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xf86-input-evdev-ahm/src/evdev.c

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/*
* 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)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "evdev.h"
#include "axis_labels.h"
#include <X11/keysym.h>
#include <X11/extensions/XI.h>
#include <linux/version.h>
#include <sys/stat.h>
#include <libudev.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <xf86.h>
#include <xf86Xinput.h>
#include <exevents.h>
#include <xorgVersion.h>
#include <xkbsrv.h>
#include <X11/Xatom.h>
#include <evdev-properties.h>
#include <xserver-properties.h>
#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
#ifndef MAXDEVICES
#include <inputstr.h> /* for MAX_DEVICES */
#define MAXDEVICES MAX_DEVICES
#endif
#define ArrayLength(a) (sizeof(a) / (sizeof((a)[0])))
#define MIN_KEYCODE 8
#define GLYPHS_PER_KEY 2
#define AltMask Mod1Mask
#define NumLockMask Mod2Mask
#define AltLangMask Mod3Mask
#define KanaMask Mod4Mask
#define ScrollLockMask Mod5Mask
#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
static const char *evdevDefaults[] = {
"XkbRules", "evdev",
"XkbModel", "evdev",
"XkbLayout", "us",
NULL
};
/* 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 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;
/* All devices the evdev driver has allocated and knows about.
* MAXDEVICES is safe as null-terminated array, as two devices (VCP and VCK)
* cannot be used by evdev, leaving us with a space of 2 at the end. */
static EvdevPtr evdev_devices[MAXDEVICES] = {NULL};
static int EvdevSwitchMode(ClientPtr client, DeviceIntPtr device, int mode)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
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;
break;
case Relative:
pEvdev->flags |= EVDEV_RELATIVE_MODE;
break;
default:
return XI_BadMode;
}
return Success;
}
static size_t EvdevCountBits(unsigned long *array, size_t nlongs)
{
unsigned int i;
size_t count = 0;
for (i = 0; i < nlongs; i++) {
unsigned long x = array[i];
while (x > 0)
{
count += (x & 0x1);
x >>= 1;
}
}
return count;
}
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;
EvdevPtr* dev = evdev_devices;
if (pEvdev->min_maj)
{
while(*dev)
{
if ((*dev) != pEvdev &&
(*dev)->min_maj &&
(*dev)->min_maj == pEvdev->min_maj)
return TRUE;
dev++;
}
}
return FALSE;
}
/**
* Add to internal device list.
*/
static void
EvdevAddDevice(InputInfoPtr pInfo)
{
EvdevPtr pEvdev = pInfo->private;
EvdevPtr* dev = evdev_devices;
while(*dev)
dev++;
*dev = pEvdev;
}
/**
* Remove from internal device list.
*/
static void
EvdevRemoveDevice(InputInfoPtr pInfo)
{
EvdevPtr pEvdev = pInfo->private;
EvdevPtr *dev = evdev_devices;
int count = 0;
while(*dev)
{
count++;
if (*dev == pEvdev)
{
memmove(dev, dev + 1,
sizeof(evdev_devices) - (count * sizeof(EvdevPtr)));
break;
}
dev++;
}
}
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;
}
#ifndef HAVE_SMOOTH_SCROLLING
static int wheel_up_button = 4;
static int wheel_down_button = 5;
static int wheel_left_button = 6;
static int wheel_right_button = 7;
#endif
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;
}
}
#ifdef MULTITOUCH
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;
}
}
#endif
/**
* 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)) {
swapped_isset[1 - i] = 1;
swapped_values[1 - i] =
xf86ScaleAxis(valuator_mask_get(mask, i),
pEvdev->absinfo[1 - i].maximum,
pEvdev->absinfo[1 - i].minimum,
pEvdev->absinfo[i].maximum,
pEvdev->absinfo[i].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++) {
int val;
int calib_min;
int calib_max;
if (!valuator_mask_isset(mask, i))
continue;
val = valuator_mask_get(mask, 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, pEvdev->absinfo[i].maximum,
pEvdev->absinfo[i].minimum, calib_max,
calib_min);
if ((i == 0 && pEvdev->invert_x) || (i == 1 && pEvdev->invert_y))
val = (pEvdev->absinfo[i].maximum - val +
pEvdev->absinfo[i].minimum);
valuator_mask_set(mask, i, val);
}
}
/**
* Take the valuators and process them accordingly.
