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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/arm/freescale/imx/imx_iomuxvar.h
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/*-

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 * Copyright (c) 2014 Ian Lepore <[email protected]>

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 * All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#ifndef	IMX_IOMUXVAR_H

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#define	IMX_IOMUXVAR_H

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/*

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 * IOMUX interface functions

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 */

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void     iomux_set_function(u_int pin, u_int fn);

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void     iomux_set_pad(u_int pin, u_int cfg);

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u_int    iomux_get_pad_config(u_int pin);

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/*

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 * The IOMUX Controller device has a small set of "general purpose registers" 

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 * which control various aspects of SoC operation that really have nothing to do

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 * with IO pin assignments or pad control.  These functions let other soc level

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 * code manipulate these values.

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 */

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uint32_t imx_iomux_gpr_get(u_int regaddr);

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void     imx_iomux_gpr_set(u_int regaddr, uint32_t val);

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void     imx_iomux_gpr_set_masked(u_int regaddr, uint32_t clrbits, uint32_t setbits);

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#endif

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