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 __le32 start_flag; 39 __le32 seq_num; 40 __le32 payload_size; 41 __le16 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_ */ 96