diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/vr41xx/common/pmu.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/mips/vr41xx/common/pmu.c')
-rw-r--r-- | arch/mips/vr41xx/common/pmu.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/arch/mips/vr41xx/common/pmu.c b/arch/mips/vr41xx/common/pmu.c new file mode 100644 index 000000000000..c5f1043de938 --- /dev/null +++ b/arch/mips/vr41xx/common/pmu.c @@ -0,0 +1,81 @@ +/* + * pmu.c, Power Management Unit routines for NEC VR4100 series. + * + * Copyright (C) 2003-2004 Yoichi Yuasa <yuasa@hh.iij4u.or.jp> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/smp.h> +#include <linux/types.h> + +#include <asm/cpu.h> +#include <asm/io.h> +#include <asm/reboot.h> +#include <asm/system.h> + +#define PMUCNT2REG KSEG1ADDR(0x0f0000c6) + #define SOFTRST 0x0010 + +static inline void software_reset(void) +{ + uint16_t val; + + switch (current_cpu_data.cputype) { + case CPU_VR4122: + case CPU_VR4131: + case CPU_VR4133: + val = readw(PMUCNT2REG); + val |= SOFTRST; + writew(val, PMUCNT2REG); + break; + default: + break; + } +} + +static void vr41xx_restart(char *command) +{ + local_irq_disable(); + software_reset(); + printk(KERN_NOTICE "\nYou can reset your system\n"); + while (1) ; +} + +static void vr41xx_halt(void) +{ + local_irq_disable(); + printk(KERN_NOTICE "\nYou can turn off the power supply\n"); + while (1) ; +} + +static void vr41xx_power_off(void) +{ + local_irq_disable(); + printk(KERN_NOTICE "\nYou can turn off the power supply\n"); + while (1) ; +} + +static int __init vr41xx_pmu_init(void) +{ + _machine_restart = vr41xx_restart; + _machine_halt = vr41xx_halt; + _machine_power_off = vr41xx_power_off; + + return 0; +} + +early_initcall(vr41xx_pmu_init); |