187 lines
3.9 KiB
C
187 lines
3.9 KiB
C
/*
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* Copyright © 1999 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <kdrive-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xproto.h>
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#include <X11/Xpoll.h>
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "kdrive.h"
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static int
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Ps2ReadBytes (int fd, char *buf, int len, int min)
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{
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int n, tot;
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fd_set set;
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struct timeval tv;
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tot = 0;
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while (len)
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{
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n = read (fd, buf, len);
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if (n > 0)
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{
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tot += n;
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buf += n;
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len -= n;
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}
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if (tot % min == 0)
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break;
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FD_ZERO (&set);
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FD_SET (fd, &set);
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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n = select (fd + 1, &set, 0, 0, &tv);
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if (n <= 0)
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break;
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}
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return tot;
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}
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char *Ps2Names[] = {
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"/dev/psaux",
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/* "/dev/mouse", */
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"/dev/input/mice",
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};
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#define NUM_PS2_NAMES (sizeof (Ps2Names) / sizeof (Ps2Names[0]))
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static void
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Ps2Read (int ps2Port, void *closure)
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{
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unsigned char buf[3 * 200];
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unsigned char *b;
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int n;
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int dx, dy;
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unsigned long flags;
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unsigned long left_button = KD_BUTTON_1;
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unsigned long right_button = KD_BUTTON_3;
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#undef SWAP_USB
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#ifdef SWAP_USB
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if (id == 2)
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{
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left_button = KD_BUTTON_3;
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right_button = KD_BUTTON_1;
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}
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#endif
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while ((n = Ps2ReadBytes (ps2Port, (char *) buf, sizeof (buf), 3)) > 0)
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{
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b = buf;
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while (n >= 3)
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{
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flags = KD_MOUSE_DELTA;
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if (b[0] & 4)
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flags |= KD_BUTTON_2;
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if (b[0] & 2)
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flags |= right_button;
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if (b[0] & 1)
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flags |= left_button;
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dx = b[1];
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if (b[0] & 0x10)
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dx -= 256;
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dy = b[2];
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if (b[0] & 0x20)
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dy -= 256;
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dy = -dy;
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n -= 3;
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b += 3;
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KdEnqueuePointerEvent (closure, flags, dx, dy, 0);
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}
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}
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}
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static Status
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Ps2Init (KdPointerInfo *pi)
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{
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int ps2Port, i;
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if (!pi->path) {
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for (i = 0; i < NUM_PS2_NAMES; i++) {
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ps2Port = open (Ps2Names[i], 0);
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if (ps2Port >= 0) {
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pi->path = strdup (Ps2Names[i]);
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break;
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}
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}
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}
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else {
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ps2Port = open (pi->path, 0);
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}
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if (ps2Port < 0)
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return BadMatch;
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close(ps2Port);
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if (!pi->name)
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pi->name = strdup ("PS/2 Mouse");
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return Success;
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}
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static Status
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Ps2Enable (KdPointerInfo *pi)
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{
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int fd;
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if (!pi)
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return BadImplementation;
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fd = open (pi->path, 0);
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if (fd < 0)
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return BadMatch;
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if (!KdRegisterFd (fd, Ps2Read, pi)) {
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close(fd);
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return BadAlloc;
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}
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pi->driverPrivate = (void *)fd;
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return Success;
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}
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static void
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Ps2Disable (KdPointerInfo *pi)
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{
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KdUnregisterFd (pi, (int)pi->driverPrivate, TRUE);
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}
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static void
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Ps2Fini (KdPointerInfo *pi)
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{
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}
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KdPointerDriver Ps2MouseDriver = {
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"ps2",
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Ps2Init,
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Ps2Enable,
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Ps2Disable,
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Ps2Fini,
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NULL,
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};
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