[PATCH v2 20/25] drm/mediatek: add ovl0/ovl0_2l usecase

[yongqiang.niu]

From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>

This patch add ovl0/ovl0_2l usecase
in ovl->ovl0_2l direct link usecase:
1. the crtc support layer number will 4+2
2. ovl0_2l background color input select ovl0 when crtc init
and disable it when crtc finish
3. config ovl0_2l layer, if crtc config layer number is
bigger than ovl0 support layers(max is 4)

Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 38 +++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 11e3404..0f97ee3 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -283,6 +283,13 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
 
 	for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 		struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[i];
+		enum mtk_ddp_comp_id prev;
+
+		if (i > 0)
+			prev = mtk_crtc->ddp_comp[i - 1]->id;
+		else
+			prev = DDP_COMPONENT_ID_MAX;
+		mtk_ddp_comp_bgclr_in_on(comp, prev);
 
 		mtk_ddp_comp_config(comp, width, height, vrefresh, bpc);
 		mtk_ddp_comp_start(comp);
@@ -292,9 +299,18 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
 	for (i = 0; i < mtk_crtc->layer_nr; i++) {
 		struct drm_plane *plane = &mtk_crtc->planes[i];
 		struct mtk_plane_state *plane_state;
+		struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
+		unsigned int comp_layer_nr = mtk_ddp_comp_layer_nr(comp);
+		unsigned int local_layer;
 
 		plane_state = to_mtk_plane_state(plane->state);
-		mtk_ddp_comp_layer_config(mtk_crtc->ddp_comp[0], i,
+
+		if (i >= comp_layer_nr) {
+			comp = mtk_crtc->ddp_comp[1];
+			local_layer = i - comp_layer_nr;
+                } else
+			local_layer = i;
+		mtk_ddp_comp_layer_config(comp , local_layer,
 					  plane_state);
 	}
 
@@ -320,6 +336,7 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
 					   mtk_crtc->ddp_comp[i]->id);
 	mtk_disp_mutex_disable(mtk_crtc->mutex);
 	for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
+		mtk_ddp_comp_bgclr_in_off(mtk_crtc->ddp_comp[i]);
 		mtk_ddp_remove_comp_from_path(mtk_crtc->config_regs,
 					      mtk_crtc->mmsys_reg_data,
 					      mtk_crtc->ddp_comp[i]->id,
@@ -340,6 +357,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
 	struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
 	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[0];
 	unsigned int i;
+	unsigned int comp_layer_nr = mtk_ddp_comp_layer_nr(comp);
+	unsigned int local_layer;
 
 	/*
 	 * TODO: instead of updating the registers here, we should prepare
@@ -362,7 +381,14 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
 			plane_state = to_mtk_plane_state(plane->state);
 
 			if (plane_state->pending.config) {
-				mtk_ddp_comp_layer_config(comp, i, plane_state);
+				if (i >= comp_layer_nr) {
+					comp = mtk_crtc->ddp_comp[1];
+					local_layer = i - comp_layer_nr;
+                                } else
+					local_layer = i;
+
+				mtk_ddp_comp_layer_config(comp, local_layer,
+							  plane_state);
 				plane_state->pending.config = false;
 			}
 		}
@@ -604,6 +630,14 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 	}
 
 	mtk_crtc->layer_nr = mtk_ddp_comp_layer_nr(mtk_crtc->ddp_comp[0]);
+        if (mtk_crtc->ddp_comp_nr > 1) {
+		struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[1];
+		enum mtk_ddp_comp_type comp_type;
+
+		comp_type = mtk_ddp_comp_get_type(comp->id);
+		if (comp_type == MTK_DISP_OVL || comp_type == MTK_DISP_OVL_2L)
+			mtk_crtc->layer_nr += mtk_ddp_comp_layer_nr(comp);
+        }
 	mtk_crtc->planes = devm_kcalloc(dev, mtk_crtc->layer_nr,
 					sizeof(struct drm_plane),
 					GFP_KERNEL);
-- 
1.8.1.1.dirty