clk_div.h

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    1 /*-
    2  * Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #ifndef _DEV_EXTRES_CLK_DIV_H_
   30 #define _DEV_EXTRES_CLK_DIV_H_
   31 
   32 #include <dev/extres/clk/clk.h>
   33 
   34 #define CLK_DIV_ZERO_BASED      0x0001 /* Zero based divider. */
   35 #define CLK_DIV_WITH_TABLE      0x0002 /* Table to lookup the real value */
   36 
   37 struct clk_div_table {
   38         uint32_t        value;
   39         uint32_t        divider;
   40 };
   41 
   42 struct clk_div_def {
   43         struct clknode_init_def clkdef;
   44         uint32_t                offset;         /* Divider register offset */
   45         uint32_t                i_shift;        /* Pos of div bits in reg */
   46         uint32_t                i_width;        /* Width of div bit field */
   47         uint32_t                f_shift;        /* Fractional divide bits, */
   48         uint32_t                f_width;        /* set to 0 for int divider */
   49         int                     div_flags;      /* Divider-specific flags */
   50         struct clk_div_table    *div_table;     /* Divider table */
   51 };
   52 
   53 int clknode_div_register(struct clkdom *clkdom, struct clk_div_def *clkdef);
   54 
   55 #endif /*_DEV_EXTRES_CLK_DIV_H_*/

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FreeBSD/Linux Kernel Cross Reference sys/dev/extres/clk/clk_div.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/extres/clk/clk_div.h