Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
/*
 * USB Empeg empeg-car player driver
 *
 *	Copyright (C) 2000, 2001
 *	    Gary Brubaker (xavyer@ix.netcom.com)
 *
 *	Copyright (C) 1999 - 2001
 *	    Greg Kroah-Hartman (greg@kroah.com)
 *
 * 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 <greg@kroah.com>, Gary Brubaker <xavyer@ix.netcom.com>"
#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");