dss_ctl2_reg(old_crtc_state), 0);
 }
 
+void intel_uncompressed_joiner_get_config(struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	u32 dss_ctl1;
+
+	dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc_state));
+	if (dss_ctl1 & UNCOMPRESSED_JOINER_MASTER) {
+		crtc_state->bigjoiner = true;
+		if (!WARN_ON(INTEL_NUM_PIPES(dev_priv) == crtc->pipe + 1))
+			crtc_state->bigjoiner_linked_crtc =
+				intel_get_crtc_for_pipe(dev_priv, crtc->pipe + 1);
+	} else if (dss_ctl1 & UNCOMPRESSED_JOINER_SLAVE) {
+		crtc_state->bigjoiner = true;
+		crtc_state->bigjoiner_slave = true;
+		if (!WARN_ON(crtc->pipe == PIPE_A))
+			crtc_state->bigjoiner_linked_crtc =
+				intel_get_crtc_for_pipe(dev_priv, crtc->pipe - 1);
+	}
+}
+
 void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
 {
 	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;