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

#ifndef _USBPD_H
#define _USBPD_H

#include <linux/device.h>

struct usbpd;

enum data_role {
	DR_NONE = -1,
	DR_UFP = 0,
	DR_DFP = 1,
};

enum power_role {
	PR_NONE = -1,
	PR_SINK = 0,
	PR_SRC = 1,
};

enum pd_sig_type {
	HARD_RESET_SIG = 0,
	CABLE_RESET_SIG,
};

enum pd_sop_type {
	SOP_MSG = 0,
	SOPI_MSG,
	SOPII_MSG,
};

enum pd_spec_rev {
	USBPD_REV_20 = 1,
	USBPD_REV_30 = 2,
};

/* enable msg and signal to be received by phy */
#define FRAME_FILTER_EN_SOP		BIT(0)
#define FRAME_FILTER_EN_SOPI		BIT(1)
#define FRAME_FILTER_EN_HARD_RESET	BIT(5)

struct pd_phy_params {
	void		(*signal_cb)(struct usbpd *pd, enum pd_sig_type sig);
	void		(*msg_rx_cb)(struct usbpd *pd, enum pd_sop_type sop,
					u8 *buf, size_t len);
	void		(*shutdown_cb)(struct usbpd *pd);
	enum data_role	data_role;
	enum power_role power_role;
	u8		frame_filter_val;
};

struct pd_phy_ops {
	int (*open)(struct pd_phy_params *params);
	int (*signal)(enum pd_sig_type sig);
	int (*write)(u16 hdr, const u8 *data, size_t data_len,
						enum pd_sop_type sop);
	int (*update_roles)(enum data_role dr, enum power_role pr);
	int (*update_frame_filter)(u8 frame_filter_val);
	void (*close)(void);
};

#if IS_ENABLED(CONFIG_USB_PD_POLICY)
struct usbpd *usbpd_create(struct device *parent,
					struct pd_phy_ops *pdphy_ops);
void usbpd_destroy(struct usbpd *pd);
#else
static inline struct usbpd *usbpd_create(struct device *parent,
					struct pd_phy_ops *pdphy_ops)
{
	return ERR_PTR(-ENODEV);
}
static inline void usbpd_destroy(struct usbpd *pd) { }
#endif

#endif /* _USBPD_H */