*/
static void
EvdevProcessValuators(InputInfoPtr pInfo)
{
EvdevPtr pEvdev = pInfo->private;
int *delta = pEvdev->delta;
/* convert to relative motion for touchpads */
if (pEvdev->abs_queued && (pEvdev->flags & EVDEV_RELATIVE_MODE)) {
if (pEvdev->in_proximity) {
if (valuator_mask_isset(pEvdev->vals, 0))
{
if (valuator_mask_isset(pEvdev->old_vals, 0))
delta[REL_X] = valuator_mask_get(pEvdev->vals, 0) -
valuator_mask_get(pEvdev->old_vals, 0);
valuator_mask_set(pEvdev->old_vals, 0,
valuator_mask_get(pEvdev->vals, 0));
}
if (valuator_mask_isset(pEvdev->vals, 1))
{
if (valuator_mask_isset(pEvdev->old_vals, 1))
delta[REL_Y] = valuator_mask_get(pEvdev->vals, 1) -
valuator_mask_get(pEvdev->old_vals, 1);
valuator_mask_set(pEvdev->old_vals, 1,
valuator_mask_get(pEvdev->vals, 1));
}
} else {
valuator_mask_zero(pEvdev->old_vals);
}
valuator_mask_zero(pEvdev->vals);
pEvdev->abs_queued = 0;
pEvdev->rel_queued = 1;
}
if (pEvdev->rel_queued) {
int tmp;
int i;
if (pEvdev->swap_axes) {
tmp = pEvdev->delta[REL_X];
pEvdev->delta[REL_X] = pEvdev->delta[REL_Y];
pEvdev->delta[REL_Y] = tmp;
if (pEvdev->delta[REL_X] == 0)
valuator_mask_unset(pEvdev->vals, REL_X);
if (pEvdev->delta[REL_Y] == 0)
valuator_mask_unset(pEvdev->vals, REL_Y);
}
if (pEvdev->invert_x)
pEvdev->delta[REL_X] *= -1;
if (pEvdev->invert_y)
pEvdev->delta[REL_Y] *= -1;
Evdev3BEmuProcessRelMotion(pInfo,
pEvdev->delta[REL_X],
pEvdev->delta[REL_Y]);
for (i = 0; i < REL_CNT; i++)
{
int map = pEvdev->axis_map[i];
if (pEvdev->delta[i] && map != -1)
valuator_mask_set(pEvdev->vals, map, pEvdev->delta[i]);
}
}
/*
* 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->vals);
EvdevApplyCalibration(pEvdev, pEvdev->vals);
Evdev3BEmuProcessAbsMotion(pInfo, pEvdev->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->vals); i++)
if (valuator_mask_isset(pEvdev->vals, i))
valuator_mask_set(pEvdev->prox, i,
valuator_mask_get(pEvdev->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->vals, i) &&
valuator_mask_isset(pEvdev->prox, i))
valuator_mask_set(pEvdev->vals, i,
valuator_mask_get(pEvdev->prox, i));
valuator_mask_zero(pEvdev->prox);
pEvdev->abs_queued = valuator_mask_size(pEvdev->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) {
#ifndef HAVE_SMOOTH_SCROLLING
case REL_WHEEL:
if (value > 0)
EvdevQueueButtonClicks(pInfo, wheel_up_button, value);
else if (value < 0)
EvdevQueueButtonClicks(pInfo, wheel_down_button, -value);
break;
case REL_DIAL:
case REL_HWHEEL:
if (value > 0)
EvdevQueueButtonClicks(pInfo, wheel_right_button, value);
else if (value < 0)
EvdevQueueButtonClicks(pInfo, wheel_left_button, -value);
break;
/* We don't post wheel events as axis motion. */
#endif
default:
/* Ignore EV_REL events if we never set up for them. */
if (!(pEvdev->flags & EVDEV_RELATIVE_EVENTS))
return;
/* Handle mouse wheel emulation */
if (EvdevWheelEmuFilterMotion(pInfo, ev))
return;
pEvdev->rel_queued = 1;
pEvdev->delta[ev->code] += value;
