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Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/serial/empeg.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c new file mode 100644 index 000000000..405e835e9 --- /dev/null +++ b/drivers/usb/serial/empeg.c @@ -0,0 +1,126 @@ +// 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"); |