drivers/staging/gdm724x/gdm_mux.h

   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
  37 struct 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
  45 struct mux_tx {
  46         struct urb *urb;
  47         u8 *buf;
  48         int  len;
  49         void (*callback)(void *cb_data);
  50         void *cb_data;
  51 };
  52
  53 struct 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
  69 struct 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
  78 struct 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_ */