/* * Copyright © 2004-2008 Red Hat, 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 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: * Kristian Høgsberg (krh@redhat.com) * Adam Jackson (ajax@redhat.com) * Peter Hutterer (peter.hutterer@redhat.com) * Oliver McFadden (oliver.mcfadden@nokia.com) * Thomas H.P. Andersen (phomes@gmail.com) */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "evdev.h" #include "axis_labels.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef XI_PROP_PRODUCT_ID #define XI_PROP_PRODUCT_ID "Device Product ID" #endif #ifndef XI_PROP_VIRTUAL_DEVICE #define XI_PROP_VIRTUAL_DEVICE "Virtual Device" #endif /* removed from server, purge when dropping support for server 1.10 */ #define XI86_SEND_DRAG_EVENTS 0x08 #define ArrayLength(a) (sizeof(a) / (sizeof((a)[0]))) #define MIN_KEYCODE 8 #define CAPSFLAG 1 #define NUMFLAG 2 #define SCROLLFLAG 4 #define MODEFLAG 8 #define COMPOSEFLAG 16 #ifndef ABS_MT_SLOT #define ABS_MT_SLOT 0x2f #endif #ifndef ABS_MT_TRACKING_ID #define ABS_MT_TRACKING_ID 0x39 #endif #ifndef XI86_SERVER_FD #define XI86_SERVER_FD 0x20 #endif /* Any of those triggers a proximity event */ static int proximity_bits[] = { BTN_TOOL_PEN, BTN_TOOL_RUBBER, BTN_TOOL_BRUSH, BTN_TOOL_PENCIL, BTN_TOOL_AIRBRUSH, BTN_TOOL_FINGER, BTN_TOOL_MOUSE, BTN_TOOL_LENS, }; static int EvdevOn(DeviceIntPtr); static int EvdevCache(InputInfoPtr pInfo); static void EvdevKbdCtrl(DeviceIntPtr device, KeybdCtrl *ctrl); static int EvdevSwitchMode(ClientPtr client, DeviceIntPtr device, int mode); static BOOL EvdevGrabDevice(InputInfoPtr pInfo, int grab, int ungrab); static void EvdevSetCalibration(InputInfoPtr pInfo, int num_calibration, int calibration[4]); static int EvdevOpenDevice(InputInfoPtr pInfo); static void EvdevCloseDevice(InputInfoPtr pInfo); static void EvdevInitAxesLabels(EvdevPtr pEvdev, int mode, int natoms, Atom *atoms); static void EvdevInitOneAxisLabel(EvdevPtr pEvdev, int mapped_axis, const char **labels, int label_idx, Atom *atoms); static void EvdevInitButtonLabels(EvdevPtr pEvdev, int natoms, Atom *atoms); static void EvdevInitProperty(DeviceIntPtr dev); static int EvdevSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val, BOOL checkonly); static Atom prop_product_id; static Atom prop_invert; static Atom prop_calibration; static Atom prop_swap; static Atom prop_axis_label; static Atom prop_btn_label; static Atom prop_device; static Atom prop_virtual; static Atom prop_scroll_dist; static int EvdevSwitchMode(ClientPtr client, DeviceIntPtr device, int mode) { InputInfoPtr pInfo; EvdevPtr pEvdev; int val; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; if (pEvdev->flags & EVDEV_RELATIVE_EVENTS) { if (mode == Relative) return Success; else return XI_BadMode; } switch (mode) { case Absolute: pEvdev->flags &= ~EVDEV_RELATIVE_MODE; if (valuator_mask_fetch(pEvdev->old_vals, 0, &val)) valuator_mask_set(pEvdev->abs_vals, 0, val); if (valuator_mask_fetch(pEvdev->old_vals, 1, &val)) valuator_mask_set(pEvdev->abs_vals, 1, val); valuator_mask_zero(pEvdev->old_vals); break; case Relative: pEvdev->flags |= EVDEV_RELATIVE_MODE; if (valuator_mask_fetch(pEvdev->abs_vals, 0, &val)) valuator_mask_set(pEvdev->old_vals, 0, val); if (valuator_mask_fetch(pEvdev->abs_vals, 1, &val)) valuator_mask_set(pEvdev->old_vals, 1, val); valuator_mask_unset(pEvdev->abs_vals, 0); valuator_mask_unset(pEvdev->abs_vals, 1); break; default: return XI_BadMode; } return Success; } static inline int EvdevBitIsSet(const unsigned long *array, int bit) { return !!(array[bit / LONG_BITS] & (1LL << (bit % LONG_BITS))); } static inline void EvdevSetBit(unsigned long *array, int bit) { array[bit / LONG_BITS] |= (1LL << (bit % LONG_BITS)); } static int EvdevGetMajorMinor(InputInfoPtr pInfo) { struct stat st; if (fstat(pInfo->fd, &st) == -1) { xf86IDrvMsg(pInfo, X_ERROR, "stat failed (%s). cannot check for duplicates.\n", strerror(errno)); return 0; } return st.st_rdev; } /** * Return TRUE if one of the devices we know about has the same min/maj * number. */ static BOOL EvdevIsDuplicate(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; InputInfoPtr d; nt_list_for_each_entry(d, xf86FirstLocalDevice(), next) { EvdevPtr e; if (strcmp(d->drv->driverName, "evdev") != 0) continue; e = (EvdevPtr)d->private; if (e != pEvdev && e->min_maj && e->min_maj == pEvdev->min_maj) return TRUE; } return FALSE; } static BOOL EvdevDeviceIsVirtual(const char* devicenode) { struct udev *udev = NULL; struct udev_device *device = NULL; struct stat st; int rc = FALSE; const char *devpath; udev = udev_new(); if (!udev) goto out; if (stat(devicenode, &st) == -1) goto out; device = udev_device_new_from_devnum(udev, 'c', st.st_rdev); if (!device) goto out; devpath = udev_device_get_devpath(device); if (!devpath) goto out; if (strstr(devpath, "LNXSYSTM")) rc = TRUE; out: udev_device_unref(device); udev_unref(udev); return rc; } static EventQueuePtr EvdevNextInQueue(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; if (pEvdev->num_queue >= EVDEV_MAXQUEUE) { LogMessageVerbSigSafe(X_WARNING, 0, "dropping event due to full queue!\n"); return NULL; } pEvdev->num_queue++; return &pEvdev->queue[pEvdev->num_queue - 1]; } void EvdevQueueKbdEvent(InputInfoPtr pInfo, struct input_event *ev, int value) { int code = ev->code + MIN_KEYCODE; EventQueuePtr pQueue; /* Filter all repeated events from device. We'll do softrepeat in the server, but only since 1.6 */ if (value == 2) return; if ((pQueue = EvdevNextInQueue(pInfo))) { pQueue->type = EV_QUEUE_KEY; pQueue->detail.key = code; pQueue->val = value; } } void EvdevQueueButtonEvent(InputInfoPtr pInfo, int button, int value) { EventQueuePtr pQueue; if ((pQueue = EvdevNextInQueue(pInfo))) { pQueue->type = EV_QUEUE_BTN; pQueue->detail.key = button; pQueue->val = value; } } void EvdevQueueProximityEvent(InputInfoPtr pInfo, int value) { EventQueuePtr pQueue; if ((pQueue = EvdevNextInQueue(pInfo))) { pQueue->type = EV_QUEUE_PROXIMITY; pQueue->detail.key = 0; pQueue->val = value; } } void EvdevQueueTouchEvent(InputInfoPtr pInfo, unsigned int touch, ValuatorMask *mask, uint16_t evtype) { EventQueuePtr pQueue; if ((pQueue = EvdevNextInQueue(pInfo))) { pQueue->type = EV_QUEUE_TOUCH; pQueue->detail.touch = touch; valuator_mask_copy(pQueue->touchMask, mask); pQueue->val = evtype; } } /** * Post button event right here, right now. * Interface for MB emulation since these need to post immediately. */ void EvdevPostButtonEvent(InputInfoPtr pInfo, int button, enum ButtonAction act) { xf86PostButtonEvent(pInfo->dev, Relative, button, (act == BUTTON_PRESS) ? 1 : 0, 0, 0); } void EvdevQueueButtonClicks(InputInfoPtr pInfo, int button, int count) { int i; for (i = 0; i < count; i++) { EvdevQueueButtonEvent(pInfo, button, 1); EvdevQueueButtonEvent(pInfo, button, 0); } } static void EvdevSwapAbsValuators(EvdevPtr pEvdev, ValuatorMask *mask) { int i; int swapped_isset[2] = {0, 0}; int swapped_values[2]; if (!pEvdev->swap_axes) return; for(i = 0; i <= 1; i++) { if (valuator_mask_isset(mask, i)) { const struct input_absinfo *abs1 = libevdev_get_abs_info(pEvdev->dev, i); const struct input_absinfo *abs2 = libevdev_get_abs_info(pEvdev->dev, 1 - i); swapped_isset[1 - i] = 1; swapped_values[1 - i] = xf86ScaleAxis(valuator_mask_get(mask, i), abs2->maximum, abs2->minimum, abs1->maximum, abs1->minimum); } } for (i = 0; i <= 1; i++) { if (swapped_isset[i]) valuator_mask_set(mask, i, swapped_values[i]); else valuator_mask_unset(mask, i); } } static void EvdevApplyCalibration(EvdevPtr pEvdev, ValuatorMask *mask) { int i; for (i = 0; i <= 1; i++) { const struct input_absinfo *abs; int val; int calib_min; int calib_max; if (!valuator_mask_isset(mask, i)) continue; val = valuator_mask_get(mask, i); abs = libevdev_get_abs_info(pEvdev->dev, i); if (i == 0) { calib_min = pEvdev->calibration.min_x; calib_max = pEvdev->calibration.max_x; } else { calib_min = pEvdev->calibration.min_y; calib_max = pEvdev->calibration.max_y; } if (pEvdev->flags & EVDEV_CALIBRATED) val = xf86ScaleAxis(val, abs->maximum, abs->minimum, calib_max, calib_min); if ((i == 0 && pEvdev->invert_x) || (i == 1 && pEvdev->invert_y)) val = (abs->maximum - val + abs->minimum); valuator_mask_set(mask, i, val); } } /** * Take the valuators and process them accordingly. */ static void EvdevProcessValuators(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; int val; if (pEvdev->abs_vals) { if (valuator_mask_fetch(pEvdev->abs_vals, 0, &val)) valuator_mask_set(pEvdev->old_vals, 0, val); if (valuator_mask_fetch(pEvdev->abs_vals, 1, &val)) valuator_mask_set(pEvdev->old_vals, 1, val); } /* Apply transformations on relative coordinates */ if (pEvdev->rel_queued) { double deltaX = 0, deltaY = 0; if (valuator_mask_isset(pEvdev->rel_vals, REL_X)) deltaX = valuator_mask_get_double(pEvdev->rel_vals, REL_X); if (valuator_mask_isset(pEvdev->rel_vals, REL_Y)) deltaY = valuator_mask_get_double(pEvdev->rel_vals, REL_Y); if (pEvdev->swap_axes) { double tmp = deltaX; deltaX = deltaY; deltaY = tmp; } if (pEvdev->resolution > 0) { deltaX *= DEFAULT_MOUSE_DPI / pEvdev->resolution; deltaY *= DEFAULT_MOUSE_DPI / pEvdev->resolution; } if (pEvdev->invert_x) deltaX *= -1; if (pEvdev->invert_y) deltaY *= -1; if (deltaX) valuator_mask_set_double(pEvdev->rel_vals, REL_X, deltaX); else valuator_mask_unset(pEvdev->rel_vals, REL_X); if (deltaY) valuator_mask_set_double(pEvdev->rel_vals, REL_Y, deltaY); else valuator_mask_unset(pEvdev->rel_vals, REL_Y); Evdev3BEmuProcessRelMotion(pInfo, deltaX, deltaY); } /* * Some devices only generate valid abs coords when BTN_TOOL_PEN is * pressed. On wacom tablets, this means that the pen is in * proximity of the tablet. After the pen is removed, BTN_TOOL_PEN is * released, and a (0, 0) absolute event is generated. Checking * pEvdev->in_proximity here lets us ignore that event. pEvdev is * initialized to 1 so devices that don't use this scheme still * just works. */ else if (pEvdev->abs_queued && pEvdev->in_proximity) { EvdevSwapAbsValuators(pEvdev, pEvdev->abs_vals); EvdevApplyCalibration(pEvdev, pEvdev->abs_vals); Evdev3BEmuProcessAbsMotion(pInfo, pEvdev->abs_vals); } } static void EvdevProcessProximityEvent(InputInfoPtr pInfo, struct input_event *ev) { EvdevPtr pEvdev = pInfo->private; if (!pEvdev->use_proximity) return; pEvdev->prox_queued = 1; EvdevQueueProximityEvent(pInfo, ev->value); } /** * Proximity handling is rather weird because of tablet-specific issues. * Some tablets, notably Wacoms, send a 0/0 coordinate in the same EV_SYN as * the out-of-proximity notify. We need to ignore those, hence we only * actually post valuator events when we're in proximity. * * Other tablets send the x/y coordinates, then EV_SYN, then the proximity * event. For those, we need to remember x/y to post it when the proximity * comes. * * If we're not in proximity and we get valuator events, remember that, they * won't be posted though. If we move into proximity without valuators, use * the last ones we got and let the rest of the code post them. */ static int EvdevProcessProximityState(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; int prox_state = 0; int i; /* Does this device have any proximity axes? */ if (!pEvdev->prox) return 0; /* no proximity change in the queue */ if (!pEvdev->prox_queued) { if (pEvdev->abs_queued && !pEvdev->in_proximity) for (i = 0; i < valuator_mask_size(pEvdev->abs_vals); i++) if (valuator_mask_isset(pEvdev->abs_vals, i)) valuator_mask_set(pEvdev->prox, i, valuator_mask_get(pEvdev->abs_vals, i)); return 0; } for (i = 0; i < pEvdev->num_queue; i++) { if (pEvdev->queue[i].type == EV_QUEUE_PROXIMITY) { prox_state = pEvdev->queue[i].val; break; } } if ((prox_state && !pEvdev->in_proximity) || (!prox_state && pEvdev->in_proximity)) { /* We're about to go into/out of proximity but have no abs events * within the EV_SYN. Use the last coordinates we have. */ for (i = 0; i < valuator_mask_size(pEvdev->prox); i++) if (!valuator_mask_isset(pEvdev->abs_vals, i) && valuator_mask_isset(pEvdev->prox, i)) valuator_mask_set(pEvdev->abs_vals, i, valuator_mask_get(pEvdev->prox, i)); valuator_mask_zero(pEvdev->prox); pEvdev->abs_queued = valuator_mask_size(pEvdev->abs_vals); } pEvdev->in_proximity = prox_state; return 1; } /** * Take a button input event and process it accordingly. */ static void EvdevProcessButtonEvent(InputInfoPtr pInfo, struct input_event *ev) { unsigned int button; int value; EvdevPtr pEvdev = pInfo->private; button = EvdevUtilButtonEventToButtonNumber(pEvdev, ev->code); /* Get the signed value, earlier kernels had this as unsigned */ value = ev->value; /* Handle drag lock */ if (EvdevDragLockFilterEvent(pInfo, button, value)) return; if (EvdevWheelEmuFilterButton(pInfo, button, value)) return; if (EvdevMBEmuFilterEvent(pInfo, button, value)) return; if (button) EvdevQueueButtonEvent(pInfo, button, value); else EvdevQueueKbdEvent(pInfo, ev, value); } /** * Take the relative motion input event and process it accordingly. */ static void EvdevProcessRelativeMotionEvent(InputInfoPtr pInfo, struct input_event *ev) { int value; EvdevPtr pEvdev = pInfo->private; int map; /* Get the signed value, earlier kernels had this as unsigned */ value = ev->value; switch (ev->code) { default: /* Ignore EV_REL events if we never set up for them. */ if (!(pEvdev->flags & EVDEV_RELATIVE_EVENTS) && ev->code != REL_WHEEL && ev->code != REL_DIAL && ev->code != REL_HWHEEL) return; /* Handle mouse wheel emulation */ if (EvdevWheelEmuFilterMotion(pInfo, ev)) return; pEvdev->rel_queued = 1; map = pEvdev->rel_axis_map[ev->code]; if (valuator_mask_isset(pEvdev->rel_vals, map)) value += valuator_mask_get(pEvdev->rel_vals, map); valuator_mask_set(pEvdev->rel_vals, map, value); break; } } static void EvdevProcessTouch(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; int type; int slot = pEvdev->cur_slot; if (slot < 0 || !pEvdev->mt_mask) return; if (!pEvdev->slots[slot].dirty) return; switch(pEvdev->slots[slot].state) { case SLOTSTATE_EMPTY: return; case SLOTSTATE_CLOSE: type = XI_TouchEnd; pEvdev->slots[slot].state = SLOTSTATE_EMPTY; break; case SLOTSTATE_OPEN: type = XI_TouchBegin; pEvdev->slots[slot].state = SLOTSTATE_UPDATE; break; case SLOTSTATE_UPDATE: default: type = XI_TouchUpdate; break; } EvdevSwapAbsValuators(pEvdev, pEvdev->mt_mask); EvdevApplyCalibration(pEvdev, pEvdev->mt_mask); EvdevQueueTouchEvent(pInfo, pEvdev->cur_slot, pEvdev->mt_mask, type); pEvdev->slots[slot].dirty = 0; valuator_mask_zero(pEvdev->mt_mask); } static int num_slots(EvdevPtr pEvdev) { int value; if (pEvdev->mtdev) value = pEvdev->mtdev->caps.slot.maximum + 1; else value = libevdev_get_num_slots(pEvdev->dev); /* If we don't know how many slots there are, assume at least 10 */ return value > 1 ? value : 10; } static int last_mt_vals_slot(EvdevPtr pEvdev) { int value = pEvdev->cur_slot; return value < num_slots(pEvdev) ? value : -1; } static void EvdevProcessTouchEvent(InputInfoPtr pInfo, struct input_event *ev) { EvdevPtr pEvdev = pInfo->private; int map; if (!pEvdev->mtdev && !libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_SLOT)) return; if (pEvdev->fake_mt) return; if (ev->code == ABS_MT_SLOT) { EvdevProcessTouch(pInfo); if (ev->value >= num_slots(pEvdev) ) { LogMessageVerbSigSafe(X_WARNING, 0, "%s: Slot index %d out of bounds (max %d), touch events may be incorrect.\n", pInfo->name, ev->value, num_slots(pEvdev) - 1); return; } pEvdev->cur_slot = ev->value; } else { int slot_index = last_mt_vals_slot(pEvdev); if (slot_index < 0) { LogMessageVerbSigSafe(X_WARNING, 0, "%s: Invalid slot index %d, touch events may be incorrect.\n", pInfo->name, slot_index); return; } pEvdev->slots[slot_index].dirty = 1; if (ev->code == ABS_MT_TRACKING_ID) { if (ev->value >= 0) { pEvdev->slots[slot_index].state = SLOTSTATE_OPEN; valuator_mask_copy(pEvdev->mt_mask, pEvdev->last_mt_vals[slot_index]); } else if (pEvdev->slots[slot_index].state != SLOTSTATE_EMPTY) pEvdev->slots[slot_index].state = SLOTSTATE_CLOSE; } else { map = pEvdev->abs_axis_map[ev->code]; valuator_mask_set(pEvdev->mt_mask, map, ev->value); valuator_mask_set(pEvdev->last_mt_vals[slot_index], map, ev->value); } } } /** * Take the absolute motion input event and process it accordingly. */ static void EvdevProcessAbsoluteMotionEvent(InputInfoPtr pInfo, struct input_event *ev) { int value; EvdevPtr pEvdev = pInfo->private; int map; /* Get the signed value, earlier kernels had this as unsigned */ value = ev->value; /* Ignore EV_ABS events if we never set up for them. */ if (!(pEvdev->flags & EVDEV_ABSOLUTE_EVENTS)) return; if (ev->code > ABS_MAX) return; /* Always store the current abs valuator, we need it to update old_vals * which is required by wheel emulation */ map = pEvdev->abs_axis_map[ev->code]; if (map < 2) valuator_mask_set(pEvdev->abs_vals, map, value); if (EvdevWheelEmuFilterMotion(pInfo, ev)) return; if (ev->code >= ABS_MT_SLOT) { EvdevProcessTouchEvent(pInfo, ev); pEvdev->abs_queued = 1; } else if (!pEvdev->mt_mask) { map = pEvdev->abs_axis_map[ev->code]; /* check if the event must be translated into relative */ if (map < 2 && (pEvdev->flags & EVDEV_RELATIVE_MODE)) { int oldval; if (valuator_mask_fetch(pEvdev->old_vals, map, &oldval)) { valuator_mask_set(pEvdev->rel_vals, map, value - oldval); pEvdev->rel_queued = 1; } } else { valuator_mask_set(pEvdev->abs_vals, map, value); pEvdev->abs_queued = 1; } } } /** * Take the key press/release input event and process it accordingly. */ static void EvdevProcessKeyEvent(InputInfoPtr pInfo, struct input_event *ev) { int value, i; EvdevPtr pEvdev = pInfo->private; /* Get the signed value, earlier kernels had this as unsigned */ value = ev->value; /* don't repeat mouse buttons */ if (ev->code >= BTN_MOUSE && ev->code < KEY_OK) if (value == 2) return; for (i = 0; i < ArrayLength(proximity_bits); i++) { if (ev->code == proximity_bits[i]) { EvdevProcessProximityEvent(pInfo, ev); return; } } switch (ev->code) { case BTN_TOUCH: /* For devices that have but don't use proximity, use * BTN_TOUCH as the proximity notifier */ if (!pEvdev->use_proximity) pEvdev->in_proximity = value ? ev->code : 0; /* When !pEvdev->use_proximity, we don't report * proximity events to the X server. However, we * still want to keep track if one is in proximity or * not. This is especially important for touchpad * who report proximity information to the computer * (but it is not sent to X) and who might send unreliable * position information when not in_proximity. */ if (!