FreeBSD/Linux Kernel Cross Reference
sys/dev/fdt/fdt_clock.h

     /*-
      * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
      * 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, 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.
     *
     * $FreeBSD$
     */
    
    #ifndef DEV_FDT_CLOCK_H
    #define DEV_FDT_CLOCK_H
    
    #include "fdt_clock_if.h"
    
    /*
     * Get info about the Nth clock listed in consumer's "clocks" property.
     *
     * Returns 0 on success, ENXIO if clock #n not found.
     */
    int fdt_clock_get_info(device_t consumer, int n, struct fdt_clock_info *info);
    
    /*
     * Look up "clocks" property in consumer's fdt data and enable or disable all
     * configured clocks.
     */
    int fdt_clock_enable_all(device_t consumer);
    int fdt_clock_disable_all(device_t consumer);
    
    /*
     * [Un]register the given device instance as a driver that implements the
     * fdt_clock interface.
     */
    void fdt_clock_register_provider(device_t provider);
    void fdt_clock_unregister_provider(device_t provider);
    
    #endif /* DEV_FDT_CLOCK_H */
    

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