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75af278861dcd96124544d3c2889028578708317
xf86-input-evdev/src/evdev.c
Adam Jackson 75af278861 Open with O_NONBLOCK, and simplify EvdevReadInput to match. 
xf86WaitForInput() would call select() with zero timeout to discover if
more input was ready.  But we know that's always true at least once,
since we're only ever called from the sigio handler (if silken is
active) or from the main loop (if it's not and we selected readable).
With nonblocking IO we can just spin around until we hit EAGAIN, which
gets us down to n+1 syscalls per event instead of 2n.
2009-02-23 16:01:14 -05:00

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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)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <X11/keysym.h>
#include <sys/stat.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 "evdev.h"
#ifdef HAVE_PROPERTIES
#include <X11/Xatom.h>
#include <evdev-properties.h>
#include <xserver-properties.h>
/* 1.6 has properties, but no labels */
#ifdef AXIS_LABEL_PROP
#define HAVE_LABELS
#else
#undef HAVE_LABELS
#endif
#endif
#ifndef MAXDEVICES
#include <inputstr.h> /* for MAX_DEVICES */
#define MAXDEVICES MAX_DEVICES
#endif
/* 2.4 compatibility */
#ifndef EVIOCGRAB
#define EVIOCGRAB _IOW('E', 0x90, int)
#endif
#ifndef BTN_TASK
#define BTN_TASK 0x117
#endif
#ifndef EV_SYN
#define EV_SYN EV_RST
#endif
/* end compat */
#define ArrayLength(a) (sizeof(a) / (sizeof((a)[0])))
/* evdev flags */
#define EVDEV_KEYBOARD_EVENTS (1 << 0)
#define EVDEV_BUTTON_EVENTS (1 << 1)
#define EVDEV_RELATIVE_EVENTS (1 << 2)
#define EVDEV_ABSOLUTE_EVENTS (1 << 3)
#define EVDEV_TOUCHPAD (1 << 4)
#define EVDEV_INITIALIZED (1 << 5) /* WheelInit etc. called already? */
#define EVDEV_TOUCHSCREEN (1 << 6)
#define EVDEV_CALIBRATED (1 << 7) /* run-time calibrated? */
#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
static const char *evdevDefaults[] = {
"XkbRules", "evdev",
"XkbModel", "evdev",
"XkbLayout", "us",
NULL
};
static int EvdevOn(DeviceIntPtr);
static int EvdevCacheCompare(InputInfoPtr pInfo, BOOL compare);
#ifdef HAVE_PROPERTIES
static void EvdevInitProperty(DeviceIntPtr dev);
static int EvdevSetProperty(DeviceIntPtr dev, Atom atom,
XIPropertyValuePtr val, BOOL checkonly);
static Atom prop_invert = 0;
static Atom prop_reopen = 0;
static Atom prop_calibration = 0;
static Atom prop_swap = 0;
static Atom prop_label = 0;
#endif
/* 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 size_t CountBits(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 int
EvdevGetMajorMinor(InputInfoPtr pInfo)
{
struct stat st;
if (fstat(pInfo->fd, &st) == -1)
{
xf86Msg(X_ERROR, "%s: stat failed (%s). cannot check for duplicates.\n",
pInfo->name, 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 void
SetXkbOption(InputInfoPtr pInfo, char *name, char **option)
{
char *s;
if ((s = xf86SetStrOption(pInfo->options, name, NULL))) {
if (!s[0]) {
xfree(s);
*option = NULL;
} else {
*option = s;
}
}
}
static int wheel_up_button = 4;
static int wheel_down_button = 5;
static int wheel_left_button = 6;
static int wheel_right_button = 7;
static void
PostButtonClicks(InputInfoPtr pInfo, int button, int count)
{
int i;
for (i = 0; i < count; i++) {
xf86PostButtonEvent(pInfo->dev, 0, button, 1, 0, 0);
xf86PostButtonEvent(pInfo->dev, 0, button, 0, 0, 0);
}
}
static void
PostKbdEvent(InputInfoPtr pInfo, struct input_event *ev, int value)
{
int code = ev->code + MIN_KEYCODE;
static char warned[KEY_CNT];
/* Filter all repeated events from device.
We'll do softrepeat in the server */
if (value == 2)
return;
if (code > 255)
{
if (ev->code <= KEY_MAX && !warned[ev->code])
{
xf86Msg(X_WARNING, "%s: unable to handle keycode %d\n",
pInfo->name, ev->code);
warned[ev->code] = 1;
}
/* The X server can't handle keycodes > 255. */
return;
}
xf86PostKeyboardEvent(pInfo->dev, code, value);
}
/**
* Coming back from resume may leave us with a file descriptor that can be
* opened but fails on the first read (ENODEV).
* In this case, try to open the device until it becomes available or until
* the predefined count expires.
*/
static CARD32
EvdevReopenTimer(OsTimerPtr timer, CARD32 time, pointer arg)
{
InputInfoPtr pInfo = (InputInfoPtr)arg;
EvdevPtr pEvdev = pInfo->private;
do {
pInfo->fd = open(pEvdev->device, O_RDWR | O_NONBLOCK, 0);
} while (pInfo->fd < 0 && errno == EINTR);
if (pInfo->fd != -1)
{
if (EvdevCacheCompare(pInfo, TRUE) == Success)
{
xf86Msg(X_INFO, "%s: Device reopened after %d attempts.\n", pInfo->name,
pEvdev->reopen_attempts - pEvdev->reopen_left + 1);
EvdevOn(pInfo->dev);
} else
{
xf86Msg(X_ERROR, "%s: Device has changed - disabling.\n",
pInfo->name);
DisableDevice(pInfo->dev);
close(pInfo->fd);
pInfo->fd = -1;
pEvdev->min_maj = 0; /* don't hog the device */
}