map = pEvdev->axis_map[ev->code];
valuator_mask_set(pEvdev->vals, map, value);
break;
}
}
#ifdef MULTITOUCH
static void
EvdevProcessTouch(InputInfoPtr pInfo)
{
EvdevPtr pEvdev = pInfo->private;
int type;
if (pEvdev->cur_slot < 0 || !pEvdev->mt_mask)
return;
/* If the ABS_MT_SLOT is the first event we get after EV_SYN, skip this */
if (pEvdev->slot_state == SLOTSTATE_EMPTY)
return;
if (pEvdev->slot_state == SLOTSTATE_CLOSE)
type = XI_TouchEnd;
else if (pEvdev->slot_state == SLOTSTATE_OPEN)
type = XI_TouchBegin;
else
type = XI_TouchUpdate;
EvdevQueueTouchEvent(pInfo, pEvdev->cur_slot, pEvdev->mt_mask, type);
pEvdev->slot_state = SLOTSTATE_EMPTY;
valuator_mask_zero(pEvdev->mt_mask);
}
static int
num_slots(EvdevPtr pEvdev)
{
int value = pEvdev->absinfo[ABS_MT_SLOT].maximum -
pEvdev->absinfo[ABS_MT_SLOT].minimum + 1;
/* 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 - pEvdev->absinfo[ABS_MT_SLOT].minimum;
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)
return;
if (ev->code == ABS_MT_SLOT) {
EvdevProcessTouch(pInfo);
pEvdev->cur_slot = ev->value;
} else
{
int slot_index = last_mt_vals_slot(pEvdev);
if (pEvdev->slot_state == SLOTSTATE_EMPTY)
pEvdev->slot_state = SLOTSTATE_UPDATE;
if (ev->code == ABS_MT_TRACKING_ID) {
if (ev->value >= 0) {
pEvdev->slot_state = SLOTSTATE_OPEN;
if (slot_index >= 0)
valuator_mask_copy(pEvdev->mt_mask,
pEvdev->last_mt_vals[slot_index]);
else
LogMessageVerbSigSafe(X_WARNING, 0,
"%s: Attempted to copy values from out-of-range "
"slot, touch events may be incorrect.\n",
pInfo->name);
} else
pEvdev->slot_state = SLOTSTATE_CLOSE;
} else {
map = pEvdev->axis_map[ev->code];
valuator_mask_set(pEvdev->mt_mask, map, ev->value);
if (slot_index >= 0)
valuator_mask_set(pEvdev->last_mt_vals[slot_index], map,
ev->value);
}
}
}
#else
#define EvdevProcessTouch(pInfo)
#define EvdevProcessTouchEvent(pInfo, ev)
#endif /* MULTITOUCH */
/**
* 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;
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->axis_map[ev->code];
valuator_mask_set(pEvdev->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;
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, int num_v, int first_v,
int v[MAX_VALUATORS])
{
EvdevPtr pEvdev = pInfo->private;
if (pEvdev->rel_queued) {
xf86PostMotionEventM(pInfo->dev, Relative, pEvdev->vals);
}
}
/**
* Post the absolute motion events.
*/
void
EvdevPostAbsoluteMotionEvents(InputInfoPtr pInfo, int num_v, int first_v,
int v[MAX_VALUATORS])
{
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->vals);
}
}
static void
EvdevPostProximityEvents(InputInfoPtr pInfo, int which, int num_v, int first_v,
int v[MAX_VALUATORS])
{
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:
#ifdef MULTITOUCH
case EV_QUEUE_TOUCH:
#endif
break;
case EV_QUEUE_PROXIMITY:
if (pEvdev->queue[i].val == which)
xf86PostProximityEventP(pInfo->dev, which, first_v, num_v,
v + first_v);
break;
}
}
}
/**
* Post the queued key/button events.
