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

• Lines: 227
• Date: Thu Jan 1 01:00:00 1970
• Orig file: v2.2.17/drivers/usb/keyboard.c
• Orig date: Fri Apr 21 12:46:37 2000

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/keyboard.c linux/drivers/usb/keyboard.c
@@ -1,226 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/malloc.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/sched.h>
-#include <linux/kbd_ll.h>
-#include "usb.h"
-
-#define PCKBD_PRESSED  0x00
-#define PCKBD_RELEASED 0x80
-#define PCKBD_NEEDS_E0 0x80
-
-#define USBKBD_MODIFIER_BASE  120
-#define USBKBD_KEYCODE_OFFSET 2
-#define USBKBD_KEYCODE_COUNT  6
-
-#define USBKBD_VALID_KEYCODE(key) ((unsigned char)(key) > 3)
-#define USBKBD_FIND_KEYCODE(down, key, count) \
-    ((unsigned char*) memscan((down), (key), (count)) < ((down) + (count)))
-
-#define USBKBD_REPEAT_DELAY (HZ / 4)
-#define USBKBD_REPEAT_RATE (HZ / 20)
-
-struct usb_keyboard
-{
-    struct usb_device *dev;
-    unsigned long down[2];
-    unsigned char repeat_key;
-    struct timer_list repeat_timer;
-    struct list_head list;
-};
-
-extern unsigned char usb_kbd_map[];
-
-static int usb_kbd_probe(struct usb_device *dev);
-static void usb_kbd_disconnect(struct usb_device *dev);
-static void usb_kbd_repeat(unsigned long dummy);
-
-static LIST_HEAD(usb_kbd_list);
-
-static struct usb_driver usb_kbd_driver =
-{
-    "keyboard",
-    usb_kbd_probe,
-    usb_kbd_disconnect,
-    {NULL, NULL}
-};
-
-
-static void
-usb_kbd_handle_key(unsigned char key, int down)
-{
-    int scancode = (int) usb_kbd_map[key];
-    if(scancode)
-    {
-        if(scancode & PCKBD_NEEDS_E0)
-        {
-            handle_scancode(0xe0, 1);
-        }
-        handle_scancode((scancode & ~PCKBD_NEEDS_E0), down);
-    }
-}
-
-static void
-usb_kbd_repeat(unsigned long dev_id)
-{
-    struct usb_keyboard *kbd = (struct usb_keyboard*) dev_id;
-
-    unsigned long flags;
-    save_flags(flags);
-    cli();
-
-    if(kbd->repeat_key)
-    {
-        usb_kbd_handle_key(kbd->repeat_key, 1);
-
-        /* reset repeat timer */
-        kbd->repeat_timer.function = usb_kbd_repeat;
-        kbd->repeat_timer.expires = jiffies + USBKBD_REPEAT_RATE;
-        kbd->repeat_timer.data = (unsigned long) kbd;
-        kbd->repeat_timer.prev = NULL;
-        kbd->repeat_timer.next = NULL;
-        add_timer(&kbd->repeat_timer);
-    }
-
-    restore_flags(flags);
-}
-
-static int
-usb_kbd_irq(int state, void *buffer, void *dev_id)
-{
-    struct usb_keyboard *kbd = (struct usb_keyboard*) dev_id;
-    unsigned long *down = (unsigned long*) buffer;
-
-    if(kbd->down[0] != down[0] || kbd->down[1] != down[1])
-    {
-        unsigned char *olddown, *newdown;
-        unsigned char modsdelta, key;
-        int i;
-
-        /* handle modifier change */
-        modsdelta = (*(unsigned char*) down ^ *(unsigned char*) kbd->down);
-        if(modsdelta)
-        {
-            for(i = 0; i < 8; i++)
-            {
-                if(modsdelta & 0x01)
-                {
-                    int pressed = (*(unsigned char*) down >> i) & 0x01;
-                    usb_kbd_handle_key(
-                        i + USBKBD_MODIFIER_BASE,
