evdev 2.0.8

Expect this to be the last 2.0.x release.

.gitignore

@@ -0,0 +1,26 @@
+*.patch
+ChangeLog
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+man/evdev.4
+missing
+.deps
+.libs
+*.lo
+*.la
+stamp-h1
+*.bz2
+*.gz

ChangeLog

@@ -1,47 +0,0 @@
-2006-01-09  David Nusinow,,,  <set EMAIL_ADDRESS environment variable>
-
-	* man/Makefile.am:
-	* man/evdev.man:
-	Bugzilla #968 <https://bugs.freedesktop.org/show_bug.cgi?id=968>
-	Patch #4301 <https://bugs.freedesktop.org/attachment.cgi?id=4301>
-	Add evdev manpage
-
-2005-12-20  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version for X11R7 release.
-
-2005-12-14  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version number for final X11R7 release candidate.
-
-2005-12-06  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* man/Makefile.am:
-	Change *man_SOURCES ==> *man_PRE to fix autotools warnings.
-
-2005-12-03  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version number for X11R7 RC3 release.
-
-2005-12-01  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Remove extraneous AC_MSG_RESULT.
-
-2005-11-29  Adam Jackson  <ajax@freedesktop.org>
-
-	* configure.ac:
-	Only build dlloader modules by default.
-
-2005-11-09  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update package version number for X11R7 RC2 release.
-
-2005-11-01  Kevin E. Martin  <kem-at-freedesktop-dot-org>
-
-	* configure.ac:
-	Update pkgcheck dependencies to work with separate build roots.

Makefile.am

@@ -20,3 +20,15 @@
 
 AUTOMAKE_OPTIONS = foreign
 SUBDIRS = src man
+
+EXTRA_DIST = ChangeLog autogen.sh
+
+MAINTAINERCLEANFILES=ChangeLog
+
+.PHONY: ChangeLog
+
+ChangeLog:
+	(GIT_DIR=$(top_srcdir)/.git git-log > .changelog.tmp && mv .changelog.tmp ChangeLog; rm -f .changelog.tmp) || \
+	(touch ChangeLog; echo 'git directory not found: installing possibly empty changelog.' >&2)
+
+dist-hook: ChangeLog

configure.ac

@@ -22,7 +22,7 @@
 
 AC_PREREQ(2.57)
 AC_INIT([xf86-input-evdev],
-        1.99.2,
+        2.0.8,
         [https://bugs.freedesktop.org/enter_bug.cgi?product=xorg],
         xf86-input-evdev)
 

man/evdev.man

@@ -10,6 +10,8 @@ evdev \- Generic Linux input driver
 .B  "  Driver \*qevdev\*q"
 .BI "  Option \*qDevice\*q   \*q" devpath \*q
 .BI "  Option \*qPath\*q     \*q" path \*q
+.BI "  Option \*qEmulate3Buttons\*q     \*q" True \*q
+.BI "  Option \*qEmulate3Timeout\*q     \*q" 50 \*q
 \ \ ...
 .B EndSection
 .fi
@@ -54,6 +56,22 @@ generally be of the form \*q/dev/input/by-path/xyz\*q, where xyz includes the
 name of the device. The mapping from device node to hardware is
 system-dependent. This option has precedence over the \*qDevice\*q option but
 one of \*qPath\*q or \*qDevice\*q must be given.
+.TP 7
+.BI "Option \*qEmulate3Buttons\*q \*q" boolean \*q
+Enable/disable the emulation of the third (middle) mouse button for mice
+which only have two physical buttons.  The third button is emulated by
+pressing both buttons simultaneously.  Default: on, until a middle mouse
+button event is registered.
+.TP 7
+.BI "Option \*qEmulate3Timeout\*q \*q" integer \*q
+Sets the timeout (in milliseconds) that the driver waits before deciding
+if two buttons where pressed "simultaneously" when 3 button emulation is
+enabled.  Default: 50.
+.TP 7
+.BI "Option \*qReopenAttempts\*q \*q" integer \*q
+Number of reopen attempts after a read error occurs on the device (e.g. after
+waking up from suspend). In between each attempt is a 100ms wait. Default: 10.
+
 .SH AUTHORS
 Kristian Høgsberg.
 .SH "SEE ALSO"

src/Makefile.am

@@ -28,4 +28,6 @@
 @DRIVER_NAME@_drv_la_LDFLAGS = -module -avoid-version
 @DRIVER_NAME@_drv_ladir = @inputdir@
 
