projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/arch/arm/mach-ebsa110/leds.c | |
| 3 | * | |
| 4 | * Copyright (C) 1998 Russell King | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | * | |
| 10 | * EBSA-110 LED control routines. We use the led as follows: | |
| 11 | * | |
| 12 | * - Red - toggles state every 50 timer interrupts | |
| 13 | */ | |
| 14 | #include <linux/module.h> | |
| 15 | #include <linux/spinlock.h> | |
| 16 | #include <linux/init.h> | |
| 17 | ||
| a09e64fb | 18 | #include <mach/hardware.h> |
| 1da177e4 LT |
19 | #include <asm/leds.h> |
| 20 | #include <asm/system.h> | |
| 21 | #include <asm/mach-types.h> | |
| 22 | ||
| 23 | static spinlock_t leds_lock; | |
| 24 | ||
| 25 | static void ebsa110_leds_event(led_event_t ledevt) | |
| 26 | { | |
| 27 | unsigned long flags; | |
| 28 | ||
| 29 | spin_lock_irqsave(&leds_lock, flags); | |
| 30 | ||
| 31 | switch(ledevt) { | |
| 32 | case led_timer: | |
| 33 | *(volatile unsigned char *)SOFT_BASE ^= 128; | |
| 34 | break; | |
| 35 | ||
| 36 | default: | |
| 37 | break; | |
| 38 | } | |
| 39 | ||
| 40 | spin_unlock_irqrestore(&leds_lock, flags); | |
| 41 | } | |
| 42 | ||
| 43 | static int __init leds_init(void) | |
| 44 | { | |
| 45 | if (machine_is_ebsa110()) | |
| 46 | leds_event = ebsa110_leds_event; | |
| 47 | ||
| 48 | return 0; | |
| 49 | } | |
| 50 | ||
| 51 | __initcall(leds_init); |