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     ˆÉÈƒ€_†I|¥�+ÀÇ A    /* SPDX-License-Identifier: GPL-2.0 */
/*
 * GNSS receiver support
 *
 * Copyright (C) 2018 Johan Hovold <johan@kernel.org>
 */

#ifndef _LINUX_GNSS_H
#define _LINUX_GNSS_H

#include <linux/cdev.h>
#include <linux/device.h>
#include <linux/kfifo.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
#include <linux/types.h>
#include <linux/wait.h>

struct gnss_device;

enum gnss_type {
	GNSS_TYPE_NMEA = 0,
	GNSS_TYPE_SIRF,
	GNSS_TYPE_UBX,
	GNSS_TYPE_MTK,

	GNSS_TYPE_COUNT
};

struct gnss_operations {
	int (*open)(struct gnss_device *gdev);
	void (*close)(struct gnss_device *gdev);
	int (*write_raw)(struct gnss_device *gdev, const unsigned char *buf,
				size_t count);
};

struct gnss_device {
	struct device dev;
	struct cdev cdev;
	int id;

	enum gnss_type type;
	unsigned long flags;

	struct rw_semaphore rwsem;
	const struct gnss_operations *ops;
	unsigned int count;
	unsigned int disconnected:1;

	struct mutex read_mutex;
	struct kfifo read_fifo;
	wait_queue_head_t read_queue;

	struct mutex write_mutex;
	char *write_buf;
};

struct gnss_device *gnss_allocate_device(struct device *parent);
void gnss_put_device(struct gnss_device *gdev);
int gnss_register_device(struct gnss_device *gdev);
void gnss_deregister_device(struct gnss_device *gdev);

int gnss_insert_raw(struct gnss_device *gdev, const unsigned char *buf,
			size_t count);

static inline void gnss_set_drvdata(struct gnss_device *gdev, void *data)
{
	dev_set_drvdata(&gdev->dev, data);
}

static inline void *gnss_get_drvdata(struct gnss_device *gdev)
{
	return dev_get_drvdata(&gdev->dev);
}

#endif /* _LINUX_GNSS_H */
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     ˆÊÉƒe§Ù¾ÀÇ ¥    /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) ST-Ericsson AB 2010
 * Author:	Sjur Brendeland
 */

#ifndef CFCTRL_H_
#define CFCTRL_H_
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl.h>

/* CAIF Control packet commands */
enum cfctrl_cmd {
	CFCTRL_CMD_LINK_SETUP = 0,
	CFCTRL_CMD_LINK_DESTROY = 1,
	CFCTRL_CMD_LINK_ERR = 2,
	CFCTRL_CMD_ENUM = 3,
	CFCTRL_CMD_SLEEP = 4,
	CFCTRL_CMD_WAKE = 5,
	CFCTRL_CMD_LINK_RECONF = 6,
	CFCTRL_CMD_START_REASON = 7,
	CFCTRL_CMD_RADIO_SET = 8,
	CFCTRL_CMD_MODEM_SET = 9,
	CFCTRL_CMD_MASK = 0xf
};

/* Channel types */
enum cfctrl_srv {
	CFCTRL_SRV_DECM = 0,
	CFCTRL_SRV_VEI = 1,
	CFCTRL_SRV_VIDEO = 2,
	CFCTRL_SRV_DBG = 3,
	CFCTRL_SRV_DATAGRAM = 4,
	CFCTRL_SRV_RFM = 5,
	CFCTRL_SRV_UTIL = 6,
	CFCTRL_SRV_MASK = 0xf
};

#define CFCTRL_RSP_BIT 0x20
#define CFCTRL_ERR_BIT 0x10

struct cfctrl_rsp {
	void (*linksetup_rsp)(struct cflayer *layer, u8 linkid,
			      enum cfctrl_srv serv, u8 phyid,
			      struct cflayer *adapt_layer);
	void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid);
	void (*linkerror_ind)(void);
	void (*enum_rsp)(void);
	void (*sleep_rsp)(void);
	void (*wake_rsp)(void);
	void (*restart_rsp)(void);
	void (*radioset_rsp)(void);
	void (*reject_rsp)(struct cflayer *layer, u8 linkid,
				struct cflayer *client_layer);
};

/* Link Setup Parameters for CAIF-Links. */
struct cfctrl_link_param {
	enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */
	u8 priority;		  /* (P4,P0) Priority of the channel */
	u8 phyid;		  /* (U2-U0) Physical interface to connect */
	u8 endpoint;		  /* (E1,E0) Endpoint for data channels */
	u8 chtype;		  /* (H1,H0) Channel-Type, applies to
				   *            VEI, DEBUG */
	union {
		struct {
			u8 connid;	/*  (D7,D0) Video LinkId */
		} video;

		struct {
			u32 connid;	/* (N31,Ngit0) Connection ID used
					 *  for Datagram */
		} datagram;

		struct {
			u32 connid;	/* Connection ID used for RFM */
			char volume[20];	/* Volume to mount for RFM */
		} rfm;		/* Configuration for RFM */

		struct {
			u16 fifosize_kb;	/* Psock FIFO size in KB */
			u16 fifosize_bufs;	/* Psock # signal buffers */
			char name[16];	/* Name