pEvdev->reopen_left = 0;
return 0;
}
pEvdev->reopen_left--;
if (!pEvdev->reopen_left)
{
xf86Msg(X_ERROR, "%s: Failed to reopen device after %d attempts.\n",
pInfo->name, pEvdev->reopen_attempts);
DisableDevice(pInfo->dev);
pEvdev->min_maj = 0; /* don't hog the device */
return 0;
}
return 100; /* come back in 100 ms */
}
static void
EvdevReadInput(InputInfoPtr pInfo)
{
struct input_event ev;
int len, value;
int dx, dy, tmp;
unsigned int abs;
unsigned int button;
EvdevPtr pEvdev = pInfo->private;
dx = 0;
dy = 0;
tmp = 0;
abs = 0;
while (1) {
len = read(pInfo->fd, &ev, sizeof ev);
if (len != sizeof ev) {
if (errno == EAGAIN)
break;
/* The kernel promises that we always only read a complete
* event, so len != sizeof ev is an error. */
xf86Msg(X_ERROR, "%s: Read error: %s\n", pInfo->name, strerror(errno));
if (errno == ENODEV) /* May happen after resume */
{
xf86RemoveEnabledDevice(pInfo);
close(pInfo->fd);
pInfo->fd = -1;
pEvdev->reopen_left = pEvdev->reopen_attempts;
pEvdev->reopen_timer = TimerSet(NULL, 0, 100, EvdevReopenTimer, pInfo);
}
break;
}
/* Get the signed value, earlier kernels had this as unsigned */
value = ev.value;
switch (ev.type) {
case EV_REL:
/* Handle mouse wheel emulation */
if (EvdevWheelEmuFilterMotion(pInfo, &ev))
break;
switch (ev.code) {
case REL_X:
dx += value;
break;
case REL_Y:
dy += value;
break;
case REL_WHEEL:
if (value > 0)
PostButtonClicks(pInfo, wheel_up_button, value);
else if (value < 0)
PostButtonClicks(pInfo, wheel_down_button, -value);
break;
case REL_DIAL:
case REL_HWHEEL:
if (value > 0)
PostButtonClicks(pInfo, wheel_right_button, value);
else if (value < 0)
PostButtonClicks(pInfo, wheel_left_button, -value);
break;
}
break;
case EV_ABS:
if (ev.code > ABS_MAX)
break;
pEvdev->vals[pEvdev->axis_map[ev.code]] = value;
abs = 1;
break;
case EV_KEY:
/* don't repeat mouse buttons */
if (ev.code >= BTN_MOUSE && ev.code < KEY_OK)
if (value == 2)
break;
switch (ev.code) {
case BTN_TOUCH:
case BTN_TOOL_PEN:
case BTN_TOOL_RUBBER:
case BTN_TOOL_BRUSH:
case BTN_TOOL_PENCIL:
case BTN_TOOL_AIRBRUSH:
case BTN_TOOL_FINGER:
case BTN_TOOL_MOUSE:
case BTN_TOOL_LENS:
pEvdev->tool = value ? ev.code : 0;
if (!(pEvdev->flags & EVDEV_TOUCHSCREEN))
break;
/* Treat BTN_TOUCH from devices that only have BTN_TOUCH as
* BTN_LEFT. */
ev.code = BTN_LEFT;
/* Intentional fallthrough! */
default:
button = EvdevUtilButtonEventToButtonNumber(pEvdev, ev.code);
/* Handle drag lock */
if (EvdevDragLockFilterEvent(pInfo, button, value))
break;
if (EvdevWheelEmuFilterButton(pInfo, button, value))
break;
if (EvdevMBEmuFilterEvent(pInfo, button, value))
break;
if (button)
xf86PostButtonEvent(pInfo->dev, 0, button, value, 0, 0);
else
PostKbdEvent(pInfo, &ev, value);
break;
}
break;
case EV_SYN:
break;
}
}
/* convert to relative motion for touchpads */
if (abs && (pEvdev->flags & EVDEV_TOUCHPAD)) {
abs = 0;
if (pEvdev->tool) { /* meaning, touch is active */
if (pEvdev->old_vals[0] != -1)
dx = pEvdev->vals[0] - pEvdev->old_vals[0];
if (pEvdev->old_vals[1] != -1)
dy = pEvdev->vals[1] - pEvdev->old_vals[1];
pEvdev->old_vals[0] = pEvdev->vals[0];
pEvdev->old_vals[1] = pEvdev->vals[1];
} else {
pEvdev->old_vals[0] = pEvdev->old_vals[1] = -1;
}
}
if (dx != 0 || dy != 0) {
if (pEvdev->swap_axes) {
tmp = dx;
dx = dy;
dy = tmp;
}
if (pEvdev->invert_x)
dx *= -1;
if (pEvdev->invert_y)
dy *= -1;
xf86PostMotionEvent(pInfo->dev, FALSE, 0, 2, dx, dy);
}
/*
* Some devices only generate valid abs coords when BTN_DIGI is
* pressed. On wacom tablets, this means that the pen is in
* proximity of the tablet. After the pen is removed, BTN_DIGI is
* released, and a (0, 0) absolute event is generated. Checking
* pEvdev->digi here, lets us ignore that event. pEvdev is
* initialized to 1 so devices that doesn't use this scheme still
* just works.
*/
if (abs && pEvdev->tool) {
int v[MAX_VALUATORS];
memcpy(v, pEvdev->vals, sizeof(int) * pEvdev->num_vals);
if (pEvdev->flags & EVDEV_CALIBRATED)
{
v[0] = xf86ScaleAxis(v[0],
pEvdev->absinfo[ABS_X].maximum,
pEvdev->absinfo[ABS_X].minimum,
pEvdev->calibration.max_x, pEvdev->calibration.min_x);
v[1] = xf86ScaleAxis(v[1],
pEvdev->absinfo[ABS_Y].maximum,
pEvdev->absinfo[ABS_Y].minimum,
pEvdev->calibration.max_y, pEvdev->calibration.min_y);
}
if (pEvdev->swap_axes) {
int tmp = v[0];
v[0] = v[1];
v[1] = tmp;
}
if (pEvdev->invert_x)
v[0] = (pEvdev->absinfo[ABS_X].maximum - v[0] +
pEvdev->absinfo[ABS_X].minimum);
if (pEvdev->invert_y)
v[1] = (pEvdev->absinfo[ABS_Y].maximum - v[1] +
pEvdev->absinfo[ABS_Y].minimum);
xf86PostMotionEventP(pInfo->dev, TRUE, 0, pEvdev->num_vals, v);
}
}
#define TestBit(bit, array) ((array[(bit) / LONG_BITS]) & (1L << ((bit) % LONG_BITS)))
static void
EvdevPtrCtrlProc(DeviceIntPtr device, PtrCtrl *ctrl)
{
/* Nothing to do, dix handles all settings */
}
static KeySym map[] = {
