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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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define NEED_EVENTS
#include <X11/X.h>
#include <X11/Xproto.h>
#include <X11/Xpoll.h>
#include "inputstr.h"
#include "scrnintstr.h"
#include "kdrive.h"
#include <sys/ioctl.h>
#include <tslib.h>
static long lastx = 0, lasty = 0;
static struct tsdev *tsDev = NULL;
void (*tslib_raw_event_hook)(int x, int y, int pressure, void *closure);
void *tslib_raw_event_closure;
int KdTsPhyScreen = 0;
static void
TsRead (int tsPort, void *closure)
{
KdMouseInfo *mi = closure;
struct ts_sample event;
int n;
long x, y;
unsigned long flags;
if (tslib_raw_event_hook)
{
if (ts_read_raw(tsDev, &event, 1) == 1)
{
tslib_raw_event_hook (event.x, event.y, event.pressure, tslib_raw_event_closure);
}
return;
}
while (ts_read(tsDev, &event, 1) == 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 (KdCurScreen == 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[] = {
NULL,
"/dev/ts",
"/dev/touchscreen/0",
};
#define NUM_TS_NAMES (sizeof (TsNames) / sizeof (TsNames[0]))
int TsInputType;
static int
TslibEnable (int not_needed_fd, void *closure)
{
KdMouseInfo *mi = closure;
int fd = 0;
fprintf(stderr, "%s() called\n", __func__);
if(!(tsDev = ts_open(mi->name, 0))) {
fprintf(stderr, "%s() failed to open %s\n", __func__, mi->name );
return -1; /* XXX Not sure what to return here */
}
ts_config(tsDev);
fd=ts_fd(tsDev);
return fd;
}
static void
TslibDisable (int fd, void *closure)
{
ts_close(tsDev);
}
static int
TslibInit (void)
{
int i, j = 0;
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;
/* Check for tslib env var device setting */
if ((TsNames[0] = getenv("TSLIB_TSDEVICE")) == NULL)
j++;
if (!mi->name)
{
for (i = j; i < NUM_TS_NAMES; i++)
{
/* XXX Should check for */
if(!(tsDev = ts_open(TsNames[i],0))) continue;
ts_config(tsDev);
fd=ts_fd(tsDev);
if (fd >= 0)
{
mi->name = KdSaveString (TsNames[i]);
break;
}
}
} else {
if(!(tsDev = ts_open(mi->name,0)))
continue;
ts_config(tsDev);
fd=ts_fd(tsDev);
}
if (fd > 0 && tsDev != 0)
{
mi->driver = (void *) fd;
mi->inputType = TsInputType;
if (KdRegisterFd (TsInputType, fd, TsRead, (void *) mi))
n++;
/* Set callbacks for vt switches etc */
KdRegisterFdEnableDisable (fd, TslibEnable, TslibDisable);
}
else
{
fprintf(stderr, "%s() failed to open tslib\n", __func__);
if (fd > 0) close(fd);
}
}
return n;
}
static 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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