Contributors: 4
Author Tokens Token Proportion Commits Commit Proportion
Jeykumar Sankaran 216 93.51% 1 25.00%
Randy Dunlap 8 3.46% 1 25.00%
Marijn Suijten 5 2.16% 1 25.00%
Thomas Gleixner 2 0.87% 1 25.00%
Total 231 4 


/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
 */

#ifndef _DPU_HW_VBIF_H
#define _DPU_HW_VBIF_H

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

struct dpu_hw_vbif;

/**
 * struct dpu_hw_vbif_ops : Interface to the VBIF hardware driver functions
 *  Assumption is these functions will be called after clocks are enabled
 */
struct dpu_hw_vbif_ops {
	/**
	 * @set_limit_conf: set transaction limit config
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 * @rd: true for read limit; false for write limit
	 * @limit: outstanding transaction limit
	 */
	void (*set_limit_conf)(struct dpu_hw_vbif *vbif,
			u32 xin_id, bool rd, u32 limit);

	/**
	 * @get_limit_conf: get transaction limit config
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 * @rd: true for read limit; false for write limit
	 * @return: outstanding transaction limit
	 */
	u32 (*get_limit_conf)(struct dpu_hw_vbif *vbif,
			u32 xin_id, bool rd);

	/**
	 * @set_halt_ctrl: set halt control
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 * @enable: halt control enable
	 */
	void (*set_halt_ctrl)(struct dpu_hw_vbif *vbif,
			u32 xin_id, bool enable);

	/**
	 * @get_halt_ctrl: get halt control
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 * @return: halt control enable
	 */
	bool (*get_halt_ctrl)(struct dpu_hw_vbif *vbif,
			u32 xin_id);

	/**
	 * @set_qos_remap: set QoS priority remap
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 * @level: priority level
	 * @remap_level: remapped level
	 */
	void (*set_qos_remap)(struct dpu_hw_vbif *vbif,
			u32 xin_id, u32 level, u32 remap_level);

	/**
	 * @set_mem_type: set memory type
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 * @value: memory type value
	 */
	void (*set_mem_type)(struct dpu_hw_vbif *vbif,
			u32 xin_id, u32 value);

	/**
	 * @clear_errors: clear any vbif errors
	 *	This function clears any detected pending/source errors
	 *	on the VBIF interface, and optionally returns the detected
	 *	error mask(s).
	 * @vbif: vbif context driver
	 * @pnd_errors: pointer to pending error reporting variable
	 * @src_errors: pointer to source error reporting variable
	 */
	void (*clear_errors)(struct dpu_hw_vbif *vbif,
		u32 *pnd_errors, u32 *src_errors);

	/**
	 * @set_write_gather_en: set write_gather enable
	 * @vbif: vbif context driver
	 * @xin_id: client interface identifier
	 */
	void (*set_write_gather_en)(struct dpu_hw_vbif *vbif, u32 xin_id);
};

struct dpu_hw_vbif {
	/* base */
	struct dpu_hw_blk_reg_map hw;

	/* vbif */
	enum dpu_vbif idx;
	const struct dpu_vbif_cfg *cap;

	/* ops */
	struct dpu_hw_vbif_ops ops;
};

struct dpu_hw_vbif *dpu_hw_vbif_init(struct drm_device *dev,
				     const struct dpu_vbif_cfg *cfg,
				     void __iomem *addr);

#endif /*_DPU_HW_VBIF_H */