-@DRIVER_NAME@_drv_la_SOURCES = @DRIVER_NAME@.c
+@DRIVER_NAME@_drv_la_SOURCES = @DRIVER_NAME@.c \
+                               @DRIVER_NAME@.h \
+                               emuMB.c

src/emuMB.c

@@ -0,0 +1,334 @@
+/*
+ * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
+ * Copyright 1993 by David Dawes <dawes@xfree86.org>
+ * Copyright 2002 by SuSE Linux AG, Author: Egbert Eich
+ * Copyright 1994-2002 by The XFree86 Project, Inc.
+ * Copyright 2002 by Paul Elliott
+ * (Ported from xf86-input-mouse, above copyrights taken from there)
+ * Copyright © 2008 University of South Australia
+ *
+ * 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.
+ *
+ */
+
+/* Middle mouse button emulation code. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86.h>
+
+#include "evdev.h"
+
+enum {
+    MBEMU_DISABLED = 0,
+    MBEMU_ENABLED,
+    MBEMU_AUTO
+};
+
+/*
+ * Lets create a simple finite-state machine for 3 button emulation:
+ *
+ * We track buttons 1 and 3 (left and right).  There are 11 states:
+ *   0 ground           - initial state
+ *   1 delayed left     - left pressed, waiting for right
+ *   2 delayed right    - right pressed, waiting for left
+ *   3 pressed middle   - right and left pressed, emulated middle sent
+ *   4 pressed left     - left pressed and sent
+ *   5 pressed right    - right pressed and sent
+ *   6 released left    - left released after emulated middle
+ *   7 released right   - right released after emulated middle
+ *   8 repressed left   - left pressed after released left
+ *   9 repressed right  - right pressed after released right
+ *  10 pressed both     - both pressed, not emulating middle
+ *
+ * At each state, we need handlers for the following events
+ *   0: no buttons down
+ *   1: left button down
+ *   2: right button down
+ *   3: both buttons down
+ *   4: emulate3Timeout passed without a button change
+ * Note that button events are not deltas, they are the set of buttons being
+ * pressed now.  It's possible (ie, mouse hardware does it) to go from (eg)
+ * left down to right down without anything in between, so all cases must be
+ * handled.
+ *
+ * a handler consists of three values:
+ *   0: action1
+ *   1: action2
+ *   2: new emulation state
+ *
+ * action > 0: ButtonPress
+ * action = 0: nothing
+ * action < 0: ButtonRelease
+ *
+ * The comment preceeding each section is the current emulation state.
+ * The comments to the right are of the form
+ *      <button state> (<events>) -> <new emulation state>
+ * which should be read as
+ *      If the buttons are in <button state>, generate <events> then go to
+ *      <new emulation state>.
+ */
+static signed char stateTab[11][5][3] = {
+/* 0 ground */
+  {
+    {  0,  0,  0 },   /* nothing -> ground (no change) */
+    {  0,  0,  1 },   /* left -> delayed left */
+    {  0,  0,  2 },   /* right -> delayed right */
+    {  2,  0,  3 },   /* left & right (middle press) -> pressed middle */
+    {  0,  0, -1 }    /* timeout N/A */
+  },
+/* 1 delayed left */
+  {
+    {  1, -1,  0 },   /* nothing (left event) -> ground */
+    {  0,  0,  1 },   /* left -> delayed left (no change) */
+    {  1, -1,  2 },   /* right (left event) -> delayed right */
+    {  2,  0,  3 },   /* left & right (middle press) -> pressed middle */
+    {  1,  0,  4 },   /* timeout (left press) -> pressed left */
+  },
+/* 2 delayed right */
+  {
+    {  3, -3,  0 },   /* nothing (right event) -> ground */
+    {  3, -3,  1 },   /* left (right event) -> delayed left (no change) */
+    {  0,  0,  2 },   /* right -> delayed right (no change) */
+    {  2,  0,  3 },   /* left & right (middle press) -> pressed middle */
