drm/msm/dpu: stop embedding dpu_hw_blk into dpu_hw_intf

Now as dpu_hw_intf is not hanled by dpu_rm_get_assigned_resources, there
is no point in embedding the (empty) struct dpu_hw_blk into dpu_hw_intf
(and using typecasts between dpu_hw_blk and dpu_hw_intf). Drop it and
use dpu_hw_intf directly.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/20220121210618.3482550-5-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h

@@ -78,7 +78,6 @@ struct dpu_hw_intf_ops {
 };
 
 struct dpu_hw_intf {
-	struct dpu_hw_blk base;
 	struct dpu_hw_blk_reg_map hw;
 
 	/* intf */
@@ -90,16 +89,6 @@ struct dpu_hw_intf {
 	struct dpu_hw_intf_ops ops;
 };
 
-/**
- * to_dpu_hw_intf - convert base object dpu_hw_base to container
- * @hw: Pointer to base hardware block
- * return: Pointer to hardware block container
- */
-static inline struct dpu_hw_intf *to_dpu_hw_intf(struct dpu_hw_blk *hw)
-{
-	return container_of(hw, struct dpu_hw_intf, base);
-}
-
 /**
  * dpu_hw_intf_init(): Initializes the intf driver for the passed
  * interface idx.

drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c

@@ -74,14 +74,8 @@ int dpu_rm_destroy(struct dpu_rm *rm)
 			dpu_hw_ctl_destroy(hw);
 		}
 	}
-	for (i = 0; i < ARRAY_SIZE(rm->intf_blks); i++) {
-		struct dpu_hw_intf *hw;
-
-		if (rm->intf_blks[i]) {
-			hw = to_dpu_hw_intf(rm->intf_blks[i]);
-			dpu_hw_intf_destroy(hw);
-		}
-	}
+	for (i = 0; i < ARRAY_SIZE(rm->hw_intf); i++)
+		dpu_hw_intf_destroy(rm->hw_intf[i]);
 
 	return 0;
 }
@@ -179,7 +173,7 @@ int dpu_rm_init(struct dpu_rm *rm,
 			DPU_ERROR("failed intf object creation: err %d\n", rc);
 			goto fail;
 		}
-		rm->intf_blks[intf->id - INTF_0] = &hw->base;
+		rm->hw_intf[intf->id - INTF_0] = hw;
 	}
 
 	for (i = 0; i < cat->ctl_count; i++) {
@@ -593,8 +587,3 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
 
 	return num_blks;
 }
-
-struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx)
-{
-	return to_dpu_hw_intf(rm->intf_blks[intf_idx - INTF_0]);
-}

drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h

@@ -18,14 +18,14 @@ struct dpu_global_state;
  * @pingpong_blks: array of pingpong hardware resources
  * @mixer_blks: array of layer mixer hardware resources
  * @ctl_blks: array of ctl hardware resources
- * @intf_blks: array of intf hardware resources
+ * @hw_intf: array of intf hardware resources
  * @dspp_blks: array of dspp hardware resources
  */
 struct dpu_rm {
 	struct dpu_hw_blk *pingpong_blks[PINGPONG_MAX - PINGPONG_0];
 	struct dpu_hw_blk *mixer_blks[LM_MAX - LM_0];
 	struct dpu_hw_blk *ctl_blks[CTL_MAX - CTL_0];
-	struct dpu_hw_blk *intf_blks[INTF_MAX - INTF_0];
+	struct dpu_hw_intf *hw_intf[INTF_MAX - INTF_0];
 	struct dpu_hw_blk *dspp_blks[DSPP_MAX - DSPP_0];
 	struct dpu_hw_blk *merge_3d_blks[MERGE_3D_MAX - MERGE_3D_0];
 };
@@ -90,7 +90,10 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
  * @rm: DPU Resource Manager handle
  * @intf_idx: INTF's index
  */
-struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx);
+static inline struct dpu_hw_intf *dpu_rm_get_intf(struct dpu_rm *rm, enum dpu_intf intf_idx)
+{
+	return rm->hw_intf[intf_idx - INTF_0];
+}
 
 #endif /* __DPU_RM_H__ */