/* * Copyright 2004 Peter Osterlund * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include "eventcomm.h" #include "synproto.h" #include "synaptics.h" #include #define SYSCALL(call) while (((call) == -1) && (errno == EINTR)) #define LONG_BITS (sizeof(long) * 8) #define NBITS(x) (((x) + LONG_BITS - 1) / LONG_BITS) #define OFF(x) ((x) % LONG_BITS) #define LONG(x) ((x) / LONG_BITS) #define TEST_BIT(bit, array) (array[LONG(bit)] & (1 << OFF(bit))) /***************************************************************************** * Function Definitions ****************************************************************************/ static void EventDeviceOnHook(LocalDevicePtr local) { /* Try to grab the event device so that data don't leak to /dev/input/mice */ int ret; SYSCALL(ret = ioctl(local->fd, EVIOCGRAB, (pointer)1)); if (ret < 0) { xf86Msg(X_WARNING, "%s can't grab event device, errno=%d\n", local->name, errno); } } static void EventDeviceOffHook(LocalDevicePtr local) { } static Bool event_query_is_touchpad(int fd) { int ret; unsigned long evbits[NBITS(KEY_MAX)]; /* Check for ABS_X, ABS_Y, ABS_PRESSURE and BTN_TOOL_FINGER */ SYSCALL(ret = ioctl(fd, EVIOCGBIT(0, EV_MAX), evbits)); if (ret < 0) return FALSE; if (!TEST_BIT(EV_SYN, evbits) || !TEST_BIT(EV_ABS, evbits) || !TEST_BIT(EV_KEY, evbits)) return FALSE; SYSCALL(ret = ioctl(fd, EVIOCGBIT(EV_ABS, KEY_MAX), evbits)); if (ret < 0) return FALSE; if (!TEST_BIT(ABS_X, evbits) || !TEST_BIT(ABS_Y, evbits) || !TEST_BIT(ABS_PRESSURE, evbits)) return FALSE; SYSCALL(ret = ioctl(fd, EVIOCGBIT(EV_KEY, KEY_MAX), evbits)); if (ret < 0) return FALSE; if (!TEST_BIT(BTN_TOOL_FINGER, evbits)) return FALSE; return TRUE; } static Bool EventQueryHardware(LocalDevicePtr local, struct SynapticsHwInfo *synhw) { if (event_query_is_touchpad(local->fd)) { xf86Msg(X_PROBED, "%s touchpad found\n", local->name); return TRUE; } return FALSE; } static Bool SynapticsReadEvent(struct CommData *comm, struct input_event *ev) { int i, c; unsigned char *pBuf, u; for (i = 0; i < sizeof(struct input_event); i++) { if ((c = XisbRead(comm->buffer)) < 0) return FALSE; u = (unsigned char)c; pBuf = (unsigned char *)ev; pBuf[i] = u; } return TRUE; } static Bool EventReadHwState(LocalDevicePtr local, struct SynapticsHwInfo *synhw, struct SynapticsProtocolOperations *proto_ops, struct CommData *comm, struct SynapticsHwState *hwRet) { struct input_event ev; Bool v; struct SynapticsHwState *hw = &(comm->hwState); while (SynapticsReadEvent(comm, &ev)) { switch (ev.type) { case EV_SYN: switch (ev.code) { case SYN_REPORT: if (comm->oneFinger) hw->numFingers = 1; else if (comm->twoFingers) hw->numFingers = 2; else if (comm->threeFingers) hw->numFingers = 3; else hw->numFingers = 0; *hwRet = *hw; hw->guest_dx = hw->guest_dy = 0; return TRUE; } case EV_KEY: v = (ev.value ? TRUE : FALSE); switch (ev.code) { case BTN_LEFT: hw->left = v; break; case BTN_RIGHT: hw->right = v; break; case BTN_MIDDLE: hw->middle = v; break; case BTN_FORWARD: hw->up = v; break; case BTN_BACK: hw->down = v; break; case BTN_0: hw->multi[0] = v; break; case BTN_1: hw->multi[1] = v; break; case BTN_2: hw->multi[2] = v; break; case BTN_3: hw->multi[3] = v; break; case BTN_4: hw->multi[4] = v; break; case BTN_5: hw->multi[5] = v; break; case BTN_6: hw->multi[6] = v; break; case BTN_7: hw->multi[7] = v; break; case BTN_TOOL_FINGER: comm->oneFinger = v; break; case BTN_TOOL_DOUBLETAP: comm->twoFingers = v; break; case BTN_TOOL_TRIPLETAP: comm->threeFingers = v; break; case BTN_A: hw->guest_left = v; break; case BTN_B: hw->guest_right = v; break; } break; case EV_ABS: switch (ev.code) { case ABS_X: hw->x = ev.value; break; case ABS_Y: hw->y = ev.value; break; case ABS_PRESSURE: hw->z = ev.value; break; case ABS_TOOL_WIDTH: hw->fingerWidth = ev.value; break; } break; case EV_REL: switch (ev.code) { case REL_X: hw->guest_dx = ev.value; break; case REL_Y: hw->guest_dy = ev.value; break; } break; } } return FALSE; } static Bool EventAutoDevProbe(LocalDevicePtr local) { /* We are trying to find the right eventX device or fall back to the psaux protocol and the given device from XF86Config */ int i; Bool have_evdev = FALSE; int noent_cnt = 0; const int max_skip = 10; for (i = 0; ; i++) { char fname[64]; int fd = -1; Bool is_touchpad; sprintf(fname, "%s/%s%d", DEV_INPUT_EVENT, EVENT_DEV_NAME, i); SYSCALL(fd = open(fname, O_RDONLY)); if (fd < 0) { if (errno == ENOENT) { if (++noent_cnt >= max_skip) break; else continue; } else { continue; } } noent_cnt = 0; have_evdev = TRUE; is_touchpad = event_query_is_touchpad(fd); SYSCALL(close(fd)); if (is_touchpad) { xf86Msg(X_PROBED, "%s auto-dev sets device to %s\n", local->name, fname); xf86ReplaceStrOption(local->options, "Device", fname); return TRUE; } } ErrorF("%s no synaptics event device found (checked %d nodes)\n", local->name, i + 1); if (i <= max_skip) ErrorF("%s The /dev/input/event* device nodes seem to be missing\n", local->name); if (i > max_skip && !have_evdev) ErrorF("%s The evdev kernel module seems to be missing\n", local->name); return FALSE; } struct SynapticsProtocolOperations event_proto_operations = { EventDeviceOnHook, EventDeviceOffHook, EventQueryHardware, EventReadHwState, EventAutoDevProbe };