/* * $Id: evdev.c,v 1.1 2005-02-09 03:56:35 keithp Exp $ * * Copyright © 2004 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. */ #ifdef HAVE_CONFIG_H #include #endif #define NEED_EVENTS #include #include #include #include #include #include "inputstr.h" #include "scrnintstr.h" #include "kdrive.h" #define NUM_EVENTS 128 #define ABS_UNSET -65535 #define BITS_PER_LONG (sizeof(long) * 8) #define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1) #define ISBITSET(x,y) ((x)[LONG(y)] & BIT(y)) #define OFF(x) ((x)%BITS_PER_LONG) #define LONG(x) ((x)/BITS_PER_LONG) #define BIT(x) (1 << OFF(x)) #define SETBIT(x,y) ((x)[LONG(y)] |= BIT(y)) #define CLRBIT(x,y) ((x)[LONG(y)] &= ~BIT(y)) #define ASSIGNBIT(x,y,z) ((x)[LONG(y)] = ((x)[LONG(y)] & ~BIT(y)) | (z << OFF(y))) typedef struct _kevdevMouse { /* current device state */ int rel[REL_MAX + 1]; int abs[ABS_MAX + 1]; int prevabs[ABS_MAX + 1]; long key[NBITS(KEY_MAX + 1)]; /* supported device info */ long relbits[NBITS(REL_MAX + 1)]; long absbits[NBITS(ABS_MAX + 1)]; long keybits[NBITS(KEY_MAX + 1)]; struct input_absinfo absinfo[ABS_MAX + 1]; int max_rel; int max_abs; } Kevdev; static void EvdevMotion (KdMouseInfo *mi) { Kevdev *ke = mi->driver; int i; for (i = 0; i <= ke->max_rel; i++) if (ke->rel[i]) { int a; ErrorF ("rel"); for (a = 0; a <= ke->max_rel; a++) { if (ISBITSET (ke->relbits, a)) ErrorF (" %d=%d", a, ke->rel[a]); ke->rel[a] = 0; } ErrorF ("\n"); break; } for (i = 0; i < ke->max_abs; i++) if (ke->abs[i] != ke->prevabs[i]) { int a; ErrorF ("abs"); for (a = 0; a <= ke->max_abs; a++) { if (ISBITSET (ke->absbits, a)) ErrorF (" %d=%d", a, ke->abs[a]); ke->prevabs[a] = ke->abs[a]; } ErrorF ("\n"); break; } } static void EvdevRead (int evdevPort, void *closure) { KdMouseInfo *mi = closure; Kevdev *ke = mi->driver; int i; struct input_event events[NUM_EVENTS]; int n; n = read (evdevPort, &events, NUM_EVENTS * sizeof (struct input_event)); if (n <= 0) return; n /= sizeof (struct input_event); for (i = 0; i < n; i++) { switch (events[i].type) { case EV_SYN: break; case EV_KEY: EvdevMotion (mi); ASSIGNBIT(ke->key,events[i].code, events[i].value); if (events[i].code < 0x100) ErrorF ("key %d %d\n", events[i].code, events[i].value); else ErrorF ("key 0x%x %d\n", events[i].code, events[i].value); break; case EV_REL: ke->rel[events[i].code] += events[i].value; break; case EV_ABS: ke->abs[events[i].code] = events[i].value; break; } } EvdevMotion (mi); } int EvdevInputType; char *kdefaultEvdev[] = { "/dev/input/event0", "/dev/input/event1", "/dev/input/event2", "/dev/input/event3", }; #define NUM_DEFAULT_EVDEV (sizeof (kdefaultEvdev) / sizeof (kdefaultEvdev[0])) static Bool EvdevInit (void) { int i; int fd; KdMouseInfo *mi, *next; int n = 0; char *prot; if (!EvdevInputType) EvdevInputType = KdAllocInputType (); for (mi = kdMouseInfo; mi; mi = next) { next = mi->next; prot = mi->prot; if (mi->inputType) continue; if (!mi->name) { for (i = 0; i < NUM_DEFAULT_EVDEV; i++) { fd = open (kdefaultEvdev[i], 2); if (fd >= 0) { mi->name = KdSaveString (kdefaultEvdev[i]); break; } } } else fd = open (mi->name, 2); if (fd >= 0) { unsigned long ev[NBITS(EV_MAX)]; Kevdev *ke; if (ioctl (fd, EVIOCGBIT(0 /*EV*/, sizeof (ev)), ev) < 0) { perror ("EVIOCGBIT 0"); close (fd); continue; } ke = xalloc (sizeof (Kevdev)); if (!ke) { close (fd); continue; } memset (ke, '\0', sizeof (Kevdev)); if (ISBITSET (ev, EV_KEY)) { if (ioctl (fd, EVIOCGBIT (EV_KEY, sizeof (ke->keybits)), ke->keybits) < 0) { perror ("EVIOCGBIT EV_KEY"); xfree (ke); close (fd); continue; } } if (ISBITSET (ev, EV_REL)) { if (ioctl (fd, EVIOCGBIT (EV_REL, sizeof (ke->relbits)), ke->relbits) < 0) { perror ("EVIOCGBIT EV_REL"); xfree (ke); close (fd); continue; } for (ke->max_rel = REL_MAX; ke->max_rel >= 0; ke->max_rel--) if (ISBITSET(ke->relbits, ke->max_rel)) break; } if (ISBITSET (ev, EV_ABS)) { int i; if (ioctl (fd, EVIOCGBIT (EV_ABS, sizeof (ke->absbits)), ke->absbits) < 0) { perror ("EVIOCGBIT EV_ABS"); xfree (ke); close (fd); continue; } for (ke->max_abs = ABS_MAX; ke->max_abs >= 0; ke->max_abs--) if (ISBITSET(ke->absbits, ke->max_abs)) break; for (i = 0; i <= ke->max_abs; i++) { if (ISBITSET (ke->absbits, i)) if (ioctl (fd, EVIOCGABS(i), &ke->absinfo[i]) < 0) { perror ("EVIOCGABS"); break; } ke->prevabs[i] = ABS_UNSET; } if (i <= ke->max_abs) { xfree (ke); close (fd); continue; } } mi->driver = ke; mi->inputType = EvdevInputType; if (KdRegisterFd (EvdevInputType, fd, EvdevRead, (void *) mi)) n++; } } return TRUE; } static void EvdevFini (void) { KdMouseInfo *mi; KdUnregisterFds (EvdevInputType, TRUE); for (mi = kdMouseInfo; mi; mi = mi->next) { if (mi->inputType == EvdevInputType) { xfree (mi->driver); mi->driver = 0; mi->inputType = 0; } } } KdMouseFuncs LinuxEvdevMouseFuncs = { EvdevInit, EvdevFini, }; #if 0 KdKeyboardFuncs LinuxEvdevKeyboardFuncs = { EvdevKbdLoad, EvdevKbdInit, EvdevKbdLeds, EvdevKbdBell, EvdevKbdFini, 0, }; #endif