LXR linux/drivers/staging/gdm724x/gdm

   1/*
   2 * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
   3 *
   4 * This software is licensed under the terms of the GNU General Public
   5 * License version 2, as published by the Free Software Foundation, and
   6 * may be copied, distributed, and modified under those terms.
   7 *
   8 * This program is distributed in the hope that it will be useful,
   9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11 * GNU General Public License for more details.
  12 */
  13
  14#ifndef _GDM_MUX_H_
  15#define _GDM_MUX_H_
  16
  17#include <linux/types.h>
  18#include <linux/usb.h>
  19#include <linux/list.h>
  20
  21#include "gdm_tty.h"
  22
  23#define PM_NORMAL 0
  24#define PM_SUSPEND 1
  25
  26#define USB_RT_ACM          (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
  27
  28#define START_FLAG 0xA512485A
  29#define MUX_HEADER_SIZE 14
  30#define MUX_TX_MAX_SIZE (1024*10)
  31#define MUX_RX_MAX_SIZE (1024*30)
  32#define AT_PKT_TYPE 0xF011
  33#define DM_PKT_TYPE 0xF010
  34
  35#define RETRY_TIMER 30 /* msec */
  36
  37struct mux_pkt_header {
  38        unsigned int start_flag;
  39        unsigned int seq_num;
  40        unsigned int payload_size;
  41        unsigned short packet_type;
  42        unsigned char data[0];
  43};
  44
  45struct mux_tx {
  46        struct urb *urb;
  47        u8 *buf;
  48        int  len;
  49        void (*callback)(void *cb_data);
  50        void *cb_data;
  51};
  52
  53struct mux_rx {
  54        struct list_head free_list;
  55        struct list_head rx_submit_list;
  56        struct list_head to_host_list;
  57        struct urb *urb;
  58        u8 *buf;
  59        void *mux_dev;
  60        u32 offset;
  61        u32 len;
  62        int (*callback)(void *data,
  63                        int len,
  64                        int tty_index,
  65                        struct tty_dev *tty_dev,
  66                        int complete);
  67};
  68
  69struct rx_cxt {
  70        struct list_head to_host_list;
  71        struct list_head rx_submit_list;
  72        struct list_head rx_free_list;
  73        spinlock_t to_host_lock;
  74        spinlock_t submit_list_lock;
  75        spinlock_t free_list_lock;
  76};
  77
  78struct mux_dev {
  79        struct usb_device *usbdev;
  80        struct usb_interface *control_intf;
  81        struct usb_interface *data_intf;
  82        struct rx_cxt   rx;
  83        struct delayed_work work_rx;
  84        struct usb_interface *intf;
  85        int usb_state;
  86        int (*rx_cb)(void *data,
  87                     int len,
  88                     int tty_index,
  89                     struct tty_dev *tty_dev,
  90                     int complete);
  91        spinlock_t write_lock;
  92        struct tty_dev *tty_dev;
  93};
  94
  95#endif /* _GDM_MUX_H_ */
  96