diff options
Diffstat (limited to 'xorg-server/hw/dmx/input/lnx-ps2.c')
| -rw-r--r-- | xorg-server/hw/dmx/input/lnx-ps2.c | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/xorg-server/hw/dmx/input/lnx-ps2.c b/xorg-server/hw/dmx/input/lnx-ps2.c new file mode 100644 index 000000000..8b906df5f --- /dev/null +++ b/xorg-server/hw/dmx/input/lnx-ps2.c @@ -0,0 +1,290 @@ +/* Portions of this file were derived from the following files: + * + ********************************************************************** + * + * Xserver/hw/kdrive/linux/ps2.c + * + * Copyright (c) 1999 by Keith Packard + * + * 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 not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS 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. + * + */ + +/* + * Copyright 2001,2003 Red Hat Inc., Durham, North Carolina. + * + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation on the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +/* + * Authors: + * Rickard E. (Rik) Faith <faith@redhat.com> + * + */ + +/** \file + * + * This code implements a low-level device driver for a serial MS mouse. + * The code is derived from code by Keith Packard (see the source code + * for complete references). */ + +#ifdef HAVE_DMX_CONFIG_H +#include <dmx-config.h> +#endif + +#include "inputstr.h" +#include <X11/Xos.h> +#include <errno.h> +#include <termios.h> + +/*****************************************************************************/ +/* Define some macros to make it easier to move this file to another + * part of the Xserver tree. All calls to the dmx* layer are #defined + * here for the .c file. The .h file will also have to be edited. */ +#include "dmxinputinit.h" +#include "lnx-ps2.h" + +#define GETPRIV myPrivate *priv \ + = ((DMXLocalInputInfoPtr)(pDev->devicePrivate))->private + +#define LOG0(f) dmxLog(dmxDebug,f) +#define LOG1(f,a) dmxLog(dmxDebug,f,a) +#define LOG2(f,a,b) dmxLog(dmxDebug,f,a,b) +#define LOG3(f,a,b,c) dmxLog(dmxDebug,f,a,b,c) +#define FATAL0(f) dmxLog(dmxFatal,f) +#define FATAL1(f,a) dmxLog(dmxFatal,f,a) +#define FATAL2(f,a,b) dmxLog(dmxFatal,f,a,b) +#define MOTIONPROC dmxMotionProcPtr +#define ENQUEUEPROC dmxEnqueueProcPtr +#define CHECKPROC dmxCheckSpecialProcPtr +#define BLOCK DMXBlockType + +/* End of interface definitions. */ +/*****************************************************************************/ + +/* Private area for PS/2 devices. */ +typedef struct _myPrivate { + DeviceIntPtr pMouse; + int fd; + enum { + button1 = 0x0001, + button2 = 0x0002, + button3 = 0x0004, + button4 = 0x0008, + button5 = 0x0010 + } buttons; +} myPrivate; + +static int ps2LinuxReadBytes(int fd, unsigned 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 ps2LinuxButton(DevicePtr pDev, ENQUEUEPROC enqueue, + int buttons, BLOCK block) +{ + GETPRIV; + +#define PRESS(b) \ + do { \ + enqueue(pDev, ButtonPress, 0, 0, NULL, block); \ + } while (0) + +#define RELEASE(b) \ + do { \ + enqueue(pDev, ButtonRelease, 0, 0, NULL, block); \ + } while (0) + + if ((buttons & button1) && !(priv->buttons & button1)) PRESS(1); + if (!(buttons & button1) && (priv->buttons & button1)) RELEASE(1); + + if ((buttons & button2) && !(priv->buttons & button2)) PRESS(2); + if (!(buttons & button2) && (priv->buttons & button2)) RELEASE(2); + + if ((buttons & button3) && !(priv->buttons & button3)) PRESS(3); + if (!