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-rw-r--r--xorg-server/hw/kdrive/linux/tslib.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/linux/tslib.c b/xorg-server/hw/kdrive/linux/tslib.c
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+++ b/xorg-server/hw/kdrive/linux/tslib.c
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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) {
+ 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->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;
+ }
+
+ KdRegisterFd(private->fd, TsRead, pi);
+
+ return Success;
+}
+
+
+static void
+TslibDisable (KdPointerInfo *pi)
+{
+ struct TslibPrivate *private = pi->driverPrivate;
+
+ if (private->fd)
+ KdUnregisterFd(pi, private->fd, TRUE);
+
+ if (private->tsDev)
+ ts_close(private->tsDev);
+
+ private->fd = 0;
+ private->tsDev = NULL;
+}
+
+
+static Status
+TslibInit (KdPointerInfo *pi)
+{
+ int fd = 0, i = 0;
+ 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,
+};