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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-sa1100/leds-badge4.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/arm/mach-sa1100/leds-badge4.c')
-rw-r--r--arch/arm/mach-sa1100/leds-badge4.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/leds-badge4.c b/arch/arm/mach-sa1100/leds-badge4.c
new file mode 100644
index 000000000000..0a8f87bb6c4f
--- /dev/null
+++ b/arch/arm/mach-sa1100/leds-badge4.c
@@ -0,0 +1,112 @@
1/*
2 * linux/arch/arm/mach-sa1100/leds-badge4.c
3 *
4 * Author: Christopher Hoover <ch@hpl.hp.com>
5 * Copyright (C) 2002 Hewlett-Packard Company
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 */
12
13#include <linux/config.h>
14#include <linux/init.h>
15
16#include <asm/hardware.h>
17#include <asm/leds.h>
18#include <asm/system.h>
19
20#include "leds.h"
21
22#define LED_STATE_ENABLED 1
23#define LED_STATE_CLAIMED 2
24
25static unsigned int led_state;
26static unsigned int hw_led_state;
27
28#define LED_RED GPIO_GPIO(7)
29#define LED_GREEN GPIO_GPIO(9)
30#define LED_MASK (LED_RED|LED_GREEN)
31
32#define LED_IDLE LED_GREEN
33#define LED_TIMER LED_RED
34
35void badge4_leds_event(led_event_t evt)
36{
37 unsigned long flags;
38
39 local_irq_save(flags);
40
41 switch (evt) {
42 case led_start:
43 GPDR |= LED_MASK;
44 hw_led_state = LED_MASK;
45 led_state = LED_STATE_ENABLED;
46 break;
47
48 case led_stop:
49 led_state &= ~LED_STATE_ENABLED;
50 break;
51
52 case led_claim:
53 led_state |= LED_STATE_CLAIMED;
54 hw_led_state = LED_MASK;
55 break;
56
57 case led_release:
58 led_state &= ~LED_STATE_CLAIMED;
59 hw_led_state = LED_MASK;
60 break;
61
62#ifdef CONFIG_LEDS_TIMER
63 case led_timer:
64 if (!(led_state & LED_STATE_CLAIMED))
65 hw_led_state ^= LED_TIMER;
66 break;
67#endif
68
69#ifdef CONFIG_LEDS_CPU
70 case led_idle_start:
71 /* LED off when system is idle */
72 if (!(led_state & LED_STATE_CLAIMED))
73 hw_led_state &= ~LED_IDLE;
74 break;
75
76 case led_idle_end:
77 if (!(led_state & LED_STATE_CLAIMED))
78 hw_led_state |= LED_IDLE;
79 break;
80#endif
81
82 case led_red_on:
83 if (!(led_state & LED_STATE_CLAIMED))
84 hw_led_state &= ~LED_RED;
85 break;
86
87 case led_red_off:
88 if (!(led_state & LED_STATE_CLAIMED))
89 hw_led_state |= LED_RED;
90 break;
91
92 case led_green_on:
93 if (!(led_state & LED_STATE_CLAIMED))
94 hw_led_state &= ~LED_GREEN;
95 break;
96
97 case led_green_off:
98 if (!(led_state & LED_STATE_CLAIMED))
99 hw_led_state |= LED_GREEN;
100 break;
101
102 default:
103 break;
104 }
105
106 if (led_state & LED_STATE_ENABLED) {
107 GPSR = hw_led_state;
108 GPCR = hw_led_state ^ LED_MASK;
109 }
110
111 local_irq_restore(flags);
112}