usb-keyboard.c   [plain text]

/* $XFree86$ */
/* Portions of this file were derived from the following files:
 *
 **********************************************************************
 *
 * xfree86/common/xf86KbdLnx.c
 *
 * Linux version of keymapping setup. The kernel (since 0.99.14) has support
 * for fully remapping the keyboard, but there are some differences between
 * the Linux map and the SVR4 map (esp. in the extended keycodes). We also
 * remove the restriction on what keycodes can be remapped.
 * Orest Zborowski.
 *
 * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
 *
 * 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 Thomas Roell not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Thomas Roell makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THOMAS ROELL 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.
 *
 */

/*
 * Copyright 2001,2002 Red Hat Inc., Durham, North Carolina.
 *
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation on the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/*
 * Authors:
 *   Rickard E. (Rik) Faith <faith@redhat.com>
 *
 */

/** \file
 *
 * This code implements a low-level device driver for a USB keyboard
 * under Linux.  The keymap description is derived from code by Thomas
 * Roell, Orest Zborowski. */

#ifdef HAVE_DMX_CONFIG_H
#include <dmx-config.h>
#endif

#include "atKeynames.h"
#include "usb-private.h"

#define USB_KEYBOARD_DEBUG 0

/*****************************************************************************/
/* Define some macros to make it easier to move this file to another
 * part of the Xserver tree.  All calls to the dmx* layer are #defined
 * here for the .c file.  The .h file will also have to be edited. */
#include "usb-keyboard.h"

#define GETPRIV       myPrivate *priv                            \
                      = ((DMXLocalInputInfoPtr)(pDev->devicePrivate))->private

#define LOG0(f)       dmxLog(dmxDebug,f)
#define LOG1(f,a)     dmxLog(dmxDebug,f,a)
#define LOG2(f,a,b)   dmxLog(dmxDebug,f,a,b)
#define LOG3(f,a,b,c) dmxLog(dmxDebug,f,a,b,c)
#define FATAL0(f)     dmxLog(dmxFatal,f)
#define FATAL1(f,a)   dmxLog(dmxFatal,f,a)
#define FATAL2(f,a,b) dmxLog(dmxFatal,f,a,b)
#define MOTIONPROC    dmxMotionProcPtr
#define ENQUEUEPROC   dmxEnqueueProcPtr
#define CHECKPROC     dmxCheckSpecialProcPtr
#define BLOCK         DMXBlockType

/* End of interface definitions. */
/*****************************************************************************/

#define GLYPHS_PER_KEY	4
#define NUM_KEYCODES	248
#define MIN_KEYCODE     8
#define MAX_KEYCODE     (NUM_KEYCODES + MIN_KEYCODE - 1)

