patch-2.1.132 linux/drivers/char/macmouse.c

• Lines: 313
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.131/linux/drivers/char/macmouse.c
• Orig date: Wed Aug 26 11:37:37 1998

diff -u --recursive --new-file v2.1.131/linux/drivers/char/macmouse.c linux/drivers/char/macmouse.c
@@ -1,312 +0,0 @@
-/*
- * Macintosh ADB Mouse driver for Linux
- *
- * 27 Oct 1997 Michael Schmitz
- *
- * Apple mouse protocol according to:
- *
- * Device code shamelessly stolen from:
- */
-/*
- * 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
- */
-
-#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 <asm/setup.h>
-#include <asm/mac_mouse.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-
-static struct mouse_status mouse;
-static int mac_mouse_x_threshold = 2, mac_mouse_y_threshold = 2;
-static int mac_mouse_buttons = 0;
-
-extern void (*mac_mouse_interrupt_hook) (char *, int);
-extern int mac_emulate_button2;
-extern int mac_emulate_button3;
-
-extern int console_loglevel;
-
-/*
- *	XXX: need to figure out what ADB mouse packets mean ... 
- *	This is the stuff stolen from the Atari driver ...
- */
-static void mac_mouse_interrupt(char *buf, int nb)
-{
-    static int buttons = 7;	/* all mouse buttons _up_ !! */
-
-  /*
-    Handler 1 -- 100cpi original Apple mouse protocol.
-    Handler 2 -- 200cpi original Apple mouse protocol.
-
-    For Apple's standard one-button mouse protocol the data array will
-    contain the following values:
-
-                BITS    COMMENTS
-    data[0] = 0000 0000 ADB packet identifer.
-    data[1] = ???? ???? (?)
-    data[2] = ???? ??00 Bits 0-1 should be zero for a mouse device.
-    data[3] = bxxx xxxx First button and x-axis motion.
-    data[4] = byyy yyyy Second button and y-axis motion.
-
-    NOTE: data[0] is confirmed by the parent function and need not be
-    checked here.
-  */
-
-  /*
-    Handler 4 -- Apple Extended mouse protocol.
-
-    For Apple's 3-button mouse protocol the data array will contain the
-    following values:
-
-		BITS    COMMENTS
-    data[0] = 0000 0000 ADB packet identifer.
-    data[1] = 0100 0000 Extended protocol register.
-	      Bits 6-7 are the device id, which should be 1.
-	      Bits 4-5 are resolution which is in "units/inch".
-	      The Logitech MouseMan returns these bits clear but it has
-	      200/300cpi resolution.
-	      Bits 0-3 are unique vendor id.
-    data[2] = 0011 1100 Bits 0-1 should be zero for a mouse device.
-	      Bits 2-3 should be 8 + 4.
-		      Bits 4-7 should be 3 for a mouse device.
-    data[3] = bxxx xxxx Left button and x-axis motion.
-    data[4] = byyy yyyy Second button and y-axis motion.
-    data[5] = byyy bxxx Third button and fourth button.  
-    	      Y is additiona. high bits of y-axis motion.  
-    	      X is additional high bits of x-axis motion.
-
-    NOTE: data[0] and data[2] are confirmed by the parent function and
-    need not be checked here.
-  */
-
-    /*
-     * 'buttons' here means 'button down' states!
-     * Button 1 (left)  : bit 2, busmouse button 3
-     * Button 2 (right) : bit 0, busmouse button 1
-     * Button 3 (middle): bit 1, busmouse button 2
-     */
-
-    /* x/y and buttons swapped */
-    
-    if (buf[0] ==  0)	{				/* real packet : use buttons? */
-#ifdef DEBUG_ADBMOUSE
-	if (console_loglevel >= 8)
-	    printk("mac_mouse: real data; "); 
-#endif
-	/* button 1 (left, bit 2) : always significant ! */
-	buttons = (buttons&3) | (buf[3] & 0x80 ? 4 : 0); /* 1+2 unchanged */
-	/* button 2 (right, bit 0) present ? */
-	if ( !mac_emulate_button2 ) 
-	    buttons = (buttons&6) | (buf[4] & 0x80 ? 1 : 0); /* 2+3 unchanged */
-	/* button 2 (middle) present? */
-	/* data valid only if extended mouse format ! (buf[3] = 0 else)*/
-	if ( !mac_emulate_button3 && buf[1]&0x40 )
-	    buttons = (buttons&5) | (buf[5] & 0x80 ? 2 : 0); /* 1+3 unchanged */
-    } else {					/* fake packet : use 2+3 */
-#ifdef DEBUG_ADBMOUSE
-	if (console_loglevel >= 8)
-	    printk("mac_mouse: fake data; "); 
-#endif
-	/* we only see state changes here, but the fake driver takes care
-	 * to preserve state... button 1 state must stay unchanged! */
