Since some SoCs support premultiplied pixel formats but some do not,
the blend_modes parameter is added to mtk_plane_init(), which is
obtained from the mtk_ddp_comp_get_blend_modes function implemented
in different blending supported components.

The blending supported components can use driver data to set the
blend mode capabilities for different SoCs.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_crtc.c             |  1 +
 drivers/gpu/drm/mediatek/mtk_ddp_comp.c         |  2 ++
 drivers/gpu/drm/mediatek/mtk_ddp_comp.h         | 10 ++++++++++
 drivers/gpu/drm/mediatek/mtk_disp_drv.h         |  2 ++
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c         |  7 +++++++
 drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c |  7 +++++++
 drivers/gpu/drm/mediatek/mtk_ethdr.c            |  7 +++++++
 drivers/gpu/drm/mediatek/mtk_ethdr.h            |  1 +
 drivers/gpu/drm/mediatek/mtk_plane.c            | 15 +++++++--------
 drivers/gpu/drm/mediatek/mtk_plane.h            |  4 ++--
 10 files changed, 46 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c
index 175b00e5a253..b65f196f2015 100644
--- a/drivers/gpu/drm/mediatek/mtk_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_crtc.c
@@ -913,6 +913,7 @@ static int mtk_crtc_init_comp_planes(struct drm_device *drm_dev,
 				BIT(pipe),
 				mtk_crtc_plane_type(mtk_crtc->layer_nr, num_planes),
 				mtk_ddp_comp_supported_rotations(comp),
+				mtk_ddp_comp_get_blend_modes(comp),
 				mtk_ddp_comp_get_formats(comp),
 				mtk_ddp_comp_get_num_formats(comp), i);
 		if (ret)
diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
index be66d94be361..edc6417639e6 100644
--- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
@@ -363,6 +363,7 @@ static const struct mtk_ddp_comp_funcs ddp_ovl = {
 	.layer_config = mtk_ovl_layer_config,
 	.bgclr_in_on = mtk_ovl_bgclr_in_on,
 	.bgclr_in_off = mtk_ovl_bgclr_in_off,
+	.get_blend_modes = mtk_ovl_get_blend_modes,
 	.get_formats = mtk_ovl_get_formats,
 	.get_num_formats = mtk_ovl_get_num_formats,
 };
@@ -416,6 +417,7 @@ static const struct mtk_ddp_comp_funcs ddp_ovl_adaptor = {
 	.disconnect = mtk_ovl_adaptor_disconnect,
 	.add = mtk_ovl_adaptor_add_comp,
 	.remove = mtk_ovl_adaptor_remove_comp,
+	.get_blend_modes = mtk_ovl_adaptor_get_blend_modes,
 	.get_formats = mtk_ovl_adaptor_get_formats,
 	.get_num_formats = mtk_ovl_adaptor_get_num_formats,
 	.mode_valid = mtk_ovl_adaptor_mode_valid,
diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h
index ecf6dc283cd7..39720b27f4e9 100644
--- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h
@@ -80,6 +80,7 @@ struct mtk_ddp_comp_funcs {
 	void (*ctm_set)(struct device *dev,
 			struct drm_crtc_state *state);
 	struct device * (*dma_dev_get)(struct device *dev);
+	u32 (*get_blend_modes)(struct device *dev);
 	const u32 *(*get_formats)(struct device *dev);
 	size_t (*get_num_formats)(struct device *dev);
 	void (*connect)(struct device *dev, struct device *mmsys_dev, unsigned int next);
@@ -266,6 +267,15 @@ static inline struct device *mtk_ddp_comp_dma_dev_get(struct mtk_ddp_comp *comp)
 	return comp->dev;
 }
 
+static inline
+u32 mtk_ddp_comp_get_blend_modes(struct mtk_ddp_comp *comp)
+{
+	if (comp->funcs && comp->funcs->get_blend_modes)
+		return comp->funcs->get_blend_modes(comp->dev);
+
+	return 0;
+}
+
 static inline
 const u32 *mtk_ddp_comp_get_formats(struct mtk_ddp_comp *comp)
 {
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index 082ac18fe04a..04154db9085c 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -103,6 +103,7 @@ void mtk_ovl_register_vblank_cb(struct device *dev,
 void mtk_ovl_unregister_vblank_cb(struct device *dev);
 void mtk_ovl_enable_vblank(struct device *dev);
 void mtk_ovl_disable_vblank(struct device *dev);
+u32 mtk_ovl_get_blend_modes(struct device *dev);
 const u32 *mtk_ovl_get_formats(struct device *dev);
 size_t mtk_ovl_get_num_formats(struct device *dev);
 