(pEvdev->flags & (EVDEV_TOUCHSCREEN | EVDEV_TABLET)) || pEvdev->mt_mask) break; /* Treat BTN_TOUCH from devices that only have BTN_TOUCH as * BTN_LEFT. */ ev->code = BTN_LEFT; /* Intentional fallthrough! */ default: EvdevProcessButtonEvent(pInfo, ev); break; } } /** * Post the relative motion events. */ void EvdevPostRelativeMotionEvents(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; if (pEvdev->rel_queued && pEvdev->in_proximity) { xf86PostMotionEventM(pInfo->dev, Relative, pEvdev->rel_vals); } } /** * Post the absolute motion events. */ void EvdevPostAbsoluteMotionEvents(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; /* * Some devices only generate valid abs coords when BTN_TOOL_PEN is * pressed. On wacom tablets, this means that the pen is in * proximity of the tablet. After the pen is removed, BTN_TOOL_PEN is * released, and a (0, 0) absolute event is generated. Checking * pEvdev->in_proximity here lets us ignore that event. * pEvdev->in_proximity is initialized to 1 so devices that don't use * this scheme still just work. */ if (pEvdev->abs_queued && pEvdev->in_proximity) { xf86PostMotionEventM(pInfo->dev, Absolute, pEvdev->abs_vals); } } static void EvdevPostProximityEvents(InputInfoPtr pInfo, int which) { int i; EvdevPtr pEvdev = pInfo->private; for (i = 0; pEvdev->prox_queued && i < pEvdev->num_queue; i++) { switch (pEvdev->queue[i].type) { case EV_QUEUE_KEY: case EV_QUEUE_BTN: case EV_QUEUE_TOUCH: break; case EV_QUEUE_PROXIMITY: if (pEvdev->queue[i].val == which) xf86PostProximityEvent(pInfo->dev, which, 0, 0); break; } } } /** * Post the queued key/button events. */ static void EvdevPostQueuedEvents(InputInfoPtr pInfo) { int i; EvdevPtr pEvdev = pInfo->private; for (i = 0; i < pEvdev->num_queue; i++) { switch (pEvdev->queue[i].type) { case EV_QUEUE_KEY: xf86PostKeyboardEvent(pInfo->dev, pEvdev->queue[i].detail.key, pEvdev->queue[i].val); break; case EV_QUEUE_BTN: if (Evdev3BEmuFilterEvent(pInfo, pEvdev->queue[i].detail.key, pEvdev->queue[i].val)) break; if (pEvdev->abs_queued && pEvdev->in_proximity) { xf86PostButtonEvent(pInfo->dev, Absolute, pEvdev->queue[i].detail.key, pEvdev->queue[i].val, 0, 0); } else xf86PostButtonEvent(pInfo->dev, Relative, pEvdev->queue[i].detail.key, pEvdev->queue[i].val, 0, 0); break; case EV_QUEUE_PROXIMITY: break; case EV_QUEUE_TOUCH: xf86PostTouchEvent(pInfo->dev, pEvdev->queue[i].detail.touch, pEvdev->queue[i].val, 0, pEvdev->queue[i].touchMask); break; } } } /** * Take the synchronization input event and process it accordingly; the motion * notify events are sent first, then any button/key press/release events. */ static void EvdevProcessSyncEvent(InputInfoPtr pInfo, struct input_event *ev) { int i; EvdevPtr pEvdev = pInfo->private; EvdevProcessProximityState(pInfo); EvdevProcessValuators(pInfo); EvdevProcessTouch(pInfo); EvdevPostProximityEvents(pInfo, TRUE); EvdevPostRelativeMotionEvents(pInfo); EvdevPostAbsoluteMotionEvents(pInfo); EvdevPostQueuedEvents(pInfo); EvdevPostProximityEvents(pInfo, FALSE); for (i = 0; i < ArrayLength(pEvdev->queue); i++) { EventQueuePtr queue = &pEvdev->queue[i]; queue->detail.key = 0; queue->type = 0; queue->val = 0; /* don't reset the touchMask */ } if (pEvdev->rel_vals) valuator_mask_zero(pEvdev->rel_vals); if (pEvdev->abs_vals) valuator_mask_zero(pEvdev->abs_vals); pEvdev->num_queue = 0; pEvdev->abs_queued = 0; pEvdev->rel_queued = 0; pEvdev->prox_queued = 0; } /** * Process the events from the device; nothing is actually posted to the server * until an EV_SYN event is received. */ static void EvdevProcessEvent(InputInfoPtr pInfo, struct input_event *ev) { switch (ev->type) { case EV_REL: EvdevProcessRelativeMotionEvent(pInfo, ev); break; case EV_ABS: EvdevProcessAbsoluteMotionEvent(pInfo, ev); break; case EV_KEY: EvdevProcessKeyEvent(pInfo, ev); break; case EV_SYN: EvdevProcessSyncEvent(pInfo, ev); break; } } static void EvdevFreeMasks(EvdevPtr pEvdev) { int i; free(pEvdev->slots); pEvdev->slots = NULL; valuator_mask_free(&pEvdev->abs_vals); valuator_mask_free(&pEvdev->rel_vals); valuator_mask_free(&pEvdev->old_vals); valuator_mask_free(&pEvdev->prox); valuator_mask_free(&pEvdev->mt_mask); if (pEvdev->last_mt_vals) { for (i = 0; i < libevdev_get_num_slots(pEvdev->dev); i++) valuator_mask_free(&pEvdev->last_mt_vals[i]); free(pEvdev->last_mt_vals); pEvdev->last_mt_vals = NULL; } for (i = 0; i < EVDEV_MAXQUEUE; i++) valuator_mask_free(&pEvdev->queue[i].touchMask); } static void EvdevHandleMTDevEvent(InputInfoPtr pInfo, struct input_event *ev) { EvdevPtr pEvdev = pInfo->private; mtdev_put_event(pEvdev->mtdev, ev); if (libevdev_event_is_code(ev, EV_SYN, SYN_REPORT)) { while (!mtdev_empty(pEvdev->mtdev)) { struct input_event e; mtdev_get_event(pEvdev->mtdev, &e); EvdevProcessEvent(pInfo, &e); } } } static void EvdevReadInput(InputInfoPtr pInfo) { int rc = 0; EvdevPtr pEvdev = pInfo->private; struct input_event ev; do { rc = libevdev_next_event(pEvdev->dev, LIBEVDEV_READ_FLAG_NORMAL, &ev); if (rc < 0) { if (rc == -ENODEV) /* May happen after resume */ xf86RemoveEnabledDevice(pInfo); else if (rc != -EAGAIN) LogMessageVerbSigSafe(X_ERROR, 0, "%s: Read error: %s\n", pInfo->name, strerror(-rc)); break; } else if (rc == LIBEVDEV_READ_STATUS_SUCCESS) { if (pEvdev->mtdev) EvdevHandleMTDevEvent(pInfo, &ev); else EvdevProcessEvent(pInfo, &ev); } else { /* SYN_DROPPED */ rc = libevdev_next_event(pEvdev->dev, LIBEVDEV_READ_FLAG_SYNC, &ev); while (rc == LIBEVDEV_READ_STATUS_SYNC) { if (pEvdev->mtdev) EvdevHandleMTDevEvent(pInfo, &ev); else EvdevProcessEvent(pInfo, &ev); rc = libevdev_next_event(pEvdev->dev, LIBEVDEV_READ_FLAG_SYNC, &ev); } } } while (rc == LIBEVDEV_READ_STATUS_SUCCESS); } static void EvdevPtrCtrlProc(DeviceIntPtr device, PtrCtrl *ctrl) { /* Nothing to do, dix handles all settings */ } static void EvdevKbdCtrl(DeviceIntPtr device, KeybdCtrl *ctrl) { static struct { int xbit, code; } bits[] = { { CAPSFLAG, LED_CAPSL }, { NUMFLAG, LED_NUML }, { SCROLLFLAG, LED_SCROLLL }, { MODEFLAG, LED_KANA }, { COMPOSEFLAG, LED_COMPOSE } }; InputInfoPtr pInfo; struct input_event ev[ArrayLength(bits) + 1]; int i; memset(ev, 0, sizeof(ev)); pInfo = device->public.devicePrivate; for (i = 0; i < ArrayLength(bits); i++) { ev[i].type = EV_LED; ev[i].code = bits[i].code; ev[i].value = (ctrl->leds & bits[i].xbit) > 0; } ev[i].type = EV_SYN; ev[i].code = SYN_REPORT; ev[i].value = 0; write(pInfo->fd, ev, sizeof ev); } static int EvdevAddKeyClass(DeviceIntPtr device) { int rc = Success; XkbRMLVOSet rmlvo = {0}, defaults; InputInfoPtr pInfo; pInfo = device->public.devicePrivate; XkbGetRulesDflts(&defaults); /* sorry, no rules change allowed for you */ xf86ReplaceStrOption(pInfo->options, "xkb_rules", "evdev"); rmlvo.rules = xf86SetStrOption(pInfo->options, "xkb_rules", NULL); rmlvo.model = xf86SetStrOption(pInfo->options, "xkb_model", defaults.model); rmlvo.layout = xf86SetStrOption(pInfo->options, "xkb_layout", defaults.layout); rmlvo.variant = xf86SetStrOption(pInfo->options, "xkb_variant", defaults.variant); rmlvo.options = xf86SetStrOption(pInfo->options, "xkb_options", defaults.options); if (!InitKeyboardDeviceStruct(device, &rmlvo, NULL, EvdevKbdCtrl)) rc = !Success; XkbFreeRMLVOSet(&rmlvo, FALSE); XkbFreeRMLVOSet(&defaults, FALSE); return rc; } /* MT axes are counted twice - once as ABS_X (which the kernel keeps for * backwards compatibility), once as ABS_MT_POSITION_X. So we need to keep a * mapping of those axes to make sure we only count them once */ struct mt_axis_mappings { int mt_code; int code; Bool needs_mapping; /* TRUE if both code and mt_code are present */ int mapping; /* Logical mapping of 'code' axis */ }; static struct mt_axis_mappings mt_axis_mappings[] = { {ABS_MT_POSITION_X, ABS_X}, {ABS_MT_POSITION_Y, ABS_Y}, {ABS_MT_PRESSURE, ABS_PRESSURE}, {ABS_MT_DISTANCE, ABS_DISTANCE}, }; /** * return TRUE if the axis is not one we should count as true axis */ static int is_blacklisted_axis(int axis) { switch(axis) { case ABS_MT_SLOT: case ABS_MT_TRACKING_ID: return TRUE; default: return FALSE; } } static int EvdevAddFakeSingleTouchAxes(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; int num_axes = 0; int i; if (pEvdev->fake_mt) return 0; /* Android drivers often have ABS_MT_POSITION_X but not ABS_X. Loop over the MT->legacy axis table and add fake axes. */ for (i = 0; i < ArrayLength(mt_axis_mappings); i++) { int mt_code = mt_axis_mappings[i].mt_code; int code = mt_axis_mappings[i].code; const struct input_absinfo* abs; if (!libevdev_has_event_code(pEvdev->dev, EV_ABS, mt_code) || libevdev_has_event_code(pEvdev->dev, EV_ABS, code)) continue; abs = libevdev_get_abs_info(pEvdev->dev, mt_code); if (libevdev_enable_event_code(pEvdev->dev, EV_ABS, code, abs)) { xf86IDrvMsg(pInfo, X_ERROR, "Failed to fake axis %s.