/* 0x00 */ NoSymbol, NoSymbol,
/* 0x01 */ XK_Escape, NoSymbol,
/* 0x02 */ XK_1, XK_exclam,
/* 0x03 */ XK_2, XK_at,
/* 0x04 */ XK_3, XK_numbersign,
/* 0x05 */ XK_4, XK_dollar,
/* 0x06 */ XK_5, XK_percent,
/* 0x07 */ XK_6, XK_asciicircum,
/* 0x08 */ XK_7, XK_ampersand,
/* 0x09 */ XK_8, XK_asterisk,
/* 0x0a */ XK_9, XK_parenleft,
/* 0x0b */ XK_0, XK_parenright,
/* 0x0c */ XK_minus, XK_underscore,
/* 0x0d */ XK_equal, XK_plus,
/* 0x0e */ XK_BackSpace, NoSymbol,
/* 0x0f */ XK_Tab, XK_ISO_Left_Tab,
/* 0x10 */ XK_Q, NoSymbol,
/* 0x11 */ XK_W, NoSymbol,
/* 0x12 */ XK_E, NoSymbol,
/* 0x13 */ XK_R, NoSymbol,
/* 0x14 */ XK_T, NoSymbol,
/* 0x15 */ XK_Y, NoSymbol,
/* 0x16 */ XK_U, NoSymbol,
/* 0x17 */ XK_I, NoSymbol,
/* 0x18 */ XK_O, NoSymbol,
/* 0x19 */ XK_P, NoSymbol,
/* 0x1a */ XK_bracketleft, XK_braceleft,
/* 0x1b */ XK_bracketright,XK_braceright,
/* 0x1c */ XK_Return, NoSymbol,
/* 0x1d */ XK_Control_L, NoSymbol,
/* 0x1e */ XK_A, NoSymbol,
/* 0x1f */ XK_S, NoSymbol,
/* 0x20 */ XK_D, NoSymbol,
/* 0x21 */ XK_F, NoSymbol,
/* 0x22 */ XK_G, NoSymbol,
/* 0x23 */ XK_H, NoSymbol,
/* 0x24 */ XK_J, NoSymbol,
/* 0x25 */ XK_K, NoSymbol,
/* 0x26 */ XK_L, NoSymbol,
/* 0x27 */ XK_semicolon, XK_colon,
/* 0x28 */ XK_quoteright, XK_quotedbl,
/* 0x29 */ XK_quoteleft, XK_asciitilde,
/* 0x2a */ XK_Shift_L, NoSymbol,
/* 0x2b */ XK_backslash, XK_bar,
/* 0x2c */ XK_Z, NoSymbol,
/* 0x2d */ XK_X, NoSymbol,
/* 0x2e */ XK_C, NoSymbol,
/* 0x2f */ XK_V, NoSymbol,
/* 0x30 */ XK_B, NoSymbol,
/* 0x31 */ XK_N, NoSymbol,
/* 0x32 */ XK_M, NoSymbol,
/* 0x33 */ XK_comma, XK_less,
/* 0x34 */ XK_period, XK_greater,
/* 0x35 */ XK_slash, XK_question,
/* 0x36 */ XK_Shift_R, NoSymbol,
/* 0x37 */ XK_KP_Multiply, NoSymbol,
/* 0x38 */ XK_Alt_L, XK_Meta_L,
/* 0x39 */ XK_space, NoSymbol,
/* 0x3a */ XK_Caps_Lock, NoSymbol,
/* 0x3b */ XK_F1, NoSymbol,
/* 0x3c */ XK_F2, NoSymbol,
/* 0x3d */ XK_F3, NoSymbol,
/* 0x3e */ XK_F4, NoSymbol,
/* 0x3f */ XK_F5, NoSymbol,
/* 0x40 */ XK_F6, NoSymbol,
/* 0x41 */ XK_F7, NoSymbol,
/* 0x42 */ XK_F8, NoSymbol,
/* 0x43 */ XK_F9, NoSymbol,
/* 0x44 */ XK_F10, NoSymbol,
/* 0x45 */ XK_Num_Lock, NoSymbol,
/* 0x46 */ XK_Scroll_Lock, NoSymbol,
/* These KP keys should have the KP_7 keysyms in the numlock
* modifer... ? */
/* 0x47 */ XK_KP_Home, XK_KP_7,
/* 0x48 */ XK_KP_Up, XK_KP_8,
/* 0x49 */ XK_KP_Prior, XK_KP_9,
/* 0x4a */ XK_KP_Subtract, NoSymbol,
/* 0x4b */ XK_KP_Left, XK_KP_4,
/* 0x4c */ XK_KP_Begin, XK_KP_5,
/* 0x4d */ XK_KP_Right, XK_KP_6,
/* 0x4e */ XK_KP_Add, NoSymbol,
/* 0x4f */ XK_KP_End, XK_KP_1,
/* 0x50 */ XK_KP_Down, XK_KP_2,
/* 0x51 */ XK_KP_Next, XK_KP_3,
/* 0x52 */ XK_KP_Insert, XK_KP_0,
/* 0x53 */ XK_KP_Delete, XK_KP_Decimal,
/* 0x54 */ NoSymbol, NoSymbol,
/* 0x55 */ XK_F13, NoSymbol,
/* 0x56 */ XK_less, XK_greater,
/* 0x57 */ XK_F11, NoSymbol,
/* 0x58 */ XK_F12, NoSymbol,
/* 0x59 */ XK_F14, NoSymbol,
/* 0x5a */ XK_F15, NoSymbol,
/* 0x5b */ XK_F16, NoSymbol,
/* 0x5c */ XK_F17, NoSymbol,
/* 0x5d */ XK_F18, NoSymbol,
/* 0x5e */ XK_F19, NoSymbol,
/* 0x5f */ XK_F20, NoSymbol,
/* 0x60 */ XK_KP_Enter, NoSymbol,
/* 0x61 */ XK_Control_R, NoSymbol,
/* 0x62 */ XK_KP_Divide, NoSymbol,
/* 0x63 */ XK_Print, XK_Sys_Req,
/* 0x64 */ XK_Alt_R, XK_Meta_R,
/* 0x65 */ NoSymbol, NoSymbol, /* KEY_LINEFEED */
/* 0x66 */ XK_Home, NoSymbol,
/* 0x67 */ XK_Up, NoSymbol,
/* 0x68 */ XK_Prior, NoSymbol,
/* 0x69 */ XK_Left, NoSymbol,
/* 0x6a */ XK_Right, NoSymbol,
/* 0x6b */ XK_End, NoSymbol,
/* 0x6c */ XK_Down, NoSymbol,
/* 0x6d */ XK_Next, NoSymbol,
/* 0x6e */ XK_Insert, NoSymbol,
/* 0x6f */ XK_Delete, NoSymbol,
/* 0x70 */ NoSymbol, NoSymbol, /* KEY_MACRO */
/* 0x71 */ NoSymbol, NoSymbol,
/* 0x72 */ NoSymbol, NoSymbol,
/* 0x73 */ NoSymbol, NoSymbol,
/* 0x74 */ NoSymbol, NoSymbol,
/* 0x75 */ XK_KP_Equal, NoSymbol,
/* 0x76 */ NoSymbol, NoSymbol,
/* 0x77 */ NoSymbol, NoSymbol,
/* 0x78 */ XK_F21, NoSymbol,
/* 0x79 */ XK_F22, NoSymbol,
/* 0x7a */ XK_F23, NoSymbol,
/* 0x7b */ XK_F24, NoSymbol,
/* 0x7c */ XK_KP_Separator, NoSymbol,
/* 0x7d */ XK_Meta_L, NoSymbol,
/* 0x7e */ XK_Meta_R, NoSymbol,
/* 0x7f */ XK_Multi_key, NoSymbol,
/* 0x80 */ NoSymbol, NoSymbol,
/* 0x81 */ NoSymbol, NoSymbol,
/* 0x82 */ NoSymbol, NoSymbol,
/* 0x83 */ NoSymbol, NoSymbol,
/* 0x84 */ NoSymbol, NoSymbol,
/* 0x85 */ NoSymbol, NoSymbol,
/* 0x86 */ NoSymbol, NoSymbol,
/* 0x87 */ NoSymbol, NoSymbol,
/* 0x88 */ NoSymbol, NoSymbol,
/* 0x89 */ NoSymbol, NoSymbol,
/* 0x8a */ NoSymbol, NoSymbol,
/* 0x8b */ NoSymbol, NoSymbol,
/* 0x8c */ NoSymbol, NoSymbol,
/* 0x8d */ NoSymbol, NoSymbol,
/* 0x8e */ NoSymbol, NoSymbol,
/* 0x8f */ NoSymbol, NoSymbol,
/* 0x90 */ NoSymbol, NoSymbol,
/* 0x91 */ NoSymbol, NoSymbol,
/* 0x92 */ NoSymbol, NoSymbol,
/* 0x93 */ NoSymbol, NoSymbol,
/* 0x94 */ NoSymbol, NoSymbol,
/* 0x95 */ NoSymbol, NoSymbol,
/* 0x96 */ NoSymbol, NoSymbol,
