Release 4.9 drivers/usb/serial/omninet.c
/*
* USB ZyXEL omni.net LCD PLUS driver
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* See Documentation/usb/usb-serial.txt for more information on using this
* driver
*
* Please report both successes and troubles to the author at omninet@kroah.com
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#define DRIVER_AUTHOR "Alessandro Zummo"
#define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver"
#define ZYXEL_VENDOR_ID 0x0586
#define ZYXEL_OMNINET_ID 0x1000
/* This one seems to be a re-branded ZyXEL device */
#define BT_IGNITIONPRO_ID 0x2000
/* function prototypes */
static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port);
static void omninet_process_read_urb(struct urb *urb);
static void omninet_write_bulk_callback(struct urb *urb);
static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count);
static int omninet_write_room(struct tty_struct *tty);
static void omninet_disconnect(struct usb_serial *serial);
static int omninet_port_probe(struct usb_serial_port *port);
static int omninet_port_remove(struct usb_serial_port *port);
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
{ USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_serial_driver zyxel_omninet_device = {
.driver = {
.owner = THIS_MODULE,
.name = "omninet",
},
.description = "ZyXEL - omni.net lcd plus usb",
.id_table = id_table,
.num_ports = 1,
.port_probe = omninet_port_probe,
.port_remove = omninet_port_remove,
.open = omninet_open,
.write = omninet_write,
.write_room = omninet_write_room,
.write_bulk_callback = omninet_write_bulk_callback,
.process_read_urb = omninet_process_read_urb,
.disconnect = omninet_disconnect,
};
static struct usb_serial_driver * const serial_drivers[] = {
&zyxel_omninet_device, NULL
};
/*
* The protocol.
*
* The omni.net always exchange 64 bytes of data with the host. The first
* four bytes are the control header.
*
* oh_seq is a sequence number. Don't know if/how it's used.
* oh_len is the length of the data bytes in the packet.
* oh_xxx Bit-mapped, related to handshaking and status info.
* I normally set it to 0x03 in transmitted frames.
* 7: Active when the TA is in a CONNECTed state.
* 6: unknown
* 5: handshaking, unknown
* 4: handshaking, unknown
* 3: unknown, usually 0
* 2: unknown, usually 0
* 1: handshaking, unknown, usually set to 1 in transmitted frames
* 0: handshaking, unknown, usually set to 1 in transmitted frames
* oh_pad Probably a pad byte.
*
* After the header you will find data bytes if oh_len was greater than zero.
*/
struct omninet_header {
__u8 oh_seq;
__u8 oh_len;
__u8 oh_xxx;
__u8 oh_pad;
};
struct omninet_data {
__u8 od_outseq; /* Sequence number for bulk_out URBs */
};
static int omninet_port_probe(struct usb_serial_port *port)
{
struct omninet_data *od;
od = kzalloc(sizeof(*od), GFP_KERNEL);
if (!od)
return -ENOMEM;
usb_set_serial_port_data(port, od);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| oliver neukum | oliver neukum | 33 | 68.75% | 1 | 25.00% |
| johan hovold | johan hovold | 13 | 27.08% | 2 | 50.00% |
| greg kroah-hartman | greg kroah-hartman | 2 | 4.17% | 1 | 25.00% |
| Total | 48 | 100.00% | 4 | 100.00% |
static int omninet_port_remove(struct usb_serial_port *port)
{
struct omninet_data *od;
od = usb_get_serial_port_data(port);
kfree(od);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johan hovold | johan hovold | 22 | 70.97% | 1 | 50.00% |
| oliver neukum | oliver neukum | 9 | 29.03% | 1 | 50.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct usb_serial_port *wport;
wport = serial->port[1];
tty_port_tty_set(&wport->port, tty);
return usb_serial_generic_open(tty, port);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 37 | 64.91% | 2 | 25.00% |
| alan cox | alan cox | 11 | 19.30% | 2 | 25.00% |
| greg kroah-hartman | greg kroah-hartman | 6 | 10.53% | 3 | 37.50% |
| johan hovold | johan hovold | 3 | 5.26% | 1 | 12.50% |
| Total | 57 | 100.00% | 8 | 100.00% |
#define OMNINET_HEADERLEN 4
#define OMNINET_BULKOUTSIZE 64
#define OMNINET_PAYLOADSIZE (OMNINET_BULKOUTSIZE - OMNINET_HEADERLEN)
static void omninet_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
const struct omninet_header *hdr = urb->transfer_buffer;
const unsigned char *data;
size_t data_len;
if (urb->actual_length <= OMNINET_HEADERLEN || !hdr->oh_len)
return;
data = (char *)urb->transfer_buffer + OMNINET_HEADERLEN;
data_len = min_t(size_t, urb->actual_length - OMNINET_HEADERLEN,
hdr->oh_len);
tty_insert_flip_string(&port->port, data, data_len);
tty_flip_buffer_push(&port->port);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| johan hovold | johan hovold | 72 | 70.59% | 1 | 50.00% |