(buttons & button3) && (priv->buttons & button3)) RELEASE(3); + + if ((buttons & button4) && !(priv->buttons & button4)) PRESS(4); + if (!(buttons & button4) && (priv->buttons & button4)) RELEASE(4); + + if ((buttons & button5) && !(priv->buttons & button5)) PRESS(5); + if (!(buttons & button5) && (priv->buttons & button5)) RELEASE(5); + + priv->buttons = buttons; +} + +/** Read an event from the \a pDev device. If the event is a motion + * event, enqueue it with the \a motion function. Otherwise, check for + * special keys with the \a checkspecial function and enqueue the event + * with the \a enqueue function. The \a block type is passed to the + * functions so that they may block SIGIO handling as appropriate to the + * caller of this function. */ +void ps2LinuxRead(DevicePtr pDev, MOTIONPROC motion, + ENQUEUEPROC enqueue, CHECKPROC checkspecial, BLOCK block) +{ + GETPRIV; + unsigned char buf[3 * 200]; /* RATS: Use ok */ + unsigned char *b; + int n; + int dx, dy, v[2]; + + while ((n = ps2LinuxReadBytes(priv->fd, buf, sizeof(buf), 3)) > 0) { + b = buf; + while (n >= 3) { + dx = b[1] - ((b[0] & 0x10) ? 256 : 0); + dy = -b[2] + ((b[0] & 0x20) ? 256 : 0); + v[0] = -dx; + v[1] = -dy; + + motion(pDev, v, 0, 2, 1, block); + ps2LinuxButton(pDev, enqueue, (((b[0] & 4) ? button2 : 0) + | ((b[0] & 2) ? button3 : 0) + | ((b[0] & 1) ? button1 : 0)), + block); + n -= 3; + b += 3; + } + } +} + +/** Initialize \a pDev. */ +void ps2LinuxInit(DevicePtr pDev) +{ + GETPRIV; + const char *names[] = { "/dev/mouse", "/dev/psaux", NULL }; + int i; + + if (priv->fd >=0) return; + + for (i = 0; names[i]; i++) { + if ((priv->fd = open(names[i], O_RDWR | O_NONBLOCK, 0)) >= 0) break; + } + if (priv->fd < 0) + FATAL1("ps2LinuxInit: Cannot open mouse port (%s)\n", + strerror(errno)); +} + +/** Turn \a pDev on (i.e., take input from \a pDev). */ +int ps2LinuxOn(DevicePtr pDev) +{ + GETPRIV; + + if (priv->fd < 0) ps2LinuxInit(pDev); + return priv->fd; +} + +/** Turn \a pDev off (i.e., stop taking input from \a pDev). */ +void ps2LinuxOff(DevicePtr pDev) +{ + GETPRIV; + + close(priv->fd); + priv->fd = -1; +} + +static void ps2LinuxGetMap(DevicePtr pDev, unsigned char *map, int *nButtons) +{ + int i; + + if (nButtons) *nButtons = 3; + if (map) for (i = 0; i <= *nButtons; i++) map[i] = i; +} + +/** Currently unused hook called prior to an VT switch. */ +void ps2LinuxVTPreSwitch(pointer p) +{ +} + +/** Currently unused hook called after returning from a VT switch. */ +void ps2LinuxVTPostSwitch(pointer p) +{ +} + +/** Create a private structure for use within this file. */ +pointer ps2LinuxCreatePrivate(DeviceIntPtr pMouse) +{ + myPrivate *priv = xalloc(sizeof(*priv)); + memset(priv, 0, sizeof(*priv)); + priv->fd = -1; + priv->pMouse = pMouse; + return priv; +} + +/** Destroy a private structure. */ +void ps2LinuxDestroyPrivate(pointer priv) +{ + if (priv) xfree(priv); +} + +/** Fill the \a info structure with information needed to initialize \a + * pDev. */ +void ps2LinuxGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info) +{ + info->buttonClass = 1; + ps2LinuxGetMap(pDev, info->map, &info->numButtons); + info->valuatorClass = 1; + info->numRelAxes = 2; + info->minval[0] = 0; + info->maxval[0] = 0; + info->res[0] = 1; + info->minres[0] = 0; + info->maxres[0] = 1; + info->ptrFeedbackClass = 1; +} |