2000-09-26 06:31:23 +02:00
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/*
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2001-07-11 04:58:19 +02:00
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* $XFree86: xc/programs/Xserver/hw/kdrive/linux/ts.c,v 1.4 2001/06/29 14:00:41 keithp Exp $
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2000-09-26 06:31:23 +02:00
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*
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* Derived from ps2.c by Jim Gettys
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*
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* Copyright <EFBFBD> 1999 Keith Packard
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* Copyright <EFBFBD> 2000 Compaq Computer Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard or Compaq not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard and Compaq makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD AND COMPAQ DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
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* IN NO EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#define NEED_EVENTS
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#include "X.h"
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#include "Xproto.h"
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "kdrive.h"
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#include "Xpoll.h"
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#include <sys/ioctl.h>
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2001-12-07 03:19:04 +01:00
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#if 1
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2000-09-26 06:31:23 +02:00
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#include <linux/h3600_ts.h> /* touch screen events */
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2001-12-07 03:19:04 +01:00
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#else
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/* inline for non-arm debug builds */
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typedef struct {
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unsigned short pressure;
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unsigned short x;
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unsigned short y;
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unsigned short pad; /* TODO TODO word boundary pad */
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} TS_EVENT;
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#endif
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2000-09-26 06:31:23 +02:00
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2001-05-23 10:56:09 +02:00
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static long lastx = 0, lasty = 0;
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int TsScreen;
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extern int TsFbdev;
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2001-12-07 03:19:04 +01:00
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int
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TsReadBytes (int fd, char *buf, int len, int min)
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{
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int n, tot;
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fd_set set;
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struct timeval tv;
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tot = 0;
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while (len)
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{
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n = read (fd, buf, len);
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if (n > 0)
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{
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tot += n;
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buf += n;
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len -= n;
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}
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if (tot % min == 0)
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break;
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FD_ZERO (&set);
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FD_SET (fd, &set);
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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n = select (fd + 1, &set, 0, 0, &tv);
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if (n <= 0)
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break;
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}
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return tot;
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}
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2000-09-26 06:31:23 +02:00
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void
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2001-07-11 04:58:19 +02:00
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TsRead (int tsPort, void *closure)
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2000-09-26 06:31:23 +02:00
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{
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2001-12-07 03:19:04 +01:00
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KdMouseInfo *mi = closure;
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int fd = (int) mi->driver;
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2000-09-26 06:31:23 +02:00
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TS_EVENT event;
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long buf[3];
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int n;
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long pressure;
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long x, y;
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unsigned long flags;
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unsigned long buttons;
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2001-12-07 03:19:04 +01:00
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n = TsReadBytes (tsPort, (char *) &event, sizeof (event), sizeof (event));
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2000-09-26 06:31:23 +02:00
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if (n == sizeof (event))
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{
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if (event.pressure)
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{
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2001-05-23 10:56:09 +02:00
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/*
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* HACK ATTACK. (static global variables used !)
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* Here we test for the touch screen driver actually being on the
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* touch screen, if it is we send absolute coordinates. If not,
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* then we send delta's so that we can track the entire vga screen.
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*/
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if (TsScreen == TsFbdev) {
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flags = KD_BUTTON_1;
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x = event.x;
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y = event.y;
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} else {
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flags = /* KD_BUTTON_1 |*/ KD_MOUSE_DELTA;
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if ((lastx == 0) || (lasty == 0)) {
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x = 0;
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y = 0;
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} else {
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x = event.x - lastx;
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y = event.y - lasty;
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}
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lastx = event.x;
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lasty = event.y;
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}
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} else {
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2000-09-26 06:31:23 +02:00
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flags = KD_MOUSE_DELTA;
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x = 0;
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y = 0;
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2001-05-23 10:56:09 +02:00
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lastx = 0;
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lasty = 0;
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2000-09-26 06:31:23 +02:00
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}
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2001-12-07 03:19:04 +01:00
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KdEnqueueMouseEvent (mi, flags, x, y);
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2000-09-26 06:31:23 +02:00
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}
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}
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char *TsNames[] = {
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"/dev/ts",
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"/dev/h3600_ts" /* temporary name; note this code can try
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to open more than one device */
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};
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#define NUM_TS_NAMES (sizeof (TsNames) / sizeof (TsNames[0]))
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2001-06-29 16:00:41 +02:00
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int TsInputType;
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2000-09-26 06:31:23 +02:00
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int
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TsInit (void)
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{
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2001-12-07 03:19:04 +01:00
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int i;
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int fd;
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KdMouseInfo *mi, *next;
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int n = 0;
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2000-09-26 06:31:23 +02:00
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2001-06-29 16:00:41 +02:00
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if (!TsInputType)
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TsInputType = KdAllocInputType ();
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2001-12-07 03:19:04 +01:00
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for (mi = kdMouseInfo; mi; mi = next)
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2000-09-26 06:31:23 +02:00
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{
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2001-12-07 03:19:04 +01:00
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next = mi->next;
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if (!mi->name)
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{
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for (i = 0; i < NUM_TS_NAMES; i++)
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{
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fd = open (TsNames[i], 0);
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if (fd >= 0)
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{
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mi->name = KdSaveString (TsNames[i]);
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break;
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}
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}
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}
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else
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fd = open (mi->name, 0);
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if (fd >= 0)
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2001-06-29 16:00:41 +02:00
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{
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2001-12-07 03:19:04 +01:00
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mi->driver = (void *) fd;
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if (KdRegisterFd (TsInputType, fd, TsRead, (void *) mi))
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n++;
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2001-06-29 16:00:41 +02:00
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}
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2001-12-07 03:19:04 +01:00
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else
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KdMouseInfoDispose (mi);
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2000-09-26 06:31:23 +02:00
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}
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}
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void
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2001-06-29 16:00:41 +02:00
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TsFini (void)
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2000-09-26 06:31:23 +02:00
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{
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2001-06-29 16:00:41 +02:00
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KdUnregisterFds (TsInputType, TRUE);
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2000-09-26 06:31:23 +02:00
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}
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2001-07-11 04:58:19 +02:00
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KdMouseFuncs TsFuncs = {
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2000-09-26 06:31:23 +02:00
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TsInit,
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TsFini
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};
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