+    {  3,  0,  5 },   /* timeout (right press) -> pressed right */
+  },
+/* 3 pressed middle */
+  {
+    { -2,  0,  0 },   /* nothing (middle release) -> ground */
+    {  0,  0,  7 },   /* left -> released right */
+    {  0,  0,  6 },   /* right -> released left */
+    {  0,  0,  3 },   /* left & right -> pressed middle (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 4 pressed left */
+  {
+    { -1,  0,  0 },   /* nothing (left release) -> ground */
+    {  0,  0,  4 },   /* left -> pressed left (no change) */
+    { -1,  0,  2 },   /* right (left release) -> delayed right */
+    {  3,  0, 10 },   /* left & right (right press) -> pressed both */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 5 pressed right */
+  {
+    { -3,  0,  0 },   /* nothing (right release) -> ground */
+    { -3,  0,  1 },   /* left (right release) -> delayed left */
+    {  0,  0,  5 },   /* right -> pressed right (no change) */
+    {  1,  0, 10 },   /* left & right (left press) -> pressed both */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 6 released left */
+  {
+    { -2,  0,  0 },   /* nothing (middle release) -> ground */
+    { -2,  0,  1 },   /* left (middle release) -> delayed left */
+    {  0,  0,  6 },   /* right -> released left (no change) */
+    {  1,  0,  8 },   /* left & right (left press) -> repressed left */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 7 released right */
+  {
+    { -2,  0,  0 },   /* nothing (middle release) -> ground */
+    {  0,  0,  7 },   /* left -> released right (no change) */
+    { -2,  0,  2 },   /* right (middle release) -> delayed right */
+    {  3,  0,  9 },   /* left & right (right press) -> repressed right */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 8 repressed left */
+  {
+    { -2, -1,  0 },   /* nothing (middle release, left release) -> ground */
+    { -2,  0,  4 },   /* left (middle release) -> pressed left */
+    { -1,  0,  6 },   /* right (left release) -> released left */
+    {  0,  0,  8 },   /* left & right -> repressed left (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 9 repressed right */
+  {
+    { -2, -3,  0 },   /* nothing (middle release, right release) -> ground */
+    { -3,  0,  7 },   /* left (right release) -> released right */
+    { -2,  0,  5 },   /* right (middle release) -> pressed right */
+    {  0,  0,  9 },   /* left & right -> repressed right (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+/* 10 pressed both */
+  {
+    { -1, -3,  0 },   /* nothing (left release, right release) -> ground */
+    { -3,  0,  4 },   /* left (right release) -> pressed left */
+    { -1,  0,  5 },   /* right (left release) -> pressed right */
+    {  0,  0, 10 },   /* left & right -> pressed both (no change) */
+    {  0,  0, -1 },   /* timeout N/A */
+  },
+};
+
+
+int
+EvdevMBEmuTimer(InputInfoPtr pInfo)
+{
+    EvdevPtr pEvdev = pInfo->private;
+    int	sigstate;
+    int id;
+
+    sigstate = xf86BlockSIGIO ();
+
+    pEvdev->emulateMB.pending = FALSE;
+    if ((id = stateTab[pEvdev->emulateMB.state][4][0]) != 0) {
+        xf86PostButtonEvent(pInfo->dev, 0, abs(id), (id >= 0), 0, 0);
+        pEvdev->emulateMB.state =
+            stateTab[pEvdev->emulateMB.state][4][2];
+    } else {
+        ErrorF("Got unexpected buttonTimer in state %d\n",
+                pEvdev->emulateMB.state);
+    }
+
+    xf86UnblockSIGIO (sigstate);
+    return 0;
+}
+
+
+/**
+ * Emulate a middle button on button press.
+ *
+ * @param code Evdev event code (BTN_LEFT or BTN_RIGHT)
+ * @param press TRUE if press, FALSE if release.
+ *