/* 0x97 */ NoSymbol, NoSymbol,
/* 0x98 */ NoSymbol, NoSymbol,
/* 0x99 */ NoSymbol, NoSymbol,
/* 0x9a */ NoSymbol, NoSymbol,
/* 0x9b */ NoSymbol, NoSymbol,
/* 0x9c */ NoSymbol, NoSymbol,
/* 0x9d */ NoSymbol, NoSymbol,
/* 0x9e */ NoSymbol, NoSymbol,
/* 0x9f */ NoSymbol, NoSymbol,
/* 0xa0 */ NoSymbol, NoSymbol,
/* 0xa1 */ NoSymbol, NoSymbol,
/* 0xa2 */ NoSymbol, NoSymbol,
/* 0xa3 */ NoSymbol, NoSymbol,
/* 0xa4 */ NoSymbol, NoSymbol,
/* 0xa5 */ NoSymbol, NoSymbol,
/* 0xa6 */ NoSymbol, NoSymbol,
/* 0xa7 */ NoSymbol, NoSymbol,
/* 0xa8 */ NoSymbol, NoSymbol,
/* 0xa9 */ NoSymbol, NoSymbol,
/* 0xaa */ NoSymbol, NoSymbol,
/* 0xab */ NoSymbol, NoSymbol,
/* 0xac */ NoSymbol, NoSymbol,
/* 0xad */ NoSymbol, NoSymbol,
/* 0xae */ NoSymbol, NoSymbol,
/* 0xaf */ NoSymbol, NoSymbol,
/* 0xb0 */ NoSymbol, NoSymbol,
/* 0xb1 */ NoSymbol, NoSymbol,
/* 0xb2 */ NoSymbol, NoSymbol,
/* 0xb3 */ NoSymbol, NoSymbol,
/* 0xb4 */ NoSymbol, NoSymbol,
/* 0xb5 */ NoSymbol, NoSymbol,
/* 0xb6 */ NoSymbol, NoSymbol,
/* 0xb7 */ NoSymbol, NoSymbol,
/* 0xb8 */ NoSymbol, NoSymbol,
/* 0xb9 */ NoSymbol, NoSymbol,
/* 0xba */ NoSymbol, NoSymbol,
/* 0xbb */ NoSymbol, NoSymbol,
/* 0xbc */ NoSymbol, NoSymbol,
/* 0xbd */ NoSymbol, NoSymbol,
/* 0xbe */ NoSymbol, NoSymbol,
/* 0xbf */ NoSymbol, NoSymbol,
/* 0xc0 */ NoSymbol, NoSymbol,
/* 0xc1 */ NoSymbol, NoSymbol,
/* 0xc2 */ NoSymbol, NoSymbol,
/* 0xc3 */ NoSymbol, NoSymbol,
/* 0xc4 */ NoSymbol, NoSymbol,
/* 0xc5 */ NoSymbol, NoSymbol,
/* 0xc6 */ NoSymbol, NoSymbol,
/* 0xc7 */ NoSymbol, NoSymbol,
/* 0xc8 */ NoSymbol, NoSymbol,
/* 0xc9 */ NoSymbol, NoSymbol,
/* 0xca */ NoSymbol, NoSymbol,
/* 0xcb */ NoSymbol, NoSymbol,
/* 0xcc */ NoSymbol, NoSymbol,
/* 0xcd */ NoSymbol, NoSymbol,
/* 0xce */ NoSymbol, NoSymbol,
/* 0xcf */ NoSymbol, NoSymbol,
/* 0xd0 */ NoSymbol, NoSymbol,
/* 0xd1 */ NoSymbol, NoSymbol,
/* 0xd2 */ NoSymbol, NoSymbol,
/* 0xd3 */ NoSymbol, NoSymbol,
/* 0xd4 */ NoSymbol, NoSymbol,
/* 0xd5 */ NoSymbol, NoSymbol,
/* 0xd6 */ NoSymbol, NoSymbol,
/* 0xd7 */ NoSymbol, NoSymbol,
/* 0xd8 */ NoSymbol, NoSymbol,
/* 0xd9 */ NoSymbol, NoSymbol,
/* 0xda */ NoSymbol, NoSymbol,
/* 0xdb */ NoSymbol, NoSymbol,
/* 0xdc */ NoSymbol, NoSymbol,
/* 0xdd */ NoSymbol, NoSymbol,
/* 0xde */ NoSymbol, NoSymbol,
/* 0xdf */ NoSymbol, NoSymbol,
/* 0xe0 */ NoSymbol, NoSymbol,
/* 0xe1 */ NoSymbol, NoSymbol,
/* 0xe2 */ NoSymbol, NoSymbol,
/* 0xe3 */ NoSymbol, NoSymbol,
/* 0xe4 */ NoSymbol, NoSymbol,
/* 0xe5 */ NoSymbol, NoSymbol,
/* 0xe6 */ NoSymbol, NoSymbol,
/* 0xe7 */ NoSymbol, NoSymbol,
/* 0xe8 */ NoSymbol, NoSymbol,
/* 0xe9 */ NoSymbol, NoSymbol,
/* 0xea */ NoSymbol, NoSymbol,
/* 0xeb */ NoSymbol, NoSymbol,
/* 0xec */ NoSymbol, NoSymbol,
/* 0xed */ NoSymbol, NoSymbol,
/* 0xee */ NoSymbol, NoSymbol,
/* 0xef */ NoSymbol, NoSymbol,
/* 0xf0 */ NoSymbol, NoSymbol,
/* 0xf1 */ NoSymbol, NoSymbol,
/* 0xf2 */ NoSymbol, NoSymbol,
/* 0xf3 */ NoSymbol, NoSymbol,
/* 0xf4 */ NoSymbol, NoSymbol,
/* 0xf5 */ NoSymbol, NoSymbol,
/* 0xf6 */ NoSymbol, NoSymbol,
/* 0xf7 */ NoSymbol, NoSymbol,
};
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)
{
InputInfoPtr pInfo;
KeySymsRec keySyms;
CARD8 modMap[MAP_LENGTH];
KeySym sym;
int i, j;
EvdevPtr pEvdev;
static struct { KeySym keysym; CARD8 mask; } modifiers[] = {
{ XK_Shift_L, ShiftMask },
{ XK_Shift_R, ShiftMask },
{ XK_Control_L, ControlMask },
{ XK_Control_R, ControlMask },
{ XK_Caps_Lock, LockMask },
{ XK_Alt_L, AltMask },
{ XK_Alt_R, AltMask },
{ XK_Meta_L, Mod4Mask },
{ XK_Meta_R, Mod4Mask },
{ XK_Num_Lock, NumLockMask },
{ XK_Scroll_Lock, ScrollLockMask },
{ XK_Mode_switch, AltLangMask }
};
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
/* Compute the modifier map */
memset(modMap, 0, sizeof modMap);
for (i = 0; i < ArrayLength(map) / GLYPHS_PER_KEY; i++) {
sym = map[i * GLYPHS_PER_KEY];
for (j = 0; j < ArrayLength(modifiers); j++) {
if (modifiers[j].keysym == sym)
modMap[i + MIN_KEYCODE] = modifiers[j].mask;
}
}
keySyms.map = map;
keySyms.mapWidth = GLYPHS_PER_KEY;
keySyms.minKeyCode = MIN_KEYCODE;
keySyms.maxKeyCode = MIN_KEYCODE + ArrayLength(map) / GLYPHS_PER_KEY - 1;
/* sorry, no rules change allowed for you */
xf86ReplaceStrOption(pInfo->options, "xkb_rules", "evdev");
SetXkbOption(pInfo, "xkb_rules", &pEvdev->rmlvo.rules);
SetXkbOption(pInfo, "xkb_model", &pEvdev->rmlvo.model);
if (!pEvdev->rmlvo.model)
SetXkbOption(pInfo, "XkbModel", &pEvdev->rmlvo.model);
SetXkbOption(pInfo, "xkb_layout", &pEvdev->rmlvo.layout);
if (!pEvdev->rmlvo.layout)
SetXkbOption(pInfo, "XkbLayout", &pEvdev->rmlvo.layout);
SetXkbOption(pInfo, "xkb_variant", &pEvdev->rmlvo.variant);
if (!pEvdev->rmlvo.variant)
SetXkbOption(pInfo, "XkbVariant", &pEvdev->rmlvo.variant);
SetXkbOption(pInfo, "xkb_options", &pEvdev->rmlvo.options);
if (!pEvdev->rmlvo.options)
SetXkbOption(pInfo, "XkbOptions", &pEvdev->rmlvo.options);