*/
static void EvdevPostQueuedEvents(InputInfoPtr pInfo, int num_v, int first_v,
int v[MAX_VALUATORS])
{
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) {
xf86PostButtonEventP(pInfo->dev, Absolute, pEvdev->queue[i].detail.key,
pEvdev->queue[i].val, first_v, num_v,
v + first_v);
} else
xf86PostButtonEvent(pInfo->dev, Relative, pEvdev->queue[i].detail.key,
pEvdev->queue[i].val, 0, 0);
break;
case EV_QUEUE_PROXIMITY:
break;
#ifdef MULTITOUCH
case EV_QUEUE_TOUCH:
xf86PostTouchEvent(pInfo->dev, pEvdev->queue[i].detail.touch,
pEvdev->queue[i].val, 0,
pEvdev->queue[i].touchMask);
break;
#endif
}
}
}
/**
* 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;
int num_v = 0, first_v = 0;
int v[MAX_VALUATORS] = {};
EvdevPtr pEvdev = pInfo->private;
EvdevProcessProximityState(pInfo);
EvdevProcessValuators(pInfo);
EvdevProcessTouch(pInfo);
EvdevPostProximityEvents(pInfo, TRUE, num_v, first_v, v);
EvdevPostRelativeMotionEvents(pInfo, num_v, first_v, v);
EvdevPostAbsoluteMotionEvents(pInfo, num_v, first_v, v);
EvdevPostQueuedEvents(pInfo, num_v, first_v, v);
EvdevPostProximityEvents(pInfo, FALSE, num_v, first_v, v);
memset(pEvdev->delta, 0, sizeof(pEvdev->delta));
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->vals)
valuator_mask_zero(pEvdev->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;
}
}
#undef ABS_X_VALUE
#undef ABS_Y_VALUE
#undef ABS_VALUE
static void
EvdevFreeMasks(EvdevPtr pEvdev)
{
#ifdef MULTITOUCH
int i;
#endif
valuator_mask_free(&pEvdev->vals);
valuator_mask_free(&pEvdev->old_vals);
valuator_mask_free(&pEvdev->prox);
#ifdef MULTITOUCH
valuator_mask_free(&pEvdev->mt_mask);
if (pEvdev->last_mt_vals)
{
for (i = 0; i < num_slots(pEvdev); 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);
#endif
}
/* just a magic number to reduce the number of reads */
#define NUM_EVENTS 16
static void
EvdevReadInput(InputInfoPtr pInfo)
{
struct input_event ev[NUM_EVENTS];
int i, len = sizeof(ev);
while (len == sizeof(ev))
{
#ifdef MULTITOUCH
EvdevPtr pEvdev = pInfo->private;
if (pEvdev->mtdev)
len = mtdev_get(pEvdev->mtdev, pInfo->fd, ev, NUM_EVENTS) *
sizeof(struct input_event);
else
#endif
len = read(pInfo->fd, &ev, sizeof(ev));
if (len <= 0)
{
if (errno == ENODEV) /* May happen after resume */
xf86RemoveEnabledDevice(pInfo);
else if (errno != EAGAIN)
LogMessageVerbSigSafe(X_ERROR, 0, "%s: Read error: %s\n", pInfo->name,
strerror(errno));
break;
}
/* The kernel promises that we always only read a complete
* event, so len != sizeof ev is an error. */
if (len % sizeof(ev[0])) {
LogMessageVerbSigSafe(X_ERROR, 0, "%s: Read error: %s\n", pInfo->name, strerror(errno));
break;
}
for (i = 0; i < len/sizeof(ev[0]); i++)
EvdevProcessEvent(pInfo, &ev[i]);
}
}
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)];
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;
}
write(pInfo->fd, ev, sizeof ev);
}
static int
EvdevAddKeyClass(DeviceIntPtr device)
{
int rc = Success;
XkbRMLVOSet rmlvo = {0};
InputInfoPtr pInfo;
pInfo = device->public.devicePrivate;
/* 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", NULL);
rmlvo.layout = xf86SetStrOption(pInfo->options, "xkb_layout", NULL);
rmlvo.variant = xf86SetStrOption(pInfo->options, "xkb_variant", NULL);
rmlvo.options = xf86SetStrOption(pInfo->options, "xkb_options", NULL);
if (!InitKeyboardDeviceStruct(device, &rmlvo, NULL, EvdevKbdCtrl))
rc = !Success;
XkbFreeRMLVOSet(&rmlvo, FALSE);
return rc;
}
#ifdef MULTITOUCH
/* 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},
};
#endif
/**
* 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
EvdevAddAbsValuatorClass(DeviceIntPtr device)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
int num_axes, axis, i = 0;
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 */
Atom *atoms;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
if (!EvdevBitIsSet(pEvdev->bitmask, EV_ABS))
goto out;
num_axes = EvdevCountBits(pEvdev->abs_bitmask, NLONGS(ABS_MAX));
if (num_axes < 1)
goto out;
#ifdef MULTITOUCH
for (axis = ABS_MT_SLOT; axis < ABS_MAX; axis++)
{
if (EvdevBitIsSet(pEvdev->abs_bitmask, axis))
{
int j;
Bool skip = FALSE;
for (j = 0; j < ArrayLength(mt_axis_mappings); j++)
{
if (mt_axis_mappings[j].mt_code == axis &&
BitIsOn(pEvdev->abs_bitmask, 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--;
}
}
#endif
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->vals = valuator_mask_new(num_axes);
pEvdev->old_vals = valuator_mask_new(num_axes);
if (!pEvdev->vals || !pEvdev->old_vals) {
xf86IDrvMsg(pInfo, X_ERROR, "failed to allocate valuator masks.\n");
goto out;
}
}
#ifdef MULTITOUCH
if (num_mt_axes_total > 0) {
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->last_mt_vals = calloc(num_slots(pEvdev), 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 < num_slots(pEvdev); 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;
}
}
}
#endif
atoms = malloc((pEvdev->num_vals + num_mt_axes) * sizeof(Atom));
i = 0;
for (axis = ABS_X; i < MAX_VALUATORS && axis <= ABS_MAX; axis++) {
#ifdef MULTITOUCH
int j;
#endif
int mapping;
pEvdev->axis_map[axis] = -1;
if (!EvdevBitIsSet(pEvdev->abs_bitmask, axis) ||
is_blacklisted_axis(axis))
continue;
mapping = i;
#ifdef MULTITOUCH
for (j = 0; 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;
}
#endif
pEvdev->axis_map[axis] = mapping;
if (mapping == i)
i++;
}
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;
}
#ifdef MULTITOUCH
if (pEvdev->mtdev && num_mt_axes_total > 0)
{
int num_touches = 0;
int mode = pEvdev->flags & EVDEV_TOUCHPAD ?