\n", libevdev_event_code_get_name(EV_ABS, code)); return -1; } xf86IDrvMsg(pInfo, X_INFO, "Faking axis %s.\n", libevdev_event_code_get_name(EV_ABS, code)); num_axes++; } return num_axes; } static void EvdevCountMTAxes(EvdevPtr pEvdev, int *num_mt_axes_total, int *num_mt_axes, int *num_axes) { int axis; if (pEvdev->fake_mt) return; /* Absolute multitouch axes: adjust mapping and axes counts. */ for (axis = ABS_MT_SLOT; axis < ABS_MAX; axis++) { int j; Bool skip = FALSE; if (!libevdev_has_event_code(pEvdev->dev, EV_ABS, axis)) continue; /* Setup mapping if axis is in MT->legacy axis table. */ for (j = 0; j < ArrayLength(mt_axis_mappings); j++) { if (mt_axis_mappings[j].mt_code == axis && libevdev_has_event_code(pEvdev->dev, EV_ABS, mt_axis_mappings[j].code)) { mt_axis_mappings[j].needs_mapping = TRUE; skip = TRUE; } } if (!is_blacklisted_axis(axis)) { (*num_mt_axes_total)++; if (!skip) (*num_mt_axes)++; } (*num_axes)--; } } static int EvdevAddAbsValuatorClass(DeviceIntPtr device, int num_scroll_axes) { InputInfoPtr pInfo; EvdevPtr pEvdev; int axis, i = 0; int num_axes = 0; /* number of non-MT axes */ int num_mt_axes = 0, /* number of MT-only axes */ num_mt_axes_total = 0; /* total number of MT axes, including double-counted ones, excluding blacklisted */ int num_faked_axes; Atom *atoms; int mapping = 0; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; if (!libevdev_has_event_type(pEvdev->dev, EV_ABS)) goto out; /* Find number of absolute axis, including MT ones, will decrease later. */ for (i = 0; i < ABS_MAX; i++) if (libevdev_has_event_code(pEvdev->dev, EV_ABS, i)) num_axes++; if (num_axes < 1) goto out; num_faked_axes = EvdevAddFakeSingleTouchAxes(pInfo); if (num_faked_axes < 0) goto out; num_axes += num_faked_axes; EvdevCountMTAxes(pEvdev, &num_mt_axes_total, &num_mt_axes, &num_axes); /* Panic if, after faking ABS_X etc, we still only have mt-axes. */ if (num_axes == 0 && num_mt_axes > 0) { xf86IDrvMsg(pInfo, X_ERROR, "found only multitouch-axes. That shouldn't happen.\n"); goto out; } num_axes += num_scroll_axes; if (num_axes + num_mt_axes > MAX_VALUATORS) { xf86IDrvMsg(pInfo, X_WARNING, "found %d axes, limiting to %d.\n", num_axes, MAX_VALUATORS); num_axes = MAX_VALUATORS; } if (num_axes < 1 && num_mt_axes_total < 1) { xf86Msg(X_WARNING, "%s: no absolute or touch axes found.\n", device->name); return !Success; } pEvdev->num_vals = num_axes; if (num_axes > 0) { pEvdev->abs_vals = valuator_mask_new(num_axes); pEvdev->old_vals = valuator_mask_new(num_axes); pEvdev->rel_vals = valuator_mask_new(num_axes); /* One needs rel_vals for an absolute device because * a) their might be some (relative) scroll axes * b) the device could be set in EVDEV_RELATIVE_MODE */ if (!pEvdev->abs_vals || !pEvdev->rel_vals || !pEvdev->old_vals) { xf86IDrvMsg(pInfo, X_ERROR, "failed to allocate valuator masks.\n"); goto out; } } if (num_mt_axes_total > 0) { int nslots = num_slots(pEvdev); pEvdev->num_mt_vals = num_mt_axes_total; pEvdev->mt_mask = valuator_mask_new(num_mt_axes_total); if (!pEvdev->mt_mask) { xf86Msg(X_ERROR, "%s: failed to allocate MT valuator mask.\n", device->name); goto out; } pEvdev->slots = calloc(nslots, sizeof(*pEvdev->slots)); if (!pEvdev->slots) { xf86Msg(X_ERROR, "%s: failed to allocate slot state array.\n", device->name); goto out; } for (i = 0; i < nslots; i++) { pEvdev->slots[i].state = SLOTSTATE_EMPTY; pEvdev->slots[i].dirty = 0; } pEvdev->last_mt_vals = calloc(nslots, sizeof(ValuatorMask *)); if (!pEvdev->last_mt_vals) { xf86IDrvMsg(pInfo, X_ERROR, "%s: failed to allocate MT last values mask array.\n", device->name); goto out; } for (i = 0; i < nslots; i++) { pEvdev->last_mt_vals[i] = valuator_mask_new(num_mt_axes_total); if (!pEvdev->last_mt_vals[i]) { xf86IDrvMsg(pInfo, X_ERROR, "%s: failed to allocate MT last values mask.\n", device->name); goto out; } } for (i = 0; i < EVDEV_MAXQUEUE; i++) { pEvdev->queue[i].touchMask = valuator_mask_new(num_mt_axes_total); if (!pEvdev->queue[i].touchMask) { xf86Msg(X_ERROR, "%s: failed to allocate MT valuator masks for " "evdev event queue.\n", device->name); goto out; } } } atoms = malloc((pEvdev->num_vals + num_mt_axes) * sizeof(Atom)); i = 2; for (axis = ABS_X; i < MAX_VALUATORS && axis <= ABS_MAX; axis++) { int j; pEvdev->abs_axis_map[axis] = -1; if (!libevdev_has_event_code(pEvdev->dev, EV_ABS, axis) || is_blacklisted_axis(axis)) continue; if (axis == ABS_X) mapping = 0; else if (axis == ABS_Y) mapping = 1; else mapping = i; for (j = 0; !pEvdev->fake_mt && j < ArrayLength(mt_axis_mappings); j++) { if (mt_axis_mappings[j].code == axis) mt_axis_mappings[j].mapping = mapping; else if (mt_axis_mappings[j].mt_code == axis && mt_axis_mappings[j].needs_mapping) mapping = mt_axis_mappings[j].mapping; } pEvdev->abs_axis_map[axis] = mapping; if (mapping == i) i++; } if (num_scroll_axes > 0) { mapping++; /* continue from abs axis mapping */ if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_HWHEEL)) pEvdev->rel_axis_map[REL_HWHEEL] = mapping++; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_DIAL)) pEvdev->rel_axis_map[REL_DIAL] = mapping++; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_WHEEL)) pEvdev->rel_axis_map[REL_WHEEL] = mapping++; } EvdevInitAxesLabels(pEvdev, Absolute, pEvdev->num_vals + num_mt_axes, atoms); if (!InitValuatorClassDeviceStruct(device, num_axes + num_mt_axes, atoms, GetMotionHistorySize(), Absolute)) { xf86IDrvMsg(pInfo, X_ERROR, "failed to initialize valuator class device.\n"); goto out; } if (num_mt_axes_total > 0) { int num_touches = 0; int mode = pEvdev->flags & EVDEV_TOUCHPAD ? XIDependentTouch : XIDirectTouch; num_touches = num_slots(pEvdev); if (!InitTouchClassDeviceStruct(device, num_touches, mode, num_mt_axes_total)) { xf86Msg(X_ERROR, "%s: failed to initialize touch class device.\n", device->name); goto out; } for (i = 0; i < num_touches; i++) { for (axis = ABS_MT_TOUCH_MAJOR; axis < ABS_MAX; axis++) { if (pEvdev->abs_axis_map[axis] >= 0) { int val = pEvdev->mtdev ? 0 : libevdev_get_current_slot(pEvdev->dev); /* XXX: read initial values from mtdev when it adds support * for doing so. */ valuator_mask_set(pEvdev->last_mt_vals[i], pEvdev->abs_axis_map[axis], val); } } } } for (axis = ABS_X; axis < ABS_MT_SLOT; axis++) { const struct input_absinfo *abs; int axnum = pEvdev->abs_axis_map[axis]; int resolution = 0; if (axnum == -1) continue; abs = libevdev_get_abs_info(pEvdev->dev, axis); #if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 30) /* Kernel provides units/mm, X wants units/m */ resolution = abs->resolution * 1000; #endif xf86InitValuatorAxisStruct(device, axnum, atoms[axnum], abs->minimum, abs->maximum, resolution, 0, resolution, Absolute); xf86InitValuatorDefaults(device, axnum); } for (axis = ABS_MT_TOUCH_MAJOR; axis <= ABS_MAX; axis++) { const struct input_absinfo *abs; int axnum = pEvdev->abs_axis_map[axis]; int resolution = 0; int j; BOOL skip = FALSE; if (axnum < 0) continue; abs = libevdev_get_abs_info(pEvdev->dev, axis); for (j = 0; j < ArrayLength(mt_axis_mappings); j++) if (mt_axis_mappings[j].mt_code == axis && mt_axis_mappings[j].needs_mapping) { skip = TRUE; break; } /* MT axis is mapped, don't set up twice */ if (skip) continue; resolution = abs->resolution * 1000; xf86InitValuatorAxisStruct(device, axnum, atoms[axnum], abs->minimum, abs->maximum, resolution, 0, resolution, Absolute); } if (num_scroll_axes) { int idx; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_WHEEL)) { idx = REL_WHEEL; xf86InitValuatorAxisStruct(device, pEvdev->rel_axis_map[idx], atoms[pEvdev->rel_axis_map[idx]], NO_AXIS_LIMITS, NO_AXIS_LIMITS, 0, 0, 0, Relative); SetScrollValuator(device, pEvdev->rel_axis_map[idx], SCROLL_TYPE_VERTICAL, -pEvdev->smoothScroll.vert_delta, SCROLL_FLAG_PREFERRED); } if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_HWHEEL)) { idx = REL_HWHEEL; xf86InitValuatorAxisStruct(device, pEvdev->rel_axis_map[idx], atoms[pEvdev->rel_axis_map[idx]], NO_AXIS_LIMITS, NO_AXIS_LIMITS, 0, 0, 0, Relative); SetScrollValuator(device, pEvdev->rel_axis_map[idx], SCROLL_TYPE_HORIZONTAL, pEvdev->smoothScroll.horiz_delta, SCROLL_FLAG_NONE); } if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_DIAL)) { idx = REL_DIAL; xf86InitValuatorAxisStruct(device, pEvdev->rel_axis_map[idx], atoms[pEvdev->rel_axis_map[idx]], NO_AXIS_LIMITS, NO_AXIS_LIMITS, 0, 0, 0, Relative); SetScrollValuator(device, pEvdev->rel_axis_map[idx], SCROLL_TYPE_HORIZONTAL, pEvdev->smoothScroll.dial_delta, SCROLL_FLAG_NONE); } } free(atoms); for (i = 0; i < ArrayLength(proximity_bits); i++) { if (!pEvdev->use_proximity) break; if (libevdev_has_event_code(pEvdev->dev, EV_KEY, proximity_bits[i])) { InitProximityClassDeviceStruct(device); pEvdev->prox = valuator_mask_new(num_axes); if (!pEvdev->prox) { xf86IDrvMsg(pInfo, X_ERROR, "failed to allocate proximity valuator " "mask.