diff options
Diffstat (limited to 'include/linux/usb/rawbulk.h')
| -rwxr-xr-x | include/linux/usb/rawbulk.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/include/linux/usb/rawbulk.h b/include/linux/usb/rawbulk.h new file mode 100755 index 00000000..05a22b10 --- /dev/null +++ b/include/linux/usb/rawbulk.h @@ -0,0 +1,166 @@ +/* + * Rawbulk Driver from VIA Telecom + * + * Copyright (C) 2011 VIA Telecom, Inc. + * Author: Karfield Chen (kfchen@via-telecom.com) + * + * 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 __RAWBULK_H__ +#define __RAWBULK_H__ + +#include <linux/usb.h> +#include <linux/usb/ch9.h> +#include <linux/usb/composite.h> +#include <linux/usb/gadget.h> +#include <linux/wakelock.h> +#include <linux/device.h> +#include <linux/tty.h> +#include <linux/tty_driver.h> + +#define INTF_DESC 0 +#define BULKIN_DESC 1 +#define BULKOUT_DESC 2 +#define MAX_DESC_ARRAY 4 + +#define NAME_BUFFSIZE 64 +#define MAX_ATTRIBUTES 10 + +#define MAX_TTY_RX 4 +#define MAX_TTY_RX_PACKAGE 512 +#define MAX_TTY_TX 8 +#define MAX_TTY_TX_PACKAGE 64 + +struct rawbulk_function { + int transfer_id; + const char *longname; + const char *shortname; + struct device *dev; + + /* Controls */ + spinlock_t lock; + int enable: 1; + int activated: 1; /* set when usb enabled */ + int tty_opened: 1; + + struct work_struct activator; /* asynic transaction starter */ + + struct wake_lock keep_awake; + + /* USB Gadget related */ + struct usb_function function; + struct usb_composite_dev *cdev; + struct usb_ep *bulk_out, *bulk_in; + + int rts_state; /* Handshaking pins (outputs) */ + int dtr_state; + int cts_state; /* Handshaking pins (inputs) */ + int dsr_state; + int dcd_state; + int ri_state; + + /* TTY related */ + struct tty_struct *tty; + int tty_minor; + struct tty_port port; + spinlock_t tx_lock; + struct list_head tx_free; + struct list_head tx_inproc; + spinlock_t rx_lock; + struct list_head rx_free; + struct list_head rx_inproc; + struct list_head rx_throttled; + unsigned int last_pushed; + + /* Transfer Controls */ + int nups; + int ndowns; + int upsz; + int downsz; + int splitsz; + int autoreconn; + int pushable; /* Set to use push-way for upstream */ + + /* Descriptors and Strings */ + struct usb_descriptor_header *fs_descs[MAX_DESC_ARRAY]; + struct usb_descriptor_header *hs_descs[MAX_DESC_ARRAY]; + struct usb_string string_defs[2]; + struct usb_gadget_strings string_table; + struct usb_gadget_strings *strings[2]; + struct usb_interface_descriptor interface; + struct usb_endpoint_descriptor fs_bulkin_endpoint; + struct usb_endpoint_descriptor hs_bulkin_endpoint; + struct usb_endpoint_descriptor fs_bulkout_endpoint; + struct usb_endpoint_descriptor hs_bulkout_endpoint; + + /* Sysfs Accesses */ + int max_attrs; + struct device_attribute attr[MAX_ATTRIBUTES]; +}; + +enum transfer_id { + RAWBULK_TID_MODEM, + RAWBULK_TID_ETS, + RAWBULK_TID_AT, + RAWBULK_TID_PCV, + RAWBULK_TID_GPS, + _MAX_TID +}; + +#define RAWBULK_INCEPT_FLAG_ENABLE 0x01 +#define RAWBULK_INCEPT_FLAG_PUSH_WAY 0x02 +typedef int (*rawbulk_intercept_t)(struct usb_interface *interface, unsigned int flags); +typedef void (*rawbulk_autoreconn_callback_t)(int transfer_id); + +struct rawbulk_function *rawbulk_lookup_function(int transfer_id); + +/* rawbulk tty io */ +int rawbulk_register_tty(struct rawbulk_function *fn); +void rawbulk_unregister_tty(struct rawbulk_function *fn); + +int rawbulk_tty_stop_io(struct rawbulk_function *fn); +int rawbulk_tty_start_io(struct rawbulk_function *fn); +int rawbulk_tty_alloc_request(struct rawbulk_function *fn); +void rawbulk_tty_free_request(struct rawbulk_function *fn); + +/* bind/unbind for gadget */ +int rawbulk_bind_function(int transfer_id, struct usb_function *function, + struct usb_ep *bulk_out, struct usb_ep *bulk_in, + rawbulk_autoreconn_callback_t autoreconn_callback); +void rawbulk_unbind_function(int trasfer_id); +int rawbulk_check_enable(struct rawbulk_function *fn); +void rawbulk_disable_function(struct rawbulk_function *fn); + +/* bind/unbind host interfaces */ +int rawbulk_bind_host_interface(struct usb_interface *interface, + rawbulk_intercept_t inceptor); +void rawbulk_unbind_host_interface(struct usb_interface *interface); + +/* operations for transactions */ +int rawbulk_start_transactions(int transfer_id, int nups, int ndowns, + int upsz, int downsz, int splitsz, int pushable); +void rawbulk_stop_transactions(int transfer_id); +int rawbulk_halt_transactions(int transfer_id); +int rawbulk_resume_transactions(int transfer_id); + +int rawbulk_suspend_host_interface(int transfer_id, pm_message_t message); +int rawbulk_resume_host_interface(int transfer_id); +int rawbulk_push_upstream_buffer(int transfer_id, const void *buffer, + unsigned int length); + +int rawbulk_forward_ctrlrequest(const struct usb_ctrlrequest *ctrl); + +/* statics and state */ +int rawbulk_transfer_statistics(int transfer_id, char *buf); +int rawbulk_transfer_state(int transfer_id); + +#endif /* __RAWBULK_HEADER_FILE__ */ |