#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 5
if (!InitKeyboardDeviceStruct(device, &pEvdev->rmlvo, NULL, EvdevKbdCtrl))
return !Success;
#else
XkbSetRulesDflts(pEvdev->rmlvo.rules, pEvdev->rmlvo.model,
pEvdev->rmlvo.layout, pEvdev->rmlvo.variant,
pEvdev->rmlvo.options);
if (!XkbInitKeyboardDeviceStruct(device, &pEvdev->xkbnames,
&keySyms, modMap, NULL,
EvdevKbdCtrl))
return !Success;
#endif
pInfo->flags |= XI86_KEYBOARD_CAPABLE;
return Success;
}
static int
EvdevAddAbsClass(DeviceIntPtr device)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
int num_axes, axis, i = 0;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
if (!TestBit(EV_ABS, pEvdev->bitmask))
return !Success;
num_axes = CountBits(pEvdev->abs_bitmask, NLONGS(ABS_MAX));
if (num_axes < 1)
return !Success;
pEvdev->num_vals = num_axes;
memset(pEvdev->vals, 0, num_axes * sizeof(int));
memset(pEvdev->old_vals, -1, num_axes * sizeof(int));
if (!InitValuatorClassDeviceStruct(device, num_axes,
#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3
GetMotionHistory,
#endif
GetMotionHistorySize(), Absolute))
return !Success;
for (axis = ABS_X; axis <= ABS_MAX; axis++) {
pEvdev->axis_map[axis] = -1;
if (!TestBit(axis, pEvdev->abs_bitmask))
continue;
pEvdev->axis_map[axis] = i;
xf86InitValuatorAxisStruct(device, i,
pEvdev->absinfo[axis].minimum,
pEvdev->absinfo[axis].maximum,
10000, 0, 10000);
xf86InitValuatorDefaults(device, i);
pEvdev->old_vals[i] = -1;
i++;
}
if (!InitPtrFeedbackClassDeviceStruct(device, EvdevPtrCtrlProc))
return !Success;
if ((TestBit(ABS_X, pEvdev->abs_bitmask) &&
TestBit(ABS_Y, pEvdev->abs_bitmask)) ||
(TestBit(ABS_RX, pEvdev->abs_bitmask) &&
TestBit(ABS_RY, pEvdev->abs_bitmask)) ||
(TestBit(ABS_HAT0X, pEvdev->abs_bitmask) &&
TestBit(ABS_HAT0Y, pEvdev->abs_bitmask)) ||
(TestBit(ABS_HAT1X, pEvdev->abs_bitmask) &&
TestBit(ABS_HAT1Y, pEvdev->abs_bitmask)) ||
(TestBit(ABS_HAT2X, pEvdev->abs_bitmask) &&
TestBit(ABS_HAT2Y, pEvdev->abs_bitmask)) ||
(TestBit(ABS_HAT3X, pEvdev->abs_bitmask) &&
TestBit(ABS_HAT3Y, pEvdev->abs_bitmask)) ||
(TestBit(ABS_TILT_X, pEvdev->abs_bitmask) &&
TestBit(ABS_TILT_Y, pEvdev->abs_bitmask)))
pInfo->flags |= XI86_POINTER_CAPABLE;
return Success;
}
static int
EvdevAddRelClass(DeviceIntPtr device)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
int num_axes, axis, i = 0;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
if (!TestBit(EV_REL, pEvdev->bitmask))
return !Success;
num_axes = CountBits(pEvdev->rel_bitmask, NLONGS(REL_MAX));
if (num_axes < 1)
return !Success;
pEvdev->num_vals = num_axes;
memset(pEvdev->vals, 0, num_axes * sizeof(int));
if (!InitValuatorClassDeviceStruct(device, num_axes,
#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3
GetMotionHistory,
#endif
GetMotionHistorySize(), Relative))
return !Success;
for (axis = REL_X; axis <= REL_MAX; axis++)
{
pEvdev->axis_map[axis] = -1;
if (!TestBit(axis, pEvdev->rel_bitmask))
continue;
pEvdev->axis_map[axis] = i;
xf86InitValuatorAxisStruct(device, i, -1, -1, 1, 0, 1);
xf86InitValuatorDefaults(device, i);
i++;
}
if (!InitPtrFeedbackClassDeviceStruct(device, EvdevPtrCtrlProc))
return !Success;
pInfo->flags |= XI86_POINTER_CAPABLE;
return Success;
}
static int
EvdevAddButtonClass(DeviceIntPtr device)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
/* FIXME: count number of actual buttons */
if (!InitButtonClassDeviceStruct(device, ArrayLength(pEvdev->btnmap),
pEvdev->btnmap))
return !Success;
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 *s = " ";
int btn = 0;
xf86Msg(X_CONFIG, "%s: ButtonMapping '%s'\n", pInfo->name, mapping);
while (s && *s != '\0' && nbuttons < EVDEV_MAXBUTTONS)
{
btn = strtol(mapping, &s, 10);
if (s == mapping || btn < 0 || btn > EVDEV_MAXBUTTONS)
{
xf86Msg(X_ERROR,
"%s: ... Invalid button mapping. Using defaults\n",
pInfo->name);
nbuttons = 1; /* ensure defaults start at 1 */
break;
}
pEvdev->btnmap[nbuttons++] = btn;
mapping = s;
}
}
for (i = nbuttons; i < ArrayLength(pEvdev->btnmap); i++)
pEvdev->btnmap[i] = i;
}
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. Reason
Reason being 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 axis.
So unless you have a small screen, you won't be enjoying it much.
FIXME: somebody volunteer to fix this.
*/
if (pEvdev->flags & EVDEV_RELATIVE_EVENTS)
EvdevAddRelClass(device);
else if (pEvdev->flags & EVDEV_ABSOLUTE_EVENTS)
EvdevAddAbsClass(device);
#ifdef HAVE_PROPERTIES
/* 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);
EvdevWheelEmuInitProperty(device);
EvdevDragLockInitProperty(device);
#endif
return Success;
}
/**
* Init all extras (wheel emulation, etc.) and grab the device.
*
* Coming from a resume, the grab may fail with ENODEV. In this case, we set a
* timer to wake up and try to reopen the device later.
