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/*
* $RCSId: xc/programs/Xserver/hw/kdrive/linux/tslib.c,v 1.1 2002/11/01 22:27:49 keithp Exp $
* TSLIB based touchscreen driver for TinyX
* Derived from ts.c by Keith Packard
* Derived from ps2.c by Jim Gettys
*
* Copyright © 1999 Keith Packard
* Copyright © 2000 Compaq Computer Corporation
* Copyright © 2002 MontaVista Software Inc.
*
* 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 or Compaq not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard and Compaq makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD AND COMPAQ DISCLAIM 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.
*
* 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 Michael Taht or MontaVista not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Michael Taht and Montavista make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* MICHAEL TAHT AND MONTAVISTA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL EITHER 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.
*/
#define NEED_EVENTS
#include "X.h"
#include "Xproto.h"
#include "inputstr.h"
#include "scrnintstr.h"
#include "kdrive.h"
#include "Xpoll.h"
#include <sys/ioctl.h>
#include <tslib.h>
static long lastx = 0, lasty = 0;
static struct tsdev *tsDev = NULL;
void
TsRead (int tsPort, void *closure)
{
KdMouseInfo *mi = closure;
int fd = (int) mi->driver;
struct ts_sample event;
int n;
long pressure;
long x, y;
unsigned long flags;
unsigned long buttons;
n = ts_read(tsDev, &event, 1);
if (n == 1)
{
if (event.pressure)
{
/*
* HACK ATTACK. (static global variables used !)
* Here we test for the touch screen driver actually being on the
* touch screen, if it is we send absolute coordinates. If not,
* then we send delta's so that we can track the entire vga screen.
*/
if (KdTsCurScreen == KdTsPhyScreen) {
flags = KD_BUTTON_1;
x = event.x;
y = event.y;
} else {
flags = /* KD_BUTTON_1 |*/ KD_MOUSE_DELTA;
if ((lastx == 0) || (lasty == 0)) {
x = 0;
y = 0;
} else {
x = event.x - lastx;
y = event.y - lasty;
}
lastx = event.x;
lasty = event.y;
}
} else {
flags = KD_MOUSE_DELTA;
x = 0;
y = 0;
lastx = 0;
lasty = 0;
}
KdEnqueueMouseEvent (mi, flags, x, y);
}
}
static char *TsNames[] = {
"/dev/ts",
"/dev/touchscreen/0",
};
#define NUM_TS_NAMES (sizeof (TsNames) / sizeof (TsNames[0]))
int TsInputType;
int
TslibInit (void)
{
int i;
KdMouseInfo *mi, *next;
int fd= 0;
int n = 0;
if (!TsInputType)
TsInputType = KdAllocInputType ();
for (mi = kdMouseInfo; mi; mi = next)
{
next = mi->next;
if (mi->inputType)
continue;
if (!mi->name)
{
for (i = 0; i < NUM_TS_NAMES; i++)
{
if(!(tsDev = ts_open(TsNames[i],0))) continue;
ts_config(tsDev);
fd=ts_fd(tsDev);
if (fd >= 0)
{
mi->name = KdSaveString (TsNames[i]);
break;
}
}
}
if (fd > 0 && tsDev != 0)
{
mi->driver = (void *) fd;
mi->inputType = TsInputType;
if (KdRegisterFd (TsInputType, fd, TsRead, (void *) mi))
n++;
}
else
if (fd > 0) close(fd);
}
}
void
TslibFini (void)
{
KdMouseInfo *mi;
KdUnregisterFds (TsInputType, TRUE);
for (mi = kdMouseInfo; mi; mi = mi->next)
{
if (mi->inputType == TsInputType)
{
if(mi->driver) ts_close(tsDev);
mi->driver = 0;
mi->inputType = 0;
}
}
}
KdMouseFuncs TsFuncs = {
TslibInit,
TslibFini
};
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