XIDependentTouch : XIDirectTouch;
if (pEvdev->mtdev->caps.slot.maximum > 0)
num_touches = pEvdev->mtdev->caps.slot.maximum -
pEvdev->mtdev->caps.slot.minimum + 1;
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_slots(pEvdev); i++) {
for (axis = ABS_MT_TOUCH_MAJOR; axis < ABS_MAX; axis++) {
if (pEvdev->axis_map[axis] >= 0) {
/* XXX: read initial values from mtdev when it adds support
* for doing so. */
valuator_mask_set(pEvdev->last_mt_vals[i],
pEvdev->axis_map[axis], 0);
}
}
}
}
#endif
for (axis = ABS_X; axis < ABS_MT_SLOT; axis++) {
int axnum = pEvdev->axis_map[axis];
int resolution = 0;
if (axnum == -1)
continue;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 30)
/* Kernel provides units/mm, X wants units/m */
if (pEvdev->absinfo[axis].resolution)
resolution = pEvdev->absinfo[axis].resolution * 1000;
#endif
xf86InitValuatorAxisStruct(device, axnum,
atoms[axnum],
pEvdev->absinfo[axis].minimum,
pEvdev->absinfo[axis].maximum,
resolution, 0, resolution, Absolute);
xf86InitValuatorDefaults(device, axnum);
}
#ifdef MULTITOUCH
for (axis = ABS_MT_TOUCH_MAJOR; axis <= ABS_MAX; axis++) {
int axnum = pEvdev->axis_map[axis];
int resolution = 0;
int j;
BOOL skip = FALSE;
if (axnum < 0)
continue;
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;
if (pEvdev->absinfo[axis].resolution)
resolution = pEvdev->absinfo[axis].resolution * 1000;
xf86InitValuatorAxisStruct(device, axnum,
atoms[axnum],
pEvdev->absinfo[axis].minimum,
pEvdev->absinfo[axis].maximum,
resolution, 0, resolution,
Absolute);
}
#endif
free(atoms);
for (i = 0; i < ArrayLength(proximity_bits); i++)
{
if (!pEvdev->use_proximity)
break;
if (EvdevBitIsSet(pEvdev->key_bitmask, 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
EvdevAddRelValuatorClass(DeviceIntPtr device)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
int num_axes, axis, i = 0;
Atom *atoms;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
if (!EvdevBitIsSet(pEvdev->bitmask, EV_REL))
goto out;
num_axes = EvdevCountBits(pEvdev->rel_bitmask, NLONGS(REL_MAX));
if (num_axes < 1)
goto out;
#ifndef HAVE_SMOOTH_SCROLLING
/* Wheels are special, we post them as button events. So let's ignore them
* in the axes list too */
if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_WHEEL))
num_axes--;
if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_HWHEEL))
num_axes--;
if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_DIAL))
num_axes--;
if (num_axes <= 0)
goto out;
#endif
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->vals = valuator_mask_new(num_axes);
if (!pEvdev->vals)
goto out;
}
atoms = malloc(pEvdev->num_vals * sizeof(Atom));
for (axis = REL_X; i < MAX_VALUATORS && axis <= REL_MAX; axis++)
{
pEvdev->axis_map[axis] = -1;
#ifndef HAVE_SMOOTH_SCROLLING
/* We don't post wheel events, so ignore them here too */
if (axis == REL_WHEEL || axis == REL_HWHEEL || axis == REL_DIAL)
continue;
#endif
if (!EvdevBitIsSet(pEvdev->rel_bitmask, axis))
continue;
pEvdev->axis_map[axis] = i;
i++;
}
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->axis_map[axis];
if (axnum == -1)
continue;
xf86InitValuatorAxisStruct(device, axnum, atoms[axnum], -1, -1, 1, 0, 1,
Relative);
xf86InitValuatorDefaults(device, axnum);
#ifdef HAVE_SMOOTH_SCROLLING
if (axis == REL_WHEEL)
SetScrollValuator(device, axnum, SCROLL_TYPE_VERTICAL, -1.0, SCROLL_FLAG_PREFERRED);
else if (axis == REL_DIAL)
SetScrollValuator(device, axnum, SCROLL_TYPE_VERTICAL, -1.0, SCROLL_FLAG_NONE);
else if (axis == REL_HWHEEL)
