/* * Copyright © 1999 Henry Davies * Copyright © 2001 Stefan Gmeiner * Copyright © 2002 S. Lehner * Copyright © 2002 Peter Osterlund * Copyright © 2002 Linuxcare Inc. David Kennedy * Copyright © 2003 Hartwig Felger * Copyright © 2003 Jörg Bösner * Copyright © 2003 Fred Hucht * Copyright © 2004 Alexei Gilchrist * Copyright © 2004 Matthias Ihmig * Copyright © 2006 Stefan Bethge * Copyright © 2006 Christian Thaeter * Copyright © 2007 Joseph P. Skudlarek * * 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 Red Hat * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. Red * Hat makes no representations about the suitability of this software * for any purpose. It is provided "as is" without express or implied * warranty. * * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN * NO EVENT SHALL THE AUTHORS 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. * * Authors: * Joseph P. Skudlarek * Christian Thaeter * Stefan Bethge * Matthias Ihmig * Alexei Gilchrist * Jörg Bösner * Hartwig Felger * Peter Osterlund * S. Lehner * Stefan Gmeiner * Henry Davies for the * Linuxcare Inc. David Kennedy * Fred Hucht * * Trademarks are the property of their respective owners. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mipointer.h" #define SYNAPTICS_PRIVATE #include "synaptics.h" typedef enum { BOTTOM_EDGE = 1, TOP_EDGE = 2, LEFT_EDGE = 4, RIGHT_EDGE = 8, LEFT_BOTTOM_EDGE = BOTTOM_EDGE | LEFT_EDGE, RIGHT_BOTTOM_EDGE = BOTTOM_EDGE | RIGHT_EDGE, RIGHT_TOP_EDGE = TOP_EDGE | RIGHT_EDGE, LEFT_TOP_EDGE = TOP_EDGE | LEFT_EDGE } edge_type; #define MAX(a, b) (((a)>(b))?(a):(b)) #define MIN(a, b) (((a)<(b))?(a):(b)) #define TIME_DIFF(a, b) ((int)((a)-(b))) #define SYSCALL(call) while (((call) == -1) && (errno == EINTR)) #define SQR(x) ((x) * (x)) #ifndef M_PI #define M_PI 3.14159265358979323846 #endif #ifndef M_SQRT1_2 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ #endif #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 1 #define DBG(a,b) #endif /***************************************************************************** * Forward declaration ****************************************************************************/ static InputInfoPtr SynapticsPreInit(InputDriverPtr drv, IDevPtr dev, int flags); static Bool DeviceControl(DeviceIntPtr, int); static void ReadInput(LocalDevicePtr); static int HandleState(LocalDevicePtr, struct SynapticsHwState*); static int ControlProc(LocalDevicePtr, xDeviceCtl*); static void CloseProc(LocalDevicePtr); static int SwitchMode(ClientPtr, DeviceIntPtr, int); static Bool ConvertProc(LocalDevicePtr, int, int, int, int, int, int, int, int, int*, int*); static Bool DeviceInit(DeviceIntPtr); static Bool DeviceOn(DeviceIntPtr); static Bool DeviceOff(DeviceIntPtr); static Bool DeviceClose(DeviceIntPtr); static Bool QueryHardware(LocalDevicePtr); InputDriverRec SYNAPTICS = { 1, "synaptics", NULL, SynapticsPreInit, NULL, NULL, 0 }; static XF86ModuleVersionInfo VersionRec = { "synaptics", MODULEVENDORSTRING, MODINFOSTRING1, MODINFOSTRING2, XF86_VERSION_CURRENT, 1, 0, 0, ABI_CLASS_XINPUT, ABI_XINPUT_VERSION, MOD_CLASS_XINPUT, {0, 0, 0, 0} }; static pointer SetupProc(pointer module, pointer options, int *errmaj, int *errmin) { xf86AddInputDriver(&SYNAPTICS, module, 0); return module; } XF86ModuleData synapticsModuleData = {&VersionRec, &SetupProc, NULL }; /***************************************************************************** * Function Definitions ****************************************************************************/ static void SetDeviceAndProtocol(LocalDevicePtr local) { char *str_par, *device; SynapticsPrivate *priv = local->private; enum SynapticsProtocol proto = SYN_PROTO_PSAUX; device = xf86FindOptionValue(local->options, "Device"); if (!device) { device = xf86FindOptionValue(local->options, "Path"); xf86SetStrOption(local->options, "Device", device); } if (device && strstr(device, "/dev/input/event")) { /* trust the device name if we've been given one */ proto = SYN_PROTO_EVENT; } else { str_par = xf86FindOptionValue(local->options, "Protocol"); if (str_par && !strcmp(str_par, "psaux")) { /* Already set up */ #ifdef BUILD_EVENTCOMM } else if (str_par && !strcmp(str_par, "event")) { proto = SYN_PROTO_EVENT; #endif /* BUILD_EVENTCOMM */ #ifdef BUILD_PSMCOMM } else if (str_par && !strcmp(str_par, "psm")) { proto = SYN_PROTO_PSM; #endif /* BUILD_PSMCOMM */ } else if (str_par && !strcmp(str_par, "alps")) { proto = SYN_PROTO_ALPS; } else { /* default to auto-dev */ if (event_proto_operations.AutoDevProbe(local)) proto = SYN_PROTO_EVENT; } } switch (proto) { case SYN_PROTO_PSAUX: priv->proto_ops = &psaux_proto_operations; break; #ifdef BUILD_EVENTCOMM case SYN_PROTO_EVENT: priv->proto_ops = &event_proto_operations; break; #endif /* BUILD_EVENTCOMM */ #ifdef BUILD_PSMCOMM case SYN_PROTO_PSM: priv->proto_ops = &psm_proto_operations; break; #endif /* BUILD_PSMCOMM */ case SYN_PROTO_ALPS: priv->proto_ops = &alps_proto_operations; break; } } /* * Allocate and initialize memory for the SynapticsSHM data to hold driver * parameter settings. * The function will allocate shared memory if priv->shm_config is TRUE. * The allocated data is initialized from priv->synpara_default. */ static Bool alloc_param_data(LocalDevicePtr local) { int shmid; SynapticsPrivate *priv = local->private; if (priv->synpara) return TRUE; /* Already allocated */ if (priv->shm_config) { if ((shmid = shmget(SHM_SYNAPTICS, 0, 0)) != -1) shmctl(shmid, IPC_RMID, NULL); if ((shmid = shmget(SHM_SYNAPTICS, sizeof(SynapticsSHM), 0777 | IPC_CREAT)) == -1) { xf86Msg(X_ERROR, "%s error shmget\n", local->name); return FALSE; } if ((priv->synpara = (SynapticsSHM*)shmat(shmid, NULL, 0)) == NULL) { xf86Msg(X_ERROR, "%s error shmat\n", local->name); return FALSE; } } else { priv->synpara = xcalloc(1, sizeof(SynapticsSHM)); if (!priv->synpara) return FALSE; } *(priv->synpara) = priv->synpara_default; return TRUE; } /* * Free SynapticsSHM data previously allocated by alloc_param_data(). */ static void free_param_data(SynapticsPrivate *priv) { int shmid; if (!priv->synpara) return; if (priv->shm_config) { if ((shmid = xf86shmget(SHM_SYNAPTICS, 0, 0)) != -1) shmctl(shmid, IPC_RMID, NULL); } else { xfree(priv->synpara); } priv->synpara = NULL; } static double synSetFloatOption(pointer options, const char *optname, double default_value) { char *str_par; double value; str_par = xf86FindOptionValue(options, optname); if ((!str_par) || (sscanf(str_par, "%lf", &value) != 1)) return default_value; return value; } /* * called by the module loader for initialization */ static InputInfoPtr SynapticsPreInit(InputDriverPtr drv, IDevPtr dev, int flags) { LocalDevicePtr local; SynapticsPrivate *priv; pointer optList; SynapticsSHM *pars; char *repeater; pointer opts; int status; /* allocate memory for SynapticsPrivateRec */ priv = xcalloc(1, sizeof(SynapticsPrivate)); if (!priv) return NULL; /* Allocate a new InputInfoRec and add it to the head xf86InputDevs. */ local = xf86AllocateInput(drv, 0); if (!local) { xfree(priv); return NULL; } /* initialize the InputInfoRec */ local->name = dev->identifier; local->type_name = XI_MOUSE; /* XI_TOUCHPAD and KDE killed the X Server at startup ? */ local->device_control = DeviceControl; local->read_input = ReadInput; local->control_proc = ControlProc; local->close_proc = CloseProc; local->switch_mode = SwitchMode; local->conversion_proc = ConvertProc; local->reverse_conversion_proc = NULL; local->dev = NULL; local->private = priv; local->private_flags = 0; local->flags = XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS; local->conf_idev = dev; #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) == 0 local->motion_history_proc = xf86GetMotionEvents; local->history_size = 0; #endif local->always_core_feedback = 0; xf86Msg(X_INFO, "Synaptics touchpad driver version %s\n", PACKAGE_VERSION); xf86CollectInputOptions(local, NULL, NULL); opts = local->options; xf86OptionListReport(opts); SetDeviceAndProtocol(local); /* open the touchpad device */ local->fd = xf86OpenSerial(opts); if (local->fd == -1) { ErrorF("Synaptics driver unable to open device\n"); goto SetupProc_fail; } xf86ErrorFVerb(6, "port opened successfully\n"); /* initialize variables */ priv->timer = NULL; priv->repeatButtons = 0; priv->nextRepeat = 0; priv->count_packet_finger = 0; priv->tap_state = TS_START; priv->tap_button = 0; priv->tap_button_state = TBS_BUTTON_UP; priv->touch_on.millis = 0; /* install shared memory or normal memory for parameters */ priv->shm_config = xf86SetBoolOption(opts, "SHMConfig", FALSE); /* read the parameters */ pars = &priv->synpara_default; pars->version = (PACKAGE_VERSION_MAJOR*10000+PACKAGE_VERSION_MINOR*100+PACKAGE_VERSION_PATCHLEVEL); pars->left_edge = xf86SetIntOption(opts, "LeftEdge", 1900); pars->right_edge = xf86SetIntOption(opts, "RightEdge", 5400); pars->top_edge = xf86SetIntOption(opts, "TopEdge", 1900); pars->bottom_edge = xf86SetIntOption(opts, "BottomEdge", 4000); pars->finger_low = xf86SetIntOption(opts, "FingerLow", 25); pars->finger_high = xf86SetIntOption(opts, "FingerHigh", 30); pars->finger_press = xf86SetIntOption(opts, "FingerPress", 256); pars->tap_time = xf86SetIntOption(opts, "MaxTapTime", 180); pars->tap_move = xf86SetIntOption(opts, "MaxTapMove", 220); pars->tap_time_2 = xf86SetIntOption(opts, "MaxDoubleTapTime", 180); pars->click_time = xf86SetIntOption(opts, "ClickTime", 100); pars->fast_taps = xf86SetIntOption(opts, "FastTaps", FALSE); pars->emulate_mid_button_time = xf86SetIntOption(opts, "EmulateMidButtonTime", 75); pars->emulate_twofinger_z = xf86SetIntOption(opts, "EmulateTwoFingerMinZ", 257); pars->scroll_dist_vert = xf86SetIntOption(opts, "VertScrollDelta", 100); pars->scroll_dist_horiz = xf86SetIntOption(opts, "HorizScrollDelta", 100); pars->scroll_edge_vert = xf86SetBoolOption(opts, "VertEdgeScroll", TRUE); pars->scroll_edge_horiz = xf86SetBoolOption(opts, "HorizEdgeScroll", TRUE); pars->scroll_edge_corner = xf86SetBoolOption(opts, "CornerCoasting", FALSE); pars->scroll_twofinger_vert = xf86SetBoolOption(opts, "VertTwoFingerScroll", FALSE); pars->scroll_twofinger_horiz = xf86SetBoolOption(opts, "HorizTwoFingerScroll", FALSE); pars->edge_motion_min_z = xf86SetIntOption(opts, "EdgeMotionMinZ", 30); pars->edge_motion_max_z = xf86SetIntOption(opts, "EdgeMotionMaxZ", 160); pars->edge_motion_min_speed = xf86SetIntOption(opts, "EdgeMotionMinSpeed", 1); pars->edge_motion_max_speed = xf86SetIntOption(opts, "EdgeMotionMaxSpeed", 400); pars->edge_motion_use_always = xf86SetBoolOption(opts, "EdgeMotionUseAlways", FALSE); repeater = xf86SetStrOption(opts, "Repeater", NULL); pars->updown_button_scrolling = xf86SetBoolOption(opts, "UpDownScrolling", TRUE); pars->leftright_button_scrolling = xf86SetBoolOption(opts, "LeftRightScrolling", TRUE); pars->updown_button_repeat = xf86SetBoolOption(opts, "UpDownScrollRepeat", TRUE); pars->leftright_button_repeat = xf86SetBoolOption(opts, "LeftRightScrollRepeat", TRUE); pars->scroll_button_repeat = xf86SetIntOption(opts,"ScrollButtonRepeat", 100); pars->touchpad_off = xf86SetIntOption(opts, "TouchpadOff", 0); pars->guestmouse_off = xf86SetBoolOption(opts, "GuestMouseOff", FALSE); pars->locked_drags = xf86SetBoolOption(opts, "LockedDrags", FALSE); pars->locked_drag_time = xf86SetIntOption(opts, "LockedDragTimeout", 5000); pars->tap_action[RT_TAP] = xf86SetIntOption(opts, "RTCornerButton", 0); pars->tap_action[RB_TAP] = xf86SetIntOption(opts, "RBCornerButton", 0); pars->tap_action[LT_TAP] = xf86SetIntOption(opts, "LTCornerButton", 0); pars->tap_action[LB_TAP] = xf86SetIntOption(opts, "LBCornerButton", 0); pars->tap_action[F1_TAP] = xf86SetIntOption(opts, "TapButton1", 0); pars->tap_action[F2_TAP] = xf86SetIntOption(opts, "TapButton2", 0); pars->tap_action[F3_TAP] = xf86SetIntOption(opts, "TapButton3", 0); pars->circular_scrolling = xf86SetBoolOption(opts, "CircularScrolling", FALSE); pars->circular_trigger = xf86SetIntOption(opts, "CircScrollTrigger", 0); pars->circular_pad = xf86SetBoolOption(opts, "CircularPad", FALSE); pars->palm_detect = xf86SetBoolOption(opts, "PalmDetect", TRUE); pars->palm_min_width = xf86SetIntOption(opts, "PalmMinWidth", 10); pars->palm_min_z = xf86SetIntOption(opts, "PalmMinZ", 200); pars->single_tap_timeout = xf86SetIntOption(opts, "SingleTapTimeout", 180); pars->press_motion_min_z = xf86SetIntOption(opts, "PressureMotionMinZ", pars->edge_motion_min_z); pars->press_motion_max_z = xf86SetIntOption(opts, "PressureMotionMaxZ", pars->edge_motion_max_z); pars->min_speed = synSetFloatOption(opts, "MinSpeed", 0.09); pars->max_speed = synSetFloatOption(opts, "MaxSpeed", 0.18); pars->accl = synSetFloatOption(opts, "AccelFactor", 0.0015); pars->trackstick_speed = synSetFloatOption(opts, "TrackstickSpeed", 40); pars->scroll_dist_circ = synSetFloatOption(opts, "CircScrollDelta", 0.1); pars->coasting_speed = synSetFloatOption(opts, "CoastingSpeed", 0.0); pars->press_motion_min_factor = synSetFloatOption(opts, "PressureMotionMinFactor", 1.0); pars->press_motion_max_factor = synSetFloatOption(opts, "PressureMotionMaxFactor", 1.0); pars->grab_event_device = xf86SetBoolOption(opts, "GrabEventDevice", TRUE); /* Warn about (and fix) incorrectly configured TopEdge/BottomEdge parameters */ if (pars->top_edge > pars->bottom_edge) { int tmp = pars->top_edge; pars->top_edge = pars->bottom_edge; pars->bottom_edge = tmp; xf86Msg(X_WARNING, "%s: TopEdge is bigger than BottomEdge. Fixing.