+ * @return TRUE if event was swallowed by middle mouse button emulation, FALSE
+ * otherwise.
+ */
+BOOL
+EvdevMBEmuFilterEvent(InputInfoPtr pInfo, int code, BOOL press)
+{
+    EvdevPtr pEvdev = pInfo->private;
+    int id;
+    int *btstate;
+    int ret = FALSE;
+
+    if (!pEvdev->emulateMB.enabled)
+        return ret;
+
+    /* don't care about other buttons */
+    if (code != BTN_LEFT && code != BTN_RIGHT)
+        return ret;
+
+    btstate = &pEvdev->emulateMB.buttonstate;
+    if (press)
+        *btstate |= (code == BTN_LEFT) ? 0x1 : 0x2;
+    else
+        *btstate &= (code == BTN_LEFT) ? ~0x1 : ~0x2;
+
+    if ((id = stateTab[pEvdev->emulateMB.state][*btstate][0]) != 0)
+    {
+        xf86PostButtonEvent(pInfo->dev, 0, abs(id), (id >= 0), 0, 0);
+        ret = TRUE;
+    }
+    if ((id = stateTab[pEvdev->emulateMB.state][*btstate][1]) != 0)
+    {
+        xf86PostButtonEvent(pInfo->dev, 0, abs(id), (id >= 0), 0, 0);
+        ret = TRUE;
+    }
+
+    pEvdev->emulateMB.state =
+        stateTab[pEvdev->emulateMB.state][*btstate][2];
+
+    if (stateTab[pEvdev->emulateMB.state][4][0] != 0) {
+        pEvdev->emulateMB.expires = GetTimeInMillis () + pEvdev->emulateMB.timeout;
+        pEvdev->emulateMB.pending = TRUE;
+        ret = TRUE;
+    } else {
+        pEvdev->emulateMB.pending = FALSE;
+    }
+
+    return ret;
+}
+
+
+void EvdevMBEmuWakeupHandler(pointer data,
+                             int i,
+                             pointer LastSelectMask)
+{
+    InputInfoPtr pInfo = (InputInfoPtr)data;
+    EvdevPtr     pEvdev = (EvdevPtr)pInfo->private;
+    int ms;
+
+    if (pEvdev->emulateMB.pending)
+    {
+        ms = pEvdev->emulateMB.expires - GetTimeInMillis();
+        if (ms <= 0)
+            EvdevMBEmuTimer(pInfo);
+    }
+}
+
+void EvdevMBEmuBlockHandler(pointer data,
+                            struct timeval **waitTime,
+                            pointer LastSelectMask)
+{
+    InputInfoPtr    pInfo = (InputInfoPtr) data;
+    EvdevPtr        pEvdev= (EvdevPtr) pInfo->private;
+    int             ms;
+
+    if (pEvdev->emulateMB.pending)
+    {
+        ms = pEvdev->emulateMB.expires - GetTimeInMillis ();
+        if (ms <= 0)
+            ms = 0;
+        AdjustWaitForDelay (waitTime, ms);
+    }
+}
+
+void
+EvdevMBEmuPreInit(InputInfoPtr pInfo)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    pEvdev->emulateMB.enabled = MBEMU_AUTO;
+
+    if (xf86FindOption(pInfo->options, "Emulate3Buttons"))
+    {
+        pEvdev->emulateMB.enabled = xf86SetBoolOption(pInfo->options,
+                                                      "Emulate3Buttons",
+                                                      MBEMU_ENABLED);
+        xf86Msg(X_INFO, "%s: Forcing middle mouse button emulation.\n",
+                        pInfo->name);
+    }
+
+    pEvdev->emulateMB.timeout = xf86SetIntOption(pInfo->options,
+                                                 "Emulate3Timeout", 50);
+    RegisterBlockAndWakeupHandlers (EvdevMBEmuBlockHandler,
+                                    EvdevMBEmuWakeupHandler,
+                                    (pointer)pInfo);
+
+}
+
+void
+EvdevMBEmuFinalize(InputInfoPtr pInfo)
+{
+    RemoveBlockAndWakeupHandlers (EvdevMBEmuBlockHandler,
+                                  EvdevMBEmuWakeupHandler,
+                                  (pointer)pInfo);
+
+}
+
+/* Enable/disable middle mouse button emulation. */
+void
+EvdevMBEmuEnable(InputInfoPtr pInfo, BOOL enable)
+{
+    EvdevPtr pEvdev = (EvdevPtr)pInfo->private;
+    if (pEvdev->emulateMB.enabled == MBEMU_AUTO)
+        pEvdev->emulateMB.enabled = enable;
+}

