__initfunc(int ms_bus_mouse_init(void))
{
int mse_byte, i;
mouse.present = mouse.active = mouse.ready = 0;
mouse.buttons = 0x80;
mouse.dx = mouse.dy = 0;
mouse.wait = NULL;
if (check_region(MS_MSE_CONTROL_PORT, 0x04))
return -ENODEV;
if (inb_p(MS_MSE_SIGNATURE_PORT) == 0xde) {
mse_byte = inb_p(MS_MSE_SIGNATURE_PORT);
for (i = 0; i < 4; i++) {
if (inb_p(MS_MSE_SIGNATURE_PORT) == 0xde) {
if (inb_p(MS_MSE_SIGNATURE_PORT) == mse_byte)
mouse.present = 1;
else
mouse.present = 0;
} else
mouse.present = 0;
}
}
if (mouse.present == 0)
return -EIO;
MS_MSE_INT_OFF();
request_region(MS_MSE_CONTROL_PORT, 0x04, "MS Busmouse");
printk(KERN_INFO "Microsoft BusMouse detected and installed.\n");
misc_register(&ms_bus_mouse);
return 0;
}
unsigned long ms_bus_mouse_init(unsigned long kmem_start)
{
int mse_byte, i;
mouse.present = mouse.active = mouse.ready = 0;
mouse.buttons = 0x80;
mouse.dx = mouse.dy = 0;
mouse.wait = NULL;
if (inb_p(MS_MSE_SIGNATURE_PORT) == 0xde) {
mse_byte = inb_p(MS_MSE_SIGNATURE_PORT);
for (i = 0; i < 4; i++) {
if (inb_p(MS_MSE_SIGNATURE_PORT) == 0xde) {
if (inb_p(MS_MSE_SIGNATURE_PORT) == mse_byte)
mouse.present = 1;
else
mouse.present = 0;
} else
mouse.present = 0;
}
}
if (mouse.present == 0) {
return kmem_start;
}
MS_MSE_INT_OFF();
printk("Microsoft BusMouse detected and installed.\n");
return kmem_start;
}
static int release_mouse(struct inode * inode, struct file * file)
{
fasync_mouse(-1, file, 0);
if (--mouse.active)
return 0;
MS_MSE_INT_OFF();
mouse.ready = 0;
free_irq(mouse_irq, NULL);
MOD_DEC_USE_COUNT;
return 0;
}
static int __init ms_bus_mouse_init(void)
{
int present = 0;
int mse_byte, i;
if (check_region(MS_MSE_CONTROL_PORT, 0x04))
return -ENODEV;
if (inb_p(MS_MSE_SIGNATURE_PORT) == 0xde) {
mse_byte = inb_p(MS_MSE_SIGNATURE_PORT);
for (i = 0; i < 4; i++) {
if (inb_p(MS_MSE_SIGNATURE_PORT) == 0xde) {
if (inb_p(MS_MSE_SIGNATURE_PORT) == mse_byte)
present = 1;
else
present = 0;
} else
present = 0;
}
}
if (present == 0)
return -EIO;
if (!request_region(MS_MSE_CONTROL_PORT, 0x04, "MS Busmouse"))
return -EIO;
MS_MSE_INT_OFF();
msedev = register_busmouse(&msbusmouse);
if (msedev < 0) {
printk(KERN_WARNING "Unable to register msbusmouse driver.\n");
release_region(MS_MSE_CONTROL_PORT, 0x04);
}
else
printk(KERN_INFO "Microsoft BusMouse detected and installed.\n");
return msedev < 0 ? msedev : 0;
}
static int release_mouse(struct inode * inode, struct file * file)
{
MS_MSE_INT_OFF();
free_irq(mouse_irq, NULL);
return 0;
}
static void release_mouse(struct inode * inode, struct file * file)
{
MS_MSE_INT_OFF();
mouse.active = mouse.ready = 0;
free_irq(MOUSE_IRQ);
}
