This is a preparation for adding support for the ovl_adaptor sub driver Ovl_adaptor is a DRM sub driver, which doesn't have dma dev. Add dma_dev_get function for getting representative dma dev in ovl_adaptor.
Signed-off-by: Nancy.Lin nancy.lin@mediatek.com Reviewed-by: AngeloGioachino Del Regno angelogioacchino.delregno@collabora.com Reviewed-by: CK Hu ck.hu@mediatek.com --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 15 +++++++++++++++ drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 1 + drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 8 ++++++++ 3 files changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 8cc0a1283d7c..0d79590f733f 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -60,6 +60,7 @@ struct mtk_drm_crtc { #endif
struct device *mmsys_dev; + struct device *dma_dev; struct mtk_mutex *mutex; unsigned int ddp_comp_nr; struct mtk_ddp_comp **ddp_comp; @@ -855,6 +856,13 @@ static int mtk_drm_crtc_init_comp_planes(struct drm_device *drm_dev, return 0; }
+struct device *mtk_drm_crtc_dma_dev_get(struct drm_crtc *crtc) +{ + struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); + + return mtk_crtc->dma_dev; +} + int mtk_drm_crtc_create(struct drm_device *drm_dev, const enum mtk_ddp_comp_id *path, unsigned int path_len) { @@ -940,6 +948,13 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, return ret; }
+ /* + * Default to use the first component as the dma dev. + * In the case of ovl_adaptor sub driver, it needs to use the + * dma_dev_get function to get representative dma dev. + */ + mtk_crtc->dma_dev = mtk_ddp_comp_dma_dev_get(&priv->ddp_comp[path[0]]); + ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, pipe); if (ret < 0) return ret; diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h index cb9a36c48d4f..f5a6e80c5265 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h @@ -22,5 +22,6 @@ int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, struct mtk_plane_state *state); void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane, struct drm_atomic_state *plane_state); +struct device *mtk_drm_crtc_dma_dev_get(struct drm_crtc *crtc);
#endif /* MTK_DRM_CRTC_H */ diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 221e2e3a3c8d..4f7fae41c916 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -68,6 +68,7 @@ struct mtk_ddp_comp_funcs { void (*bgclr_in_off)(struct device *dev); void (*ctm_set)(struct device *dev, struct drm_crtc_state *state); + struct device * (*dma_dev_get)(struct device *dev); };
struct mtk_ddp_comp { @@ -188,6 +189,13 @@ static inline void mtk_ddp_ctm_set(struct mtk_ddp_comp *comp, comp->funcs->ctm_set(comp->dev, state); }
+static inline struct device *mtk_ddp_comp_dma_dev_get(struct mtk_ddp_comp *comp) +{ + if (comp->funcs && comp->funcs->dma_dev_get) + return comp->funcs->dma_dev_get(comp->dev); + return 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,