Release 4.7 drivers/staging/gdm724x/gdm_mux.h

/*
 * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#ifndef _GDM_MUX_H_

#define _GDM_MUX_H_

#include <linux/types.h>
#include <linux/usb.h>
#include <linux/list.h>

#include "gdm_tty.h"


#define PM_NORMAL 0

#define PM_SUSPEND 1


#define USB_RT_ACM          (USB_TYPE_CLASS | USB_RECIP_INTERFACE)


#define START_FLAG 0xA512485A

#define MUX_HEADER_SIZE 14

#define MUX_TX_MAX_SIZE (1024*10)

#define MUX_RX_MAX_SIZE (1024*30)

#define AT_PKT_TYPE 0xF011

#define DM_PKT_TYPE 0xF010


#define RETRY_TIMER 30 
/* msec */


struct mux_pkt_header {
	
__le32 start_flag;
	
__le32 seq_num;
	
__le32 payload_size;
	
__le16 packet_type;
	
unsigned char data[0];
};


struct mux_tx {
	
struct urb *urb;
	
u8 *buf;
	
int  len;
	
void (*callback)(void *cb_data);
	
void *cb_data;
};


struct mux_rx {
	
struct list_head free_list;
	
struct list_head rx_submit_list;
	
struct list_head to_host_list;
	
struct urb *urb;
	
u8 *buf;
	
void *mux_dev;
	
u32 offset;
	
u32 len;
	
int (*callback)(void *data,
			int len,
			int tty_index,
			struct tty_dev *tty_dev,
			int complete);
};


struct rx_cxt {
	
struct list_head to_host_list;
	
struct list_head rx_submit_list;
	
struct list_head rx_free_list;
	
spinlock_t to_host_lock;
	
spinlock_t submit_list_lock;
	
spinlock_t free_list_lock;
};


struct mux_dev {
	
struct usb_device *usbdev;
	
struct usb_interface *control_intf;
	
struct usb_interface *data_intf;
	
struct rx_cxt	rx;
	
struct delayed_work work_rx;
	
struct usb_interface *intf;
	
int usb_state;
	
int (*rx_cb)(void *data,
		     int len,
		     int tty_index,
		     struct tty_dev *tty_dev,
		     int complete);
	
spinlock_t write_lock;
	
struct tty_dev *tty_dev;
};

#endif /* _GDM_MUX_H_ */
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Directory: drivers/staging/gdm724x

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