\n"); goto out; } break; } } if (!InitPtrFeedbackClassDeviceStruct(device, EvdevPtrCtrlProc)) { xf86IDrvMsg(pInfo, X_ERROR, "failed to initialize pointer feedback class device.\n"); goto out; } if (pEvdev->flags & EVDEV_TOUCHPAD) pEvdev->flags |= EVDEV_RELATIVE_MODE; else pEvdev->flags &= ~EVDEV_RELATIVE_MODE; if (xf86FindOption(pInfo->options, "Mode")) { char *mode; mode = xf86SetStrOption(pInfo->options, "Mode", NULL); if (!strcasecmp("absolute", mode)) pEvdev->flags &= ~EVDEV_RELATIVE_MODE; else if (!strcasecmp("relative", mode)) pEvdev->flags |= EVDEV_RELATIVE_MODE; else xf86IDrvMsg(pInfo, X_INFO, "unknown mode, use default\n"); free(mode); } return Success; out: EvdevFreeMasks(pEvdev); return !Success; } static int EvdevSetScrollValuators(DeviceIntPtr device) { InputInfoPtr pInfo; EvdevPtr pEvdev; int axnum; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; axnum = pEvdev->rel_axis_map[REL_WHEEL]; if (axnum != -1) { SetScrollValuator(device, axnum, SCROLL_TYPE_VERTICAL, -pEvdev->smoothScroll.vert_delta, SCROLL_FLAG_PREFERRED); } axnum = pEvdev->rel_axis_map[REL_DIAL]; if (axnum != -1) { SetScrollValuator(device, axnum, SCROLL_TYPE_HORIZONTAL, pEvdev->smoothScroll.dial_delta, SCROLL_FLAG_NONE); } axnum = pEvdev->rel_axis_map[REL_HWHEEL]; if (axnum != -1) { SetScrollValuator(device, axnum, SCROLL_TYPE_HORIZONTAL, pEvdev->smoothScroll.horiz_delta, SCROLL_FLAG_NONE); } return Success; } static int EvdevAddRelValuatorClass(DeviceIntPtr device, int num_scroll_axes) { InputInfoPtr pInfo; EvdevPtr pEvdev; int num_axes = 0, axis, map, i = 0; Atom *atoms; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; if (!libevdev_has_event_type(pEvdev->dev, EV_REL)) goto out; for (i = 0; i < REL_MAX; i++) { if (i == REL_WHEEL || i == REL_HWHEEL || i == REL_DIAL) continue; if (libevdev_has_event_code(pEvdev->dev, EV_REL, i)) num_axes++; } /* If we have only relative scroll axes, then we punt axis init to EvdevInitAbsValuators if possible */ if (num_axes < 1 && (num_scroll_axes == 0 || pEvdev->flags & EVDEV_ABSOLUTE_EVENTS)) goto out; num_axes += num_scroll_axes; if (num_axes > MAX_VALUATORS) { xf86IDrvMsg(pInfo, X_WARNING, "found %d axes, limiting to %d.\n", num_axes, MAX_VALUATORS); num_axes = MAX_VALUATORS; } pEvdev->num_vals = num_axes; if (num_axes > 0) { pEvdev->rel_vals = valuator_mask_new(num_axes); if (!pEvdev->rel_vals) goto out; } atoms = malloc(pEvdev->num_vals * sizeof(Atom)); for (axis = REL_X, map = 0; map < MAX_VALUATORS && axis <= REL_MAX; axis++) { pEvdev->rel_axis_map[axis] = -1; if (!libevdev_has_event_code(pEvdev->dev, EV_REL, axis)) continue; pEvdev->rel_axis_map[axis] = map; map++; } EvdevInitAxesLabels(pEvdev, Relative, pEvdev->num_vals, atoms); if (!InitValuatorClassDeviceStruct(device, num_axes, atoms, GetMotionHistorySize(), Relative)) { xf86IDrvMsg(pInfo, X_ERROR, "failed to initialize valuator class device.\n"); goto out; } if (!InitPtrFeedbackClassDeviceStruct(device, EvdevPtrCtrlProc)) { xf86IDrvMsg(pInfo, X_ERROR, "failed to initialize pointer feedback class " "device.\n"); goto out; } for (axis = REL_X; axis <= REL_MAX; axis++) { int axnum = pEvdev->rel_axis_map[axis]; if (axnum == -1) continue; xf86InitValuatorAxisStruct(device, axnum, atoms[axnum], -1, -1, 1, 0, 1, Relative); xf86InitValuatorDefaults(device, axnum); } EvdevSetScrollValuators(device); free(atoms); return Success; out: valuator_mask_free(&pEvdev->rel_vals); return !Success; } static int EvdevAddButtonClass(DeviceIntPtr device) { InputInfoPtr pInfo; EvdevPtr pEvdev; Atom *labels; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; labels = malloc(pEvdev->num_buttons * sizeof(Atom)); EvdevInitButtonLabels(pEvdev, pEvdev->num_buttons, labels); if (!InitButtonClassDeviceStruct(device, pEvdev->num_buttons, labels, pEvdev->btnmap)) return !Success; free(labels); return Success; } /** * Init the button mapping for the device. By default, this is a 1:1 mapping, * i.e. Button 1 maps to Button 1, Button 2 to 2, etc. * * If a mapping has been specified, the mapping is the default, with the * user-defined ones overwriting the defaults. * i.e. a user-defined mapping of "3 2 1" results in a mapping of 3 2 1 4 5 6 ... * * Invalid button mappings revert to the default. * * Note that index 0 is unused, button 0 does not exist. * This mapping is initialised for all devices, but only applied if the device * has buttons (in EvdevAddButtonClass). */ static void EvdevInitButtonMapping(InputInfoPtr pInfo) { int i, nbuttons = 1; char *mapping = NULL; EvdevPtr pEvdev = pInfo->private; /* Check for user-defined button mapping */ if ((mapping = xf86CheckStrOption(pInfo->options, "ButtonMapping", NULL))) { char *map, *s = NULL; int btn = 0; xf86IDrvMsg(pInfo, X_CONFIG, "ButtonMapping '%s'\n", mapping); map = mapping; do { btn = strtol(map, &s, 10); if (s == map || btn < 0 || btn > EVDEV_MAXBUTTONS) { xf86IDrvMsg(pInfo, X_ERROR, "... Invalid button mapping. Using defaults\n"); nbuttons = 1; /* ensure defaults start at 1 */ break; } pEvdev->btnmap[nbuttons++] = btn; map = s; } while (s && *s != '\0' && nbuttons < EVDEV_MAXBUTTONS); free(mapping); } for (i = nbuttons; i < ArrayLength(pEvdev->btnmap); i++) pEvdev->btnmap[i] = i; } static int EvdevCountScrollAxes(EvdevPtr pEvdev) { int num_scroll_axes = 0; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_WHEEL)) num_scroll_axes++; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_HWHEEL)) num_scroll_axes++; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_DIAL)) num_scroll_axes++; return num_scroll_axes; } static void EvdevInitAnyValuators(DeviceIntPtr device, EvdevPtr pEvdev) { InputInfoPtr pInfo = device->public.devicePrivate; int num_scroll_axes = EvdevCountScrollAxes(pEvdev); if (pEvdev->flags & EVDEV_RELATIVE_EVENTS && EvdevAddRelValuatorClass(device, num_scroll_axes) == Success) xf86IDrvMsg(pInfo, X_INFO, "initialized for relative axes.\n"); /* FIXME: EvdevAddAbsValuatorClass overwrites the valuators initialized in EvdevAddRelValuatorClass and leaks the latter's memory */ if (pEvdev->flags & EVDEV_ABSOLUTE_EVENTS && EvdevAddAbsValuatorClass(device, num_scroll_axes) == Success) xf86IDrvMsg(pInfo, X_INFO, "initialized for absolute axes.\n"); } static void EvdevInitAbsValuators(DeviceIntPtr device, EvdevPtr pEvdev) { InputInfoPtr pInfo = device->public.devicePrivate; int num_scroll_axes = EvdevCountScrollAxes(pEvdev); if (EvdevAddAbsValuatorClass(device, num_scroll_axes) == Success) { xf86IDrvMsg(pInfo, X_INFO,"initialized for absolute axes.\n"); } else { xf86IDrvMsg(pInfo, X_ERROR,"failed to initialize for absolute axes.\n"); pEvdev->flags &= ~EVDEV_ABSOLUTE_EVENTS; } } static void EvdevInitRelValuators(DeviceIntPtr device, EvdevPtr pEvdev) { InputInfoPtr pInfo = device->public.devicePrivate; int has_abs_axes = pEvdev->flags & EVDEV_ABSOLUTE_EVENTS; int num_scroll_axes = EvdevCountScrollAxes(pEvdev); if (EvdevAddRelValuatorClass(device, num_scroll_axes) == Success) { xf86IDrvMsg(pInfo, X_INFO,"initialized for relative axes.\n"); if (has_abs_axes) { xf86IDrvMsg(pInfo, X_WARNING,"ignoring absolute axes.\n"); pEvdev->flags &= ~EVDEV_ABSOLUTE_EVENTS; } } else { xf86IDrvMsg(pInfo, X_ERROR,"failed to initialize for relative axes.\n"); pEvdev->flags &= ~EVDEV_RELATIVE_EVENTS; if (has_abs_axes) EvdevInitAbsValuators(device, pEvdev); } } static void EvdevInitTouchDevice(DeviceIntPtr device, EvdevPtr pEvdev) { InputInfoPtr pInfo = device->public.devicePrivate; if (pEvdev->flags & EVDEV_RELATIVE_EVENTS) { xf86IDrvMsg(pInfo, X_WARNING, "touchpads, tablets and touchscreens " "ignore relative axes.\n"); pEvdev->flags &= ~EVDEV_RELATIVE_EVENTS; } EvdevInitAbsValuators(device, pEvdev); } static int EvdevInit(DeviceIntPtr device) { InputInfoPtr pInfo; EvdevPtr pEvdev; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; if (pEvdev->flags & EVDEV_KEYBOARD_EVENTS) EvdevAddKeyClass(device); if (pEvdev->flags & EVDEV_BUTTON_EVENTS) EvdevAddButtonClass(device); /* We don't allow relative and absolute axes on the same device. The * reason is that some devices (MS Optical Desktop 2000) register both * rel and abs axes for x/y. * * The abs axes register min/max; this min/max then also applies to the * relative device (the mouse) and caps it at 0..255 for both axes. * So, unless you have a small screen, you won't be enjoying it much; * consequently, absolute axes are generally ignored. * * However, currenly only a device with absolute axes can be registered * as a touch{pad,screen}. Thus, given such a device, absolute axes are * used and relative axes are ignored. */ if ((pEvdev->flags & (EVDEV_UNIGNORE_RELATIVE|EVDEV_UNIGNORE_ABSOLUTE)) == EVDEV_UNIGNORE_RELATIVE) EvdevInitRelValuators(device, pEvdev); else if (pEvdev->flags & EVDEV_UNIGNORE_ABSOLUTE) EvdevInitAnyValuators(device, pEvdev); else if (pEvdev->flags & (EVDEV_TOUCHPAD | EVDEV_TOUCHSCREEN | EVDEV_TABLET)) EvdevInitTouchDevice(device, pEvdev); else if (pEvdev->flags & EVDEV_RELATIVE_EVENTS) EvdevInitRelValuators(device, pEvdev); else if (pEvdev->flags & EVDEV_ABSOLUTE_EVENTS) EvdevInitAbsValuators(device, pEvdev); /* We