/* * $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 #endif #define NEED_EVENTS #include #include #include #include "inputstr.h" #include "scrnintstr.h" #include "kdrive.h" #include #include static long lastx = 0, lasty = 0; static struct tsdev *tsDev = NULL; /* extern int TSLibWantRawData; */ 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 (TSLibWantRawData) n = ts_read_raw(tsDev, &event, 1); else */ n = ts_read(tsDev, &event, 1); if (n == 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 };