nfsd4: typo logical vs bitwise negate for want_mask
[linux-btrfs-devel.git] / arch / sh / kernel / cpu / sh3 / clock-sh7710.c
blob29a87d8946a42e66e81e69fb80da9ce4fd8e431c
1 /*
2 * arch/sh/kernel/cpu/sh3/clock-sh7710.c
4 * SH7710 support for the clock framework
6 * Copyright (C) 2005 Paul Mundt
8 * FRQCR parsing hacked out of arch/sh/kernel/time.c
10 * Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka
11 * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
12 * Copyright (C) 2002, 2003, 2004 Paul Mundt
13 * Copyright (C) 2002 M. R. Brown <mrbrown@linux-sh.org>
15 * This file is subject to the terms and conditions of the GNU General Public
16 * License. See the file "COPYING" in the main directory of this archive
17 * for more details.
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <asm/clock.h>
22 #include <asm/freq.h>
23 #include <asm/io.h>
25 static int md_table[] = { 1, 2, 3, 4, 6, 8, 12 };
27 static void master_clk_init(struct clk *clk)
29 clk->rate *= md_table[__raw_readw(FRQCR) & 0x0007];
32 static struct clk_ops sh7710_master_clk_ops = {
33 .init = master_clk_init,
36 static unsigned long module_clk_recalc(struct clk *clk)
38 int idx = (__raw_readw(FRQCR) & 0x0007);
39 return clk->parent->rate / md_table[idx];
42 static struct clk_ops sh7710_module_clk_ops = {
43 .recalc = module_clk_recalc,
46 static unsigned long bus_clk_recalc(struct clk *clk)
48 int idx = (__raw_readw(FRQCR) & 0x0700) >> 8;
49 return clk->parent->rate / md_table[idx];
52 static struct clk_ops sh7710_bus_clk_ops = {
53 .recalc = bus_clk_recalc,
56 static unsigned long cpu_clk_recalc(struct clk *clk)
58 int idx = (__raw_readw(FRQCR) & 0x0070) >> 4;
59 return clk->parent->rate / md_table[idx];
62 static struct clk_ops sh7710_cpu_clk_ops = {
63 .recalc = cpu_clk_recalc,
66 static struct clk_ops *sh7710_clk_ops[] = {
67 &sh7710_master_clk_ops,
68 &sh7710_module_clk_ops,
69 &sh7710_bus_clk_ops,
70 &sh7710_cpu_clk_ops,
73 void __init arch_init_clk_ops(struct clk_ops **ops, int idx)
75 if (idx < ARRAY_SIZE(sh7710_clk_ops))
76 *ops = sh7710_clk_ops[idx];