src/evdev.c

@@ -33,7 +33,6 @@
 #include <X11/XF86keysym.h>
 #include <X11/extensions/XIproto.h>
 
-#include <linux/input.h>
 #include <unistd.h>
 
 #include <misc.h>
@@ -43,11 +42,9 @@
 #include <xf86Xinput.h>
 #include <exevents.h>
 #include <mipointer.h>
+#include <xorgVersion.h>
 
-#if defined(XKB)
-/* XXX VERY WRONG.  this is a client side header. */
-#include <X11/extensions/XKBstr.h>
-#endif
+#include "evdev.h"
 
 #include <xf86Module.h>
 
@@ -76,6 +73,7 @@
 #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 MIN_KEYCODE 8
 #define GLYPHS_PER_KEY 2
@@ -91,25 +89,6 @@
 #define MODEFLAG	8
 #define COMPOSEFLAG	16
 
-typedef struct {
-    int kernel24;
-    int screen;
-    int min_x, min_y, max_x, max_y;
-    int abs_x, abs_y, old_x, old_y;
-    int flags;
-    int tool;
-
-    /* XKB stuff has to be per-device rather than per-driver */
-    int noXkb;
-#ifdef XKB
-    char                    *xkb_rules;
-    char                    *xkb_model;
-    char                    *xkb_layout;
-    char                    *xkb_variant;
-    char                    *xkb_options;
-    XkbComponentNamesRec    xkbnames;
-#endif
-} EvdevRec, *EvdevPtr;
 
 static const char *evdevDefaults[] = {
     "XkbRules",     "base",
@@ -118,6 +97,9 @@ static const char *evdevDefaults[] = {
     NULL
 };
 
+static int EvdevOn(DeviceIntPtr);
+static int EvdevCacheCompare(InputInfoPtr pInfo, Bool compare);
+
 static void
 SetXkbOption(InputInfoPtr pInfo, char *name, char **option)
 {
@@ -153,6 +135,9 @@ PostButtonClicks(InputInfoPtr pInfo, int button, int count)
 static void
 PostKbdEvent(InputInfoPtr pInfo, struct input_event *ev, int value)
 {
+    int code = ev->code + MIN_KEYCODE;
+    static char warned[KEY_MAX];
+
     /* filter repeat events for chording keys */
     if (value == 2 &&
         (ev->code == KEY_LEFTCTRL || ev->code == KEY_RIGHTCTRL ||
@@ -163,7 +148,66 @@ PostKbdEvent(InputInfoPtr pInfo, struct input_event *ev, int value)
          ev->code == KEY_SCROLLLOCK)) /* XXX windows keys? */
         return;
 
-    xf86PostKeyboardEvent(pInfo->dev, ev->code + MIN_KEYCODE, value);
+    if (code > 255 && ev->code < KEY_MAX) {
+	if (!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 anyway, just drop them.  */
+    if (code > 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, 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->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);
+        return 0;
+    }
+
+    return 100; /* come back in 100 ms */
 }
 
 static void
@@ -184,7 +228,16 @@ EvdevReadInput(InputInfoPtr pInfo)
         if (len != sizeof ev) {
             /* The kernel promises that we always only read a complete
              * event, so len != sizeof ev is an error. */
-            xf86Msg(X_ERROR, "Read error: %s\n", strerror(errno));
+            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;
         }
 
@@ -241,12 +294,15 @@ EvdevReadInput(InputInfoPtr pInfo)
             switch (ev.code) {
 	    /* swap here, pretend we're an X-conformant device. */
             case BTN_LEFT:
-                xf86PostButtonEvent(pInfo->dev, 0, 1, value, 0, 0);
+                if (!EvdevMBEmuFilterEvent(pInfo, ev.code, value))
+                    xf86PostButtonEvent(pInfo->dev, 0, 1, value, 0, 0);
                 break;
             case BTN_RIGHT:
-                xf86PostButtonEvent(pInfo->dev, 0, 3, value, 0, 0);
+                if (!EvdevMBEmuFilterEvent(pInfo, ev.code, value))
+                    xf86PostButtonEvent(pInfo->dev, 0, 3, value, 0, 0);
                 break;
             case BTN_MIDDLE:
+                EvdevMBEmuEnable(pInfo, FALSE);
                 xf86PostButtonEvent(pInfo->dev, 0, 2, value, 0, 0);
                 break;
 
@@ -272,8 +328,15 @@ EvdevReadInput(InputInfoPtr pInfo)
 		break;
 
             default:
-		if (ev.code > BTN_TASK && ev.code < KEY_OK)
+		if (ev.code > BTN_TASK && ev.code < KEY_OK) {
+		    /* Some fancy mice with a lot of buttons generate
+		     * button events between BTN_TASK and BTN_JOYSTICK */
+		    if (ev.code < BTN_JOYSTICK)
+			xf86PostButtonEvent(pInfo->dev, 0,
+			                    ev.code - BTN_LEFT + 5,
+			                    value, 0, 0);
 		    break;
+		}
 
                 PostKbdEvent(pInfo, &ev, value);
 		break;
@@ -318,7 +381,7 @@ EvdevReadInput(InputInfoPtr pInfo)
     }
 }
 