*/
static int
EvdevOn(DeviceIntPtr device)
{
InputInfoPtr pInfo;
EvdevPtr pEvdev;
int rc = 0;
pInfo = device->public.devicePrivate;
pEvdev = pInfo->private;
if (pInfo->fd != -1 && pEvdev->grabDevice &&
(rc = ioctl(pInfo->fd, EVIOCGRAB, (void *)1)))
{
xf86Msg(X_WARNING, "%s: Grab failed (%s)\n", pInfo->name,
strerror(errno));
/* ENODEV - device has disappeared after resume */
if (rc && errno == ENODEV)
{
close(pInfo->fd);
pInfo->fd = -1;
}
}
if (pInfo->fd == -1)
{
pEvdev->reopen_left = pEvdev->reopen_attempts;
pEvdev->reopen_timer = TimerSet(NULL, 0, 100, EvdevReopenTimer, pInfo);
} else
{
pEvdev->min_maj = EvdevGetMajorMinor(pInfo);
if (EvdevIsDuplicate(pInfo))
{
xf86Msg(X_WARNING, "%s: Refusing to enable duplicate device.\n",
pInfo->name);
return !Success;
}
xf86FlushInput(pInfo->fd);
xf86AddEnabledDevice(pInfo);
EvdevMBEmuOn(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);
if (pInfo->fd != -1)
{
if (pEvdev->grabDevice && ioctl(pInfo->fd, EVIOCGRAB, (void *)0))
xf86Msg(X_WARNING, "%s: Release failed (%s)\n", pInfo->name,
strerror(errno));
xf86RemoveEnabledDevice(pInfo);
close(pInfo->fd);
pInfo->fd = -1;
}
pEvdev->min_maj = 0;
pEvdev->flags &= ~EVDEV_INITIALIZED;
device->public.on = FALSE;
if (pEvdev->reopen_timer)
{
TimerFree(pEvdev->reopen_timer);
pEvdev->reopen_timer = NULL;
}
break;
case DEVICE_CLOSE:
xf86Msg(X_INFO, "%s: Close\n", pInfo->name);
if (pInfo->fd != -1) {
close(pInfo->fd);
pInfo->fd = -1;
}
EvdevRemoveDevice(pInfo);
pEvdev->min_maj = 0;
break;
}
return Success;
}
/**
* Get as much information as we can from the fd and cache it.
* If compare is True, then the information retrieved will be compared to the
* one already cached. If the information does not match, then this function
* returns an error.
*
* @return Success if the information was cached, or !Success otherwise.
*/
static int
EvdevCacheCompare(InputInfoPtr pInfo, BOOL compare)
{
EvdevPtr pEvdev = pInfo->private;
int i;
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};
struct input_absinfo absinfo[ABS_CNT];
if (ioctl(pInfo->fd,
EVIOCGNAME(sizeof(name) - 1), name) < 0) {
xf86Msg(X_ERROR, "ioctl EVIOCGNAME failed: %s\n", strerror(errno));
goto error;
}
if (compare && strcmp(pEvdev->name, name)) {
xf86Msg(X_ERROR, "%s: device name changed: %s != %s\n", pInfo->name, pEvdev->name, name);
goto error;
}
if (ioctl(pInfo->fd,
EVIOCGBIT(0, sizeof(bitmask)), bitmask) < 0) {
xf86Msg(X_ERROR, "%s: ioctl EVIOCGBIT failed: %s\n", pInfo->name, strerror(errno));
goto error;
}
if (compare && memcmp(pEvdev->bitmask, bitmask, sizeof(bitmask))) {
xf86Msg(X_ERROR, "%s: device bitmask has changed\n", pInfo->name);
goto error;
}
if (ioctl(pInfo->fd,
EVIOCGBIT(EV_REL, sizeof(rel_bitmask)), rel_bitmask) < 0) {
xf86Msg(X_ERROR, "%s: ioctl EVIOCGBIT failed: %s\n", pInfo->name, strerror(errno));
goto error;
}
if (compare && memcmp(pEvdev->rel_bitmask, rel_bitmask, sizeof(rel_bitmask))) {
xf86Msg(X_ERROR, "%s: device rel_bitmask has changed\n", pInfo->name);
goto error;
}
if (ioctl(pInfo->fd,
EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask) < 0) {
xf86Msg(X_ERROR, "%s: ioctl EVIOCGBIT failed: %s\n", pInfo->name, strerror(errno));
goto error;
}
if (compare && memcmp(pEvdev->abs_bitmask, abs_bitmask, sizeof(abs_bitmask))) {
xf86Msg(X_ERROR, "%s: device abs_bitmask has changed\n", pInfo->name);
goto error;
}
if (ioctl(pInfo->fd,
EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask) < 0) {
xf86Msg(X_ERROR, "%s: ioctl EVIOCGBIT failed: %s\n", pInfo->name, strerror(errno));
goto error;
}
if (compare && memcmp(pEvdev->key_bitmask, key_bitmask, sizeof(key_bitmask))) {
xf86Msg(X_ERROR, "%s: device key_bitmask has changed\n", pInfo->name);
goto error;
}
if (ioctl(pInfo->fd,
EVIOCGBIT(EV_LED, sizeof(led_bitmask)), led_bitmask) < 0) {
xf86Msg(X_ERROR, "%s: ioctl EVIOCGBIT failed: %s\n", pInfo->name, strerror(errno));
goto error;
}
if (compare && memcmp(pEvdev->led_bitmask, led_bitmask, sizeof(led_bitmask))) {
xf86Msg(X_ERROR, "%s: device led_bitmask has changed\n", pInfo->name);
goto error;
}
memset(absinfo, 0, sizeof(absinfo));
for (i = ABS_X; i <= ABS_MAX; i++)
{
if (TestBit(i, abs_bitmask))
{
if (ioctl(pInfo->fd, EVIOCGABS(i), &absinfo[i]) < 0) {
xf86Msg(X_ERROR, "%s: ioctl EVIOCGABS failed: %s\n", pInfo->name, strerror(errno));
goto error;
}
/* ignore current position (value) in comparison (bug #19819) */
absinfo[i].value = pEvdev->absinfo[i].value;
}
}
if (compare && memcmp(pEvdev->absinfo, absinfo, sizeof(absinfo))) {
xf86Msg(X_ERROR, "%s: device absinfo has changed\n", pInfo->name);
goto error;
}
/* cache info */
if (!compare)
{
strcpy(pEvdev->name, name);
memcpy(pEvdev->bitmask, bitmask, sizeof(bitmask));
memcpy(pEvdev->key_bitmask, key_bitmask, sizeof(key_bitmask));
memcpy(pEvdev->rel_bitmask, rel_bitmask, sizeof(rel_bitmask));
memcpy(pEvdev->abs_bitmask, abs_bitmask, sizeof(abs_bitmask));
memcpy(pEvdev->led_bitmask, led_bitmask, sizeof(led_bitmask));
memcpy(pEvdev->absinfo, absinfo, sizeof(absinfo));
}
return Success;
error:
return !Success;
}
static int
EvdevProbe(InputInfoPtr pInfo)
{
int i, has_axes, has_keys, num_buttons, has_scroll;
int kernel24 = 0;
EvdevPtr pEvdev = pInfo->private;
if (pEvdev->grabDevice && ioctl(pInfo->fd, EVIOCGRAB, (void *)1)) {
if (errno == EINVAL) {
/* keyboards are unsafe in 2.4 */
kernel24 = 1;
pEvdev->grabDevice = 0;
} else {
xf86Msg(X_ERROR, "Grab failed. Device already configured?\n");
return 1;
}
} else if (pEvdev->grabDevice) {
ioctl(pInfo->fd, EVIOCGRAB, (void *)0);
}
has_axes = FALSE;
has_keys = FALSE;
has_scroll = FALSE;
num_buttons = 0;
/* count all buttons */
for (i = BTN_MISC; i < BTN_JOYSTICK; i++)
