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

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.h
Extension
.h
Size
2240 bytes
Lines
84
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct dpu_hw_wb_cfg {
	struct dpu_hw_fmt_layout dest;
	enum dpu_intf_mode intf_mode;
	struct drm_rect roi;
	struct drm_rect crop;
};

/**
 * struct dpu_hw_wb_ops : Interface to the wb hw driver functions
 *  Assumption is these functions will be called after clocks are enabled
 *  @setup_outaddress: setup output address from the writeback job
 *  @setup_outformat: setup output format of writeback block from writeback job
 *  @setup_roi:       setup ROI (Region of Interest) parameters
 *  @setup_qos_lut:   setup qos LUT for writeback block based on input
 *  @setup_cdp:       setup chroma down prefetch block for writeback block
 *  @setup_clk_force_ctrl: setup clock force control
 *  @bind_pingpong_blk: enable/disable the connection with ping-pong block
 */
struct dpu_hw_wb_ops {
	void (*setup_outaddress)(struct dpu_hw_wb *ctx,
			struct dpu_hw_wb_cfg *wb);

	void (*setup_outformat)(struct dpu_hw_wb *ctx,
			struct dpu_hw_wb_cfg *wb,
			const struct msm_format *fmt);

	void (*setup_roi)(struct dpu_hw_wb *ctx,
			struct dpu_hw_wb_cfg *wb);

	void (*setup_qos_lut)(struct dpu_hw_wb *ctx,
			struct dpu_hw_qos_cfg *cfg);

	void (*setup_cdp)(struct dpu_hw_wb *ctx,
			  const struct msm_format *fmt,
			  bool enable);

	bool (*setup_clk_force_ctrl)(struct dpu_hw_wb *ctx,
				     bool enable);

	void (*bind_pingpong_blk)(struct dpu_hw_wb *ctx,
				  const enum dpu_pingpong pp);
};

/**
 * struct dpu_hw_wb : WB driver object
 * @hw: block hardware details
 * @idx: hardware index number within type
 * @caps: hardware capabilities
 * @ops: function pointers
 */
struct dpu_hw_wb {
	struct dpu_hw_blk_reg_map hw;

	/* wb path */
	int idx;
	const struct dpu_wb_cfg *caps;

	/* ops */
	struct dpu_hw_wb_ops ops;
};

struct dpu_hw_wb *dpu_hw_wb_init(struct drm_device *dev,
				 const struct dpu_wb_cfg *cfg,
				 void __iomem *addr,
				 const struct dpu_mdss_version *mdss_rev);

#endif /*_DPU_HW_WB_H */

Annotation

Implementation Notes