-#define TestBit(bit, array) (array[(bit) / 8] & (1 << ((bit) % 8)))
+#define TestBit(bit, array) (array[(bit) / LONG_BITS]) & (1L << ((bit) % LONG_BITS))
 
 static void
 EvdevPtrCtrlProc(DeviceIntPtr device, PtrCtrl *ctrl)
@@ -726,7 +789,10 @@ EvdevAddAbsClass(DeviceIntPtr device)
     pEvdev->min_y = absinfo_y.minimum;
     pEvdev->max_y = absinfo_y.maximum;
 
-    if (!InitValuatorClassDeviceStruct(device, 2, GetMotionHistory,
+    if (!InitValuatorClassDeviceStruct(device, 2,
+#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3
+                                       GetMotionHistory,
+#endif
                                        GetMotionHistorySize(), Absolute))
         return !Success;
 
@@ -756,16 +822,19 @@ EvdevAddRelClass(DeviceIntPtr device)
 
     pInfo = device->public.devicePrivate;
 
-    if (!InitValuatorClassDeviceStruct(device, 2, GetMotionHistory,
+    if (!InitValuatorClassDeviceStruct(device, 2,
+#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 3
+                                       GetMotionHistory,
+#endif
                                        GetMotionHistorySize(), Relative))
         return !Success;
 
     /* X valuator */
-    xf86InitValuatorAxisStruct(device, 0, 0, -1, 1, 0, 1);
+    xf86InitValuatorAxisStruct(device, 0, -1, -1, 1, 0, 1);
     xf86InitValuatorDefaults(device, 0);
 
     /* Y valuator */
-    xf86InitValuatorAxisStruct(device, 1, 0, -1, 1, 0, 1);
+    xf86InitValuatorAxisStruct(device, 1, -1, -1, 1, 0, 1);
     xf86InitValuatorDefaults(device, 1);
     xf86MotionHistoryAllocate(pInfo);
 
@@ -830,6 +899,56 @@ EvdevInit(DeviceIntPtr device)
     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->kernel24 &&
+        (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
+    {
+        xf86AddEnabledDevice(pInfo);
+        if ((pEvdev->flags & EVDEV_BUTTON_EVENTS) &&
+            !(pEvdev->flags & EVDEV_INITIALIZED))
+        {
+            EvdevMBEmuPreInit(pInfo);
+        }
+        pEvdev->flags |= EVDEV_INITIALIZED;
+        device->public.on = TRUE;
+    }
+
+    return Success;
+}
+
+
 static int
 EvdevProc(DeviceIntPtr device, int what)
 {
@@ -845,23 +964,35 @@ EvdevProc(DeviceIntPtr device, int what)
 	return EvdevInit(device);
 
     case DEVICE_ON:
-        if (!pEvdev->kernel24 && ioctl(pInfo->fd, EVIOCGRAB, (void *)1))
-            xf86Msg(X_WARNING, "%s: Grab failed (%s)\n", pInfo->name,
-                    strerror(errno));
-        xf86AddEnabledDevice(pInfo);
-	device->public.on = TRUE;
-	break;
-	    
+        return EvdevOn(device);
+
     case DEVICE_OFF:
-        if (!pEvdev->kernel24 && ioctl(pInfo->fd, EVIOCGRAB, (void *)0))
-            xf86Msg(X_WARNING, "%s: Release failed (%s)\n", pInfo->name,
-                    strerror(errno));
-        xf86RemoveEnabledDevice(pInfo);
+        if (pInfo->fd != -1)
+        {
+            if (!pEvdev->kernel24 && 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;
+        }
+        if (pEvdev->flags & EVDEV_INITIALIZED)
+            EvdevMBEmuFinalize(pInfo);
+        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;
+        }
 	break;
     }
 
@@ -891,19 +1022,134 @@ EvdevConvert(InputInfoPtr pInfo, int first, int num, int v0, int v1, int v2,
 
