mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
3.4 KiB
126 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* USB Empeg empeg-car player driver |
|
* |
|
* Copyright (C) 2000, 2001 |
|
* Gary Brubaker ([email protected]) |
|
* |
|
* Copyright (C) 1999 - 2001 |
|
* Greg Kroah-Hartman ([email protected]) |
|
* |
|
* See Documentation/usb/usb-serial.rst for more information on using this |
|
* driver |
|
*/ |
|
|
|
#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/spinlock.h> |
|
#include <linux/uaccess.h> |
|
#include <linux/usb.h> |
|
#include <linux/usb/serial.h> |
|
|
|
#define DRIVER_AUTHOR "Greg Kroah-Hartman <[email protected]>, Gary Brubaker <[email protected]>" |
|
#define DRIVER_DESC "USB Empeg Mark I/II Driver" |
|
|
|
#define EMPEG_VENDOR_ID 0x084f |
|
#define EMPEG_PRODUCT_ID 0x0001 |
|
|
|
/* function prototypes for an empeg-car player */ |
|
static int empeg_startup(struct usb_serial *serial); |
|
static void empeg_init_termios(struct tty_struct *tty); |
|
|
|
static const struct usb_device_id id_table[] = { |
|
{ USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) }, |
|
{ } /* Terminating entry */ |
|
}; |
|
|
|
MODULE_DEVICE_TABLE(usb, id_table); |
|
|
|
static struct usb_serial_driver empeg_device = { |
|
.driver = { |
|
.owner = THIS_MODULE, |
|
.name = "empeg", |
|
}, |
|
.id_table = id_table, |
|
.num_ports = 1, |
|
.bulk_out_size = 256, |
|
.throttle = usb_serial_generic_throttle, |
|
.unthrottle = usb_serial_generic_unthrottle, |
|
.attach = empeg_startup, |
|
.init_termios = empeg_init_termios, |
|
}; |
|
|
|
static struct usb_serial_driver * const serial_drivers[] = { |
|
&empeg_device, NULL |
|
}; |
|
|
|
static int empeg_startup(struct usb_serial *serial) |
|
{ |
|
int r; |
|
|
|
if (serial->dev->actconfig->desc.bConfigurationValue != 1) { |
|
dev_err(&serial->dev->dev, "active config #%d != 1 ??\n", |
|
serial->dev->actconfig->desc.bConfigurationValue); |
|
return -ENODEV; |
|
} |
|
|
|
r = usb_reset_configuration(serial->dev); |
|
|
|
/* continue on with initialization */ |
|
return r; |
|
} |
|
|
|
static void empeg_init_termios(struct tty_struct *tty) |
|
{ |
|
struct ktermios *termios = &tty->termios; |
|
|
|
/* |
|
* The empeg-car player wants these particular tty settings. |
|
* You could, for example, change the baud rate, however the |
|
* player only supports 115200 (currently), so there is really |
|
* no point in support for changes to the tty settings. |
|
* (at least for now) |
|
* |
|
* The default requirements for this device are: |
|
*/ |
|
termios->c_iflag |
|
&= ~(IGNBRK /* disable ignore break */ |
|
| BRKINT /* disable break causes interrupt */ |
|
| PARMRK /* disable mark parity errors */ |
|
| ISTRIP /* disable clear high bit of input characters */ |
|
| INLCR /* disable translate NL to CR */ |
|
| IGNCR /* disable ignore CR */ |
|
| ICRNL /* disable translate CR to NL */ |
|
| IXON); /* disable enable XON/XOFF flow control */ |
|
|
|
termios->c_oflag |
|
&= ~OPOST; /* disable postprocess output characters */ |
|
|
|
termios->c_lflag |
|
&= ~(ECHO /* disable echo input characters */ |
|
| ECHONL /* disable echo new line */ |
|
| ICANON /* disable erase, kill, werase, and rprnt special characters */ |
|
| ISIG /* disable interrupt, quit, and suspend special characters */ |
|
| IEXTEN); /* disable non-POSIX special characters */ |
|
|
|
termios->c_cflag |
|
&= ~(CSIZE /* no size */ |
|
| PARENB /* disable parity bit */ |
|
| CBAUD); /* clear current baud rate */ |
|
|
|
termios->c_cflag |
|
|= CS8; /* character size 8 bits */ |
|
|
|
tty_encode_baud_rate(tty, 115200, 115200); |
|
} |
|
|
|
module_usb_serial_driver(serial_drivers, id_table); |
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR); |
|
MODULE_DESCRIPTION(DRIVER_DESC); |
|
MODULE_LICENSE("GPL v2");
|
|
|