| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. */ |
| |
| #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[]; |
| }; |
| |
| 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_ */ |