\n", local->name); } priv->largest_valid_x = MIN(pars->right_edge, XMAX_NOMINAL); if (!alloc_param_data(local)) goto SetupProc_fail; priv->comm.buffer = XisbNew(local->fd, 200); DBG(9, XisbTrace(priv->comm.buffer, 1)); priv->fifofd = -1; if (repeater) { /* create repeater fifo */ status = mknod(repeater, 666, S_IFIFO); if ((status != 0) && (status != EEXIST)) { xf86Msg(X_ERROR, "%s can't create repeater fifo\n", local->name); } else { /* open the repeater fifo */ optList = xf86NewOption("Device", repeater); if ((priv->fifofd = xf86OpenSerial(optList)) == -1) { xf86Msg(X_ERROR, "%s repeater device open failed\n", local->name); } } free(repeater); } if (!QueryHardware(local)) { xf86Msg(X_ERROR, "%s Unable to query/initialize Synaptics hardware.\n", local->name); goto SetupProc_fail; } #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) == 0 local->history_size = xf86SetIntOption(opts, "HistorySize", 0); #endif xf86ProcessCommonOptions(local, opts); local->flags |= XI86_CONFIGURED; if (local->fd != -1) { if (priv->comm.buffer) { XisbFree(priv->comm.buffer); priv->comm.buffer = NULL; } xf86CloseSerial(local->fd); } local->fd = -1; return local; SetupProc_fail: if (local->fd >= 0) { xf86CloseSerial(local->fd); local->fd = -1; } if (priv->comm.buffer) XisbFree(priv->comm.buffer); free_param_data(priv); /* Freeing priv makes the X server crash. Don't know why. xfree(priv); */ return local; } /* * Alter the control parameters for the mouse. Note that all special * protocol values are handled by dix. */ static void SynapticsCtrl(DeviceIntPtr device, PtrCtrl *ctrl) { DBG(3, ErrorF("SynapticsCtrl called.\n")); /* pInfo = device->public.devicePrivate; pMse = pInfo->private; pMse->num = ctrl->num; pMse->den = ctrl->den; pMse->threshold = ctrl->threshold; */ } static Bool DeviceControl(DeviceIntPtr dev, int mode) { Bool RetValue; switch (mode) { case DEVICE_INIT: RetValue = DeviceInit(dev); break; case DEVICE_ON: RetValue = DeviceOn(dev); break; case DEVICE_OFF: RetValue = DeviceOff(dev); break; case DEVICE_CLOSE: RetValue = DeviceClose(dev); break; default: RetValue = BadValue; } return RetValue; } static Bool DeviceOn(DeviceIntPtr dev) { LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (local->private); DBG(3, ErrorF("Synaptics DeviceOn called\n")); SetDeviceAndProtocol(local); local->fd = xf86OpenSerial(local->options); if (local->fd == -1) { xf86Msg(X_WARNING, "%s: cannot open input device\n", local->name); return !Success; } priv->proto_ops->DeviceOnHook(local, priv->synpara); priv->comm.buffer = XisbNew(local->fd, 64); if (!priv->comm.buffer) { xf86CloseSerial(local->fd); local->fd = -1; return !Success; } xf86FlushInput(local->fd); /* reinit the pad */ QueryHardware(local); xf86AddEnabledDevice(local); dev->public.on = TRUE; return Success; } static Bool DeviceOff(DeviceIntPtr dev) { LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (local->private); DBG(3, ErrorF("Synaptics DeviceOff called\n")); if (local->fd != -1) { TimerFree(priv->timer); priv->timer = NULL; xf86RemoveEnabledDevice(local); priv->proto_ops->DeviceOffHook(local); if (priv->comm.buffer) { XisbFree(priv->comm.buffer); priv->comm.buffer = NULL; } xf86CloseSerial(local->fd); } dev->public.on = FALSE; return Success; } static Bool DeviceClose(DeviceIntPtr dev) { Bool RetValue; LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) local->private; RetValue = DeviceOff(dev); free_param_data(priv); return RetValue; } static Bool DeviceInit(DeviceIntPtr dev) { LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate; unsigned char map[SYN_MAX_BUTTONS + 1]; int i; DBG(3, ErrorF("Synaptics DeviceInit called\n")); for (i = 0; i <= SYN_MAX_BUTTONS; i++) map[i] = i; dev->public.on = FALSE; InitPointerDeviceStruct((DevicePtr)dev, map, SYN_MAX_BUTTONS, #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) == 0 miPointerGetMotionEvents, #elif GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3 GetMotionHistory, #endif SynapticsCtrl, #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) == 0 miPointerGetMotionBufferSize() #else GetMotionHistorySize(), 2 #endif ); /* X valuator */ xf86InitValuatorAxisStruct(dev, 0, 0, -1, 1, 0, 1); xf86InitValuatorDefaults(dev, 0); /* Y valuator */ xf86InitValuatorAxisStruct(dev, 1, 0, -1, 1, 0, 1); xf86InitValuatorDefaults(dev, 1); #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) == 0 xf86MotionHistoryAllocate(local); #endif if (!alloc_param_data(local)) return !Success; return Success; } static int move_distance(int dx, int dy) { return sqrt(SQR(dx) + SQR(dy)); } /* * Convert from absolute X/Y coordinates to a coordinate system where * -1 corresponds to the left/upper edge and +1 corresponds to the * right/lower edge. */ static void relative_coords(SynapticsPrivate *priv, int x, int y, double *relX, double *relY) { int minX = priv->synpara->left_edge; int maxX = priv->synpara->right_edge; int minY = priv->synpara->top_edge; int maxY = priv->synpara->bottom_edge; double xCenter = (minX + maxX) / 2.0; double yCenter = (minY + maxY) / 2.0; if ((maxX - xCenter > 0) && (maxY - yCenter > 0)) { *relX = (x - xCenter) / (maxX - xCenter); *relY = (y - yCenter) / (maxY - yCenter); } else { *relX = 0; *relY = 0; } } /* return angle of point relative to center */ static double angle(SynapticsPrivate *priv, int x, int y) { double xCenter = (priv->synpara->left_edge + priv->synpara->right_edge) / 2.0; double yCenter = (priv->synpara->top_edge + priv->synpara->bottom_edge) / 2.0; return atan2(-(y - yCenter), x - xCenter); } /* return angle difference */ static double diffa(double a1, double a2) { double da = fmod(a2 - a1, 2 * M_PI); if (da < 0) da += 2 * M_PI; if (da > M_PI) da -= 2 * M_PI; return da; } static edge_type circular_edge_detection(SynapticsPrivate *priv, int x, int y) { edge_type edge = 0; double relX, relY, relR; relative_coords(priv, x, y, &relX, &relY); relR = SQR(relX) + SQR(relY); if (relR > 1) { /* we are outside the ellipse enclosed by the edge parameters */ if (relX > M_SQRT1_2) edge |= RIGHT_EDGE; else if (relX < -M_SQRT1_2) edge |= LEFT_EDGE; if (relY < -M_SQRT1_2) edge |= TOP_EDGE; else if (relY > M_SQRT1_2) edge |= BOTTOM_EDGE; } return edge; } static edge_type edge_detection(SynapticsPrivate *priv, int x, int y) { edge_type edge = 0; if (priv->synpara->circular_pad) return circular_edge_detection(priv, x, y); if (x > priv->synpara->right_edge) edge |= RIGHT_EDGE; else if (x < priv->synpara->left_edge) edge |= LEFT_EDGE; if (y < priv->synpara->top_edge) edge |= TOP_EDGE; else if (y > priv->synpara->bottom_edge) edge |= BOTTOM_EDGE; return edge; } static CARD32 timerFunc(OsTimerPtr timer, CARD32 now, pointer arg) { LocalDevicePtr local = (LocalDevicePtr) (arg); SynapticsPrivate *priv = (SynapticsPrivate *) (local->private); struct SynapticsHwState hw; int delay; int sigstate; CARD32 wakeUpTime; sigstate = xf86BlockSIGIO(); hw = priv->hwState; hw.guest_dx = hw.guest_dy = 0; hw.millis = now; delay = HandleState(local, &hw); /* * Workaround for wraparound bug in the TimerSet function. This bug is already * fixed in CVS, but this driver needs to work with XFree86 versions 4.2.x and * 4.3.x too. */ wakeUpTime = now + delay; if (wakeUpTime <= now) wakeUpTime = 0xffffffffL; priv->timer = TimerSet(priv->timer, TimerAbsolute, wakeUpTime, timerFunc, local); xf86UnblockSIGIO(sigstate); return 0; } static int clamp(int val, int min, int max) { if (val < min) return min; else if (val < max) return val; else return max; } static Bool SynapticsGetHwState(LocalDevicePtr local, SynapticsPrivate *priv, struct SynapticsHwState *hw) { if (priv->fifofd >= 0) { /* when there is no synaptics touchpad pipe the data to the repeater fifo */ int count = 0; int c; while ((c = XisbRead(priv->comm.buffer)) >= 0) { unsigned char u = (unsigned char)c; write(priv->fifofd, &u, 1); if (++count >= 3) break; } return FALSE; } return priv->proto_ops->ReadHwState(local, &priv->synhw, priv->proto_ops, &priv->comm, hw); } /* * called for each full received packet from the touchpad */ static void ReadInput(LocalDevicePtr local) { SynapticsPrivate *priv = (SynapticsPrivate *) (local->private); struct SynapticsHwState hw; int delay = 0; Bool newDelay = FALSE; while (SynapticsGetHwState(local, priv, &hw)) { hw.millis = GetTimeInMillis(); priv->hwState = hw; delay = HandleState(local, &hw); newDelay = TRUE; } if (newDelay) priv->timer = TimerSet(priv->timer, 0, delay, timerFunc, local); } static int HandleMidButtonEmulation(SynapticsPrivate *priv, struct SynapticsHwState *hw, int *delay) { SynapticsSHM *para = priv->synpara; Bool done = FALSE; int timeleft; int mid = 0; while (!done) { switch (priv->mid_emu_state) { case MBE_OFF: priv->button_delay_millis = hw->millis; if (hw->left) { priv->mid_emu_state = MBE_LEFT; } else if (hw->right) { priv->mid_emu_state = MBE_RIGHT; } else { done = TRUE; } break; case MBE_LEFT: timeleft = TIME_DIFF(priv->button_delay_millis + para->emulate_mid_button_time, hw->millis); if (timeleft > 0) *delay = MIN(*delay, timeleft); if (!hw->left || (timeleft <= 0)) { hw->left = TRUE; priv->mid_emu_state = MBE_TIMEOUT; done = TRUE; } else if (hw->right) { priv->mid_emu_state = MBE_MID; } else { hw->left = FALSE; done = TRUE; } break; case MBE_RIGHT: timeleft = TIME_DIFF(priv->button_delay_millis + para->emulate_mid_button_time, hw->millis); if (timeleft > 0) *delay = MIN(*delay, timeleft); if (!hw->right || (timeleft <= 0)) { hw->right = TRUE; priv->mid_emu_state = MBE_TIMEOUT; done = TRUE; } else if (hw->left) { priv->mid_emu_state = MBE_MID; } else { hw->right = FALSE; done = TRUE; } break; case MBE_MID: if (!hw->left && !hw->right) { priv->mid_emu_state = MBE_OFF; } else { mid = TRUE; hw->left = hw->right = FALSE; done = TRUE; } break; case MBE_TIMEOUT: if (!hw->left && !hw->right) { priv->mid_emu_state = MBE_OFF; } else { done = TRUE; } } } return mid; } static int SynapticsDetectFinger(SynapticsPrivate *priv, struct SynapticsHwState *hw) { SynapticsSHM *para = priv->synpara; int finger; /* finger detection thru pressure and threshold */ finger = ((hw->z > para->finger_press) && priv->finger_state < FS_PRESSED) ? FS_PRESSED : ((hw->z > para->finger_high) && priv->finger_state < FS_TOUCHED) ? FS_TOUCHED : ((hw->z < para->finger_low) && priv->finger_state > FS_UNTOUCHED) ? FS_UNTOUCHED : priv->finger_state; if (!para->palm_detect) return finger; /* palm detection */ if (finger) { if ((hw->z > para->palm_min_z) && (hw->fingerWidth > para->palm_min_width)) priv->palm = TRUE; } else { priv->palm = FALSE; } if (hw->x == 0) priv->avg_width = 0; else priv->avg_width += (hw->fingerWidth - priv->avg_width + 1) / 2; if (finger && !priv->finger_state) { int safe_width = MAX(hw->fingerWidth, priv->avg_width); if (hw->numFingers > 1) finger = TRUE; /* more than one finger -> not a palm */ else if ((safe_width < 6) && (priv->prev_z < para->finger_high)) finger = TRUE; /* thin finger, distinct touch -> not a palm */ else if ((safe_width < 7) && (priv->prev_z < para->finger_high / 2)) finger = TRUE; /* thin finger, distinct touch -> not a palm */ else if (hw->z > priv->prev_z + 1) /* z not stable, may be a palm */ finger = FALSE; else if (hw->z < priv->prev_z - 5) /* z not stable, may be a palm */ finger = FALSE; else if (hw->z > para->palm_min_z) /* z too large -> probably palm */ finger = FALSE; else if (hw->fingerWidth > para->palm_min_width) /* finger width too large -> probably palm */ finger = FALSE; } priv->prev_z = hw->z; if (priv->palm) finger = FALSE; return finger; } static void SelectTapButton(SynapticsPrivate *priv, edge_type edge) { TapEvent tap; if (priv->synpara->touchpad_off == 2) { priv->tap_button = 0; return; } switch (priv->tap_max_fingers) { case 1: default: switch (edge) { case RIGHT_TOP_EDGE: DBG(7, ErrorF("right top edge\n")); tap = RT_TAP; break; case RIGHT_BOTTOM_EDGE: DBG(7, ErrorF("right bottom edge\n")); tap = RB_TAP; break; case LEFT_TOP_EDGE: DBG(7, ErrorF("left top edge\n")); tap = LT_TAP; break; case LEFT_BOTTOM_EDGE: DBG(7, ErrorF("left bottom edge\n")); tap = LB_TAP; break; default: DBG(7, ErrorF("no edge\n")); tap = F1_TAP; break; } break; case 2: DBG(7, ErrorF("two finger