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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-pxa/leds-lubbock.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-pxa/leds-lubbock.c')
-rw-r--r--arch/arm/mach-pxa/leds-lubbock.c126
1 files changed, 126 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/leds-lubbock.c b/arch/arm/mach-pxa/leds-lubbock.c
new file mode 100644
index 000000000000..05cf56059a0f
--- /dev/null
+++ b/arch/arm/mach-pxa/leds-lubbock.c
@@ -0,0 +1,126 @@
1/*
2 * linux/arch/arm/mach-pxa/leds-lubbock.c
3 *
4 * Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu>
5 *
6 * Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com>
7 *
8 * Original (leds-footbridge.c) by Russell King
9 *
10 * Major surgery on April 2004 by Nicolas Pitre for less global
11 * namespace collision. Mostly adapted the Mainstone version.
12 */
13
14#include <linux/config.h>
15#include <linux/init.h>
16
17#include <asm/hardware.h>
18#include <asm/leds.h>
19#include <asm/system.h>
20#include <asm/arch/pxa-regs.h>
21#include <asm/arch/lubbock.h>
22
23#include "leds.h"
24
25/*
26 * 8 discrete leds available for general use:
27 *
28 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
29 * so be sure to not monkey with them here.
30 */
31
32#define D28 (1 << 0)
33#define D27 (1 << 1)
34#define D26 (1 << 2)
35#define D25 (1 << 3)
36#define D24 (1 << 4)
37#define D23 (1 << 5)
38#define D22 (1 << 6)
39#define D21 (1 << 7)
40
41#define LED_STATE_ENABLED 1
42#define LED_STATE_CLAIMED 2
43
44static unsigned int led_state;
45static unsigned int hw_led_state;
46
47void lubbock_leds_event(led_event_t evt)
48{
49 unsigned long flags;
50
51 local_irq_save(flags);
52
53 switch (evt) {
54 case led_start:
55 hw_led_state = 0;
56 led_state = LED_STATE_ENABLED;
57 break;
58
59 case led_stop:
60 led_state &= ~LED_STATE_ENABLED;
61 break;
62
63 case led_claim:
64 led_state |= LED_STATE_CLAIMED;
65 hw_led_state = 0;
66 break;
67
68 case led_release:
69 led_state &= ~LED_STATE_CLAIMED;
70 hw_led_state = 0;
71 break;
72
73#ifdef CONFIG_LEDS_TIMER
74 case led_timer:
75 hw_led_state ^= D26;
76 break;
77#endif
78
79#ifdef CONFIG_LEDS_CPU
80 case led_idle_start:
81 hw_led_state &= ~D27;
82 break;
83
84 case led_idle_end:
85 hw_led_state |= D27;
86 break;
87#endif
88
89 case led_halted:
90 break;
91
92 case led_green_on:
93 hw_led_state |= D21;
94 break;
95
96 case led_green_off:
97 hw_led_state &= ~D21;
98 break;
99
100 case led_amber_on:
101 hw_led_state |= D22;
102 break;
103
104 case led_amber_off:
105 hw_led_state &= ~D22;
106 break;
107
108 case led_red_on:
109 hw_led_state |= D23;
110 break;
111
112 case led_red_off:
113 hw_led_state &= ~D23;
114 break;
115
116 default:
117 break;
118 }
119
120 if (led_state & LED_STATE_ENABLED)
121 LUB_DISC_BLNK_LED = (LUB_DISC_BLNK_LED | 0xff) & ~hw_led_state;
122 else
123 LUB_DISC_BLNK_LED |= 0xff;
124
125 local_irq_restore(flags);
126}