usbkbd.c
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- /*
- * $Id: usbkbd.c,v 1.20 2001/04/26 08:34:49 vojtech Exp $
- *
- * Copyright (c) 1999-2001 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 <vojtech@suse.cz>, or by paper mail:
- * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
- */
- #include <linux/kernel.h>
- #include <linux/slab.h>
- #include <linux/module.h>
- #include <linux/input.h>
- #include <linux/init.h>
- #include <linux/usb.h>
- /*
- * Version Information
- */
- #define DRIVER_VERSION ""
- #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@suse.cz>"
- #define DRIVER_DESC "USB HID Boot Protocol keyboard driver"
- MODULE_AUTHOR( DRIVER_AUTHOR );
- MODULE_DESCRIPTION( DRIVER_DESC );
- MODULE_LICENSE("GPL");
- 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, 0,124, 0,181,182,183,184,185,186,187,188,189,
- 190,191,192,193,194,195,196,197,198, 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;
- struct usb_device *usbdev;
- unsigned char new[8];
- unsigned char old[8];
- struct urb irq, led;
- struct usb_ctrlrequest dr;
- unsigned char leds, newleds;
- char name[128];
- int open;
- };
- 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;
- kbd->newleds = (!!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 (kbd->led.status == -EINPROGRESS)
- return 0;
- if (kbd->leds == kbd->newleds)
- return 0;
- kbd->leds = kbd->newleds;
- kbd->led.dev = kbd->usbdev;
- if (usb_submit_urb(&kbd->led))
- err("usb_submit_urb(leds) failed");
- return 0;
- }
- static void usb_kbd_led(struct urb *urb)
- {
- struct usb_kbd *kbd = urb->context;
- if (urb->status)
- warn("led urb status %d received", urb->status);
-
- if (kbd->leds == kbd->newleds)
- return;
- kbd->leds = kbd->newleds;
- kbd->led.dev = kbd->usbdev;
- if (usb_submit_urb(&kbd->led))
- err("usb_submit_urb(leds) failed");
- }
- static int usb_kbd_open(struct input_dev *dev)
- {
- struct usb_kbd *kbd = dev->private;
- if (kbd->open++)
- return 0;
- kbd->irq.dev = kbd->usbdev;
- if (usb_submit_urb(&kbd->irq))
- return -EIO;
- return 0;
- }
- static void usb_kbd_close(struct input_dev *dev)
- {
- struct usb_kbd *kbd = dev->private;
- if (!--kbd->open)
- usb_unlink_urb(&kbd->irq);
- }
- static void *usb_kbd_probe(struct usb_device *dev, unsigned int ifnum,
- const struct usb_device_id *id)
- {
- struct usb_interface *iface;
- struct usb_interface_descriptor *interface;
- struct usb_endpoint_descriptor *endpoint;
- struct usb_kbd *kbd;
- int i, pipe, maxp;
- char *buf;
- iface = &dev->actconfig->interface[ifnum];
- interface = &iface->altsetting[iface->act_altsetting];
- if (interface->bNumEndpoints != 1) return NULL;
- endpoint = interface->endpoint + 0;
- if (!(endpoint->bEndpointAddress & 0x80)) return NULL;
- if ((endpoint->bmAttributes & 3) != 3) return NULL;
- pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
- maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
- 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->usbdev = dev;
- 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;
- kbd->dev.open = usb_kbd_open;
- kbd->dev.close = usb_kbd_close;
- FILL_INT_URB(&kbd->irq, dev, pipe, kbd->new, maxp > 8 ? 8 : maxp,
- usb_kbd_irq, kbd, endpoint->bInterval);
- kbd->dr.bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
- kbd->dr.bRequest = USB_REQ_SET_REPORT;
- kbd->dr.wValue = 0x200;
- kbd->dr.wIndex = interface->bInterfaceNumber;
- kbd->dr.wLength = 1;
- kbd->dev.name = kbd->name;
- kbd->dev.idbus = BUS_USB;
- kbd->dev.idvendor = dev->descriptor.idVendor;
- kbd->dev.idproduct = dev->descriptor.idProduct;
- kbd->dev.idversion = dev->descriptor.bcdDevice;
- if (!(buf = kmalloc(63, GFP_KERNEL))) {
- kfree(kbd);
- return NULL;
- }
- if (dev->descriptor.iManufacturer &&
- usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
- strcat(kbd->name, buf);
- if (dev->descriptor.iProduct &&
- usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
- sprintf(kbd->name, "%s %s", kbd->name, buf);
- if (!strlen(kbd->name))
- sprintf(kbd->name, "USB HIDBP Keyboard %04x:%04x",
- kbd->dev.idvendor, kbd->dev.idproduct);
- kfree(buf);
- FILL_CONTROL_URB(&kbd->led, dev, usb_sndctrlpipe(dev, 0),
- (void*) &kbd->dr, &kbd->leds, 1, usb_kbd_led, kbd);
-
- input_register_device(&kbd->dev);
- printk(KERN_INFO "input%d: %s on usb%d:%d.%dn",
- kbd->dev.number, kbd->name, dev->bus->busnum, dev->devnum, ifnum);
- 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_device_id usb_kbd_id_table [] = {
- { USB_INTERFACE_INFO(3, 1, 1) },
- { } /* Terminating entry */
- };
- MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);
- static struct usb_driver usb_kbd_driver = {
- name: "keyboard",
- probe: usb_kbd_probe,
- disconnect: usb_kbd_disconnect,
- id_table: usb_kbd_id_table,
- };
- static int __init usb_kbd_init(void)
- {
- usb_register(&usb_kbd_driver);
- info(DRIVER_VERSION ":" DRIVER_DESC);
- return 0;
- }
- static void __exit usb_kbd_exit(void)
- {
- usb_deregister(&usb_kbd_driver);
- }
- module_init(usb_kbd_init);
- module_exit(usb_kbd_exit);