| pre-git | pre-git | 30 | 29.41% | 1 | 50.00% |
| Total | 102 | 100.00% | 2 | 100.00% |
static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
{
struct usb_serial *serial = port->serial;
struct usb_serial_port *wport = serial->port[1];
struct omninet_data *od = usb_get_serial_port_data(port);
struct omninet_header *header = (struct omninet_header *)
wport->write_urb->transfer_buffer;
int result;
if (count == 0) {
dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
return 0;
}
if (!test_and_clear_bit(0, &port->write_urbs_free)) {
dev_dbg(&port->dev, "%s - already writing\n", __func__);
return 0;
}
count = (count > OMNINET_PAYLOADSIZE) ? OMNINET_PAYLOADSIZE : count;
memcpy(wport->write_urb->transfer_buffer + OMNINET_HEADERLEN,
buf, count);
usb_serial_debug_data(&port->dev, __func__, count,
wport->write_urb->transfer_buffer);
header->oh_seq = od->od_outseq++;
header->oh_len = count;
header->oh_xxx = 0x03;
header->oh_pad = 0x00;
/* send the data out the bulk port, always 64 bytes */
wport->write_urb->transfer_buffer_length = OMNINET_BULKOUTSIZE;
result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
if (result) {
set_bit(0, &wport->write_urbs_free);
dev_err_console(port,
"%s - failed submitting write urb, error %d\n",
__func__, result);
} else
result = count;
return result;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 170 | 66.67% | 3 | 15.79% |
| greg kroah-hartman | greg kroah-hartman | 37 | 14.51% | 8 | 42.11% |
| johan hovold | johan hovold | 20 | 7.84% | 3 | 15.79% |
| linus torvalds | linus torvalds | 18 | 7.06% | 2 | 10.53% |
| alan cox | alan cox | 5 | 1.96% | 1 | 5.26% |
| harvey harrison | harvey harrison | 4 | 1.57% | 1 | 5.26% |
| ganesh varadarajan | ganesh varadarajan | 1 | 0.39% | 1 | 5.26% |
| Total | 255 | 100.00% | 19 | 100.00% |
static int omninet_write_room(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct usb_serial *serial = port->serial;
struct usb_serial_port *wport = serial->port[1];
int room = 0; /* Default: no room */
if (test_bit(0, &wport->write_urbs_free))
room = wport->bulk_out_size - OMNINET_HEADERLEN;
dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
return room;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 51 | 60.71% | 1 | 14.29% |
| greg kroah-hartman | greg kroah-hartman | 13 | 15.48% | 2 | 28.57% |
| alan cox | alan cox | 12 | 14.29% | 2 | 28.57% |
| johan hovold | johan hovold | 7 | 8.33% | 1 | 14.29% |
| harvey harrison | harvey harrison | 1 | 1.19% | 1 | 14.29% |
| Total | 84 | 100.00% | 7 | 100.00% |
static void omninet_write_bulk_callback(struct urb *urb)
{
/* struct omninet_header *header = (struct omninet_header *)
urb->transfer_buffer; */
struct usb_serial_port *port = urb->context;
int status = urb->status;
set_bit(0, &port->write_urbs_free);
if (status) {
dev_dbg(&port->dev, "%s - nonzero write bulk status received: %d\n",
__func__, status);
return;
}
usb_serial_port_softint(port);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 36 | 56.25% | 2 | 20.00% |
| greg kroah-hartman | greg kroah-hartman | 18 | 28.12% | 4 | 40.00% |
| johan hovold | johan hovold | 7 | 10.94% | 1 | 10.00% |
| alan cox | alan cox | 1 | 1.56% | 1 | 10.00% |
| harvey harrison | harvey harrison | 1 | 1.56% | 1 | 10.00% |
| pete zaitcev | pete zaitcev | 1 | 1.56% | 1 | 10.00% |
| Total | 64 | 100.00% | 10 | 100.00% |
static void omninet_disconnect(struct usb_serial *serial)
{
struct usb_serial_port *wport = serial->port[1];
usb_kill_urb(wport->write_urb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| oliver neukum | oliver neukum | 12 | 40.00% | 1 | 33.33% |
| alan stern | alan stern | 9 | 30.00% | 1 | 33.33% |
| pre-git | pre-git | 9 | 30.00% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
module_usb_serial_driver(serial_drivers, id_table);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 506 | 49.95% | 6 | 10.53% |
| johan hovold | johan hovold | 171 | 16.88% | 9 | 15.79% |
| greg kroah-hartman | greg kroah-hartman | 100 | 9.87% | 21 | 36.84% |
| oliver neukum | oliver neukum | 64 | 6.32% | 1 | 1.75% |
| linus torvalds | linus torvalds | 49 | 4.84% | 8 | 14.04% |
| alan cox | alan cox | 44 | 4.34% | 4 | 7.02% |
| alan stern | alan stern | 37 | 3.65% | 2 | 3.51% |
| rusty russell | rusty russell | 19 | 1.88% | 1 | 1.75% |
| alessandro zummo | alessandro zummo | 14 | 1.38% | 1 | 1.75% |
| harvey harrison | harvey harrison | 6 | 0.59% | 1 | 1.75% |
| pete zaitcev | pete zaitcev | 1 | 0.10% | 1 | 1.75% |
| marton nemeth | marton nemeth | 1 | 0.10% | 1 | 1.75% |
| ganesh varadarajan | ganesh varadarajan | 1 | 0.10% | 1 | 1.75% |
| Total | 1013 | 100.00% | 57 | 100.00% |