xenocara/xserver/hw/dmx/input/usb-other.c

/*
 * Copyright 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 non-keyboard,
 * non-mouse USB device (e.g., a joystick or gamepad). */

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

#include "usb-private.h"

/*****************************************************************************/
/* 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 "dmxinputinit.h"
#include "usb-other.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. */
/*****************************************************************************/

/** Read the USB device using #usbRead. */
void
othUSBRead(DevicePtr pDev,
           MOTIONPROC motion,
           ENQUEUEPROC enqueue, CHECKPROC checkspecial, BLOCK block)
{
    usbRead(pDev, motion, enqueue, 0xffff, block);
}

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

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

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

/** Fill the \a info structure with information needed to initialize \a
 * pDev. */
void
othUSBGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info)
{
    GETPRIV;
    int i, j;
    static KeySym keyboard_mapping = NoSymbol;
    int absolute[5];

#define test_bit(bit) (priv->mask[(bit)/8] & (1 << ((bit)%8)))

    /* Some USB mice devices return key
     * events from their pair'd
     * keyboard...  */
    info->keyClass = 1;
    info->keySyms.minKeyCode = 8;
    info->keySyms.maxKeyCode = 8;
    info->keySyms.mapWidth = 1;
    info->keySyms.map = &keyboard_mapping;

    for (i = 0; i < EV_MAX; i++) {
        if (test_bit(i)) {
            switch (i) {
            case EV_KEY:
                /* See above */
                break;
            case EV_REL:
                info->valuatorClass = 1;
                if (info->numRelAxes + info->numAbsAxes > DMX_MAX_AXES - 1) {
                    info->numRelAxes = DMX_MAX_AXES - info->numAbsAxes - 1;
                    dmxLog(dmxWarning, "Can only use %d relative axes\n",
                           info->numRelAxes);
                }
                else
                    info->numRelAxes = priv->numRel;
                info->minval[0] = 0;
                info->maxval[0] = 0;
                info->res[0] = 1;
                info->minres[0] = 0;
                info->maxres[0] = 1;
                break;
            case EV_ABS:
                info->valuatorClass = 1;
                if (info->numRelAxes + info->numAbsAxes > DMX_MAX_AXES - 1) {
                    info->numAbsAxes = DMX_MAX_AXES - info->numRelAxes - 1;
                    dmxLog(dmxWarning, "Can only use %d absolute axes\n",
                           info->numAbsAxes);
                }
                else
                    info->numAbsAxes = priv->numAbs;
                for (j = 0; j < info->numAbsAxes; j++) {
                    ioctl(priv->fd, EVIOCGABS(j), absolute);
                    info->minval[1 + j] = absolute[1];
                    info->maxval[1 + j] = absolute[2];
                    info->res[1 + j] = absolute[3];
                    info->minres[1 + j] = absolute[3];
                    info->maxres[1 + j] = absolute[3];
                }
                break;
            case EV_LED:
                info->ledFeedbackClass = 0;     /* Not supported at this time */
                break;
            case EV_SND:
                info->belFeedbackClass = 0;     /* Not supported at this time */
                break;
            }
        }
    }
}