static KeySym map[NUM_KEYCODES * GLYPHS_PER_KEY] = {
/* Table modified from xc/programs/Xserver/hw/xfree86/common/xf86Keymap.h */
    /* 0x00 */  NoSymbol,       NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x01 */  XK_Escape,      NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x02 */  XK_1,           XK_exclam,	NoSymbol,	NoSymbol,
    /* 0x03 */  XK_2,           XK_at,		NoSymbol,	NoSymbol,
    /* 0x04 */  XK_3,           XK_numbersign,	NoSymbol,	NoSymbol,
    /* 0x05 */  XK_4,           XK_dollar,	NoSymbol,	NoSymbol,
    /* 0x06 */  XK_5,           XK_percent,	NoSymbol,	NoSymbol,
    /* 0x07 */  XK_6,           XK_asciicircum,	NoSymbol,	NoSymbol,
    /* 0x08 */  XK_7,           XK_ampersand,	NoSymbol,	NoSymbol,
    /* 0x09 */  XK_8,           XK_asterisk,	NoSymbol,	NoSymbol,
    /* 0x0a */  XK_9,           XK_parenleft,	NoSymbol,	NoSymbol,
    /* 0x0b */  XK_0,           XK_parenright,	NoSymbol,	NoSymbol,
    /* 0x0c */  XK_minus,       XK_underscore,	NoSymbol,	NoSymbol,
    /* 0x0d */  XK_equal,       XK_plus,	NoSymbol,	NoSymbol,
    /* 0x0e */  XK_BackSpace,   NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x0f */  XK_Tab,         XK_ISO_Left_Tab,NoSymbol,	NoSymbol,
    /* 0x10 */  XK_Q,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x11 */  XK_W,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x12 */  XK_E,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x13 */  XK_R,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x14 */  XK_T,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x15 */  XK_Y,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x16 */  XK_U,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x17 */  XK_I,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x18 */  XK_O,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x19 */  XK_P,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x1a */  XK_bracketleft, XK_braceleft,	NoSymbol,	NoSymbol,
    /* 0x1b */  XK_bracketright,XK_braceright,	NoSymbol,	NoSymbol,
    /* 0x1c */  XK_Return,      NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x1d */  XK_Control_L,   NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x1e */  XK_A,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x1f */  XK_S,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x20 */  XK_D,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x21 */  XK_F,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x22 */  XK_G,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x23 */  XK_H,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x24 */  XK_J,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x25 */  XK_K,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x26 */  XK_L,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x27 */  XK_semicolon,   XK_colon,	NoSymbol,	NoSymbol,
    /* 0x28 */  XK_quoteright,  XK_quotedbl,	NoSymbol,	NoSymbol,
    /* 0x29 */  XK_quoteleft,	XK_asciitilde,	NoSymbol,	NoSymbol,
    /* 0x2a */  XK_Shift_L,     NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x2b */  XK_backslash,   XK_bar,		NoSymbol,	NoSymbol,
    /* 0x2c */  XK_Z,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x2d */  XK_X,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x2e */  XK_C,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x2f */  XK_V,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x30 */  XK_B,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x31 */  XK_N,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x32 */  XK_M,           NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x33 */  XK_comma,       XK_less,	NoSymbol,	NoSymbol,
    /* 0x34 */  XK_period,      XK_greater,	NoSymbol,	NoSymbol,
    /* 0x35 */  XK_slash,       XK_question,	NoSymbol,	NoSymbol,
    /* 0x36 */  XK_Shift_R,     NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x37 */  XK_KP_Multiply, NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x38 */  XK_Alt_L,	XK_Meta_L,	NoSymbol,	NoSymbol,
    /* 0x39 */  XK_space,       NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x3a */  XK_Caps_Lock,   NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x3b */  XK_F1,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x3c */  XK_F2,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x3d */  XK_F3,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x3e */  XK_F4,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x3f */  XK_F5,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x40 */  XK_F6,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x41 */  XK_F7,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x42 */  XK_F8,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x43 */  XK_F9,          NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x44 */  XK_F10,         NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x45 */  XK_Num_Lock,    NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x46 */  XK_Scroll_Lock,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x47 */  XK_KP_Home,	XK_KP_7,	NoSymbol,	NoSymbol,
    /* 0x48 */  XK_KP_Up,	XK_KP_8,	NoSymbol,	NoSymbol,
    /* 0x49 */  XK_KP_Prior,	XK_KP_9,	NoSymbol,	NoSymbol,
    /* 0x4a */  XK_KP_Subtract, NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x4b */  XK_KP_Left,	XK_KP_4,	NoSymbol,	NoSymbol,
    /* 0x4c */  XK_KP_Begin,	XK_KP_5,	NoSymbol,	NoSymbol,
    /* 0x4d */  XK_KP_Right,	XK_KP_6,	NoSymbol,	NoSymbol,
    /* 0x4e */  XK_KP_Add,      NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x4f */  XK_KP_End,	XK_KP_1,	NoSymbol,	NoSymbol,
    /* 0x50 */  XK_KP_Down,	XK_KP_2,	NoSymbol,	NoSymbol,
    /* 0x51 */  XK_KP_Next,	XK_KP_3,	NoSymbol,	NoSymbol,
    /* 0x52 */  XK_KP_Insert,	XK_KP_0,	NoSymbol,	NoSymbol,
    /* 0x53 */  XK_KP_Delete,	XK_KP_Decimal,	NoSymbol,	NoSymbol,
    /* 0x54 */  XK_Sys_Req,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x55 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x56 */  XK_less,	XK_greater,	NoSymbol,	NoSymbol,
    /* 0x57 */  XK_F11,		NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x58 */  XK_F12,		NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x59 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x5a */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x5b */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x5c */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x5d */  XK_Begin,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x5e */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x5f */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x60 */  XK_KP_Enter,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x61 */  XK_Control_R,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x62 */  XK_KP_Divide,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x63 */  XK_Print,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x64 */  XK_Alt_R,	XK_Meta_R,	NoSymbol,	NoSymbol,
    /* 0x65 */  XK_Break,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x66 */  XK_Home,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x67 */  XK_Up,		NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x68 */  XK_Prior,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x69 */  XK_Left,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x6a */  XK_Right,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x6b */  XK_End,		NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x6c */  XK_Down,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x6d */  XK_Next,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x6e */  XK_Insert,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x6f */  XK_Delete,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x70 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x71 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x72 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x73 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x74 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x75 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x76 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x77 */  XK_Pause,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x78 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x79 */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x7a */  XK_Menu,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x7b */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x7c */  NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x7d */  XK_Super_L,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x7e */  XK_Super_R,	NoSymbol,	NoSymbol,	NoSymbol,
    /* 0x7f */  XK_Menu,	NoSymbol,	NoSymbol,	NoSymbol,
};