{
if (TestBit(i, pEvdev->key_bitmask))
num_buttons++;
}
if (num_buttons)
{
pEvdev->flags |= EVDEV_BUTTON_EVENTS;
pEvdev->buttons = num_buttons;
xf86Msg(X_INFO, "%s: Found %d mouse buttons\n", pInfo->name,
num_buttons);
}
if (TestBit(REL_X, pEvdev->rel_bitmask) &&
TestBit(REL_Y, pEvdev->rel_bitmask)) {
xf86Msg(X_INFO, "%s: Found x and y relative axes\n", pInfo->name);
pEvdev->flags |= EVDEV_RELATIVE_EVENTS;
has_axes = TRUE;
}
if (TestBit(REL_WHEEL, pEvdev->rel_bitmask) ||
TestBit(REL_HWHEEL, pEvdev->rel_bitmask)) {
xf86Msg(X_INFO, "%s: Found scroll wheel(s)\n", pInfo->name);
has_scroll = TRUE;
}
if (TestBit(ABS_X, pEvdev->abs_bitmask) &&
TestBit(ABS_Y, pEvdev->abs_bitmask)) {
xf86Msg(X_INFO, "%s: Found x and y absolute axes\n", pInfo->name);
pEvdev->flags |= EVDEV_ABSOLUTE_EVENTS;
if (!TestBit(ABS_PRESSURE, pEvdev->abs_bitmask) &&
TestBit(BTN_TOUCH, pEvdev->key_bitmask)) {
if (num_buttons) {
xf86Msg(X_INFO, "%s: Found absolute touchpad\n", pInfo->name);
pEvdev->flags |= EVDEV_TOUCHPAD;
memset(pEvdev->old_vals, -1, sizeof(int) * pEvdev->num_vals);
} else {
xf86Msg(X_INFO, "%s: Found absolute touchscreen\n", pInfo->name);
pEvdev->flags |= EVDEV_TOUCHSCREEN;
pEvdev->flags |= EVDEV_BUTTON_EVENTS;
}
}
has_axes = TRUE;
}
for (i = 0; i < BTN_MISC; i++)
if (TestBit(i, pEvdev->key_bitmask))
break;
if (i < BTN_MISC) {
xf86Msg(X_INFO, "%s: Found keys\n", pInfo->name);
pEvdev->flags |= EVDEV_KEYBOARD_EVENTS;
has_keys = TRUE;
}
if (has_axes && num_buttons) {
pInfo->flags |= XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS |
XI86_CONFIGURED;
if (TestBit(ABS_PRESSURE, pEvdev->abs_bitmask)) {
xf86Msg(X_INFO, "%s: Configuring as tablet\n", pInfo->name);
pInfo->type_name = XI_TABLET;
} else {
xf86Msg(X_INFO, "%s: Configuring as mouse\n", pInfo->name);
pInfo->type_name = XI_MOUSE;
}
}
if (pEvdev->flags & EVDEV_TOUCHSCREEN) {
xf86Msg(X_INFO, "%s: Configuring as touchscreen\n", pInfo->name);
pInfo->type_name = XI_TOUCHSCREEN;
pInfo->flags |= XI86_POINTER_CAPABLE | XI86_SEND_DRAG_EVENTS |
XI86_CONFIGURED;
}
if (has_keys) {
if (kernel24) {
xf86Msg(X_INFO, "%s: Kernel < 2.6 is too old, ignoring keyboard\n",
pInfo->name);
} else {
xf86Msg(X_INFO, "%s: Configuring as keyboard\n", pInfo->name);
pInfo->flags |= XI86_KEYBOARD_CAPABLE | XI86_CONFIGURED;
pInfo->type_name = XI_KEYBOARD;
}
}
if (has_scroll && (pInfo->flags & XI86_CONFIGURED) &&
(pInfo->flags & XI86_POINTER_CAPABLE) == 0)
{
xf86Msg(X_INFO, "%s: Adding scrollwheel support\n", pInfo->name);
pInfo->flags |= XI86_POINTER_CAPABLE;
pEvdev->flags |= EVDEV_BUTTON_EVENTS;
pEvdev->flags |= EVDEV_RELATIVE_EVENTS;
}
if ((pInfo->flags & XI86_CONFIGURED) == 0) {
xf86Msg(X_WARNING, "%s: Don't know how to use device\n",
pInfo->name);
return 1;
}
return 0;
}
static InputInfoPtr
EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
{
InputInfoPtr pInfo;
const char *device;
EvdevPtr pEvdev;
if (!(pInfo = xf86AllocateInput(drv, 0)))
return NULL;
/* Initialise the InputInfoRec. */
pInfo->name = dev->identifier;
pInfo->flags = 0;
pInfo->type_name = "UNKNOWN";
pInfo->device_control = EvdevProc;
pInfo->read_input = EvdevReadInput;
pInfo->history_size = 0;
pInfo->control_proc = NULL;
pInfo->close_proc = NULL;
pInfo->switch_mode = NULL;
pInfo->conversion_proc = NULL;
pInfo->reverse_conversion_proc = NULL;
pInfo->dev = NULL;
pInfo->private_flags = 0;
pInfo->always_core_feedback = NULL;
pInfo->conf_idev = dev;
if (!(pEvdev = xcalloc(sizeof(EvdevRec), 1)))
return pInfo;
pInfo->private = pEvdev;
xf86CollectInputOptions(pInfo, evdevDefaults, NULL);
xf86ProcessCommonOptions(pInfo, pInfo->options);
/*
* We initialize pEvdev->tool to 1 so that device that doesn't use
* proximity will still report events.
*/
pEvdev->tool = 1;
device = xf86CheckStrOption(dev->commonOptions, "Device", NULL);
if (!device) {
xf86Msg(X_ERROR, "%s: No device specified.\n", pInfo->name);
xf86DeleteInput(pInfo, 0);
return NULL;
}
pEvdev->device = device;
xf86Msg(X_CONFIG, "%s: Device: \"%s\"\n", pInfo->name, device);
do {
pInfo->fd = open(device, O_RDWR | O_NONBLOCK, 0);
} while (pInfo->fd < 0 && errno == EINTR);
if (pInfo->fd < 0) {
xf86Msg(X_ERROR, "Unable to open evdev device \"%s\".\n", device);
xf86DeleteInput(pInfo, 0);
return NULL;
}
/* Check major/minor of device node to avoid adding duplicate devices. */
pEvdev->min_maj = EvdevGetMajorMinor(pInfo);
if (EvdevIsDuplicate(pInfo))
{
xf86Msg(X_WARNING, "%s: device file already in use. Ignoring.\n",
pInfo->name);
close(pInfo->fd);
xf86DeleteInput(pInfo, 0);
return NULL;
}
pEvdev->reopen_attempts = xf86SetIntOption(pInfo->options, "ReopenAttempts", 10);
pEvdev->invert_x = xf86SetBoolOption(pInfo->options, "InvertX", FALSE);
pEvdev->invert_y = xf86SetBoolOption(pInfo->options, "InvertY", FALSE);
pEvdev->swap_axes = xf86SetBoolOption(pInfo->options, "SwapAxes", FALSE);
/* 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(dev->commonOptions, "GrabDevice", 0);
EvdevInitButtonMapping(pInfo);
if (EvdevCacheCompare(pInfo, FALSE) ||
EvdevProbe(pInfo)) {
close(pInfo->fd);
xf86DeleteInput(pInfo, 0);
return NULL;
}
EvdevAddDevice(pInfo);
if (pEvdev->flags & EVDEV_BUTTON_EVENTS)
{
EvdevMBEmuPreInit(pInfo);
EvdevWheelEmuPreInit(pInfo);
EvdevDragLockPreInit(pInfo);
}
return pInfo;
}
_X_EXPORT InputDriverRec EVDEV = {
1,
"evdev",
NULL,
EvdevPreInit,
NULL,
NULL,
0
};
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)
{
unsigned int button = 0;
switch(code) {
case BTN_LEFT:
button = 1;
break;
case BTN_RIGHT:
button = 3;
break;
case BTN_MIDDLE:
button = 2;
break;
/* Treat BTN_[0-2] as LMR buttons on devices that do not advertise
BTN_LEFT, BTN_MIDDLE, BTN_RIGHT.