tap\n")); tap = F2_TAP; break; case 3: DBG(7, ErrorF("three finger tap\n")); tap = F3_TAP; break; } priv->tap_button = priv->synpara->tap_action[tap]; priv->tap_button = clamp(priv->tap_button, 0, SYN_MAX_BUTTONS); } static void SetTapState(SynapticsPrivate *priv, enum TapState tap_state, int millis) { SynapticsSHM *para = priv->synpara; DBG(7, ErrorF("SetTapState - %d -> %d (millis:%d)\n", priv->tap_state, tap_state, millis)); switch (tap_state) { case TS_START: priv->tap_button_state = TBS_BUTTON_UP; priv->tap_max_fingers = 0; break; case TS_1: priv->tap_button_state = TBS_BUTTON_UP; break; case TS_2A: if (para->fast_taps) priv->tap_button_state = TBS_BUTTON_DOWN; else priv->tap_button_state = TBS_BUTTON_UP; break; case TS_2B: priv->tap_button_state = TBS_BUTTON_UP; break; case TS_3: priv->tap_button_state = TBS_BUTTON_DOWN; break; case TS_SINGLETAP: if (para->fast_taps) priv->tap_button_state = TBS_BUTTON_UP; else priv->tap_button_state = TBS_BUTTON_DOWN; priv->touch_on.millis = millis; break; default: break; } priv->tap_state = tap_state; } static void SetMovingState(SynapticsPrivate *priv, enum MovingState moving_state, int millis) { DBG(7, ErrorF("SetMovingState - %d -> %d center at %d/%d (millis:%d)\n", priv->moving_state, moving_state,priv->hwState.x, priv->hwState.y, millis)); if (moving_state == MS_TRACKSTICK) { priv->trackstick_neutral_x = priv->hwState.x; priv->trackstick_neutral_y = priv->hwState.y; } priv->moving_state = moving_state; } static int GetTimeOut(SynapticsPrivate *priv) { SynapticsSHM *para = priv->synpara; switch (priv->tap_state) { case TS_1: case TS_3: case TS_5: return para->tap_time; case TS_SINGLETAP: return para->click_time; case TS_2A: return para->single_tap_timeout; case TS_2B: return para->tap_time_2; case TS_4: return para->locked_drag_time; default: return -1; /* No timeout */ } } static int HandleTapProcessing(SynapticsPrivate *priv, struct SynapticsHwState *hw, edge_type edge, enum FingerState finger) { SynapticsSHM *para = priv->synpara; Bool touch, release, is_timeout, move; int timeleft, timeout; int delay = 1000000000; if (priv->palm) return delay; touch = finger && !priv->finger_state; release = !finger && priv->finger_state; move = ((priv->tap_max_fingers <= 1) && ((abs(hw->x - priv->touch_on.x) >= para->tap_move) || (abs(hw->y - priv->touch_on.y) >= para->tap_move))); if (touch) { priv->touch_on.x = hw->x; priv->touch_on.y = hw->y; priv->touch_on.millis = hw->millis; } else if (release) { priv->touch_on.millis = hw->millis; } if (hw->z > para->finger_high) if (priv->tap_max_fingers < hw->numFingers) priv->tap_max_fingers = hw->numFingers; timeout = GetTimeOut(priv); timeleft = TIME_DIFF(priv->touch_on.millis + timeout, hw->millis); is_timeout = timeleft <= 0; restart: switch (priv->tap_state) { case TS_START: if (touch) SetTapState(priv, TS_1, hw->millis); break; case TS_1: if (move) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, hw->millis); SetTapState(priv, TS_MOVE, hw->millis); goto restart; } else if (is_timeout) { if (finger == FS_TOUCHED) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, hw->millis); } else if (finger == FS_PRESSED) { SetMovingState(priv, MS_TRACKSTICK, hw->millis); } SetTapState(priv, TS_MOVE, hw->millis); goto restart; } else if (release) { SelectTapButton(priv, edge); SetTapState(priv, TS_2A, hw->millis); } break; case TS_MOVE: if (move && priv->moving_state == MS_TRACKSTICK) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, hw->millis); } if (release) { SetMovingState(priv, MS_FALSE, hw->millis); SetTapState(priv, TS_START, hw->millis); } break; case TS_2A: if (touch) SetTapState(priv, TS_3, hw->millis); else if (is_timeout) SetTapState(priv, TS_SINGLETAP, hw->millis); break; case TS_2B: if (touch) { SetTapState(priv, TS_3, hw->millis); } else if (is_timeout) { SetTapState(priv, TS_START, hw->millis); priv->tap_button_state = TBS_BUTTON_DOWN_UP; } break; case TS_SINGLETAP: if (touch) SetTapState(priv, TS_1, hw->millis); else if (is_timeout) SetTapState(priv, TS_START, hw->millis); break; case TS_3: if (move) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, hw->millis); SetTapState(priv, TS_DRAG, hw->millis); goto restart; } else if (is_timeout) { if (finger == FS_TOUCHED) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, hw->millis); } else if (finger == FS_PRESSED) { SetMovingState(priv, MS_TRACKSTICK, hw->millis); } SetTapState(priv, TS_DRAG, hw->millis); goto restart; } else if (release) { SetTapState(priv, TS_2B, hw->millis); } break; case TS_DRAG: if (move) SetMovingState(priv, MS_TOUCHPAD_RELATIVE, hw->millis); if (release) { SetMovingState(priv, MS_FALSE, hw->millis); if (para->locked_drags) { SetTapState(priv, TS_4, hw->millis); } else { SetTapState(priv, TS_START, hw->millis); } } break; case TS_4: if (is_timeout) { SetTapState(priv, TS_START, hw->millis); goto restart; } if (touch) SetTapState(priv, TS_5, hw->millis); break; case TS_5: if (is_timeout || move) { SetTapState(priv, TS_DRAG, hw->millis); goto restart; } else if (release) { SetMovingState(priv, MS_FALSE, hw->millis); SetTapState(priv, TS_START, hw->millis); } break; } timeout = GetTimeOut(priv); if (timeout >= 0) { timeleft = TIME_DIFF(priv->touch_on.millis + timeout, hw->millis); delay = clamp(timeleft, 1, delay); } return delay; } #define HIST(a) (priv->move_hist[((priv->hist_index - (a) + SYNAPTICS_MOVE_HISTORY) % SYNAPTICS_MOVE_HISTORY)]) static void store_history(SynapticsPrivate *priv, int x, int y, unsigned int millis) { int idx = (priv->hist_index + 1) % SYNAPTICS_MOVE_HISTORY; priv->move_hist[idx].x = x; priv->move_hist[idx].y = y; priv->move_hist[idx].millis = millis; priv->hist_index = idx; } /* * Estimate the slope for the data sequence [x3, x2, x1, x0] by using * linear regression to fit a line to the data and use the slope of the * line. */ static double estimate_delta(double x0, double x1, double x2, double x3) { return x0 * 0.3 + x1 * 0.1 - x2 * 0.1 - x3 * 0.3; } static int ComputeDeltas(SynapticsPrivate *priv, struct SynapticsHwState *hw, edge_type edge, int *dxP, int *dyP) { SynapticsSHM *para = priv->synpara; enum MovingState moving_state; int dist; double dx, dy; double speed, integral; int delay = 1000000000; dx = dy = 0; moving_state = priv->moving_state; if (moving_state == MS_FALSE) { switch (priv->tap_state) { case TS_MOVE: case TS_DRAG: moving_state = MS_TOUCHPAD_RELATIVE; break; case