FreeBSD/Linux Kernel Cross Reference
sys/arm/freescale/imx/imx_iomuxvar.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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 IMX_IOMUXVAR_H
    #define IMX_IOMUXVAR_H
    
    /*
     * IOMUX interface functions
     */
    void     iomux_set_function(u_int pin, u_int fn);
    void     iomux_set_pad(u_int pin, u_int cfg);
    u_int    iomux_get_pad_config(u_int pin);
    
    /*
     * The IOMUX Controller device has a small set of "general purpose registers" 
     * which control various aspects of SoC operation that really have nothing to do
     * with IO pin assignments or pad control.  These functions let other soc level
     * code manipulate these values.
     */
    uint32_t imx_iomux_gpr_get(u_int regaddr);
    void     imx_iomux_gpr_set(u_int regaddr, uint32_t val);
    void     imx_iomux_gpr_set_masked(u_int regaddr, uint32_t clrbits, uint32_t setbits);
    
    #endif

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