[PATCH 01/11] drm/komeda: Add komeda_build_display_data_flow

[james qian wang (Arm Technology China)]

This function builds a display output pipeline according to crtc_state.
And this change only added single pipeline support, the dual pipeline with
slave enabled data flow support will be added in the following change.

Signed-off-by: James (Qian) Wang <james.qian.wang@xxxxxxx>
---
 .../drm/arm/display/komeda/komeda_pipeline.h  |  3 +
 .../display/komeda/komeda_pipeline_state.c    | 72 +++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index c78edfc6ed5b..bc4ed1513348 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -408,11 +408,14 @@ void komeda_component_destroy(struct komeda_dev *mdev,
 
 struct komeda_plane_state;
 struct komeda_crtc_state;
+struct komeda_crtc;
 
 int komeda_build_layer_data_flow(struct komeda_layer *layer,
 				 struct komeda_component_output *dflow,
 				 struct komeda_plane_state *kplane_st,
 				 struct komeda_crtc_state *kcrtc_st,
 				 struct komeda_layer_viewport *vp);
+int komeda_build_display_data_flow(struct komeda_crtc *kcrtc,
+				   struct komeda_crtc_state *kcrtc_st);
 
 #endif /* _KOMEDA_PIPELINE_H_*/
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
index b98163211cfd..05386e9d1749 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -380,6 +380,51 @@ int komeda_compiz_validate(struct komeda_compiz *compiz,
 	return 0;
 }
 
+int komeda_improc_validate(struct komeda_improc *improc,
+			   struct komeda_component_output *input,
+			   struct komeda_component_output *slave_in,
+			   struct komeda_crtc_state *kcrtc_st)
+{
+	struct drm_crtc *crtc = kcrtc_st->base.crtc;
+	struct komeda_component_state *c_st;
+	struct komeda_improc_state *st;
+
+	c_st = komeda_component_get_state_and_set_user(&improc->base,
+			kcrtc_st->base.state, crtc, crtc);
+	if (IS_ERR(c_st))
+		return PTR_ERR(c_st);
+
+	st = to_improc_st(c_st);
+
+	pipeline_composition_size(kcrtc_st, &st->hsize, &st->vsize);
+
+	komeda_component_add_input(&st->base, input, 0);
+	komeda_component_set_output(input, &improc->base, 0);
+
+	return 0;
+}
+
+int komeda_timing_ctrlr_validate(struct komeda_timing_ctrlr *ctrlr,
+				 struct komeda_component_output *input,
+				 struct komeda_crtc_state *kcrtc_st)
+{
+	struct drm_crtc *crtc = kcrtc_st->base.crtc;
+	struct komeda_timing_ctrlr_state *st;
+	struct komeda_component_state *c_st;
+
+	c_st = komeda_component_get_state_and_set_user(&ctrlr->base,
+			kcrtc_st->base.state, crtc, crtc);
+	if (IS_ERR(c_st))
+		return PTR_ERR(c_st);
+
+	st = to_ctrlr_st(c_st);
+
+	komeda_component_add_input(&st->base, input, 0);
+	komeda_component_set_output(input, &ctrlr->base, 0);
+
+	return 0;
+}
+
 int komeda_build_layer_data_flow(struct komeda_layer *layer,
 				 struct komeda_component_output *dflow,
 				 struct komeda_plane_state *kplane_st,
@@ -406,3 +451,30 @@ int komeda_build_layer_data_flow(struct komeda_layer *layer,
 
 	return err;
 }
+
+/* build display output data flow, the data path is:
+ * compiz -> improc -> timing_ctrlr
+ */
+int komeda_build_display_data_flow(struct komeda_crtc *kcrtc,
+				   struct komeda_crtc_state *kcrtc_st)
+{
+	struct komeda_pipeline *master = kcrtc->master;
+	struct komeda_component_output m_dflow; /* master data flow */
+	int err;
+
+	memset(&m_dflow, 0, sizeof(m_dflow));
+
+	err = komeda_compiz_validate(master->compiz, &m_dflow, kcrtc_st, NULL);
+	if (err)
+		return err;
+
+	err = komeda_improc_validate(master->improc, &m_dflow, NULL, kcrtc_st);
+	if (err)
+		return err;
+
+	err = komeda_timing_ctrlr_validate(master->ctrlr, &m_dflow, kcrtc_st);
+	if (err)
+		return err;
+
+	return 0;
+}
-- 
2.17.1