[PATCH v8 4/8] drm/mediatek: Add encoder_index function to mtk_ddp_comp_funcs

["Jason-JH.Lin" <jason-jh.lin@xxxxxxxxxxxx>]

1. Add encoder_index function to mtk_ddp_comp_funcs to support dynamic
connector selection for some ddp_comp who has encoder_index.
2. Add mtk_ddp_comp_encoder_index_set function to set encoder_index to
each comp.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index febcaeef16a1..8428baca70f4 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -80,6 +80,7 @@ struct mtk_ddp_comp_funcs {
 	void (*disconnect)(struct device *dev, struct device *mmsys_dev, unsigned int next);
 	void (*add)(struct device *dev, struct mtk_mutex *mutex);
 	void (*remove)(struct device *dev, struct mtk_mutex *mutex);
+	unsigned int (*encoder_index)(struct device *dev);
 };
 
 struct mtk_ddp_comp {
@@ -87,6 +88,7 @@ struct mtk_ddp_comp {
 	int irq;
 	unsigned int id;
 	const struct mtk_ddp_comp_funcs *funcs;
+	unsigned int encoder_index;
 };
 
 static inline int mtk_ddp_comp_clk_enable(struct mtk_ddp_comp *comp)
@@ -275,6 +277,12 @@ static inline bool mtk_ddp_comp_disconnect(struct mtk_ddp_comp *comp, struct dev
 	return false;
 }
 
+static inline void mtk_ddp_comp_encoder_index_set(struct mtk_ddp_comp *comp)
+{
+	if (comp->funcs && comp->funcs->encoder_index)
+		comp->encoder_index = comp->funcs->encoder_index(comp->dev);
+}
+
 int mtk_ddp_comp_get_id(struct device_node *node,
 			enum mtk_ddp_comp_type comp_type);
 unsigned int mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm,
-- 
2.18.0