www.pudn.com > usbold11.rar > usbkbd.c
/*
* usbkbd.c Version 0.1
*
* Copyright (c) 1999 Vojtech Pavlik
*
* USB HIDBP Keyboard support
*
* Sponsored by SuSE
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to , or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#include
#include
#include
#include
#include
#include
MODULE_AUTHOR("Vojtech Pavlik ");
static unsigned char usb_kbd_keycode[256] = {
0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95,
120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113,
115,114, 0, 0, 0, 0, 0,124, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
150,158,159,128,136,177,178,176,142,152,173,140
};
struct usb_kbd {
struct input_dev dev;
unsigned char new[8];
unsigned char old[8];
struct urb irq, led;
devrequest dr;
unsigned char leds;
};
static void usb_kbd_irq(struct urb *urb)
{
struct usb_kbd *kbd = urb->context;
int i;
if (urb->status) return;
for (i = 0; i < 8; i++)
input_report_key(&kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
for (i = 2; i < 8; i++) {
if (kbd->old[i] > 3 && memscan(kbd->new + 2, kbd->old[i], 6) == kbd->new + 8) {
if (usb_kbd_keycode[kbd->old[i]])
input_report_key(&kbd->dev, usb_kbd_keycode[kbd->old[i]], 0);
else
info("Unknown key (scancode %#x) released.", kbd->old[i]);
}
if (kbd->new[i] > 3 && memscan(kbd->old + 2, kbd->new[i], 6) == kbd->old + 8) {
if (usb_kbd_keycode[kbd->new[i]])
input_report_key(&kbd->dev, usb_kbd_keycode[kbd->new[i]], 1);
else
info("Unknown key (scancode %#x) pressed.", kbd->new[i]);
}
}
memcpy(kbd->old, kbd->new, 8);
}
int usb_kbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct usb_kbd *kbd = dev->private;
if (type != EV_LED) return -1;
if (kbd->led.status == -EINPROGRESS) {
warn("had to kill led urb");
usb_unlink_urb(&kbd->led);
}
kbd->leds = (!!test_bit(LED_KANA, dev->led) << 3) | (!!test_bit(LED_COMPOSE, dev->led) << 3) |
(!!test_bit(LED_SCROLLL, dev->led) << 2) | (!!test_bit(LED_CAPSL, dev->led) << 1) |
(!!test_bit(LED_NUML, dev->led));
if (usb_submit_urb(&kbd->led)) {
err("usb_submit_urb(leds) failed");
return -1;
}
return 0;
}
static void usb_kbd_led(struct urb *urb)
{
if (urb->status)
warn("led urb status %d received", urb->status);
}
static void *usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
{
struct usb_interface_descriptor *interface;
struct usb_endpoint_descriptor *endpoint;
struct usb_kbd *kbd;
int i;
if (dev->descriptor.bNumConfigurations != 1) return NULL;
interface = dev->config[0].interface[ifnum].altsetting + 0;
if (interface->bInterfaceClass != 3) return NULL;
if (interface->bInterfaceSubClass != 1) return NULL;
if (interface->bInterfaceProtocol != 1) return NULL;
if (interface->bNumEndpoints != 1) return NULL;
endpoint = interface->endpoint + 0;
if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
if ((endpoint->bmAttributes & 3) != 3) return NULL;
usb_set_protocol(dev, interface->bInterfaceNumber, 0);
usb_set_idle(dev, interface->bInterfaceNumber, 0, 0);
if (!(kbd = kmalloc(sizeof(struct usb_kbd), GFP_KERNEL))) return NULL;
memset(kbd, 0, sizeof(struct usb_kbd));
kbd->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_LED) | BIT(EV_REP);
kbd->dev.ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL) | BIT(LED_COMPOSE) | BIT(LED_KANA);
for (i = 0; i < 255; i++)
set_bit(usb_kbd_keycode[i], kbd->dev.keybit);
clear_bit(0, kbd->dev.keybit);
kbd->dev.private = kbd;
kbd->dev.event = usb_kbd_event;
{
int pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
int maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
FILL_INT_URB(&kbd->irq, dev, pipe, kbd->new, maxp > 8 ? 8 : maxp,
usb_kbd_irq, kbd, endpoint->bInterval);
}
kbd->dr.requesttype = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
kbd->dr.request = USB_REQ_SET_REPORT;
kbd->dr.value = 0x200;
kbd->dr.index = interface->bInterfaceNumber;
kbd->dr.length = 1;
FILL_CONTROL_URB(&kbd->led, dev, usb_sndctrlpipe(dev, 0),
(void*) &kbd->dr, &kbd->leds, 1, usb_kbd_led, kbd);
if (usb_submit_urb(&kbd->irq)) {
kfree(kbd);
return NULL;
}
input_register_device(&kbd->dev);
printk(KERN_INFO "input%d: USB HIDBP keyboard\n", kbd->dev.number);
return kbd;
}
static void usb_kbd_disconnect(struct usb_device *dev, void *ptr)
{
struct usb_kbd *kbd = ptr;
usb_unlink_urb(&kbd->irq);
input_unregister_device(&kbd->dev);
kfree(kbd);
}
static struct usb_driver usb_kbd_driver = {
name: "keyboard",
probe: usb_kbd_probe,
disconnect: usb_kbd_disconnect
};
static int __init usb_kbd_init(void)
{
usb_register(&usb_kbd_driver);
return 0;
}
static void __exit usb_kbd_exit(void)
{
usb_deregister(&usb_kbd_driver);
}
module_init(usb_kbd_init);
module_exit(usb_kbd_exit);