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/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved
 */

#ifndef _DPU_HW_WB_H
#define _DPU_HW_WB_H

#include "dpu_hw_catalog.h"
#include "dpu_hw_mdss.h"
#include "dpu_hw_top.h"
#include "dpu_hw_util.h"
#include "dpu_hw_pingpong.h"

struct dpu_hw_wb;

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;
};

/**
 * enum CDP preload ahead address size
 */
enum {
	DPU_WB_CDP_PRELOAD_AHEAD_32,
	DPU_WB_CDP_PRELOAD_AHEAD_64
};

/**
 * struct dpu_hw_wb_qos_cfg : Writeback pipe QoS configuration
 * @danger_lut: LUT for generate danger level based on fill level
 * @safe_lut: LUT for generate safe level based on fill level
 * @creq_lut: LUT for generate creq level based on fill level
 * @danger_safe_en: enable danger safe generation
 */
struct dpu_hw_wb_qos_cfg {
	u32 danger_lut;
	u32 safe_lut;
	u64 creq_lut;
	bool danger_safe_en;
};

/**
 *
 * 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_qos_lut:   setup qos LUT for writeback block based on input
 *  @setup_cdp:       setup chroma down prefetch block for writeback block
 *  @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);

	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_wb_qos_cfg *cfg);

	void (*setup_cdp)(struct dpu_hw_wb *ctx,
			struct dpu_hw_cdp_cfg *cfg);

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

/**
 * struct dpu_hw_wb : WB driver object
 * @hw: block hardware details
 * @mdp: pointer to associated mdp portion of the catalog
 * @idx: hardware index number within type
 * @wb_hw_caps: hardware capabilities
 * @ops: function pointers
 * @hw_mdp: MDP top level hardware block
 */
struct dpu_hw_wb {
	struct dpu_hw_blk_reg_map hw;
	const struct dpu_mdp_cfg *mdp;

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

	/* ops */
	struct dpu_hw_wb_ops ops;

	struct dpu_hw_mdp *hw_mdp;
};

/**
 * dpu_hw_wb_init(): Initializes and return writeback hw driver object.
 * @idx:  wb_path index for which driver object is required
 * @addr: mapped register io address of MDP
 * @m :   pointer to mdss catalog data
 */
struct dpu_hw_wb *dpu_hw_wb_init(enum dpu_wb idx,
		void __iomem *addr,
		const struct dpu_mdss_cfg *m);

/**
 * dpu_hw_wb_destroy(): Destroy writeback hw driver object.
 * @hw_wb:  Pointer to writeback hw driver object
 */
void dpu_hw_wb_destroy(struct dpu_hw_wb *hw_wb);

#endif /*_DPU_HW_WB_H */