TS_1: case TS_3: case TS_5: if (hw->numFingers == 1) moving_state = MS_TOUCHPAD_RELATIVE; break; default: break; } } if (moving_state && !priv->palm && !priv->vert_scroll_edge_on && !priv->horiz_scroll_edge_on && !priv->vert_scroll_twofinger_on && !priv->horiz_scroll_twofinger_on && !priv->circ_scroll_on) { delay = MIN(delay, 13); if (priv->count_packet_finger > 3) { /* min. 3 packets */ double tmpf; int x_edge_speed = 0; int y_edge_speed = 0; double dtime = (hw->millis - HIST(0).millis) / 1000.0; if (priv->moving_state == MS_TRACKSTICK) { dx = (hw->x - priv->trackstick_neutral_x); dy = (hw->y - priv->trackstick_neutral_y); dx = dx * dtime * para->trackstick_speed; dy = dy * dtime * para->trackstick_speed; } else if (moving_state == MS_TOUCHPAD_RELATIVE) { dx = estimate_delta(hw->x, HIST(0).x, HIST(1).x, HIST(2).x); dy = estimate_delta(hw->y, HIST(0).y, HIST(1).y, HIST(2).y); if ((priv->tap_state == TS_DRAG) || para->edge_motion_use_always) { int minZ = para->edge_motion_min_z; int maxZ = para->edge_motion_max_z; int minSpd = para->edge_motion_min_speed; int maxSpd = para->edge_motion_max_speed; int edge_speed; if (hw->z <= minZ) { edge_speed = minSpd; } else if (hw->z >= maxZ) { edge_speed = maxSpd; } else { edge_speed = minSpd + (hw->z - minZ) * (maxSpd - minSpd) / (maxZ - minZ); } if (!priv->synpara->circular_pad) { /* on rectangular pad */ if (edge & RIGHT_EDGE) { x_edge_speed = edge_speed; } else if (edge & LEFT_EDGE) { x_edge_speed = -edge_speed; } if (edge & TOP_EDGE) { y_edge_speed = -edge_speed; } else if (edge & BOTTOM_EDGE) { y_edge_speed = edge_speed; } } else if (edge) { /* at edge of circular pad */ double relX, relY; relative_coords(priv, hw->x, hw->y, &relX, &relY); x_edge_speed = (int)(edge_speed * relX); y_edge_speed = (int)(edge_speed * relY); } } } /* speed depending on distance/packet */ dist = move_distance(dx, dy); speed = dist * para->accl; if (speed > para->max_speed) { /* set max speed factor */ speed = para->max_speed; } else if (speed < para->min_speed) { /* set min speed factor */ speed = para->min_speed; } /* modify speed according to pressure */ if (priv->moving_state == MS_TOUCHPAD_RELATIVE) { int minZ = para->press_motion_min_z; int maxZ = para->press_motion_max_z; double minFctr = para->press_motion_min_factor; double maxFctr = para->press_motion_max_factor; if (hw->z <= minZ) { speed *= minFctr; } else if (hw->z >= maxZ) { speed *= maxFctr; } else { speed *= minFctr + (hw->z - minZ) * (maxFctr - minFctr) / (maxZ - minZ); } } /* save the fraction, report the integer part */ tmpf = dx * speed + x_edge_speed * dtime + priv->frac_x; priv->frac_x = modf(tmpf, &integral); dx = integral; tmpf = dy * speed + y_edge_speed * dtime + priv->frac_y; priv->frac_y = modf(tmpf, &integral); dy = integral; } priv->count_packet_finger++; } else { /* reset packet counter */ priv->count_packet_finger = 0; } /* Add guest device movements */ if (!para->guestmouse_off) { dx += hw->guest_dx; dy += hw->guest_dy; } *dxP = dx; *dyP = dy; /* generate a history of the absolute positions */ store_history(priv, hw->x, hw->y, hw->millis); return delay; } struct ScrollData { int left, right, up, down; }; static void start_coasting(SynapticsPrivate *priv, struct SynapticsHwState *hw, edge_type edge, Bool vertical) { SynapticsSHM *para = priv->synpara; priv->autoscroll_y = 0.0; priv->autoscroll_x = 0.0; if ((priv->scroll_packet_count > 3) && (para->coasting_speed > 0.0)) { double pkt_time = (HIST(0).millis - HIST(3).millis) / 1000.0; if (vertical) { double dy = estimate_delta(HIST(0).y, HIST(1).y, HIST(2).y, HIST(3).y); int sdelta = para->scroll_dist_vert; if ((edge & RIGHT_EDGE) && pkt_time > 0 && sdelta > 0) { double scrolls_per_sec = dy / pkt_time / sdelta; if (fabs(scrolls_per_sec) >= para->coasting_speed) { priv->autoscroll_yspd = scrolls_per_sec; priv->autoscroll_y = (hw->y - priv->scroll_y) / (double)sdelta; } } } else { double dx = estimate_delta(HIST(0).x, HIST(1).x, HIST(2).x, HIST(3).x); int sdelta = para->scroll_dist_horiz; if ((edge & BOTTOM_EDGE) && pkt_time > 0 && sdelta > 0) { double scrolls_per_sec = dx / pkt_time / sdelta; if (fabs(scrolls_per_sec) >= para->coasting_speed) { priv->autoscroll_xspd = scrolls_per_sec; priv->autoscroll_x = (hw->x - priv->scroll_x) / (double)sdelta; } } } } priv->scroll_packet_count = 0; } static void stop_coasting(SynapticsPrivate *priv) { priv->autoscroll_xspd = 0; priv->autoscroll_yspd = 0; priv->scroll_packet_count = 0; } static int HandleScrolling(SynapticsPrivate *priv, struct SynapticsHwState *hw, edge_type edge, Bool finger, struct ScrollData *sd) { SynapticsSHM *para = priv->synpara; int delay = 1000000000; sd->left = sd->right = sd->up = sd->down = 0; if (priv->synpara->touchpad_off == 2) { stop_coasting(priv); priv->circ_scroll_on = FALSE; priv->vert_scroll_edge_on = FALSE; priv->horiz_scroll_edge_on = FALSE; priv->vert_scroll_twofinger_on = FALSE; priv->horiz_scroll_twofinger_on = FALSE; return delay; } /* scroll detection */ if (finger && !priv->finger_state) { stop_coasting(priv); if (para->circular_scrolling) { if ((para->circular_trigger == 0 && edge) || (para->circular_trigger == 1 && edge & TOP_EDGE) || (para->circular_trigger == 2 && edge & TOP_EDGE && edge & RIGHT_EDGE) || (para->circular_trigger == 3 && edge & RIGHT_EDGE) || (para->circular_trigger == 4 && edge & RIGHT_EDGE && edge & BOTTOM_EDGE) || (para->circular_trigger == 5 && edge & BOTTOM_EDGE) || (para->circular_trigger == 6 && edge & BOTTOM_EDGE && edge & LEFT_EDGE) || (para->circular_trigger == 7 && edge & LEFT_EDGE) || (para->circular_trigger == 8 && edge & LEFT_EDGE && edge & TOP_EDGE)) { priv->circ_scroll_on = TRUE; priv->circ_scroll_vert = TRUE; priv->scroll_a = angle(priv, hw->x, hw->y); DBG(7, ErrorF("circular scroll detected on edge\n")); } } } if (!priv->circ_scroll_on) { if (finger) { if (hw->numFingers == 2) { if (!priv->vert_scroll_twofinger_on && (para->scroll_twofinger_vert) && (para->scroll_dist_vert != 0)) { priv->vert_scroll_twofinger_on = TRUE; priv->vert_scroll_edge_on = FALSE; priv->scroll_y = hw->y; DBG(7, ErrorF("vert two-finger scroll detected\n")); } if (!priv->horiz_scroll_twofinger_on && (para->scroll_twofinger_horiz) && (para->scroll_dist_horiz != 0)) { priv->horiz_scroll_twofinger_on = TRUE; priv->horiz_scroll_edge_on = FALSE; priv->scroll_x = hw->x; DBG(7, ErrorF("horiz two-finger scroll detected\n")); } } } if (finger && !priv->finger_state) { if (!priv->vert_scroll_twofinger_on && !priv->horiz_scroll_twofinger_on) { if ((para->scroll_edge_vert) && (para->scroll_dist_vert != 0) && (edge & RIGHT_EDGE)) { priv->vert_scroll_edge_on = TRUE; priv->scroll_y = hw->y; DBG(7, ErrorF("vert edge scroll detected on right edge\n")); } if ((para->scroll_edge_horiz) && (para->scroll_dist_horiz != 0) && (edge & BOTTOM_EDGE)) { priv->horiz_scroll_edge_on = TRUE; priv->scroll_x = hw->x; DBG(7, ErrorF("horiz edge scroll detected on bottom edge\n")); } } } } { Bool oldv = priv->vert_scroll_edge_on || (priv->circ_scroll_on && priv->circ_scroll_vert); Bool oldh = priv->horiz_scroll_edge_on || (priv->circ_scroll_on && !priv->circ_scroll_vert); if (priv->circ_scroll_on && !finger) { /* circular scroll locks in until finger is raised */ DBG(7, ErrorF("cicular scroll off\n")); priv->circ_scroll_on = FALSE; } if (hw->numFingers < 2) { if (priv->vert_scroll_twofinger_on) { DBG(7, ErrorF("vert two-finger scroll off\n")); priv->vert_scroll_twofinger_on = FALSE; } if (priv->horiz_scroll_twofinger_on) { DBG(7, ErrorF("horiz two-finger scroll off\n")); priv->horiz_scroll_twofinger_on = FALSE; } } if (priv->vert_scroll_edge_on && (!(edge & RIGHT_EDGE) || !finger)) { DBG(7, ErrorF("vert edge scroll off\n")); priv->vert_scroll_edge_on = FALSE; } if (priv->horiz_scroll_edge_on && (!(edge & BOTTOM_EDGE) || !finger)) { DBG(7, ErrorF("horiz edge scroll off\n")); priv->horiz_scroll_edge_on = FALSE; } /* If we were corner edge scrolling (coasting), * but no longer in corner or raised a finger, then stop coasting. */ if (para->scroll_edge_corner && (priv->autoscroll_xspd || priv->autoscroll_yspd)) { Bool is_in_corner = ((edge & RIGHT_EDGE) && (edge & (TOP_EDGE | BOTTOM_EDGE))) || ((edge & BOTTOM_EDGE) && (edge & (LEFT_EDGE | RIGHT_EDGE))) ; if (!is_in_corner || !finger) { DBG(7, ErrorF("corner edge scroll off\n")); stop_coasting(priv); } } /* if we were scrolling, but couldn't corner edge scroll, * and are no longer scrolling, then start coasting */ if ((oldv || oldh) && !para->scroll_edge_corner && !(priv->circ_scroll_on || priv->vert_scroll_edge_on || priv->horiz_scroll_edge_on)) { start_coasting(priv, hw, edge, oldv); } } /* if hitting a corner (top right or bottom right) while vertical * scrolling is active, consider starting corner edge scrolling or * switching over to circular scrolling smoothly */ if (priv->vert_scroll_edge_on && !priv->horiz_scroll_edge_on && (edge & RIGHT_EDGE) && (edge & (TOP_EDGE | BOTTOM_EDGE))) { if (para->scroll_edge_corner) { if (priv->autoscroll_yspd == 0) { /* FYI: We can generate multiple start_coasting requests if * we're in the corner, but we were moving so slowly when we * got here that we didn't actually start coasting. */ DBG(7, ErrorF("corner edge scroll on\n")); start_coasting(priv, hw, edge, TRUE); } } else if (para->circular_scrolling) { priv->vert_scroll_edge_on = FALSE; priv->circ_scroll_on = TRUE; priv->circ_scroll_vert = TRUE; priv->scroll_a = angle(priv, hw->x, hw->y); DBG(7, ErrorF("switching to circular scrolling\n")); } } /* Same treatment for horizontal scrolling */ if (priv->horiz_scroll_edge_on && !priv->vert_scroll_edge_on && (edge & BOTTOM_EDGE) && (edge & (LEFT_EDGE | RIGHT_EDGE))) { if (para->scroll_edge_corner) { if (priv->autoscroll_xspd == 0) { /* FYI: We can generate multiple start_coasting requests if * we're in the corner, but we were moving so slowly when we * got here that we didn't actually start coasting. */ DBG(7, ErrorF("corner edge scroll on\n")); start_coasting(priv, hw, edge, FALSE); } } else if (para->circular_scrolling) { priv->horiz_scroll_edge_on = FALSE; priv->circ_scroll_on = TRUE; priv->circ_scroll_vert = FALSE; priv->scroll_a = angle(priv, hw->x, hw->y); DBG(7, ErrorF("switching to circular scrolling\n")); } } if (priv->vert_scroll_edge_on || priv->horiz_scroll_edge_on || priv->vert_scroll_twofinger_on || priv->horiz_scroll_twofinger_on || priv->circ_scroll_on) { priv->scroll_packet_count++; } if (priv->vert_scroll_edge_on || priv->vert_scroll_twofinger_on) { /* + = down, - = up */ int delta = para->scroll_dist_vert; if (delta > 0) { while (hw->y - priv->scroll_y > delta) { sd->down++; priv->scroll_y += delta; } while (hw->y - priv->scroll_y < -delta) { sd->up++; priv->scroll_y -= delta; } } } if (priv->horiz_scroll_edge_on || priv->horiz_scroll_twofinger_on) { /* + = right, - = left */ int delta = para->scroll_dist_horiz; if (delta > 0) { while (hw->x - priv->scroll_x > delta) { sd->right++; priv->scroll_x += delta; } while (hw->x - priv->scroll_x < -delta) { sd->left++; priv->scroll_x -= delta; } } } if (priv->circ_scroll_on) { /* + = counter clockwise, - = clockwise */ double delta = para->scroll_dist_circ; if (delta >= 0.005) { while (diffa(priv->scroll_a, angle(priv, hw->x, hw->y)) > delta) { if (priv->circ_scroll_vert) sd->up++; else sd->right++; priv->scroll_a += delta; if (priv->scroll_a > M_PI) priv->scroll_a -= 2 * M_PI; } while (diffa(priv->scroll_a, angle(priv, hw->x, hw->y)) < -delta) { if (priv->circ_scroll_vert) sd->down++; else sd->left++; priv->scroll_a -= delta; if (priv->scroll_a < -M_PI) priv->scroll_a += 2 * M_PI; } } } if (priv->autoscroll_yspd) { double dtime = (hw->millis - HIST(0).millis) / 1000.0; priv->autoscroll_y += priv->autoscroll_yspd * dtime; delay = MIN(delay, 20); while (priv->autoscroll_y > 1.0) { sd->down++; priv->autoscroll_y -= 1.0; } while (priv->autoscroll_y < -1.0) { sd->up++; priv->autoscroll_y += 1.0; } } if (priv->autoscroll_xspd) { double dtime = (hw->millis - HIST(0).millis) / 1000.0; priv->autoscroll_x += priv->autoscroll_xspd * dtime; delay = MIN(delay, 20); while (priv->autoscroll_x > 1.0) { sd->right++; priv->autoscroll_x -= 1.0; } while (priv->autoscroll_x < -1.0) { sd->left++; priv->autoscroll_x += 1.0; } } return delay; } /* * React on changes in the hardware state. This function is called every time * the hardware state changes. The return value is used to specify how many * milliseconds to wait before calling the function again if no state change * occurs. */ static int HandleState(LocalDevicePtr local, struct SynapticsHwState *hw) { SynapticsPrivate *priv = (SynapticsPrivate *) (local->private); SynapticsSHM *para = priv->synpara; int finger; int dx, dy, buttons, rep_buttons, id; edge_type edge; int change; struct ScrollData scroll; int double_click, repeat_delay; int