2 * Copyright 2016 Michal Meloun <mmel@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #ifndef _DEV_EXTRES_CLK_DIV_H_
30 #define _DEV_EXTRES_CLK_DIV_H_
32 #include <dev/extres/clk/clk.h>
34 #define CLK_DIV_ZERO_BASED 0x0001 /* Zero based divider. */
35 #define CLK_DIV_WITH_TABLE 0x0002 /* Table to lookup the real value */
37 struct clk_div_table {
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 */
53 int clknode_div_register(struct clkdom *clkdom, struct clk_div_def *clkdef);
55 #endif /*_DEV_EXTRES_CLK_DIV_H_*/