diff options
Diffstat (limited to 'arch/arm/mach-ebsa110/leds.c')
-rw-r--r-- | arch/arm/mach-ebsa110/leds.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mach-ebsa110/leds.c b/arch/arm/mach-ebsa110/leds.c new file mode 100644 index 000000000000..3bc8c5e708e6 --- /dev/null +++ b/arch/arm/mach-ebsa110/leds.c | |||
@@ -0,0 +1,51 @@ | |||
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 | |||
18 | #include <asm/hardware.h> | ||
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); | ||