SetScrollValuator(device, axnum, SCROLL_TYPE_HORIZONTAL, 1.0, SCROLL_FLAG_NONE);
#endif
}
free(atoms);
return Success;
out:
valuator_mask_free(&pEvdev->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 void
EvdevInitAnyValuators(DeviceIntPtr device, EvdevPtr pEvdev)
{
InputInfoPtr pInfo = device->public.devicePrivate;
if (pEvdev->flags & EVDEV_RELATIVE_EVENTS &&
EvdevAddRelValuatorClass(device) == Success)
xf86IDrvMsg(pInfo, X_INFO, "initialized for relative axes.\n");
if (pEvdev->flags & EVDEV_ABSOLUTE_EVENTS &&
EvdevAddAbsValuatorClass(device) == Success)
xf86IDrvMsg(pInfo, X_INFO, "initialized for absolute axes.\n");
}
static void
EvdevInitAbsValuators(DeviceIntPtr device, EvdevPtr pEvdev)
{
InputInfoPtr pInfo = device->public.devicePrivate;
if (EvdevAddAbsValuatorClass(device) == 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;
if (EvdevAddRelValuatorClass(device) == 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)
{
int i;
InputInfoPtr pInfo;
EvdevPtr pEvdev;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
/* clear all axis_map entries */
for(i = 0; i < max(ABS_CNT,REL_CNT); i++)
pEvdev->axis_map[i]=-1;
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))
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);
EvdevRemoveDevice(pInfo);
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, len;
struct input_id id;
char name[1024] = {0};
unsigned long bitmask[NLONGS(EV_CNT)] = {0};
unsigned long key_bitmask[NLONGS(KEY_CNT)] = {0};
unsigned long rel_bitmask[NLONGS(REL_CNT)] = {0};
unsigned long abs_bitmask[NLONGS(ABS_CNT)] = {0};
unsigned long led_bitmask[NLONGS(LED_CNT)] = {0};
if (ioctl(pInfo->fd, EVIOCGID, &id) < 0)
{
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGID failed: %s\n", strerror(errno));
goto error;
}
pEvdev->id_vendor = id.vendor;
pEvdev->id_product = id.product;
if (ioctl(pInfo->fd, EVIOCGNAME(sizeof(name) - 1), name) < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGNAME failed: %s\n", strerror(errno));
goto error;
}
strcpy(pEvdev->name, name);
len = ioctl(pInfo->fd, EVIOCGBIT(0, sizeof(bitmask)), bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
goto error;
}
memcpy(pEvdev->bitmask, bitmask, len);
len = ioctl(pInfo->fd, EVIOCGBIT(EV_REL, sizeof(rel_bitmask)), rel_bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
goto error;
}
memcpy(pEvdev->rel_bitmask, rel_bitmask, len);
len = ioctl(pInfo->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
goto error;
}
memcpy(pEvdev->abs_bitmask, abs_bitmask, len);
len = ioctl(pInfo->fd, EVIOCGBIT(EV_LED, sizeof(led_bitmask)), led_bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
goto error;
}
memcpy(pEvdev->led_bitmask, led_bitmask, len);
/*
* 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 (EvdevBitIsSet(abs_bitmask, i)) {
len = ioctl(pInfo->fd, EVIOCGABS(i), &pEvdev->absinfo[i]);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGABSi(%d) failed: %s\n",
i, strerror(errno));
goto error;
}
xf86IDrvMsgVerb(pInfo, X_PROBED, 6, "absolute axis %#x [%d..%d]\n",
i, pEvdev->absinfo[i].maximum, pEvdev->absinfo[i].minimum);
}
}
len = ioctl(pInfo->fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
goto error;
}
/* Copy the data so we have reasonably up-to-date info */
memcpy(pEvdev->key_bitmask, key_bitmask, len);
return Success;
error:
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)
{
if (grab && ioctl(pInfo->fd, EVIOCGRAB, (void *)1)) {
xf86IDrvMsg(pInfo, X_WARNING, "Grab failed (%s)\n",
strerror(errno));
return FALSE;
} else if (ungrab && ioctl(pInfo->fd, EVIOCGRAB, (void *)0))
