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/*
* TSLIB based touchscreen driver for KDrive
* Porting to new input API and event queueing by Daniel Stone.
* 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.
* Copyright © 2005 OpenedHand Ltd.
* Copyright © 2006 Nokia Corporation
*
* 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 the authors and/or copyright holders
* not be used in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. The authors and/or
* copyright holders make no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* THE AUTHORS AND/OR COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL THE AUTHORS AND/OR COPYRIGHT HOLDERS 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_KDRIVE_CONFIG_H
#include <kdrive-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>
#include <dirent.h>
#include <linux/input.h>
struct TslibPrivate {
int fd;
int lastx, lasty;
struct tsdev *tsDev;
void (*raw_event_hook)(int x, int y, int pressure, void *closure);
void *raw_event_closure;
int phys_screen;
};
static void
TsRead (int fd, void *closure)
{
KdPointerInfo *pi = closure;
struct TslibPrivate *private = pi->driverPrivate;
struct ts_sample event;
long x = 0, y = 0;
unsigned long flags;
if (private->raw_event_hook) {
while (ts_read_raw(private->tsDev, &event, 1) == 1)
private->raw_event_hook (event.x, event.y, event.pressure,
private->raw_event_closure);
return;
}
while (ts_read(private->tsDev, &event, 1) == 1) {
if (event.pressure) {
if (event.pressure > pi->dixdev->absolute->button_threshold)
flags = KD_BUTTON_8;
else
flags = KD_BUTTON_1;
/*
* 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 == private->phys_screen) {
x = event.x;
y = event.y;
} else {
flags |= KD_MOUSE_DELTA;
if ((private->lastx == 0) || (private->lasty == 0)) {
x = event.x;
y = event.y;
} else {
x = event.x - private->lastx;
y = event.y - private->lasty;
}
}
private->lastx = x;
private->lasty = y;
} else {
flags = 0;
x = private->lastx;
y = private->lasty;
}
KdEnqueuePointerEvent (pi, flags, x, y, event.pressure);
}
}
static Status
TslibEnable (KdPointerInfo *pi)
{
struct TslibPrivate *private = pi->driverPrivate;
private->holdThumbEvents = 1;
private->raw_event_hook = NULL;
private->raw_event_closure = NULL;
private->tsDev = ts_open(pi->path, 0);
private->fd = ts_fd(private->tsDev);
if (!private->tsDev || ts_config(private->tsDev) || private->fd < 0) {
ErrorF("[tslib/TslibEnable] failed to open %s\n", pi->path);
if (private->fd > 0);
close(private->fd);
return BadAlloc;
}
if (pi->dixdev && pi->dixdev->absolute &&
pi->dixdev->absolute->button_threshold == 0)
pi->dixdev->absolute->button_threshold = 115;
KdRegisterFd(private->fd, TsRead, pi);
return Success;
}
static void
TslibDisable (KdPointerInfo *pi)
{
struct TslibPrivate *private = pi->driverPrivate;
if (private->fd) {
KdUnregisterFd(pi, private->fd);
close(private->fd);
}
if (private->tsDev)
ts_close(private->tsDev);
private->fd = 0;
private->tsDev = NULL;
}
static Status
TslibInit (KdPointerInfo *pi)
{
int fd = 0, i = 0;
char devpath[PATH_MAX], devname[TS_NAME_SIZE];
DIR *inputdir = NULL;
struct dirent *inputent = NULL;
struct tsdev *tsDev = NULL;
struct TslibPrivate *private = NULL;
if (!pi || !pi->dixdev)
return !Success;
pi->driverPrivate = (struct TslibPrivate *)
xcalloc(sizeof(struct TslibPrivate), 1);
if (!pi->driverPrivate)
return !Success;
private = pi->driverPrivate;
/* hacktastic */
private->phys_screen = 0;
pi->nAxes = 3;
pi->name = KdSaveString("Touchscreen");
pi->inputClass = KD_TOUCHSCREEN;
return Success;
}
static void
TslibFini (KdPointerInfo *pi)
{
if (pi->driverPrivate) {
xfree(pi->driverPrivate);
pi->driverPrivate = NULL;
}
}
KdPointerDriver TsDriver = {
"tslib",
TslibInit,
TslibEnable,
TslibDisable,
TslibFini,
NULL,
};
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