-                        pressed);
-                }
-                modsdelta >>= 1;
-            }
-        }
-
-        olddown = (unsigned char*) kbd->down + USBKBD_KEYCODE_OFFSET;
-        newdown = (unsigned char*) down + USBKBD_KEYCODE_OFFSET;
-
-        /* handle released keys */
-        for(i = 0; i < USBKBD_KEYCODE_COUNT; i++)
-        {
-            key = olddown[i];
-            if(USBKBD_VALID_KEYCODE(key)
-               && !USBKBD_FIND_KEYCODE(newdown, key, USBKBD_KEYCODE_COUNT))
-            {
-                usb_kbd_handle_key(key, 0);
-            }
-        }
-
-        /* handle pressed keys */
-        kbd->repeat_key = 0;
-        for(i = 0; i < USBKBD_KEYCODE_COUNT; i++)
-        {
-            key = newdown[i];
-            if(USBKBD_VALID_KEYCODE(key)
-               && !USBKBD_FIND_KEYCODE(olddown, key, USBKBD_KEYCODE_COUNT))
-            {
-                usb_kbd_handle_key(key, 1);
-                kbd->repeat_key = key;
-            }
-        }
-
-        /* set repeat timer if any keys were pressed */
-        if(kbd->repeat_key)
-        {
-            del_timer(&kbd->repeat_timer);
-            kbd->repeat_timer.function = usb_kbd_repeat;
-            kbd->repeat_timer.expires = jiffies + USBKBD_REPEAT_DELAY;
-            kbd->repeat_timer.data = (unsigned long) kbd;
-            kbd->repeat_timer.prev = NULL;
-            kbd->repeat_timer.next = NULL;
-            add_timer(&kbd->repeat_timer);
-        }
-
-        kbd->down[0] = down[0];
-        kbd->down[1] = down[1];
-    }
-
-    return 1;
-}
-
-static int
-usb_kbd_probe(struct usb_device *dev)
-{
-    struct usb_interface_descriptor *interface;
-    struct usb_endpoint_descriptor *endpoint;
-    struct usb_keyboard *kbd;
-
-    interface = &dev->config[0].interface[0];
-    endpoint = &interface->endpoint[0];
-
-    if(interface->bInterfaceClass != 3
-       || interface->bInterfaceSubClass != 1
-       || interface->bInterfaceProtocol != 1)
-    {
-        return -1;
-    }
-
-    printk(KERN_INFO "USB HID boot protocol keyboard detected.\n");
-
-    kbd = kmalloc(sizeof(struct usb_keyboard), GFP_KERNEL);
-    if(kbd)
-    {
-        memset(kbd, 0, sizeof(*kbd));
-        kbd->dev = dev;
-        dev->private = kbd;
-
-        usb_set_configuration(dev, dev->config[0].bConfigurationValue);
-        usb_set_protocol(dev, 0);
-        usb_set_idle(dev, 0, 0);
-        
-        usb_request_irq(dev,
-                        usb_rcvctrlpipe(dev, endpoint->bEndpointAddress),
-                        usb_kbd_irq,
-                        endpoint->bInterval,
-                        kbd);
-
-        list_add(&kbd->list, &usb_kbd_list);
-    }
-
-    return 0;
-}
-
-static void
-usb_kbd_disconnect(struct usb_device *dev)
-{
-    struct usb_keyboard *kbd = (struct usb_keyboard*) dev->private;
-    if(kbd)
-    {
-        dev->private = NULL;
-        list_del(&kbd->list);
-        del_timer(&kbd->repeat_timer);
-        kfree(kbd);
-    }
-
-    printk(KERN_INFO "USB HID boot protocol keyboard removed.\n");
-}
-
-int
-usb_kbd_init(void)
-{
-    usb_register(&usb_kbd_driver);
-    return 0;
-}