| 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 | |
| 28 | void 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 | } |
| 40 | EXPORT_SYMBOL(ifxmips_pmu_enable); |
| 41 | |
| 42 | void ifxmips_pmu_disable(unsigned int module) |
| 43 | { |
| 44 | ifxmips_w32(ifxmips_r32(IFXMIPS_PMU_PWDCR) | module, IFXMIPS_PMU_PWDCR); |
| 45 | } |
| 46 | EXPORT_SYMBOL(ifxmips_pmu_disable); |
| 47 | |
