diff options
Diffstat (limited to 'drivers/usb/serial/usb_debug.c')
| -rw-r--r-- | drivers/usb/serial/usb_debug.c | 61 |
1 files changed, 47 insertions, 14 deletions
diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 5760f97ee508..ec9fff794b36 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -1,16 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 /* * USB Debug cable driver * * Copyright (C) 2006 Greg Kroah-Hartman <greg@kroah.com> - * - * 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. */ #include <linux/gfp.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/tty.h> #include <linux/module.h> #include <linux/usb.h> @@ -18,7 +14,7 @@ #define USB_DEBUG_MAX_PACKET_SIZE 8 #define USB_DEBUG_BRK_SIZE 8 -static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { +static const char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { 0x00, 0xff, 0x01, @@ -33,17 +29,37 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x0525, 0x127a) }, { }, }; -MODULE_DEVICE_TABLE(usb, id_table); + +static const struct usb_device_id dbc_id_table[] = { + { USB_DEVICE(0x1d6b, 0x0010) }, + { USB_DEVICE(0x1d6b, 0x0011) }, + { }, +}; + +static const struct usb_device_id id_table_combined[] = { + { USB_DEVICE(0x0525, 0x127a) }, + { USB_DEVICE(0x1d6b, 0x0010) }, + { USB_DEVICE(0x1d6b, 0x0011) }, + { }, +}; +MODULE_DEVICE_TABLE(usb, id_table_combined); /* This HW really does not support a serial break, so one will be * emulated when ever the break state is set to true. */ -static void usb_debug_break_ctl(struct tty_struct *tty, int break_state) +static int usb_debug_break_ctl(struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; + int ret; + if (!break_state) - return; - usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE); + return 0; + + ret = usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE); + if (ret < 0) + return ret; + + return 0; } static void usb_debug_process_read_urb(struct urb *urb) @@ -60,21 +76,38 @@ static void usb_debug_process_read_urb(struct urb *urb) usb_serial_generic_process_read_urb(urb); } +static void usb_debug_init_termios(struct tty_struct *tty) +{ + tty->termios.c_lflag &= ~(ECHO | ECHONL); +} + static struct usb_serial_driver debug_device = { .driver = { - .owner = THIS_MODULE, .name = "debug", }, .id_table = id_table, .num_ports = 1, .bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE, .break_ctl = usb_debug_break_ctl, + .init_termios = usb_debug_init_termios, + .process_read_urb = usb_debug_process_read_urb, +}; + +static struct usb_serial_driver dbc_device = { + .driver = { + .name = "xhci_dbc", + }, + .id_table = dbc_id_table, + .num_ports = 1, + .break_ctl = usb_debug_break_ctl, + .init_termios = usb_debug_init_termios, .process_read_urb = usb_debug_process_read_urb, }; static struct usb_serial_driver * const serial_drivers[] = { - &debug_device, NULL + &debug_device, &dbc_device, NULL }; -module_usb_serial_driver(serial_drivers, id_table); -MODULE_LICENSE("GPL"); +module_usb_serial_driver(serial_drivers, id_table_combined); +MODULE_DESCRIPTION("USB Debug cable driver"); +MODULE_LICENSE("GPL v2"); |