xf86IDrvMsg(pInfo, X_WARNING, "Release failed (%s)\n",
strerror(errno));
}
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)
{
EvdevSetBit(pEvdev->rel_bitmask, REL_X);
EvdevSetBit(pEvdev->rel_bitmask, REL_Y);
} else if (mode == Absolute)
{
EvdevSetBit(pEvdev->abs_bitmask, ABS_X);
EvdevSetBit(pEvdev->abs_bitmask, ABS_Y);
pEvdev->absinfo[ABS_X].minimum = 0;
pEvdev->absinfo[ABS_X].maximum = 1000;
pEvdev->absinfo[ABS_X].value = 0;
pEvdev->absinfo[ABS_X].resolution = 0;
pEvdev->absinfo[ABS_Y].minimum = 0;
pEvdev->absinfo[ABS_Y].maximum = 1000;
pEvdev->absinfo[ABS_Y].value = 0;
pEvdev->absinfo[ABS_Y].resolution = 0;
}
}
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",
pEvdev->id_vendor, pEvdev->id_product);
/* 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 (EvdevBitIsSet(pEvdev->key_bitmask, i))
{
mapping = EvdevUtilButtonEventToButtonNumber(pEvdev, i);
if (mapping > num_buttons)
num_buttons = mapping;
}
}
has_lmr = EvdevBitIsSet(pEvdev->key_bitmask, BTN_LEFT) ||
EvdevBitIsSet(pEvdev->key_bitmask, BTN_MIDDLE) ||
EvdevBitIsSet(pEvdev->key_bitmask, 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 (EvdevBitIsSet(pEvdev->rel_bitmask, i)) {
has_rel_axes = TRUE;
break;
}
}
if (has_rel_axes) {
if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_WHEEL) ||
EvdevBitIsSet(pEvdev->rel_bitmask, REL_HWHEEL) ||
EvdevBitIsSet(pEvdev->rel_bitmask, 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 (EvdevBitIsSet(pEvdev->rel_bitmask, REL_X) &&
EvdevBitIsSet(pEvdev->rel_bitmask, REL_Y)) {
xf86IDrvMsg(pInfo, X_PROBED, "Found x and y relative axes\n");
} else if (!EvdevBitIsSet(pEvdev->abs_bitmask, ABS_X) ||
!EvdevBitIsSet(pEvdev->abs_bitmask, 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 (EvdevBitIsSet(pEvdev->abs_bitmask, i)) {
has_abs_axes = TRUE;
break;
}
}
#ifdef MULTITOUCH
for (i = ABS_MT_SLOT; i < ABS_MAX; i++) {
if (EvdevBitIsSet(pEvdev->abs_bitmask, i)) {
has_mt = TRUE;
break;
}
}
#endif
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 (EvdevBitIsSet(pEvdev->key_bitmask, 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 ((EvdevBitIsSet(pEvdev->abs_bitmask, ABS_X) &&
EvdevBitIsSet(pEvdev->abs_bitmask, ABS_Y))) {
xf86IDrvMsg(pInfo, X_PROBED, "Found x and y absolute axes\n");
if (EvdevBitIsSet(pEvdev->key_bitmask, BTN_TOOL_PEN) ||
EvdevBitIsSet(pEvdev->key_bitmask, BTN_STYLUS) ||
EvdevBitIsSet(pEvdev->key_bitmask, 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 (EvdevBitIsSet(pEvdev->abs_bitmask, ABS_PRESSURE) ||
EvdevBitIsSet(pEvdev->key_bitmask, BTN_TOUCH)) {
if (has_lmr || EvdevBitIsSet(pEvdev->key_bitmask, 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 (!(EvdevBitIsSet(pEvdev->rel_bitmask, REL_X) &&
EvdevBitIsSet(pEvdev->rel_bitmask, 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 {
#ifdef MULTITOUCH
if (!EvdevBitIsSet(pEvdev->abs_bitmask, ABS_MT_POSITION_X) ||
!EvdevBitIsSet(pEvdev->abs_bitmask, ABS_MT_POSITION_Y))
#endif
EvdevForceXY(pInfo, Absolute);
}
}
for (i = 0; i < BTN_MISC; i++) {
if (EvdevBitIsSet(pEvdev->key_bitmask, 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);
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 (!EvdevBitIsSet(pEvdev->rel_bitmask, REL_X) ||
!EvdevBitIsSet(pEvdev->rel_bitmask, 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;
}
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];
}
}
#ifdef MULTITOUCH
/**
* Open an mtdev device for this device. mtdev is a bit too generous with
* memory usage, so only do so for devices with multitouch bits set.