static int kbdUSBKeyDown(myPrivate *priv, int keyCode)
{
    CARD8  byte = keyCode >> 5;
    CARD32 bit  = 1 << (keyCode & 0x1f);

    if (byte > NUM_STATE_ENTRIES) return 0;
    return priv->kbdState[byte] & bit;
}

static void kbdUSBKeyState(myPrivate *priv, int type, int keyCode)
{
    CARD8  byte = keyCode >> 5;
    CARD32 bit  = 1 << (keyCode & 0x1f);

    if (byte > NUM_STATE_ENTRIES) return;
    if (type == KeyPress) priv->kbdState[byte] |= bit;
    else                  priv->kbdState[byte] &= ~bit;
}

/** Set the LEDs. */
void kbdUSBCtrl(DevicePtr pDev, KeybdCtrl *ctrl)
{
    GETPRIV;
    struct timeval     tv;
    struct input_event event;
    int                i, led;

    gettimeofday(&tv, NULL);
    for (i = 0; i < 5; i++) {
        event.time.tv_sec    = tv.tv_sec;
        event.time.tv_usec   = tv.tv_usec;
        event.type           = EV_LED;
        if (i == 0)      led = 1; /* LED_CAPSL == 0x01 */
        else if (i == 1) led = 0; /* LED_NUML  == 0x00 */
        else             led = i;
        event.code           = led;
        event.value          = !!(ctrl->leds & (1 << led));
        write(priv->fd, &event, sizeof(event));
    }
}

/** Initialize \a pDev using #usbInit. */
void kbdUSBInit(DevicePtr pDev)
{
    usbInit(pDev, usbKeyboard);
}

static void kbdUSBConvert(DevicePtr pDev,
                          unsigned int scanCode,
                          int value,
                          ENQUEUEPROC enqueue,
                          CHECKPROC checkspecial,
                          BLOCK block)
{
    GETPRIV;
    KeySymsPtr     pKeySyms = &priv->pDevice->key->curKeySyms;
    int            type;
    int            keyCode;
    KeySym         keySym   = NoSymbol;
    int            switching;

    /* Set up xEvent information */
    type   = value ? KeyPress : KeyRelease;
    keyCode = (scanCode & 0xff) + MIN_KEYCODE;

    /* Handle repeats */

    if (keyCode >= pKeySyms->minKeyCode && keyCode <= pKeySyms->maxKeyCode) {
        keySym = pKeySyms->map[(keyCode - pKeySyms->minKeyCode)
                               * pKeySyms->mapWidth];
#if 0
        switch (keySym) {
        case XK_Num_Lock:
        case XK_Scroll_Lock:
        case XK_Shift_Lock:
        case XK_Caps_Lock:
            /* Ignore releases and all but first press */
            if (kbdLinuxModIgnore(priv, &xE, keySym)) return;
            if (kbdLinuxKeyDown(priv, &xE)) xE.u.u.type = KeyRelease;
            else                            xE.u.u.type = KeyPress;
            break;
        }
#endif
        
        /* If key is already down, ignore or autorepeat */
        if (type == KeyPress && kbdUSBKeyDown(priv, keyCode)) {
            KbdFeedbackClassRec *feed = priv->pDevice->kbdfeed;