@@ -131,6 +132,7 @@ void mtk_ovl_adaptor_start(struct device *dev);
 void mtk_ovl_adaptor_stop(struct device *dev);
 unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev);
 struct device *mtk_ovl_adaptor_dma_dev_get(struct device *dev);
+u32 mtk_ovl_adaptor_get_blend_modes(struct device *dev);
 const u32 *mtk_ovl_adaptor_get_formats(struct device *dev);
 size_t mtk_ovl_adaptor_get_num_formats(struct device *dev);
 enum drm_mode_status mtk_ovl_adaptor_mode_valid(struct device *dev,
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index fab23b1904bd..9786ce94de0e 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -215,6 +215,13 @@ void mtk_ovl_disable_vblank(struct device *dev)
 	writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_INTEN);
 }
 
+u32 mtk_ovl_get_blend_modes(struct device *dev)
+{
+	struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
+
+	return ovl->data->blend_modes;
+}
+
 const u32 *mtk_ovl_get_formats(struct device *dev)
 {
 	struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
index c6768210b08b..bf2546c4681a 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -400,6 +400,13 @@ void mtk_ovl_adaptor_disable_vblank(struct device *dev)
 	mtk_ethdr_disable_vblank(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
 }
 
+u32 mtk_ovl_adaptor_get_blend_modes(struct device *dev)
+{
+	struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
+
+	return mtk_ethdr_get_blend_modes(ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
+}
+
 const u32 *mtk_ovl_adaptor_get_formats(struct device *dev)
 {
 	struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c
index d1d9cf8b10e1..0f22e7d337cb 100644
--- a/drivers/gpu/drm/mediatek/mtk_ethdr.c
+++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c
@@ -145,6 +145,13 @@ static irqreturn_t mtk_ethdr_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+u32 mtk_ethdr_get_blend_modes(struct device *dev)
+{
+	return BIT(DRM_MODE_BLEND_PREMULTI) |
+	       BIT(DRM_MODE_BLEND_COVERAGE) |
+	       BIT(DRM_MODE_BLEND_PIXEL_NONE);
+}
+
 void mtk_ethdr_layer_config(struct device *dev, unsigned int idx,
 			    struct mtk_plane_state *state,
 			    struct cmdq_pkt *cmdq_pkt)
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.h b/drivers/gpu/drm/mediatek/mtk_ethdr.h
index 81af9edea3f7..a72aeee46829 100644
--- a/drivers/gpu/drm/mediatek/mtk_ethdr.h
+++ b/drivers/gpu/drm/mediatek/mtk_ethdr.h
@@ -13,6 +13,7 @@ void mtk_ethdr_clk_disable(struct device *dev);
 void mtk_ethdr_config(struct device *dev, unsigned int w,
 		      unsigned int h, unsigned int vrefresh,
 		      unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
+u32 mtk_ethdr_get_blend_modes(struct device *dev);
 void mtk_ethdr_layer_config(struct device *dev, unsigned int idx,
 			    struct mtk_plane_state *state,
 			    struct cmdq_pkt *cmdq_pkt);
diff --git a/drivers/gpu/drm/mediatek/mtk_plane.c b/drivers/gpu/drm/mediatek/mtk_plane.c
index 7d2cb4e0fafa..8a48b3b0a956 100644
--- a/drivers/gpu/drm/mediatek/mtk_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_plane.c
@@ -320,8 +320,8 @@ static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
 
 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
 		   unsigned long possible_crtcs, enum drm_plane_type type,
-		   unsigned int supported_rotations, const u32 *formats,
-		   size_t num_formats, unsigned int plane_idx)
+		   unsigned int supported_rotations, const u32 blend_modes,
+		   const u32 *formats, size_t num_formats, unsigned int plane_idx)
 {
 	int err;
 
@@ -366,12 +366,11 @@ int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
 	if (err)
 		DRM_ERROR("failed to create property: alpha\n");
 
-	err = drm_plane_create_blend_mode_property(plane,
-						   BIT(DRM_MODE_BLEND_PREMULTI) |
-						   BIT(DRM_MODE_BLEND_COVERAGE) |
-						   BIT(DRM_MODE_BLEND_PIXEL_NONE));
-	if (err)
-		DRM_ERROR("failed to create property: blend_mode\n");
+	if (blend_modes) {
+		err = drm_plane_create_blend_mode_property(plane, blend_modes);
+		if (err)
+			DRM_ERROR("failed to create property: blend_mode\n");
+	}
 
 	drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
 
diff --git a/drivers/gpu/drm/mediatek/mtk_plane.h b/drivers/gpu/drm/mediatek/mtk_plane.h
index 5b177eac67b7..3b13b89989c7 100644
--- a/drivers/gpu/drm/mediatek/mtk_plane.h
+++ b/drivers/gpu/drm/mediatek/mtk_plane.h
@@ -48,6 +48,6 @@ to_mtk_plane_state(struct drm_plane_state *state)
 
 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
 		   unsigned long possible_crtcs, enum drm_plane_type type,
-		   unsigned int supported_rotations, const u32 *formats,
-		   size_t num_formats, unsigned int plane_idx);
+		   unsigned int supported_rotations, const u32 blend_modes,
+		   const u32 *formats, size_t num_formats, unsigned int plane_idx);
 #endif
-- 
2.43.0