-	buttons = (buttons&4) | ((buf[4] & 0x80 ? 1 : 0) | (buf[5] & 0x80 ? 2 : 0));
-    }
-
-    add_mouse_randomness(((~buttons & 7) << 16) + ((buf[2]&0x7f) << 8) + (buf[1]&0x7f));
-    mouse.buttons = buttons & 7;
-    mouse.dx += ((buf[4]&0x7f) < 64 ? (buf[4]&0x7f) : (buf[4]&0x7f)-128 );
-    mouse.dy -= ((buf[3]&0x7f) < 64 ? (buf[3]&0x7f) : (buf[3]&0x7f)-128 );
-
-#ifdef DEBUG_ADBMOUSE
-    if (console_loglevel >= 8)
-        printk(" %X %X %X buttons %x dx %d dy %d \n", 
-               buf[3], buf[4], buf[5], mouse.buttons, mouse.dx, mouse.dy);
-#endif
- 
-    mouse.ready = 1;
-    wake_up_interruptible(&mouse.wait);
-    if (mouse.fasyncptr)
-	kill_fasync(mouse.fasyncptr, SIGIO);
-
-}
-
-static int fasync_mouse(int fd, struct file *filp, int on)
-{
-	int retval;
-
-	retval = fasync_helper(fd, filp, on, &mouse.fasyncptr);
-	if (retval < 0)
-		return retval;
-	return 0;
-}
-
-static int release_mouse(struct inode *inode, struct file *file)
-{
-    fasync_mouse(-1, file, 0);
-    if (--mouse.active)
-      return 0;
-
-    mac_mouse_interrupt_hook = NULL;
-    MOD_DEC_USE_COUNT;
-    return 0;
-}
-
-static int open_mouse(struct inode *inode, struct file *file)
-{
-    if (mouse.active++)
-	return 0;
-	
-    mouse.ready = 0;
-
-    mouse.dx = mouse.dy = 0;
-    mac_mouse_buttons = 0;
-    MOD_INC_USE_COUNT;
-    mac_mouse_interrupt_hook = mac_mouse_interrupt;
-    return 0;
-}
-
-static ssize_t write_mouse(struct file *file, const char *buffer,
-			   size_t count, loff_t *ppos)
-{
-    return -EINVAL;
-}
-
-static ssize_t read_mouse(struct file *file, char *buffer, size_t count,
-			  loff_t *ppos)
-{
-    int dx, dy, buttons;
-
-    if (count < 3)
-	return -EINVAL;
-    if (!mouse.ready)
-	return -EAGAIN;
-    dx = mouse.dx;
-    dy = mouse.dy;
-    buttons = mouse.buttons;
-    if (dx > 127)
-      dx = 127;
-    else if (dx < -128)
-      dx = -128;
-    if (dy > 127)
-      dy = 127;
-    else if (dy < -128)
-      dy = -128;
-    mouse.dx -= dx;
-    mouse.dy -= dy;
-    if (mouse.dx == 0 && mouse.dy == 0)
-      mouse.ready = 0;
-    if (put_user(buttons | 0x80, buffer++) ||
-	put_user((char) dx, buffer++) ||
-	put_user((char) dy, buffer++))
-      return -EFAULT;
-    if (count > 3)
-      if (clear_user(buffer, count - 3))
-	return -EFAULT;
-    return count;
-}
-
-static unsigned int mouse_poll(struct file *file, poll_table *wait)
-{
-	poll_wait(file, &mouse.wait, wait);
-	if (mouse.ready)
-		return POLLIN | POLLRDNORM;
-	return 0;
-}
-
-struct file_operations mac_mouse_fops = {
-    NULL,		/* mouse_seek */
-    read_mouse,
-    write_mouse,
-    NULL,		/* mouse_readdir */
-    mouse_poll,
-    NULL,		/* mouse_ioctl */
-    NULL,		/* mouse_mmap */
-    open_mouse,
-    NULL,		/* flush */
-    release_mouse,
-    NULL,
-    fasync_mouse,
-};
-
-#define ADB_MOUSE_MINOR	10
-
-static struct miscdevice mac_mouse = {
-    ADB_MOUSE_MINOR, "adbmouse", &mac_mouse_fops
-};
-
-__initfunc(int mac_mouse_init(void))
-{
-    mouse.active = 0;
-    mouse.ready = 0;
-    mouse.wait = NULL;
-
-    if (!MACH_IS_MAC)
-	return -ENODEV;
-
-    printk(KERN_INFO "Macintosh ADB mouse installed.\n");
-    misc_register(&mac_mouse);
-    return 0;
-}
-
-
-#define	MIN_THRESHOLD 1
-#define	MAX_THRESHOLD 20	/* more seems not reasonable... */
-
-__initfunc(void mac_mouse_setup(char *str, int *ints))
-{
-    if (ints[0] < 1) {
-	printk( "mac_mouse_setup: no arguments!\n" );
-	return;
-    }
-    else if (ints[0] > 2) {
-	printk( "mac_mouse_setup: too many arguments\n" );
-    }
-
-    if (ints[1] < MIN_THRESHOLD || ints[1] > MAX_THRESHOLD)
-	printk( "mac_mouse_setup: bad threshold value (ignored)\n" );
-    else {
-	mac_mouse_x_threshold = ints[1];
-	mac_mouse_y_threshold = ints[1];
-	if (ints[0] > 1) {
-	    if (ints[2] < MIN_THRESHOLD || ints[2] > MAX_THRESHOLD)
-		printk("mac_mouse_setup: bad threshold value (ignored)\n" );
-	    else
-		mac_mouse_y_threshold = ints[2];
-	}
-    }
-	
-}
-
-#ifdef MODULE
-#include <asm/setup.h>
-
-int init_module(void)
-{
-    return mac_mouse_init();
-}
-
-void cleanup_module(void)
-{
-    misc_deregister(&mac_mouse);
-}
-#endif