freebsd-dev/sys/dev/extres/clk/clk_div.h

49 lines
2.0 KiB
C
Raw Normal View History

/*-
* Copyright 2016 Michal Meloun <mmel@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 _DEV_EXTRES_CLK_DIV_H_
#define _DEV_EXTRES_CLK_DIV_H_
#include <dev/extres/clk/clk.h>
#define CLK_DIV_ZERO_BASED 0x0001 /* Zero based divider. */
struct clk_div_def {
struct clknode_init_def clkdef;
uint32_t offset; /* Divider register offset */
uint32_t i_shift; /* Pos of div bits in reg */
uint32_t i_width; /* Width of div bit field */
uint32_t f_shift; /* Fractional divide bits, */
uint32_t f_width; /* set to 0 for int divider */
int div_flags; /* Divider-specific flags */
};
int clknode_div_register(struct clkdom *clkdom, struct clk_div_def *clkdef);
#endif /*_DEV_EXTRES_CLK_DIV_H_*/