drop the return value, the only time we ever want the handlers to * unregister is when the device dies. In which case we don't have to * unregister anyway */ EvdevInitProperty(device); XIRegisterPropertyHandler(device, EvdevSetProperty, NULL, NULL); EvdevMBEmuInitProperty(device); Evdev3BEmuInitProperty(device); EvdevWheelEmuInitProperty(device); EvdevDragLockInitProperty(device); EvdevAppleInitProperty(device); return Success; } /** * Init all extras (wheel emulation, etc.) and grab the device. */ static int EvdevOn(DeviceIntPtr device) { InputInfoPtr pInfo; EvdevPtr pEvdev; int rc = Success; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; /* after PreInit fd is still open */ rc = EvdevOpenDevice(pInfo); if (rc != Success) return rc; EvdevGrabDevice(pInfo, 1, 0); xf86FlushInput(pInfo->fd); xf86AddEnabledDevice(pInfo); EvdevMBEmuOn(pInfo); Evdev3BEmuOn(pInfo); pEvdev->flags |= EVDEV_INITIALIZED; device->public.on = TRUE; return Success; } static int EvdevProc(DeviceIntPtr device, int what) { InputInfoPtr pInfo; EvdevPtr pEvdev; pInfo = device->public.devicePrivate; pEvdev = pInfo->private; switch (what) { case DEVICE_INIT: return EvdevInit(device); case DEVICE_ON: return EvdevOn(device); case DEVICE_OFF: if (pEvdev->flags & EVDEV_INITIALIZED) { EvdevMBEmuFinalize(pInfo); Evdev3BEmuFinalize(pInfo); } if (pInfo->fd != -1) { EvdevGrabDevice(pInfo, 0, 1); xf86RemoveEnabledDevice(pInfo); EvdevCloseDevice(pInfo); } pEvdev->min_maj = 0; pEvdev->flags &= ~EVDEV_INITIALIZED; device->public.on = FALSE; break; case DEVICE_CLOSE: xf86IDrvMsg(pInfo, X_INFO, "Close\n"); EvdevCloseDevice(pInfo); EvdevFreeMasks(pEvdev); pEvdev->min_maj = 0; break; default: return BadValue; } return Success; } /** * Get as much information as we can from the fd and cache it. * * @return Success if the information was cached, or !Success otherwise. */ static int EvdevCache(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; int i; /* * Do not try to validate absinfo data since it is not expected * to be static, always refresh it in evdev structure. */ for (i = ABS_X; i <= ABS_MAX; i++) { if (libevdev_has_event_code(pEvdev->dev, EV_ABS, i)) { const struct input_absinfo *abs = libevdev_get_abs_info(pEvdev->dev, i); xf86IDrvMsgVerb(pInfo, X_PROBED, 6, "absolute axis %#x [%d..%d]\n", i, abs->minimum, abs->maximum); } } return Success; } /** * Issue an EVIOCGRAB on the device file, either as a grab or to ungrab, or * both. Return TRUE on success, otherwise FALSE. Failing the release is a * still considered a success, because it's not as if you could do anything * about it. */ static BOOL EvdevGrabDevice(InputInfoPtr pInfo, int grab, int ungrab) { EvdevPtr pEvdev = pInfo->private; if (pEvdev->grabDevice) { int rc; if (grab && (rc = libevdev_grab(pEvdev->dev, LIBEVDEV_GRAB)) < 0) { xf86IDrvMsg(pInfo, X_WARNING, "Grab failed (%s)\n", strerror(-rc)); return FALSE; } else if (ungrab && (rc = libevdev_grab(pEvdev->dev, LIBEVDEV_UNGRAB)) < 0) xf86IDrvMsg(pInfo, X_WARNING, "Release failed (%s)\n", strerror(-rc)); } return TRUE; } /** * Some devices only have other axes (e.g. wheels), but we * still need x/y for these. The server relies on devices having * x/y as axes 0/1 and core/XI 1.x clients expect it too (#44655) */ static void EvdevForceXY(InputInfoPtr pInfo, int mode) { EvdevPtr pEvdev = pInfo->private; xf86IDrvMsg(pInfo, X_INFO, "Forcing %s x/y axes to exist.\n", (mode == Relative) ? "relative" : "absolute"); if (mode == Relative) { libevdev_enable_event_code(pEvdev->dev, EV_REL, REL_X, NULL); libevdev_enable_event_code(pEvdev->dev, EV_REL, REL_Y, NULL); } else if (mode == Absolute) { struct input_absinfo abs; abs.minimum = 0; abs.maximum = 1000; abs.value = 0; abs.fuzz = 0; abs.flat = 0; abs.resolution = 0; libevdev_enable_event_code(pEvdev->dev, EV_ABS, ABS_X, &abs); libevdev_enable_event_code(pEvdev->dev, EV_ABS, ABS_Y, &abs); } } static int EvdevProbe(InputInfoPtr pInfo) { int i, has_rel_axes, has_abs_axes, has_keys, num_buttons, has_scroll; int has_lmr; /* left middle right */ int has_mt; /* multitouch */ int ignore_abs = 0, ignore_rel = 0; EvdevPtr pEvdev = pInfo->private; int rc = 1; xf86IDrvMsg(pInfo, X_PROBED, "Vendor %#hx Product %#hx\n", libevdev_get_id_vendor(pEvdev->dev), libevdev_get_id_product(pEvdev->dev)); /* Trinary state for ignoring axes: - unset: do the normal thing. - TRUE: explicitly ignore them. - FALSE: unignore axes, use them at all cost if they're present. */ if (xf86FindOption(pInfo->options, "IgnoreRelativeAxes")) { if (xf86SetBoolOption(pInfo->options, "IgnoreRelativeAxes", FALSE)) ignore_rel = TRUE; else pEvdev->flags |= EVDEV_UNIGNORE_RELATIVE; } if (xf86FindOption(pInfo->options, "IgnoreAbsoluteAxes")) { if (xf86SetBoolOption(pInfo->options, "IgnoreAbsoluteAxes", FALSE)) ignore_abs = TRUE; else pEvdev->flags |= EVDEV_UNIGNORE_ABSOLUTE; } has_rel_axes = FALSE; has_abs_axes = FALSE; has_keys = FALSE; has_scroll = FALSE; has_lmr = FALSE; has_mt = FALSE; num_buttons = 0; /* count all buttons */ for (i = BTN_MISC; i < BTN_JOYSTICK; i++) { int mapping = 0; if (libevdev_has_event_code(pEvdev->dev, EV_KEY, i)) { mapping = EvdevUtilButtonEventToButtonNumber(pEvdev, i); if (mapping > num_buttons) num_buttons = mapping; } } has_lmr = libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_LEFT) || libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_MIDDLE) || libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_RIGHT); if (num_buttons) { pEvdev->flags |= EVDEV_BUTTON_EVENTS; pEvdev->num_buttons = num_buttons; xf86IDrvMsg(pInfo, X_PROBED, "Found %d mouse buttons\n", num_buttons); } for (i = 0; i < REL_MAX; i++) { if (libevdev_has_event_code(pEvdev->dev, EV_REL, i)) { has_rel_axes = TRUE; break; } } if (has_rel_axes) { if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_WHEEL) || libevdev_has_event_code(pEvdev->dev, EV_REL, REL_HWHEEL) || libevdev_has_event_code(pEvdev->dev, EV_REL, REL_DIAL)) { xf86IDrvMsg(pInfo, X_PROBED, "Found scroll wheel(s)\n"); has_scroll = TRUE; if (!num_buttons) xf86IDrvMsg(pInfo, X_INFO, "Forcing buttons for scroll wheel(s)\n"); num_buttons = (num_buttons < 3) ? 7 : num_buttons + 4; pEvdev->num_buttons = num_buttons; } if (!ignore_rel) { xf86IDrvMsg(pInfo, X_PROBED, "Found relative axes\n"); pEvdev->flags |= EVDEV_RELATIVE_EVENTS; if (libevdev_has_event_code(pEvdev->dev, EV_REL, REL_X) && libevdev_has_event_code(pEvdev->dev, EV_REL, REL_Y)) { xf86IDrvMsg(pInfo, X_PROBED, "Found x and y relative axes\n"); } else if (!libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_X) || !libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_Y)) EvdevForceXY(pInfo, Relative); } else { xf86IDrvMsg(pInfo, X_INFO, "Relative axes present but ignored.\n"); has_rel_axes = FALSE; } } for (i = 0; i < ABS_MAX; i++) { if (libevdev_has_event_code(pEvdev->dev, EV_ABS, i)) { has_abs_axes = TRUE; break; } } for (i = ABS_MT_SLOT; i < ABS_MAX; i++) { if (libevdev_has_event_code(pEvdev->dev, EV_ABS, i)) { has_mt = TRUE; break; } } if (libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_SLOT) && libevdev_get_num_slots(pEvdev->dev) == -1) pEvdev->fake_mt = TRUE; if (ignore_abs && has_abs_axes) { xf86IDrvMsg(pInfo, X_INFO, "Absolute axes present but ignored.\n"); has_abs_axes = FALSE; } else if (has_abs_axes) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute axes\n"); pEvdev->flags |= EVDEV_ABSOLUTE_EVENTS; if (has_mt) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute multitouch axes\n"); if (num_buttons == 0) { if (libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_JOYSTICK)) { xf86IDrvMsg(pInfo, X_INFO, "Device is a Joystick with MT without buttons. Ignoring it.\n"); goto out; } else { xf86IDrvMsg(pInfo, X_INFO, "No buttons found, faking one.\n"); num_buttons = 1; pEvdev->num_buttons = num_buttons; pEvdev->flags |= EVDEV_BUTTON_EVENTS; } } if (pEvdev->fake_mt) xf86IDrvMsg(pInfo, X_PROBED, "Fake MT device detected\n"); } if ((libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_X) && libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_Y))) { xf86IDrvMsg(pInfo, X_PROBED, "Found x and y absolute axes\n"); if (libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_TOOL_PEN) || libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_STYLUS) || libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_STYLUS2)) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute tablet.\n"); pEvdev->flags |= EVDEV_TABLET; if (!pEvdev->num_buttons) { pEvdev->num_buttons = 7; /* LMR + scroll wheels */ pEvdev->flags |= EVDEV_BUTTON_EVENTS; } } else if (libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_PRESSURE) || libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_TOUCH)) { if (has_lmr || libevdev_has_event_code(pEvdev->dev, EV_KEY, BTN_TOOL_FINGER)) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute touchpad.\n"); pEvdev->flags |= EVDEV_TOUCHPAD; } else { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute touchscreen\n"); pEvdev->flags |= EVDEV_TOUCHSCREEN; pEvdev->flags |= EVDEV_BUTTON_EVENTS; } } else if (!