            /* No auto-repeat? */
            if ((feed && !feed->ctrl.autoRepeat)
                || priv->pDevice->key->modifierMap[keyCode]
                || (feed
                    && !(feed->ctrl.autoRepeats[keyCode >> 3]
                         & (1 << (keyCode & 7))))) return; /* Ignore */
            
            /* Do auto-repeat */
            enqueue(pDev, KeyRelease, keyCode, keySym, NULL, block);
            type = KeyPress;
        }
        
        /* If key is already up, ignore */
        if (type == KeyRelease && !kbdUSBKeyDown(priv, keyCode)) return;
    }

    switching = 0;
    if (checkspecial && type == KeyPress)
        switching = checkspecial(pDev, keySym);
    if (!switching) {
        if (enqueue)
            enqueue(pDev, type, keyCode, keySym, NULL, block);
        kbdUSBKeyState(priv, type, keyCode); /* Update our state bitmap */
    }
}

/** Read an event from the \a pDev device.  If the event is a motion
 * event, enqueue it with the \a motion function.  Otherwise, check for
 * special keys with the \a checkspecial function and enqueue the event
 * with the \a enqueue function.  The \a block type is passed to the
 * functions so that they may block SIGIO handling as appropriate to the
 * caller of this function. */
void kbdUSBRead(DevicePtr pDev,
                MOTIONPROC motion,
                ENQUEUEPROC enqueue,
                CHECKPROC checkspecial,
                BLOCK block)
{
    GETPRIV;
    struct input_event raw;

    while (read(priv->fd, &raw, sizeof(raw)) > 0) {
#if USB_KEYBOARD_DEBUG
        LOG3("KBD: type = %d, code = 0x%02x, value = %d\n",
             raw.type, raw.code, raw.value);
#endif
        kbdUSBConvert(pDev, raw.code, raw.value, enqueue, checkspecial, block);
    }
}

/** Turn \a pDev on (i.e., take input from \a pDev). */
int kbdUSBOn(DevicePtr pDev)
{
    GETPRIV;

    if (priv->fd < 0) kbdUSBInit(pDev);
    return priv->fd;
}

static void kbdUSBGetMap(DevicePtr pDev, KeySymsPtr pKeySyms, CARD8 *pModMap)
{
    KeySym        *k, *mapCopy;
    int           i;

    mapCopy = xalloc(sizeof(map));
    memcpy(mapCopy, map, sizeof(map));

    /* compute the modifier map */
    for (i = 0; i < MAP_LENGTH; i++)
        pModMap[i] = NoSymbol;  /* make sure it is restored */

    for (k = mapCopy, i = MIN_KEYCODE;
         i < NUM_KEYCODES + MIN_KEYCODE;
         i++, k += 4) {
        switch(*k) {
        case XK_Shift_L:
        case XK_Shift_R:     pModMap[i] = ShiftMask;      break;
        case XK_Control_L:
        case XK_Control_R:   pModMap[i] = ControlMask;    break;
        case XK_Caps_Lock:   pModMap[i] = LockMask;       break;
        case XK_Alt_L:
        case XK_Alt_R:       pModMap[i] = AltMask;        break;
        case XK_Num_Lock:    pModMap[i] = NumLockMask;    break;
        case XK_Scroll_Lock: pModMap[i] = ScrollLockMask; break;
        case XK_Kana_Lock:
        case XK_Kana_Shift:  pModMap[i] = KanaMask;       break;
        case XK_Mode_switch: pModMap[i] = AltLangMask;    break;
        }
    }

    pKeySyms->map        = mapCopy; /* Must be XFree'able */
    pKeySyms->mapWidth   = GLYPHS_PER_KEY;
    pKeySyms->minKeyCode = MIN_KEYCODE;
    pKeySyms->maxKeyCode = MAX_KEYCODE;
}

/** Fill the \a info structure with information needed to initialize \a
 * pDev. */ 
void kbdUSBGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info)
{
    info->keyboard         = 1;
    info->keyClass         = 1;
    kbdUSBGetMap(pDev, &info->keySyms, info->modMap);
    info->focusClass       = 1;
    info->kbdFeedbackClass = 1;
#ifdef XKB
    info->names.keycodes   = xstrdup("powerpcps2");
    info->force            = 1;
#endif
}