diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-integrator/leds.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-integrator/leds.c')
-rw-r--r-- | arch/arm/mach-integrator/leds.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/arch/arm/mach-integrator/leds.c b/arch/arm/mach-integrator/leds.c new file mode 100644 index 000000000000..9d182b77b312 --- /dev/null +++ b/arch/arm/mach-integrator/leds.c | |||
@@ -0,0 +1,88 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-integrator/leds.c | ||
3 | * | ||
4 | * Integrator/AP and Integrator/CP LED control routines | ||
5 | * | ||
6 | * Copyright (C) 1999 ARM Limited | ||
7 | * Copyright (C) 2000 Deep Blue Solutions Ltd | ||
8 | * | ||
9 | * This program is free software; you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License as published by | ||
11 | * the Free Software Foundation; either version 2 of the License, or | ||
12 | * (at your option) any later version. | ||
13 | * | ||
14 | * This program is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 | * GNU General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with this program; if not, write to the Free Software | ||
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
22 | */ | ||
23 | #include <linux/kernel.h> | ||
24 | #include <linux/init.h> | ||
25 | |||
26 | #include <asm/hardware.h> | ||
27 | #include <asm/io.h> | ||
28 | #include <asm/leds.h> | ||
29 | #include <asm/system.h> | ||
30 | #include <asm/mach-types.h> | ||
31 | #include <asm/arch/cm.h> | ||
32 | |||
33 | static int saved_leds; | ||
34 | |||
35 | static void integrator_leds_event(led_event_t ledevt) | ||
36 | { | ||
37 | unsigned long flags; | ||
38 | const unsigned int dbg_base = IO_ADDRESS(INTEGRATOR_DBG_BASE); | ||
39 | unsigned int update_alpha_leds; | ||
40 | |||
41 | // yup, change the LEDs | ||
42 | local_irq_save(flags); | ||
43 | update_alpha_leds = 0; | ||
44 | |||
45 | switch(ledevt) { | ||
46 | case led_idle_start: | ||
47 | cm_control(CM_CTRL_LED, 0); | ||
48 | break; | ||
49 | |||
50 | case led_idle_end: | ||
51 | cm_control(CM_CTRL_LED, CM_CTRL_LED); | ||
52 | break; | ||
53 | |||
54 | case led_timer: | ||
55 | saved_leds ^= GREEN_LED; | ||
56 | update_alpha_leds = 1; | ||
57 | break; | ||
58 | |||
59 | case led_red_on: | ||
60 | saved_leds |= RED_LED; | ||
61 | update_alpha_leds = 1; | ||
62 | break; | ||
63 | |||
64 | case led_red_off: | ||
65 | saved_leds &= ~RED_LED; | ||
66 | update_alpha_leds = 1; | ||
67 | break; | ||
68 | |||
69 | default: | ||
70 | break; | ||
71 | } | ||
72 | |||
73 | if (update_alpha_leds) { | ||
74 | while (__raw_readl(dbg_base + INTEGRATOR_DBG_ALPHA_OFFSET) & 1); | ||
75 | __raw_writel(saved_leds, dbg_base + INTEGRATOR_DBG_LEDS_OFFSET); | ||
76 | } | ||
77 | local_irq_restore(flags); | ||
78 | } | ||
79 | |||
80 | static int __init leds_init(void) | ||
81 | { | ||
82 | if (machine_is_integrator() || machine_is_cintegrator()) | ||
83 | leds_event = integrator_leds_event; | ||
84 | |||
85 | return 0; | ||
86 | } | ||
87 | |||
88 | __initcall(leds_init); | ||