Otherwise, treat BTN_[0+n] as button 5+n.
XXX: This causes duplicate mappings for BTN_0 + n and BTN_SIDE + n
*/
case BTN_0:
button = (TestBit(BTN_LEFT, pEvdev->key_bitmask)) ? 8 : 1;
break;
case BTN_1:
button = (TestBit(BTN_MIDDLE, pEvdev->key_bitmask)) ? 9 : 2;
break;
case BTN_2:
button = (TestBit(BTN_RIGHT, pEvdev->key_bitmask)) ? 10 : 3;
break;
case BTN_SIDE:
case BTN_EXTRA:
case BTN_FORWARD:
case BTN_BACK:
case BTN_TASK:
button = (code - BTN_LEFT + 5);
break;
default:
if ((code > BTN_TASK) && (code < KEY_OK)) {
if (code < BTN_JOYSTICK) {
if (code < BTN_MOUSE)
button = (code - BTN_0 + 5);
else
button = (code - BTN_LEFT + 5);
}
}
}
if (button > EVDEV_MAXBUTTONS)
return 0;
return button;
}
#ifdef HAVE_PROPERTIES
#ifdef HAVE_LABELS
/* Aligned with linux/input.h.
Note that there are holes in the ABS_ range, these are simply replaced with
MISC here */
static char* abs_labels[] = {
AXIS_LABEL_PROP_ABS_X, /* 0x00 */
AXIS_LABEL_PROP_ABS_Y, /* 0x01 */
AXIS_LABEL_PROP_ABS_Z, /* 0x02 */
AXIS_LABEL_PROP_ABS_RX, /* 0x03 */
AXIS_LABEL_PROP_ABS_RY, /* 0x04 */
AXIS_LABEL_PROP_ABS_RZ, /* 0x05 */
AXIS_LABEL_PROP_ABS_THROTTLE, /* 0x06 */
AXIS_LABEL_PROP_ABS_RUDDER, /* 0x07 */
AXIS_LABEL_PROP_ABS_WHEEL, /* 0x08 */
AXIS_LABEL_PROP_ABS_GAS, /* 0x09 */
AXIS_LABEL_PROP_ABS_BRAKE, /* 0x0a */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_HAT0X, /* 0x10 */
AXIS_LABEL_PROP_ABS_HAT0Y, /* 0x11 */
AXIS_LABEL_PROP_ABS_HAT1X, /* 0x12 */
AXIS_LABEL_PROP_ABS_HAT1Y, /* 0x13 */
AXIS_LABEL_PROP_ABS_HAT2X, /* 0x14 */
AXIS_LABEL_PROP_ABS_HAT2Y, /* 0x15 */
AXIS_LABEL_PROP_ABS_HAT3X, /* 0x16 */
AXIS_LABEL_PROP_ABS_HAT3Y, /* 0x17 */
AXIS_LABEL_PROP_ABS_PRESSURE, /* 0x18 */
AXIS_LABEL_PROP_ABS_DISTANCE, /* 0x19 */
AXIS_LABEL_PROP_ABS_TILT_X, /* 0x1a */
AXIS_LABEL_PROP_ABS_TILT_Y, /* 0x1b */
AXIS_LABEL_PROP_ABS_TOOL_WIDTH, /* 0x1c */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_MISC, /* undefined */
AXIS_LABEL_PROP_ABS_VOLUME /* 0x20 */
};
static char* rel_labels[] = {
AXIS_LABEL_PROP_REL_X,
AXIS_LABEL_PROP_REL_Y,
AXIS_LABEL_PROP_REL_Z,
AXIS_LABEL_PROP_REL_RX,
AXIS_LABEL_PROP_REL_RY,
AXIS_LABEL_PROP_REL_RZ,
AXIS_LABEL_PROP_REL_HWHEEL,
AXIS_LABEL_PROP_REL_DIAL,
AXIS_LABEL_PROP_REL_WHEEL,
AXIS_LABEL_PROP_REL_MISC
};
#endif /* HAVE_LABELS */
static void
EvdevInitProperty(DeviceIntPtr dev)
{
InputInfoPtr pInfo = dev->public.devicePrivate;
EvdevPtr pEvdev = pInfo->private;
int rc;
BOOL invert[2];
char reopen;
prop_reopen = MakeAtom(EVDEV_PROP_REOPEN, strlen(EVDEV_PROP_REOPEN),
TRUE);
reopen = pEvdev->reopen_attempts;
rc = XIChangeDeviceProperty(dev, prop_reopen, XA_INTEGER, 8,
PropModeReplace, 1, &reopen, FALSE);
if (rc != Success)
return;
XISetDevicePropertyDeletable(dev, prop_reopen, FALSE);
if (pEvdev->flags & (EVDEV_RELATIVE_EVENTS | EVDEV_ABSOLUTE_EVENTS))
{
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);
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);
#ifdef HAVE_LABELS
/* Axis labelling */
if ((prop_label = XIGetKnownProperty(AXIS_LABEL_PROP)))
{
Atom atom, atoms[pEvdev->num_vals];
int natoms = pEvdev->num_vals;
int axis;
char **labels;
int labels_len = 0;
char *misc_label;
if (pEvdev->flags & EVDEV_RELATIVE_EVENTS)
{
labels = rel_labels;
labels_len = ArrayLength(rel_labels);
misc_label = AXIS_LABEL_PROP_REL_MISC;
} else if ((pEvdev->flags & EVDEV_ABSOLUTE_EVENTS))
{
labels = abs_labels;
labels_len = ArrayLength(abs_labels);
misc_label = AXIS_LABEL_PROP_ABS_MISC;
}
/* First, make sure all atoms are initialized */
atom = XIGetKnownProperty(misc_label);
for (axis = 0; axis < pEvdev->num_vals; axis++)
atoms[axis] = atom;
/* Now fill the ones we know */
for (axis = 0; axis < labels_len; axis++)
{
if (pEvdev->axis_map[axis] == -1)
continue;
atom = XIGetKnownProperty(labels[axis]);
if (!atom) /* Should not happen */
atom = XIGetKnownProperty(misc_label);
atoms[pEvdev->axis_map[axis]] = atom;
}
XIChangeDeviceProperty(dev, prop_label, XA_ATOM, 32,
PropModeReplace, natoms, &atoms, FALSE);
XISetDevicePropertyDeletable(dev, prop_label, FALSE);
}
#endif /* HAVE_LABELS */
}
}
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_reopen)
{
if (val->format != 8 || val->size != 1 || val->type != XA_INTEGER)
return BadMatch;
if (!checkonly)
pEvdev->reopen_attempts = *((CARD8*)val->data);
} 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)
{
if (val->size == 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 (val->size == 4)
{
CARD32 *vals = (CARD32*)val->data;
pEvdev->flags |= EVDEV_CALIBRATED;
pEvdev->calibration.min_x = vals[0];
pEvdev->calibration.max_x = vals[1];
pEvdev->calibration.min_y = vals[2];
pEvdev->calibration.max_y = vals[3];
}
}
} 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_label)
return BadAccess; /* Axis labels can't be changed */
return Success;
}
#endif
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