*
* @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;
unsigned long bitmask[NLONGS(EV_CNT)] = {0};
unsigned long abs_bitmask[NLONGS(ABS_CNT)] = {0};
int len;
if (pEvdev->mtdev) {
pEvdev->cur_slot = pEvdev->mtdev->caps.slot.value;
return TRUE;
}
if (pInfo->fd < 0) {
xf86Msg(X_ERROR, "%s: Bug. fd < 0\n", pInfo->name);
return FALSE;
}
/* Use ioctl here, this may be called before EvdevCache */
len = ioctl(pInfo->fd, EVIOCGBIT(0, sizeof(bitmask)), bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
return FALSE;
}
if (!EvdevBitIsSet(bitmask, EV_ABS))
return TRUE;
len = ioctl(pInfo->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask);
if (len < 0) {
xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGBIT failed: %s\n",
strerror(errno));
return FALSE;
}
if (!EvdevBitIsSet(abs_bitmask, ABS_MT_POSITION_X) ||
!EvdevBitIsSet(abs_bitmask, 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;
}
#endif
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->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;
}
}
/* 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;
}
#ifdef MULTITOUCH
if (!EvdevOpenMTDev(pInfo)) {
xf86Msg(X_ERROR, "%s: Couldn't open mtdev device\n", pInfo->name);
EvdevCloseDevice(pInfo);
return FALSE;
}
#endif
return Success;
}
static void
EvdevCloseDevice(InputInfoPtr pInfo)
{
EvdevPtr pEvdev = pInfo->private;
if (pInfo->fd >= 0)
{
close(pInfo->fd);
pInfo->fd = -1;
}
#ifdef MULTITOUCH
if (pEvdev->mtdev)
{
mtdev_close_delete(pEvdev->mtdev);
pEvdev->mtdev = NULL;
}
#endif
}
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;
}
xf86DeleteInput(pInfo, flags);
}
static int
EvdevPreInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags)
{
EvdevPtr pEvdev;
int rc = BadAlloc;
if (!(pEvdev = calloc(sizeof(EvdevRec), 1)))
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;
#ifdef MULTITOUCH
pEvdev->cur_slot = -1;
#endif
/*
* 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;
/* 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;
}
EvdevAddDevice(pInfo);
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,
evdevDefaults
};
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 axis,
const char **labels, int label_idx, Atom *atoms)
{
Atom atom;
if (pEvdev->axis_map[axis] == -1)
return;
atom = XIGetKnownProperty(labels[label_idx]);
if (!atom) /* Should not happen */
return;
atoms[pEvdev->axis_map[axis]] = atom;
}
static void EvdevInitAxesLabels(EvdevPtr pEvdev, int mode, int natoms, Atom *atoms)
{
int axis;
const char **labels;
int labels_len = 0;
if (mode == Absolute)
{
labels = abs_labels;
labels_len = ArrayLength(abs_labels);
} else if (mode == Relative)
{
labels = rel_labels;
labels_len = ArrayLength(rel_labels);
} else
return;
memset(atoms, 0, natoms * sizeof(Atom));
/* Now fill the ones we know */
for (axis = 0; axis < labels_len; axis++)
EvdevInitOneAxisLabel(pEvdev, axis, 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++)
{
if (EvdevBitIsSet(pEvdev->key_bitmask, button))
{
int group = (button % 0x100)/16;
int idx = button - ((button/16) * 16);
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] = pEvdev->id_vendor;
product[1] = pEvdev->id_product;
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);
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);
XIChangeDeviceProperty(dev, prop_axis_label, XA_ATOM, 32,
PropModeReplace, num_axes, atoms, FALSE);
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);
XIChangeDeviceProperty(dev, prop_btn_label, XA_ATOM, 32,
PropModeReplace, pEvdev->num_buttons, atoms, FALSE);
XISetDevicePropertyDeletable(dev, prop_btn_label, 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_axis_label || atom == prop_btn_label ||
atom == prop_product_id || atom == prop_device ||
atom == prop_virtual)
return BadAccess; /* Read-only properties */
return Success;
}