diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/frv/kernel/pm-mb93093.c |
Linux-2.6.12-rc2v2.6.12-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/frv/kernel/pm-mb93093.c')
-rw-r--r-- | arch/frv/kernel/pm-mb93093.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/frv/kernel/pm-mb93093.c b/arch/frv/kernel/pm-mb93093.c new file mode 100644 index 00000000000..34d01d7dcc3 --- /dev/null +++ b/arch/frv/kernel/pm-mb93093.c @@ -0,0 +1,66 @@ +/* + * FR-V MB93093 Power Management Routines + * + * Copyright (c) 2004 Red Hat, Inc. + * + * Written by: msalter@redhat.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License. + * + */ + +#include <linux/config.h> +#include <linux/init.h> +#include <linux/pm.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/sysctl.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <asm/uaccess.h> + +#include <asm/mb86943a.h> + +#include "local.h" + +static unsigned long imask; +/* + * Setup interrupt masks, etc to enable wakeup by power switch + */ +static void mb93093_power_switch_setup(void) +{ + /* mask all but FPGA interrupt sources. */ + imask = *(volatile unsigned long *)0xfeff9820; + *(volatile unsigned long *)0xfeff9820 = ~(1 << (IRQ_XIRQ2_LEVEL + 16)) & 0xfffe0000; +} + +/* + * Cleanup interrupt masks, etc after wakeup by power switch + */ +static void mb93093_power_switch_cleanup(void) +{ + *(volatile unsigned long *)0xfeff9820 = imask; +} + +/* + * Return non-zero if wakeup irq was caused by power switch + */ +static int mb93093_power_switch_check(void) +{ + return 1; +} + +/* + * Initialize power interface + */ +static int __init mb93093_pm_init(void) +{ + __power_switch_wake_setup = mb93093_power_switch_setup; + __power_switch_wake_check = mb93093_power_switch_check; + __power_switch_wake_cleanup = mb93093_power_switch_cleanup; + return 0; +} + +__initcall(mb93093_pm_init); + |