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