     return TRUE;
 }
+/**
+ * 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};
+    long bitmask[NBITS(EV_MAX)]      = {0};
+    long key_bitmask[NBITS(KEY_MAX)] = {0};
+    long rel_bitmask[NBITS(REL_MAX)] = {0};
+    long abs_bitmask[NBITS(ABS_MAX)] = {0};
+    long led_bitmask[NBITS(LED_MAX)] = {0};
+    struct input_absinfo absinfo[ABS_MAX];
+
+    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))
+        goto error;
+
+    if (ioctl(pInfo->fd,
+              EVIOCGBIT(0, sizeof(bitmask)), bitmask) < 0) {
+        xf86Msg(X_ERROR, "ioctl EVIOCGNAME failed: %s\n", strerror(errno));
+        goto error;
+    }
+
+    if (compare && memcmp(pEvdev->bitmask, bitmask, sizeof(bitmask)))
+        goto error;
+
+
+    if (ioctl(pInfo->fd,
+              EVIOCGBIT(EV_REL, sizeof(rel_bitmask)), rel_bitmask) < 0) {
+        xf86Msg(X_ERROR, "ioctl EVIOCGBIT failed: %s\n", strerror(errno));
+        goto error;
+    }
+
+    if (compare && memcmp(pEvdev->rel_bitmask, rel_bitmask, sizeof(rel_bitmask)))
+        goto error;
+
+    if (ioctl(pInfo->fd,
+              EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask) < 0) {
+        xf86Msg(X_ERROR, "ioctl EVIOCGBIT failed: %s\n", strerror(errno));
+        goto error;
+    }
+
+    if (compare && memcmp(pEvdev->abs_bitmask, abs_bitmask, sizeof(abs_bitmask)))
+        goto error;
+
+    if (ioctl(pInfo->fd,
+              EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask) < 0) {
+        xf86Msg(X_ERROR, "ioctl EVIOCGBIT failed: %s\n", strerror(errno));
+        goto error;
+    }
+
+    if (compare && memcmp(pEvdev->key_bitmask, key_bitmask, sizeof(key_bitmask)))
+        goto error;
+
+    if (ioctl(pInfo->fd,
+              EVIOCGBIT(EV_LED, sizeof(led_bitmask)), led_bitmask) < 0) {
+        xf86Msg(X_ERROR, "ioctl EVIOCGBIT failed: %s\n", strerror(errno));
+        goto error;
+    }
+
+    if (compare && memcmp(pEvdev->led_bitmask, led_bitmask, sizeof(led_bitmask)))
+        goto error;
+
+    memset(absinfo, 0, sizeof(absinfo));
+
+    for (i = 0; i < ABS_MAX; i++)
+    {
+        if (TestBit(i, abs_bitmask))
+        {
+            if (ioctl(pInfo->fd, EVIOCGABS(i), &absinfo[i]) < 0) {
+                xf86Msg(X_ERROR, "ioctl EVIOCGABS failed: %s\n", strerror(errno));
+                goto error;
+            }
+        }
+    }
+
+    if (compare && memcmp(pEvdev->absinfo, absinfo, sizeof(absinfo)))
+            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)
 {
-    char key_bitmask[(KEY_MAX + 7) / 8];
-    char rel_bitmask[(REL_MAX + 7) / 8];
-    char abs_bitmask[(ABS_MAX + 7) / 8];
+    long key_bitmask[NBITS(KEY_MAX)];
+    long rel_bitmask[NBITS(REL_MAX)];
+    long abs_bitmask[NBITS(ABS_MAX)];
     int i, has_axes, has_buttons, has_keys;
     EvdevPtr pEvdev = pInfo->private;
 
-    if (ioctl(pInfo->fd, EVIOCGRAB, (void *)1) && errno == EINVAL) {
-        /* keyboards are unsafe in 2.4 */
-        pEvdev->kernel24 = 1;
+    if (ioctl(pInfo->fd, EVIOCGRAB, (void *)1)) {
+        if (errno == EINVAL) {
+            /* keyboards are unsafe in 2.4 */
+            pEvdev->kernel24 = 1;
+        } else {
+            xf86Msg(X_ERROR, "Grab failed. Device already configured?\n");
+            return 1;
+        }
     } else {
         ioctl(pInfo->fd, EVIOCGRAB, (void *)0);
     }
@@ -1018,10 +1264,6 @@ EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
     pInfo->always_core_feedback = 0;
     pInfo->conf_idev = dev;
 
-    if (!(pEvdev = xcalloc(sizeof(*pEvdev), 1)))
-        return pInfo;
-    pInfo->private = pEvdev;
-
     if (!(pEvdev = xcalloc(sizeof(EvdevRec), 1)))
         return pInfo;
 
