/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
 */

#ifndef _SDE_HW_DS_H
#define _SDE_HW_DS_H

#include "sde_hw_mdss.h"
#include "sde_hw_util.h"
#include "sde_hw_catalog.h"
#include "sde_hw_blk.h"

struct sde_hw_ds;

/* Destination Scaler DUAL mode overfetch pixel count */
#define SDE_DS_OVERFETCH_SIZE 5

/* Destination scaler DUAL mode operation bit */
#define SDE_DS_OP_MODE_DUAL BIT(16)

/* struct sde_hw_ds_cfg - destination scaler config
 * @idx          : DS selection index
 * @flags        : Flag to switch between mode for DS
 * @lm_width     : Layer mixer width configuration
 * @lm_heigh     : Layer mixer height configuration
 * @scl3_cfg     : Configuration data for scaler
 */
struct sde_hw_ds_cfg {
	u32 idx;
	int flags;
	u32 lm_width;
	u32 lm_height;
	struct sde_hw_scaler3_cfg scl3_cfg;
};

/**
 * struct sde_hw_ds_ops - interface to the destination scaler
 * hardware driver functions
 * Caller must call the init function to get the ds context for each ds
 * Assumption is these functions will be called after clocks are enabled
 */
struct sde_hw_ds_ops {
	/**
	 * setup_opmode - destination scaler op mode setup
	 * @hw_ds   : Pointer to ds context
	 * @op_mode : Op mode configuration
	 */
	void (*setup_opmode)(struct sde_hw_ds *hw_ds,
				u32 op_mode);

	/**
	 * setup_scaler - destination scaler block setup
	 * @hw_ds          : Pointer to ds context
	 * @scaler_cfg     : Pointer to scaler data
	 * @scaler_lut_cfg : Pointer to scaler lut
	 */
	void (*setup_scaler)(struct sde_hw_ds *hw_ds,
				void *scaler_cfg,
				void *scaler_lut_cfg);
};

/**
 * struct sde_hw_ds - destination scaler description
 * @base : Hardware block base structure
 * @hw   : Block hardware details
 * @idx  : Destination scaler index
 * @scl  : Pointer to
 *          - scaler offset relative to top offset
 *          - capabilities
 * @ops  : Pointer to operations for this DS
 */
struct sde_hw_ds {
	struct sde_hw_blk base;
	struct sde_hw_blk_reg_map hw;
	enum sde_ds idx;
	struct sde_ds_cfg *scl;
	struct sde_hw_ds_ops ops;
};

/**
 * sde_hw_ds_init - initializes the destination scaler
 * hw driver object and should be called once before
 * accessing every destination scaler
 * @idx : DS index for which driver object is required
 * @addr: Mapped register io address of MDP
 * @m   : MDSS catalog information
 * @Return: pointer to structure or ERR_PTR
 */
struct sde_hw_ds *sde_hw_ds_init(enum sde_ds idx,
			void __iomem *addr,
			struct sde_mdss_cfg *m);

/**
 * sde_hw_ds_destroy - destroys destination scaler
 * driver context
 * @hw_ds:   Pointer to DS context
 */
void sde_hw_ds_destroy(struct sde_hw_ds *hw_ds);

#endif /*_SDE_HW_DS_H */