drivers/staging/gdm724x/gdm_tty.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */

#ifndef _GDM_TTY_H_
#define _GDM_TTY_H_

#include <linux/types.h>
#include <linux/tty.h>

#define TTY_MAX_COUNT		2

#define MAX_ISSUE_NUM 3

enum TO_HOST_RESULT {
	TO_HOST_BUFFER_REQUEST_FAIL = 1,
	TO_HOST_PORT_CLOSE = 2,
	TO_HOST_INVALID_PACKET = 3,
};

enum RECV_PACKET_PROCESS {
	RECV_PACKET_PROCESS_COMPLETE = 0,
	RECV_PACKET_PROCESS_CONTINUE = 1,
};

struct gdm {
	struct tty_dev *tty_dev;
	struct tty_port port;
	unsigned int index;
	unsigned int minor;
};

struct tty_dev {
	void *priv_dev;
	int (*send_func)(void *priv_dev,
			 void *data,
			 int len,
			 int tty_index,
			 void (*cb)(void *cb_data),
			 void *cb_data);
	int (*recv_func)(void *priv_dev,
			 int (*cb)(void *data,
				   int len,
				   int tty_index,
				   struct tty_dev *tty_dev,
				   int complete));
	int (*send_control)(void *priv_dev,
			    int request,
			    int value,
			    void *data,
			    int len);
	struct gdm *gdm[2];
};

int register_lte_tty_driver(void);
void unregister_lte_tty_driver(void);
int register_lte_tty_device(struct tty_dev *tty_dev, struct device *dev);
void unregister_lte_tty_device(struct tty_dev *tty_dev);

#endif /* _GDM_USB_H_ */