@@ -1045,12 +1287,13 @@ EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
 	xf86DeleteInput(pInfo, 0);
         return NULL;
     }
-	
+
+    pEvdev->device = device;
+
     xf86Msg(deviceFrom, "%s: Device: \"%s\"\n", pInfo->name, device);
     do {
         pInfo->fd = open(device, O_RDWR, 0);
-    }
-    while (pInfo->fd < 0 && errno == EINTR);
+    } while (pInfo->fd < 0 && errno == EINTR);
 
     if (pInfo->fd < 0) {
         xf86Msg(X_ERROR, "Unable to open evdev device \"%s\".\n", device);
@@ -1058,14 +1301,19 @@ EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
         return NULL;
     }
 
+    pEvdev->reopen_attempts = xf86SetIntOption(pInfo->options, "ReopenAttempts", 10);
+
     pEvdev->noXkb = noXkbExtension;
     /* parse the XKB options during kbd setup */
 
     if (EvdevProbe(pInfo)) {
+	close(pInfo->fd);
 	xf86DeleteInput(pInfo, 0);
         return NULL;
     }
 
+    EvdevCacheCompare(pInfo, FALSE); /* cache device data */
+
     return pInfo;
 }
 
@@ -1100,8 +1348,8 @@ static XF86ModuleVersionInfo EvdevVersionRec =
     MODULEVENDORSTRING,
     MODINFOSTRING1,
     MODINFOSTRING2,
-    0, /* Missing from SDK: XORG_VERSION_CURRENT, */
-    1, 0, 0,
+    XORG_VERSION_CURRENT,
+    PACKAGE_VERSION_MAJOR, PACKAGE_VERSION_MINOR, PACKAGE_VERSION_PATCHLEVEL,
     ABI_CLASS_XINPUT,
     ABI_XINPUT_VERSION,
     MOD_CLASS_XINPUT,

src/evdev.h

@@ -0,0 +1,97 @@
+/*
+ * Copyright © 2004-2008 Red Hat, Inc.
+ * Copyright © 2008 University of South Australia
+ *
+ * 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@cs.unisa.edu.au)
+ */
+
+#ifndef EVDEV_H
+#define EVDEV_H
+
+#include <linux/input.h>
+
+#include <xf86Xinput.h>
+#include <xf86_OSproc.h>
+
+#if defined(XKB)
+/* XXX VERY WRONG.  this is a client side header. */
+#include <X11/extensions/XKBstr.h>
+#endif
+
+#define LONG_BITS (sizeof(long) * 8)
+#define NBITS(x) (((x) + LONG_BITS - 1) / LONG_BITS)
+
+typedef struct {
+    const char *device;
+    int kernel24;
+    int screen;
+    int min_x, min_y, max_x, max_y;
+    int abs_x, abs_y, old_x, old_y;
+    int flags;
+    int tool;
+
+    /* XKB stuff has to be per-device rather than per-driver */
+    int noXkb;
+#ifdef XKB
+    char                    *xkb_rules;
+    char                    *xkb_model;
+    char                    *xkb_layout;
+    char                    *xkb_variant;
+    char                    *xkb_options;
+    XkbComponentNamesRec    xkbnames;
+#endif
+    /* Middle mouse button emulation */
+    struct {
+        BOOL                enabled;
+        BOOL                pending;     /* timer waiting? */
+        int                 buttonstate; /* phys. button state */
+        int                 state;       /* state machine (see bt3emu.c) */
+        Time                expires;     /* time of expiry */
+        Time                timeout;
+    } emulateMB;
+    int reopen_attempts; /* max attempts to re-open after read failure */
+    int reopen_left;     /* number of attempts left to re-open the device */
+    OsTimerPtr reopen_timer;
+
+    /* Cached info from device. */
+    char name[1024];
+    long bitmask[NBITS(EV_MAX)];
+    long key_bitmask[NBITS(KEY_MAX)];
+    long rel_bitmask[NBITS(REL_MAX)];
+    long abs_bitmask[NBITS(ABS_MAX)];
+    long led_bitmask[NBITS(LED_MAX)];
+    struct input_absinfo absinfo[ABS_MAX];
+} EvdevRec, *EvdevPtr;
+
+/* Middle Button emulation */
+int  EvdevMBEmuTimer(InputInfoPtr);
+BOOL EvdevMBEmuFilterEvent(InputInfoPtr, int, BOOL);
+void EvdevMBEmuWakeupHandler(pointer, int, pointer);
+void EvdevMBEmuBlockHandler(pointer, struct timeval**, pointer);
+void EvdevMBEmuPreInit(InputInfoPtr);
+void EvdevMBEmuFinalize(InputInfoPtr);
+void EvdevMBEmuEnable(InputInfoPtr, BOOL);
+
+#endif