delay = 1000000000; int timeleft; int i; /* update hardware state in shared memory */ para->x = hw->x; para->y = hw->y; para->z = hw->z; para->numFingers = hw->numFingers; para->fingerWidth = hw->fingerWidth; para->left = hw->left; para->right = hw->right; para->up = hw->up; para->down = hw->down; for (i = 0; i < 8; i++) para->multi[i] = hw->multi[i]; para->middle = hw->middle; para->guest_left = hw->guest_left; para->guest_mid = hw->guest_mid; para->guest_right = hw->guest_right; para->guest_dx = hw->guest_dx; para->guest_dy = hw->guest_dy; /* If touchpad is switched off, we skip the whole thing and return delay */ if (para->touchpad_off == 1) return delay; /* Treat the first two multi buttons as up/down for now. */ hw->up |= hw->multi[0]; hw->down |= hw->multi[1]; if (!para->guestmouse_off) { hw->left |= hw->guest_left; hw->middle |= hw->guest_mid; hw->right |= hw->guest_right; } /* 3rd button emulation */ hw->middle |= HandleMidButtonEmulation(priv, hw, &delay); /* Two finger emulation */ if (hw->z >= para->emulate_twofinger_z && hw->numFingers == 1) { hw->numFingers = 2; } /* Up/Down button scrolling or middle/double click */ double_click = FALSE; if (!para->updown_button_scrolling) { if (hw->down) { /* map down button to middle button */ hw->middle = TRUE; } if (hw->up) { /* up button generates double click */ if (!priv->prev_up) double_click = TRUE; } priv->prev_up = hw->up; /* reset up/down button events */ hw->up = hw->down = FALSE; } /* Left/right button scrolling, or middle clicks */ if (!para->leftright_button_scrolling) { if (hw->multi[2] || hw->multi[3]) hw->middle = TRUE; /* reset left/right button events */ hw->multi[2] = hw->multi[3] = FALSE; } /* * Some touchpads have a scroll wheel region where a very large X * coordinate is reported. For such touchpads, we adjust the X * coordinate to eliminate the discontinuity. */ if (hw->x <= XMAX_VALID) { if (priv->largest_valid_x < hw->x) priv->largest_valid_x = hw->x; } else { hw->x = priv->largest_valid_x; } edge = edge_detection(priv, hw->x, hw->y); finger = SynapticsDetectFinger(priv, hw); /* tap and drag detection */ timeleft = HandleTapProcessing(priv, hw, edge, finger); if (timeleft > 0) delay = MIN(delay, timeleft); timeleft = HandleScrolling(priv, hw, edge, finger, &scroll); if (timeleft > 0) delay = MIN(delay, timeleft); timeleft = ComputeDeltas(priv, hw, edge, &dx, &dy); delay = MIN(delay, timeleft); rep_buttons = ((para->updown_button_repeat ? 0x18 : 0) | (para->leftright_button_repeat ? 0x60 : 0)); buttons = ((hw->left ? 0x01 : 0) | (hw->middle ? 0x02 : 0) | (hw->right ? 0x04 : 0) | (hw->up ? 0x08 : 0) | (hw->down ? 0x10 : 0) | (hw->multi[2] ? 0x20 : 0) | (hw->multi[3] ? 0x40 : 0)); if (priv->tap_button > 0) { int tap_mask = 1 << (priv->tap_button - 1); if (priv->tap_button_state == TBS_BUTTON_DOWN_UP) { if (tap_mask != (priv->lastButtons & tap_mask)) { xf86PostButtonEvent(local->dev, FALSE, priv->tap_button, TRUE, 0, 0); priv->lastButtons |= tap_mask; } priv->tap_button_state = TBS_BUTTON_UP; } if (priv->tap_button_state == TBS_BUTTON_DOWN) buttons |= tap_mask; } /* Post events */ if (dx || dy) xf86PostMotionEvent(local->dev, 0, 0, 2, dx, dy); change = buttons ^ priv->lastButtons; while (change) { id = ffs(change); /* number of first set bit 1..32 is returned */ change &= ~(1 << (id - 1)); xf86PostButtonEvent(local->dev, FALSE, id, (buttons & (1 << (id - 1))), 0, 0); } while (scroll.up-- > 0) { xf86PostButtonEvent(local->dev, FALSE, 4, !hw->up, 0, 0); xf86PostButtonEvent(local->dev, FALSE, 4, hw->up, 0, 0); } while (scroll.down-- > 0) { xf86PostButtonEvent(local->dev, FALSE, 5, !hw->down, 0, 0); xf86PostButtonEvent(local->dev, FALSE, 5, hw->down, 0, 0); } while (scroll.left-- > 0) { xf86PostButtonEvent(local->dev, FALSE, 6, TRUE, 0, 0); xf86PostButtonEvent(local->dev, FALSE, 6, FALSE, 0, 0); } while (scroll.right-- > 0) { xf86PostButtonEvent(local->dev, FALSE, 7, TRUE, 0, 0); xf86PostButtonEvent(local->dev, FALSE, 7, FALSE, 0, 0); } if (double_click) { int i; for (i = 0; i < 2; i++) { xf86PostButtonEvent(local->dev, FALSE, 1, !hw->left, 0, 0); xf86PostButtonEvent(local->dev, FALSE, 1, hw->left, 0, 0); } } /* Handle auto repeat buttons */ repeat_delay = clamp(para->scroll_button_repeat, SBR_MIN, SBR_MAX); if (((hw->up || hw->down) && para->updown_button_repeat && para->updown_button_scrolling) || ((hw->multi[2] || hw->multi[3]) && para->leftright_button_repeat && para->leftright_button_scrolling)) { priv->repeatButtons = buttons & rep_buttons; if (!priv->nextRepeat) { priv->nextRepeat = hw->millis + repeat_delay * 2; } } else { priv->repeatButtons = 0; priv->nextRepeat = 0; } if (priv->repeatButtons) { timeleft = TIME_DIFF(priv->nextRepeat, hw->millis); if (timeleft > 0) delay = MIN(delay, timeleft); if (timeleft <= 0) { int change, id; change = priv->repeatButtons; while (change) { id = ffs(change); change &= ~(1 << (id - 1)); xf86PostButtonEvent(local->dev, FALSE, id, FALSE, 0, 0); xf86PostButtonEvent(local->dev, FALSE, id, TRUE, 0, 0); } priv->nextRepeat = hw->millis + repeat_delay; delay = MIN(delay, repeat_delay); } } /* Save old values of some state variables */ priv->finger_state = finger; priv->lastButtons = buttons; return delay; } static int ControlProc(LocalDevicePtr local, xDeviceCtl * control) { DBG(3, ErrorF("Control Proc called\n")); return Success; } static void CloseProc(LocalDevicePtr local) { DBG(3, ErrorF("Close Proc called\n")); } static int SwitchMode(ClientPtr client, DeviceIntPtr dev, int mode) { ErrorF("SwitchMode called\n"); return Success; } static Bool ConvertProc(LocalDevicePtr local, int first, int num, int v0, int v1, int v2, int v3, int v4, int v5, int *x, int *y) { if (first != 0 || num != 2) return FALSE; *x = v0; *y = v1; return TRUE; } static Bool QueryHardware(LocalDevicePtr local) { SynapticsPrivate *priv = (SynapticsPrivate *) local->private; SynapticsSHM *para = priv->synpara; priv->comm.protoBufTail = 0; if (priv->proto_ops->QueryHardware(local, &priv->synhw)) { para->synhw = priv->synhw; if (priv->fifofd != -1) { xf86CloseSerial(priv->fifofd); priv->fifofd = -1; } return TRUE; } if (priv->fifofd == -1) { xf86Msg(X_ERROR, "%s no synaptics touchpad detected and no repeater device\n", local->name); return FALSE; } xf86Msg(X_PROBED, "%s no synaptics touchpad, data piped to repeater fifo\n", local->name); priv->proto_ops->DeviceOffHook(local); return TRUE; }