patch-2.2.18 linux/drivers/usb/usbkbd.c

• Lines: 273
• Date: Fri Sep 15 22:02:30 2000
• Orig file: v2.2.17/drivers/usb/usbkbd.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/usbkbd.c linux/drivers/usb/usbkbd.c
@@ -0,0 +1,272 @@
+/*
+ * $Id: usbkbd.c,v 1.16 2000/08/14 21:05:26 vojtech Exp $
+ *
+ *  Copyright (c) 1999-2000 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/malloc.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/usb.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION("USB HID Boot Protocol keyboard driver");
+
+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;
+	unsigned char new[8];
+	unsigned char old[8];
+	struct urb irq, led;
+	devrequest 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;
+	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;
+	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;
+
+	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)
+{
+	struct usb_interface_descriptor *interface;
+	struct usb_endpoint_descriptor *endpoint;
+	struct usb_kbd *kbd;
+	int i, pipe, maxp;
+	char *buf;
+
+	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;
+
+	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->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.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;
+
+	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 on usb%d:%d.%d\n",
+		 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_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);