source: trunk/target/linux/ifxmips/files/arch/mips/ifxmips/pmu.c @ 18010

Last change on this file since 18010 was 18010, checked in by blogic, 7 years ago

ifxmips: move header files, split up patches, rename some files

File size: 1.5 KB
Line 
1/*
2 *   This program is free software; you can redistribute it and/or modify
3 *   it under the terms of the GNU General Public License as published by
4 *   the Free Software Foundation; either version 2 of the License, or
5 *   (at your option) any later version.
6 *
7 *   This program is distributed in the hope that it will be useful,
8 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
9 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10 *   GNU General Public License for more details.
11 *
12 *   You should have received a copy of the GNU General Public License
13 *   along with this program; if not, write to the Free Software
14 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
15 *
16 *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
17 *
18 *       code used for handling the power management unit of the danube. using
19 *       the pmu we can turn the power of the seperate ip cores on/off.
20 */
21
22#include <linux/kernel.h>
23#include <linux/module.h>
24#include <linux/version.h>
25
26#include <ifxmips.h>
27
28void ifxmips_pmu_enable(unsigned int module)
29{
30        int err = 1000000;
31
32        ifxmips_w32(ifxmips_r32(IFXMIPS_PMU_PWDCR) & ~module,
33                IFXMIPS_PMU_PWDCR);
34        while (--err && (ifxmips_r32(IFXMIPS_PMU_PWDSR) & module))
35                ;
36
37        if (!err)
38                panic("activating PMU module failed!");
39}
40EXPORT_SYMBOL(ifxmips_pmu_enable);
41
42void ifxmips_pmu_disable(unsigned int module)
43{
44        ifxmips_w32(ifxmips_r32(IFXMIPS_PMU_PWDCR) | module, IFXMIPS_PMU_PWDCR);
45}
46EXPORT_SYMBOL(ifxmips_pmu_disable);
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