/*
 * Copyright (c) 2015 Michael Neumann
 * Copyright (c) 2016 François Tigeot
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _LINUX_FIRMWARE_H_
#define _LINUX_FIRMWARE_H_

#include <sys/bus.h>
#include <sys/firmware.h>
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/gfp.h>
#include <linux/device.h>

static inline int
request_firmware(const struct firmware **fw, const char *name, __unused struct device *dev) {
        *fw = firmware_get(name);
        if (*fw) {
                return 0;
        }
        return -ENOENT;
}

static inline int
request_firmware_nowait(struct module *module, bool uevent,
    const char *name, struct device *device, gfp_t gfp, void *context,
    void (*cont)(const struct firmware *fw, void *context))
{
        const struct firmware *fw;

        fw = firmware_get(name);
        if (fw == NULL) {
                return -ENOENT;
        }

        cont(fw, context);

        return 0;
}

static inline int
request_firmware_direct(const struct firmware **fw, const char *name,
    struct device *device)
{
        return request_firmware(fw, name, device);
}

static inline void
release_firmware(const struct firmware *fw) {
        if (fw != NULL) {
                firmware_put(fw, FIRMWARE_UNLOAD);
        }
}

#endif  /* _LINUX_FIRMWARE_H_ */