(libevdev_has_event_code(pEvdev->dev, EV_REL, REL_X) && libevdev_has_event_code(pEvdev->dev, EV_REL, REL_Y)) && has_lmr) { /* some touchscreens use BTN_LEFT rather than BTN_TOUCH */ xf86IDrvMsg(pInfo, X_PROBED, "Found absolute touchscreen\n"); pEvdev->flags |= EVDEV_TOUCHSCREEN; pEvdev->flags |= EVDEV_BUTTON_EVENTS; } } else { if (!libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_POSITION_X) || !libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_POSITION_Y)) EvdevForceXY(pInfo, Absolute); } } for (i = 0; i < BTN_MISC; i++) { if (libevdev_has_event_code(pEvdev->dev, EV_KEY, i)) { xf86IDrvMsg(pInfo, X_PROBED, "Found keys\n"); pEvdev->flags |= EVDEV_KEYBOARD_EVENTS; has_keys = TRUE; break; } } if (has_rel_axes || has_abs_axes) { char *str; int num_calibration = 0, calibration[4] = { 0, 0, 0, 0 }; pEvdev->invert_x = xf86SetBoolOption(pInfo->options, "InvertX", FALSE); pEvdev->invert_y = xf86SetBoolOption(pInfo->options, "InvertY", FALSE); pEvdev->swap_axes = xf86SetBoolOption(pInfo->options, "SwapAxes", FALSE); pEvdev->resolution = xf86SetIntOption(pInfo->options, "Resolution", 0); if (pEvdev->resolution < 0) { xf86IDrvMsg(pInfo, X_ERROR, "Resolution must be a positive number"); pEvdev->resolution = 0; } str = xf86CheckStrOption(pInfo->options, "Calibration", NULL); if (str) { num_calibration = sscanf(str, "%d %d %d %d", &calibration[0], &calibration[1], &calibration[2], &calibration[3]); free(str); if (num_calibration == 4) EvdevSetCalibration(pInfo, num_calibration, calibration); else xf86IDrvMsg(pInfo, X_ERROR, "Insufficient calibration factors (%d). Ignoring calibration\n", num_calibration); } } if (has_rel_axes || has_abs_axes || num_buttons) { pInfo->flags |= XI86_SEND_DRAG_EVENTS; if (pEvdev->flags & EVDEV_TOUCHPAD) { xf86IDrvMsg(pInfo, X_INFO, "Configuring as touchpad\n"); pInfo->type_name = XI_TOUCHPAD; pEvdev->use_proximity = 0; } else if (pEvdev->flags & EVDEV_TABLET) { xf86IDrvMsg(pInfo, X_INFO, "Configuring as tablet\n"); pInfo->type_name = XI_TABLET; } else if (pEvdev->flags & EVDEV_TOUCHSCREEN) { xf86IDrvMsg(pInfo, X_INFO, "Configuring as touchscreen\n"); pInfo->type_name = XI_TOUCHSCREEN; } else { if (!libevdev_has_event_code(pEvdev->dev, EV_REL, REL_X) || !libevdev_has_event_code(pEvdev->dev, EV_REL, REL_Y)) EvdevForceXY(pInfo, Relative); xf86IDrvMsg(pInfo, X_INFO, "Configuring as mouse\n"); pInfo->type_name = XI_MOUSE; } rc = 0; } if (has_keys) { xf86IDrvMsg(pInfo, X_INFO, "Configuring as keyboard\n"); pInfo->type_name = XI_KEYBOARD; rc = 0; } if (has_scroll && (has_rel_axes || has_abs_axes || num_buttons || has_keys)) { xf86IDrvMsg(pInfo, X_INFO, "Adding scrollwheel support\n"); pEvdev->flags |= EVDEV_BUTTON_EVENTS; pEvdev->flags |= EVDEV_RELATIVE_EVENTS; pEvdev->smoothScroll.vert_delta = xf86SetIntOption(pInfo->options, "VertScrollDelta", 1); pEvdev->smoothScroll.horiz_delta = xf86SetIntOption(pInfo->options, "HorizScrollDelta", 1); pEvdev->smoothScroll.dial_delta = xf86SetIntOption(pInfo->options, "DialDelta", 1); } out: if (rc) xf86IDrvMsg(pInfo, X_WARNING, "Don't know how to use device\n"); return rc; } static void EvdevSetCalibration(InputInfoPtr pInfo, int num_calibration, int calibration[4]) { EvdevPtr pEvdev = pInfo->private; if (num_calibration == 0) { pEvdev->flags &= ~EVDEV_CALIBRATED; pEvdev->calibration.min_x = 0; pEvdev->calibration.max_x = 0; pEvdev->calibration.min_y = 0; pEvdev->calibration.max_y = 0; } else if (num_calibration == 4) { pEvdev->flags |= EVDEV_CALIBRATED; pEvdev->calibration.min_x = calibration[0]; pEvdev->calibration.max_x = calibration[1]; pEvdev->calibration.min_y = calibration[2]; pEvdev->calibration.max_y = calibration[3]; } } /** * Open an mtdev device for this device. mtdev is a bit too generous with * memory usage, so only do so for multitouch protocol A devices. * * @return FALSE on error, TRUE if mtdev was initiated or the device doesn't * need it */ static Bool EvdevOpenMTDev(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; if (pEvdev->mtdev) { pEvdev->cur_slot = pEvdev->mtdev->caps.slot.value; return TRUE; } else if (libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_SLOT)) { pEvdev->cur_slot = libevdev_get_current_slot(pEvdev->dev); return TRUE; } if (pInfo->fd < 0) { xf86Msg(X_ERROR, "%s: Bug. fd < 0\n", pInfo->name); return FALSE; } if (!libevdev_has_event_type(pEvdev->dev, EV_ABS)) return TRUE; /* don't need mtdev for protocol B devices */ if (libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_SLOT)) return TRUE; if (!libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_POSITION_X) || !libevdev_has_event_code(pEvdev->dev, EV_ABS, ABS_MT_POSITION_Y)) return TRUE; xf86IDrvMsg(pInfo, X_INFO, "Using mtdev for this device\n"); pEvdev->mtdev = mtdev_new_open(pInfo->fd); if (pEvdev->mtdev) pEvdev->cur_slot = pEvdev->mtdev->caps.slot.value; else { xf86Msg(X_ERROR, "%s: Couldn't open mtdev device\n", pInfo->name); EvdevCloseDevice(pInfo); return FALSE; } return TRUE; } static int EvdevOpenDevice(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; char *device = pEvdev->device; if (!device) { device = xf86CheckStrOption(pInfo->options, "Device", NULL); if (!device) { xf86IDrvMsg(pInfo, X_ERROR, "No device specified.\n"); return BadValue; } pEvdev->device = device; xf86IDrvMsg(pInfo, X_CONFIG, "Device: \"%s\"\n", device); } if (!(pInfo->flags & XI86_SERVER_FD) && pInfo->fd < 0) { do { pInfo->fd = open(device, O_RDWR | O_NONBLOCK, 0); } while (pInfo->fd < 0 && errno == EINTR); } if (pInfo->fd < 0) { xf86IDrvMsg(pInfo, X_ERROR, "Unable to open evdev device \"%s\".\n", device); return BadValue; } if (libevdev_get_fd(pEvdev->dev) != -1) { struct input_event ev; libevdev_change_fd(pEvdev->dev, pInfo->fd); /* re-sync libevdev's view of the device, but we don't care about the actual events here */ libevdev_next_event(pEvdev->dev, LIBEVDEV_READ_FLAG_FORCE_SYNC, &ev); while (libevdev_next_event(pEvdev->dev, LIBEVDEV_READ_FLAG_SYNC, &ev) == LIBEVDEV_READ_STATUS_SYNC) ; } else { int rc = libevdev_set_fd(pEvdev->dev, pInfo->fd); if (rc < 0) { xf86IDrvMsg(pInfo, X_ERROR, "Unable to query fd: %s\n", strerror(-rc)); return BadValue; } } /* Check major/minor of device node to avoid adding duplicate devices. */ pEvdev->min_maj = EvdevGetMajorMinor(pInfo); if (EvdevIsDuplicate(pInfo)) { xf86IDrvMsg(pInfo, X_WARNING, "device file is duplicate. Ignoring.\n"); EvdevCloseDevice(pInfo); return BadMatch; } if (!EvdevOpenMTDev(pInfo)) { xf86Msg(X_ERROR, "%s: Couldn't open mtdev device\n", pInfo->name); EvdevCloseDevice(pInfo); return BadValue; } return Success; } static void EvdevCloseDevice(InputInfoPtr pInfo) { EvdevPtr pEvdev = pInfo->private; if (!(pInfo->flags & XI86_SERVER_FD) && pInfo->fd >= 0) { close(pInfo->fd); pInfo->fd = -1; } if (pEvdev->mtdev) { mtdev_close_delete(pEvdev->mtdev); pEvdev->mtdev = NULL; } } static void EvdevUnInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags) { EvdevPtr pEvdev = pInfo ? pInfo->private : NULL; if (pEvdev) { /* Release string allocated in EvdevOpenDevice. */ free(pEvdev->device); pEvdev->device = NULL; free(pEvdev->type_name); pEvdev->type_name = NULL; libevdev_free(pEvdev->dev); } xf86DeleteInput(pInfo, flags); } static EvdevPtr EvdevAlloc(InputInfoPtr pInfo) { int i; EvdevPtr pEvdev = calloc(sizeof(EvdevRec), 1); if (!pEvdev) return NULL; pEvdev->dev = libevdev_new(); if (!pEvdev->dev) { free(pEvdev); return NULL; } /* * We initialize pEvdev->in_proximity to 1 so that device that doesn't use * proximity will still report events. */ pEvdev->in_proximity = 1; pEvdev->use_proximity = 1; pEvdev->cur_slot = -1; for (i = 0; i < ArrayLength(pEvdev->rel_axis_map); i++) pEvdev->rel_axis_map[i] = -1; for (i = 0; i < ArrayLength(pEvdev->abs_axis_map); i++) pEvdev->abs_axis_map[i] = -1; pEvdev->rel_axis_map[0] = 0; pEvdev->rel_axis_map[1] = 1; pEvdev->type_name = NULL; return pEvdev; } static int EvdevPreInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags) { EvdevPtr pEvdev; int rc = BadAlloc; if (!(pEvdev = EvdevAlloc(pInfo))) goto error; pInfo->private = pEvdev; pInfo->type_name = "UNKNOWN"; pInfo->device_control = EvdevProc; pInfo->read_input = EvdevReadInput; pInfo->switch_mode = EvdevSwitchMode; rc = EvdevOpenDevice(pInfo); if (rc != Success) goto error; /* Grabbing the event device stops in-kernel event forwarding. In other words, it disables rfkill and the "Macintosh mouse button emulation". Note that this needs a server that sets the console to RAW mode. */ pEvdev->grabDevice = xf86CheckBoolOption(pInfo->options, "GrabDevice", 0); /* If grabDevice is set, ungrab immediately since we only want to grab * between DEVICE_ON and DEVICE_OFF. If we never get DEVICE_ON, don't * hold a grab. */ if (!EvdevGrabDevice(pInfo, 1, 1)) { xf86IDrvMsg(pInfo, X_WARNING, "Device may already be configured.