Commit | Line | Data |
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958e8741 GKH |
1 | /* |
2 | * USB Debug cable driver | |
3 | * | |
4 | * Copyright (C) 2006 Greg Kroah-Hartman <greg@kroah.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License version | |
8 | * 2 as published by the Free Software Foundation. | |
9 | */ | |
10 | ||
5a0e3ad6 | 11 | #include <linux/gfp.h> |
958e8741 | 12 | #include <linux/kernel.h> |
958e8741 GKH |
13 | #include <linux/tty.h> |
14 | #include <linux/module.h> | |
15 | #include <linux/usb.h> | |
16 | #include <linux/usb/serial.h> | |
17 | ||
71be4f81 | 18 | #define USB_DEBUG_MAX_PACKET_SIZE 8 |
98fcb5f7 | 19 | #define USB_DEBUG_BRK_SIZE 8 |
4f37fa54 | 20 | static const char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { |
98fcb5f7 JW |
21 | 0x00, |
22 | 0xff, | |
23 | 0x01, | |
24 | 0xfe, | |
25 | 0x00, | |
26 | 0xfe, | |
27 | 0x01, | |
28 | 0xff, | |
29 | }; | |
71be4f81 | 30 | |
7d40d7e8 | 31 | static const struct usb_device_id id_table[] = { |
958e8741 GKH |
32 | { USB_DEVICE(0x0525, 0x127a) }, |
33 | { }, | |
34 | }; | |
57fb4727 LB |
35 | |
36 | static const struct usb_device_id dbc_id_table[] = { | |
37 | { USB_DEVICE(0x1d6b, 0x0004) }, | |
38 | { }, | |
39 | }; | |
40 | ||
41 | static const struct usb_device_id id_table_combined[] = { | |
42 | { USB_DEVICE(0x0525, 0x127a) }, | |
43 | { USB_DEVICE(0x1d6b, 0x0004) }, | |
44 | { }, | |
45 | }; | |
46 | MODULE_DEVICE_TABLE(usb, id_table_combined); | |
958e8741 | 47 | |
98fcb5f7 JW |
48 | /* This HW really does not support a serial break, so one will be |
49 | * emulated when ever the break state is set to true. | |
50 | */ | |
51 | static void usb_debug_break_ctl(struct tty_struct *tty, int break_state) | |
52 | { | |
53 | struct usb_serial_port *port = tty->driver_data; | |
54 | if (!break_state) | |
55 | return; | |
56 | usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE); | |
57 | } | |
58 | ||
ac3695fb | 59 | static void usb_debug_process_read_urb(struct urb *urb) |
98fcb5f7 JW |
60 | { |
61 | struct usb_serial_port *port = urb->context; | |
62 | ||
63 | if (urb->actual_length == USB_DEBUG_BRK_SIZE && | |
e63aa508 JH |
64 | memcmp(urb->transfer_buffer, USB_DEBUG_BRK, |
65 | USB_DEBUG_BRK_SIZE) == 0) { | |
98fcb5f7 | 66 | usb_serial_handle_break(port); |
98fcb5f7 JW |
67 | return; |
68 | } | |
69 | ||
ac3695fb | 70 | usb_serial_generic_process_read_urb(urb); |
98fcb5f7 JW |
71 | } |
72 | ||
958e8741 GKH |
73 | static struct usb_serial_driver debug_device = { |
74 | .driver = { | |
75 | .owner = THIS_MODULE, | |
76 | .name = "debug", | |
77 | }, | |
78 | .id_table = id_table, | |
958e8741 | 79 | .num_ports = 1, |
7288d755 | 80 | .bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE, |
98fcb5f7 | 81 | .break_ctl = usb_debug_break_ctl, |
ac3695fb | 82 | .process_read_urb = usb_debug_process_read_urb, |
958e8741 GKH |
83 | }; |
84 | ||
57fb4727 LB |
85 | static struct usb_serial_driver dbc_device = { |
86 | .driver = { | |
87 | .owner = THIS_MODULE, | |
88 | .name = "xhci_dbc", | |
89 | }, | |
90 | .id_table = dbc_id_table, | |
91 | .num_ports = 1, | |
92 | .break_ctl = usb_debug_break_ctl, | |
93 | .process_read_urb = usb_debug_process_read_urb, | |
94 | }; | |
95 | ||
29618e9f | 96 | static struct usb_serial_driver * const serial_drivers[] = { |
57fb4727 | 97 | &debug_device, &dbc_device, NULL |
29618e9f AS |
98 | }; |
99 | ||
57fb4727 | 100 | module_usb_serial_driver(serial_drivers, id_table_combined); |
958e8741 | 101 | MODULE_LICENSE("GPL"); |