drm/msm/dpu: move needs_cdm setting to dpu_encoder_get_topology()

As a preparation for calling dpu_encoder_get_topology() from different
places, move the code setting topology->needs_cdm to that function
(instead of patching topology separately).

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/633395/
Link: https://lore.kernel.org/r/20250123-drm-dirty-modeset-v2-2-bbfd3a6cd1a4@linaro.org

1 files changed, 22 insertions, 19 deletions

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index aeec5a5ab8ff..de329761cdb6 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -652,8 +652,11 @@ static struct msm_display_topology dpu_encoder_get_topology(
 			struct dpu_kms *dpu_kms,
 			struct drm_display_mode *mode,
 			struct drm_crtc_state *crtc_state,
+			struct drm_connector_state *conn_state,
 			struct drm_dsc_config *dsc)
 {
+	struct msm_drm_private *priv = dpu_enc->base.dev->dev_private;
+	struct msm_display_info *disp_info = &dpu_enc->disp_info;
 	struct msm_display_topology topology = {0};
 	int i, intf_count = 0;
 
@@ -702,6 +705,23 @@ static struct msm_display_topology dpu_encoder_get_topology(
 		topology.num_intf = 1;
 	}
 
+	/*
+	 * Use CDM only for writeback or DP at the moment as other interfaces cannot handle it.
+	 * If writeback itself cannot handle cdm for some reason it will fail in its atomic_check()
+	 * earlier.
+	 */
+	if (disp_info->intf_type == INTF_WB && conn_state->writeback_job) {
+		struct drm_framebuffer *fb;
+
+		fb = conn_state->writeback_job->fb;
+
+		if (fb && MSM_FORMAT_IS_YUV(msm_framebuffer_format(fb)))
+			topology.needs_cdm = true;
+	} else if (disp_info->intf_type == INTF_DP) {
+		if (msm_dp_is_yuv_420_enabled(priv->dp[disp_info->h_tile_instance[0]], mode))
+			topology.needs_cdm = true;
+	}
+
 	return topology;
 }
 
@@ -749,9 +769,7 @@ static int dpu_encoder_virt_atomic_check(
 	struct dpu_kms *dpu_kms;
 	struct drm_display_mode *adj_mode;
 	struct msm_display_topology topology;
-	struct msm_display_info *disp_info;
 	struct dpu_global_state *global_state;
-	struct drm_framebuffer *fb;
 	struct drm_dsc_config *dsc;
 	int ret = 0;
 
@@ -765,7 +783,6 @@ static int dpu_encoder_virt_atomic_check(
 	DPU_DEBUG_ENC(dpu_enc, "\n");
 
 	priv = drm_enc->dev->dev_private;
-	disp_info = &dpu_enc->disp_info;
 	dpu_kms = to_dpu_kms(priv->kms);
 	adj_mode = &crtc_state->adjusted_mode;
 	global_state = dpu_kms_get_global_state(crtc_state->state);
@@ -776,22 +793,8 @@ static int dpu_encoder_virt_atomic_check(
 
 	dsc = dpu_encoder_get_dsc_config(drm_enc);
 
-	topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state, dsc);
-
-	/*
-	 * Use CDM only for writeback or DP at the moment as other interfaces cannot handle it.
-	 * If writeback itself cannot handle cdm for some reason it will fail in its atomic_check()
-	 * earlier.
-	 */
-	if (disp_info->intf_type == INTF_WB && conn_state->writeback_job) {
-		fb = conn_state->writeback_job->fb;
-
-		if (fb && MSM_FORMAT_IS_YUV(msm_framebuffer_format(fb)))
-			topology.needs_cdm = true;
-	} else if (disp_info->intf_type == INTF_DP) {
-		if (msm_dp_is_yuv_420_enabled(priv->dp[disp_info->h_tile_instance[0]], adj_mode))
-			topology.needs_cdm = true;
-	}
+	topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state, conn_state,
+					    dsc);
 
 	if (topology.needs_cdm && !dpu_enc->cur_master->hw_cdm)
 		crtc_state->mode_changed = true;