\n"); rc = BadMatch; goto error; } EvdevInitButtonMapping(pInfo); if (EvdevCache(pInfo) || EvdevProbe(pInfo)) { rc = BadMatch; goto error; } /* Overwrite type_name with custom-defined one (#62831). Note: pInfo->type_name isn't freed so we need to manually do this */ pEvdev->type_name = xf86SetStrOption(pInfo->options, "TypeName", pInfo->type_name); pInfo->type_name = pEvdev->type_name; if (pEvdev->flags & EVDEV_BUTTON_EVENTS) { EvdevMBEmuPreInit(pInfo); Evdev3BEmuPreInit(pInfo); EvdevWheelEmuPreInit(pInfo); EvdevDragLockPreInit(pInfo); } return Success; error: EvdevCloseDevice(pInfo); return rc; } _X_EXPORT InputDriverRec EVDEV = { 1, "evdev", NULL, EvdevPreInit, EvdevUnInit, NULL, NULL, #ifdef XI86_DRV_CAP_SERVER_FD XI86_DRV_CAP_SERVER_FD #endif }; static void EvdevUnplug(pointer p) { } static pointer EvdevPlug(pointer module, pointer options, int *errmaj, int *errmin) { xf86AddInputDriver(&EVDEV, module, 0); return module; } static XF86ModuleVersionInfo EvdevVersionRec = { "evdev", MODULEVENDORSTRING, MODINFOSTRING1, MODINFOSTRING2, XORG_VERSION_CURRENT, PACKAGE_VERSION_MAJOR, PACKAGE_VERSION_MINOR, PACKAGE_VERSION_PATCHLEVEL, ABI_CLASS_XINPUT, ABI_XINPUT_VERSION, MOD_CLASS_XINPUT, {0, 0, 0, 0} }; _X_EXPORT XF86ModuleData evdevModuleData = { &EvdevVersionRec, EvdevPlug, EvdevUnplug }; /* Return an index value for a given button event code * returns 0 on non-button event. */ unsigned int EvdevUtilButtonEventToButtonNumber(EvdevPtr pEvdev, int code) { switch (code) { /* Mouse buttons */ case BTN_LEFT: return 1; case BTN_MIDDLE: return 2; case BTN_RIGHT: return 3; case BTN_SIDE ... BTN_JOYSTICK - 1: return 8 + code - BTN_SIDE; /* Generic buttons */ case BTN_0 ... BTN_2: return 1 + code - BTN_0; case BTN_3 ... BTN_MOUSE - 1: return 8 + code - BTN_3; /* Tablet stylus buttons */ case BTN_TOUCH ... BTN_STYLUS2: return 1 + code - BTN_TOUCH; /* The rest */ default: /* Ignore */ return 0; } } static void EvdevInitOneAxisLabel(EvdevPtr pEvdev, int mapped_axis, const char **labels, int label_idx, Atom *atoms) { Atom atom; if (mapped_axis == -1) return; atom = XIGetKnownProperty(labels[label_idx]); if (!atom) /* Should not happen */ return; atoms[mapped_axis] = atom; } static void EvdevInitAxesLabels(EvdevPtr pEvdev, int mode, int natoms, Atom *atoms) { int axis; memset(atoms, 0, natoms * sizeof(Atom)); /* rel[0] and [1] are always mapped, so we get the rel labels. if we have abs x/y, the labels will be overwritten with the right one */ for (axis = 0; axis < ArrayLength(rel_labels); axis++) EvdevInitOneAxisLabel(pEvdev, pEvdev->rel_axis_map[axis], rel_labels, axis, atoms); for (axis = 0; axis < ArrayLength(abs_labels); axis++) EvdevInitOneAxisLabel(pEvdev, pEvdev->abs_axis_map[axis], abs_labels, axis, atoms); } static void EvdevInitButtonLabels(EvdevPtr pEvdev, int natoms, Atom *atoms) { Atom atom; int button, bmap; /* First, make sure all atoms are initialized */ atom = XIGetKnownProperty(BTN_LABEL_PROP_BTN_UNKNOWN); for (button = 0; button < natoms; button++) atoms[button] = atom; for (button = BTN_MISC; button < BTN_JOYSTICK; button++) { int group = (button % 0x100)/16; int idx = button - ((button/16) * 16); if (group >= ArrayLength(btn_labels)) break; if (!libevdev_has_event_code(pEvdev->dev, EV_KEY, button)) continue; if (!btn_labels[group][idx]) continue; atom = XIGetKnownProperty(btn_labels[group][idx]); if (!atom) continue; /* Props are 0-indexed, button numbers start with 1 */ bmap = EvdevUtilButtonEventToButtonNumber(pEvdev, button) - 1; atoms[bmap] = atom; } /* wheel buttons, hardcoded anyway */ if (natoms > 3) atoms[3] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_UP); if (natoms > 4) atoms[4] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_DOWN); if (natoms > 5) atoms[5] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_LEFT); if (natoms > 6) atoms[6] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_RIGHT); } static void EvdevInitProperty(DeviceIntPtr dev) { InputInfoPtr pInfo = dev->public.devicePrivate; EvdevPtr pEvdev = pInfo->private; int rc; char *device_node; CARD32 product[2]; prop_product_id = MakeAtom(XI_PROP_PRODUCT_ID, strlen(XI_PROP_PRODUCT_ID), TRUE); product[0] = libevdev_get_id_vendor(pEvdev->dev); product[1] = libevdev_get_id_product(pEvdev->dev); rc = XIChangeDeviceProperty(dev, prop_product_id, XA_INTEGER, 32, PropModeReplace, 2, product, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_product_id, FALSE); /* Device node property */ device_node = strdup(pEvdev->device); prop_device = MakeAtom(XI_PROP_DEVICE_NODE, strlen(XI_PROP_DEVICE_NODE), TRUE); rc = XIChangeDeviceProperty(dev, prop_device, XA_STRING, 8, PropModeReplace, strlen(device_node), device_node, FALSE); free(device_node); if (rc != Success) return; if (EvdevDeviceIsVirtual(pEvdev->device)) { BOOL virtual = 1; prop_virtual = MakeAtom(XI_PROP_VIRTUAL_DEVICE, strlen(XI_PROP_VIRTUAL_DEVICE), TRUE); rc = XIChangeDeviceProperty(dev, prop_virtual, XA_INTEGER, 8, PropModeReplace, 1, &virtual, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_virtual, FALSE); } XISetDevicePropertyDeletable(dev, prop_device, FALSE); if (pEvdev->flags & (EVDEV_RELATIVE_EVENTS | EVDEV_ABSOLUTE_EVENTS)) { BOOL invert[2]; invert[0] = pEvdev->invert_x; invert[1] = pEvdev->invert_y; prop_invert = MakeAtom(EVDEV_PROP_INVERT_AXES, strlen(EVDEV_PROP_INVERT_AXES), TRUE); rc = XIChangeDeviceProperty(dev, prop_invert, XA_INTEGER, 8, PropModeReplace, 2, invert, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_invert, FALSE); prop_calibration = MakeAtom(EVDEV_PROP_CALIBRATION, strlen(EVDEV_PROP_CALIBRATION), TRUE); if (pEvdev->flags & EVDEV_CALIBRATED) { int calibration[4]; calibration[0] = pEvdev->calibration.min_x; calibration[1] = pEvdev->calibration.max_x; calibration[2] = pEvdev->calibration.min_y; calibration[3] = pEvdev->calibration.max_y; rc = XIChangeDeviceProperty(dev, prop_calibration, XA_INTEGER, 32, PropModeReplace, 4, calibration, FALSE); } else if (pEvdev->flags & EVDEV_ABSOLUTE_EVENTS) { rc = XIChangeDeviceProperty(dev, prop_calibration, XA_INTEGER, 32, PropModeReplace, 0, NULL, FALSE); } if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_calibration, FALSE); prop_swap = MakeAtom(EVDEV_PROP_SWAP_AXES, strlen(EVDEV_PROP_SWAP_AXES), TRUE); rc = XIChangeDeviceProperty(dev, prop_swap, XA_INTEGER, 8, PropModeReplace, 1, &pEvdev->swap_axes, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_swap, FALSE); /* Axis labelling */ if ((pEvdev->num_vals > 0) && (prop_axis_label = XIGetKnownProperty(AXIS_LABEL_PROP))) { int mode; int num_axes = pEvdev->num_vals + pEvdev->num_mt_vals; Atom atoms[num_axes]; if (pEvdev->flags & EVDEV_ABSOLUTE_EVENTS) mode = Absolute; else if (pEvdev->flags & EVDEV_RELATIVE_EVENTS) mode = Relative; else { xf86IDrvMsg(pInfo, X_ERROR, "BUG: mode is neither absolute nor relative\n"); mode = Absolute; } EvdevInitAxesLabels(pEvdev, mode, num_axes, atoms); rc = XIChangeDeviceProperty(dev, prop_axis_label, XA_ATOM, 32, PropModeReplace, num_axes, atoms, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_axis_label, FALSE); } /* Button labelling */ if ((pEvdev->num_buttons > 0) && (prop_btn_label = XIGetKnownProperty(BTN_LABEL_PROP))) { Atom atoms[EVDEV_MAXBUTTONS]; EvdevInitButtonLabels(pEvdev, EVDEV_MAXBUTTONS, atoms); rc = XIChangeDeviceProperty(dev, prop_btn_label, XA_ATOM, 32, PropModeReplace, pEvdev->num_buttons, atoms, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_btn_label, FALSE); } { int smooth_scroll_values[3] = { pEvdev->smoothScroll.vert_delta, pEvdev->smoothScroll.horiz_delta, pEvdev->smoothScroll.dial_delta }; prop_scroll_dist = MakeAtom(EVDEV_PROP_SCROLL_DISTANCE, strlen(EVDEV_PROP_SCROLL_DISTANCE), TRUE); rc = XIChangeDeviceProperty(dev, prop_scroll_dist, XA_INTEGER, 32, PropModeReplace, 3, smooth_scroll_values, FALSE); if (rc != Success) return; XISetDevicePropertyDeletable(dev, prop_scroll_dist, FALSE); } } } static int EvdevSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val, BOOL checkonly) { InputInfoPtr pInfo = dev->public.devicePrivate; EvdevPtr pEvdev = pInfo->private; if (atom == prop_invert) { BOOL* data; if (val->format != 8 || val->size != 2 || val->type != XA_INTEGER) return BadMatch; if (!checkonly) { data = (BOOL*)val->data; pEvdev->invert_x = data[0]; pEvdev->invert_y = data[1]; } } else if (atom == prop_calibration) { if (val->format != 32 || val->type != XA_INTEGER) return BadMatch; if (val->size != 4 && val->size != 0) return BadMatch; if (!checkonly) EvdevSetCalibration(pInfo, val->size, val->data); } else if (atom == prop_swap) { if (val->format != 8 || val->type != XA_INTEGER || val->size != 1) return BadMatch; if (!checkonly) pEvdev->swap_axes = *((BOOL*)val->data); } else if (atom == prop_scroll_dist) { if (val->format != 32 || val->type != XA_INTEGER || val->size != 3) return BadMatch; if (!checkonly) { int *data = (int *)val->data; pEvdev->smoothScroll.vert_delta = data[0]; pEvdev->smoothScroll.horiz_delta = data[1]; pEvdev->smoothScroll.dial_delta = data[2]; EvdevSetScrollValuators(dev); } } else if (atom == prop_axis_label || atom == prop_btn_label || atom == prop_product_id || atom == prop_device || atom == prop_virtual) return BadAccess; /* Read-only properties */ return Success; }