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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/hw/kdrive/linux/ts.c
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Checked in the following released items:
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Diffstat (limited to 'xorg-server/hw/kdrive/linux/ts.c')
-rw-r--r--xorg-server/hw/kdrive/linux/ts.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/linux/ts.c b/xorg-server/hw/kdrive/linux/ts.c
new file mode 100644
index 000000000..831953f02
--- /dev/null
+++ b/xorg-server/hw/kdrive/linux/ts.c
@@ -0,0 +1,209 @@
+/*
+ * Derived from ps2.c by Jim Gettys
+ *
+ * Copyright © 1999 Keith Packard
+ * Copyright © 2000 Compaq Computer 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 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.
+ */
+
+#ifdef HAVE_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 <linux/h3600_ts.h> /* touch screen events */
+
+static long lastx = 0, lasty = 0;
+
+int KdTsPhyScreen = 0;
+
+static int
+TsReadBytes (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;
+}
+
+static void
+TsRead (int tsPort, void *closure)
+{
+ KdPointerInfo *pi = closure;
+ TS_EVENT event;
+ int n;
+ long x, y;
+ unsigned long flags;
+
+ n = TsReadBytes (tsPort, (char *) &event, sizeof (event), sizeof (event));
+ if (n == sizeof (event))
+ {
+ 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;
+ }
+ KdEnqueuePointerEvent (pi, flags, x, y, 0);
+ }
+}
+
+char *TsNames[] = {
+ "/dev/ts",
+ "/dev/h3600_ts" /* temporary name; note this code can try
+ to open more than one device */
+};
+
+#define NUM_TS_NAMES (sizeof (TsNames) / sizeof (TsNames[0]))
+
+static Status
+TsInit (KdPointerInfo *pi)
+{
+ int i;
+ int fd;
+ int n = 0;
+
+ if (!pi->path || strcmp(pi->path, "auto") == 0) {
+ for (i = 0; i < NUM_TS_NAMES; i++) {
+ fd = open (TsNames[i], 0);
+ if (fd >= 0) {
+ pi->path = KdSaveString (TsNames[i]);
+ break;
+ }
+ }
+ }
+ else {
+ fd = open (pi->path, 0);
+ }
+
+ if (fd < 0) {
+ ErrorF("TsInit: Couldn't open %s\n", pi->path);
+ return BadMatch;
+ }
+ close(fd);
+
+ pi->name = KdSaveString("H3600 Touchscreen");
+
+ return Success;
+}
+
+static Status
+TsEnable (KdPointerInfo *pi)
+{
+ int fd;
+
+ if (!pi || !pi->path)
+ return BadImplementation;
+
+ fd = open(pi->path, 0);
+
+ if (fd < 0) {
+ ErrorF("TsInit: Couldn't open %s\n", pi->path);
+ return BadMatch;
+ }
+
+ struct h3600_ts_calibration cal;
+ /*
+ * Check to see if this is a touch screen
+ */
+ if (ioctl (fd, TS_GET_CAL, &cal) != -1) {
+ mi->driverPrivate = (void *) fd;
+ if (!KdRegisterFd (fd, TsRead, (void *) mi)) {
+ close(fd);
+ return BadAlloc;
+ }
+ }
+ else {
+ ErrorF("TsEnable: %s is not a touchscreen\n", pi->path);
+ close (fd);
+ return BadMatch;
+ }
+
+ return Success;
+}
+
+static void
+TsFini (KdPointerInfo *pi)
+{
+ KdUnregisterFds (pi, (int)pi->driverPrivate, TRUE);
+ mi->driverPrivate = NULL;
+}
+
+KdPointerDriver TsDriver = {
+ TsInit,
+ TsEnable,
+ TsDisable,
+ TsFini,
+ NULL,
+};