atarimouse.c
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上传日期:2013-02-24
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- /*
- * Atari Mouse Driver for Linux
- * by Robert de Vries (robert@and.nl) 19Jul93
- *
- * 16 Nov 1994 Andreas Schwab
- * Compatibility with busmouse
- * Support for three button mouse (shamelessly stolen from MiNT)
- * third button wired to one of the joystick directions on joystick 1
- *
- * 1996/02/11 Andreas Schwab
- * Module support
- * Allow multiple open's
- *
- * Converted to use new generic busmouse code. 5 Apr 1998
- * Russell King <rmk@arm.uk.linux.org>
- */
- #include <linux/module.h>
- #include <linux/sched.h>
- #include <linux/errno.h>
- #include <linux/miscdevice.h>
- #include <linux/mm.h>
- #include <linux/random.h>
- #include <linux/poll.h>
- #include <linux/init.h>
- #include <linux/logibusmouse.h>
- #include <asm/setup.h>
- #include <asm/atarikb.h>
- #include <asm/uaccess.h>
- #include "busmouse.h"
- static int msedev;
- static int mouse_threshold[2] = {2,2};
- MODULE_PARM(mouse_threshold, "2i");
- extern int atari_mouse_buttons;
- static void atari_mouse_interrupt(char *buf)
- {
- int buttons;
- /* ikbd_mouse_disable(); */
- buttons = ((buf[0] & 1)
- | ((buf[0] & 2) << 1)
- | (atari_mouse_buttons & 2));
- atari_mouse_buttons = buttons;
- busmouse_add_movementbuttons(msedev, buf[1], -buf[2], buttons ^ 7);
- /* ikbd_mouse_rel_pos(); */
- }
- static int release_mouse(struct inode *inode, struct file *file)
- {
- ikbd_mouse_disable();
- atari_mouse_interrupt_hook = NULL;
- return 0;
- }
- static int open_mouse(struct inode *inode, struct file *file)
- {
- atari_mouse_buttons = 0;
- ikbd_mouse_y0_top ();
- ikbd_mouse_thresh (mouse_threshold[0], mouse_threshold[1]);
- ikbd_mouse_rel_pos();
- atari_mouse_interrupt_hook = atari_mouse_interrupt;
- return 0;
- }
- static struct busmouse atarimouse = {
- ATARIMOUSE_MINOR, "atarimouse", THIS_MODULE, open_mouse, release_mouse, 0
- };
- static int __init atari_mouse_init(void)
- {
- if (!MACH_IS_ATARI)
- return -ENODEV;
- msedev = register_busmouse(&atarimouse);
- if (msedev < 0)
- printk(KERN_WARNING "Unable to register Atari mouse driver.n");
- else
- printk(KERN_INFO "Atari mouse installed.n");
- return msedev < 0 ? msedev : 0;
- }
- #ifndef MODULE
- #define MIN_THRESHOLD 1
- #define MAX_THRESHOLD 20 /* more seems not reasonable... */
- static int __init atari_mouse_setup( char *str )
- {
- int ints[8];
- str = get_options(str, ARRAY_SIZE(ints), ints);
- if (ints[0] < 1) {
- printk(KERN_ERR "atari_mouse_setup: no arguments!n" );
- return 0;
- }
- else if (ints[0] > 2) {
- printk(KERN_WARNING "atari_mouse_setup: too many argumentsn" );
- }
- if (ints[1] < MIN_THRESHOLD || ints[1] > MAX_THRESHOLD)
- printk(KERN_WARNING "atari_mouse_setup: bad threshold value (ignored)n" );
- else {
- mouse_threshold[0] = ints[1];
- mouse_threshold[1] = ints[1];
- if (ints[0] > 1) {
- if (ints[2] < MIN_THRESHOLD || ints[2] > MAX_THRESHOLD)
- printk(KERN_WARNING "atari_mouse_setup: bad threshold value (ignored)n" );
- else
- mouse_threshold[1] = ints[2];
- }
- }
- return 1;
- }
- __setup("atarimouse=",atari_mouse_setup);
- #endif /* !MODULE */
- static void __exit atari_mouse_cleanup (void)
- {
- unregister_busmouse(msedev);
- }
- module_init(atari_mouse_init);
- module_exit(atari_mouse_cleanup);
- MODULE_LICENSE("GPL");