linux-imx

/*

 * ati_remote2 - ATI/Philips USB RF remote driver

 *

 * Copyright (C) 2005-2008 Ville Syrjala <syrjala@sci.fi>

 * Copyright (C) 2007-2008 Peter Stokes <linux@dadeos.co.uk>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2

 * as published by the Free Software Foundation.

 */

​

#include <linux/usb/input.h>

#include <linux/slab.h>

#include <linux/module.h>

​

#define DRIVER_DESC    "ATI/Philips USB RF remote driver"

​

MODULE_DESCRIPTION(DRIVER_DESC);

MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");

MODULE_LICENSE("GPL");

​

/*

 * ATI Remote Wonder II Channel Configuration

 *

 * The remote control can be assigned one of sixteen "channels" in order to facilitate

 * the use of multiple remote controls within range of each other.

 * A remote's "channel" may be altered by pressing and holding the "PC" button for

 * approximately 3 seconds, after which the button will slowly flash the count of the

 * currently configured "channel", using the numeric keypad enter a number between 1 and

 * 16 and then press the "PC" button again, the button will slowly flash the count of the

 * newly configured "channel".

 */

​

enum {

    ATI_REMOTE2_MAX_CHANNEL_MASK = 0xFFFF,

    ATI_REMOTE2_MAX_MODE_MASK = 0x1F,

};

​

static int ati_remote2_set_mask(const char *val,

                const struct kernel_param *kp,

                unsigned int max)

{

    unsigned int mask;

    int ret;

​

    if (!val)

        return -EINVAL;

​

    ret = kstrtouint(val, 0, &mask);

    if (ret)

        return ret;

​

    if (mask & ~max)

        return -EINVAL;

​

    *(unsigned int *)kp->arg = mask;

​

    return 0;

}

​

static int ati_remote2_set_channel_mask(const char *val,

                    const struct kernel_param *kp)

{