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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-sa1100/leds-badge4.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-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.c | 112 |
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 0000000..0a8f87b --- /dev/null +++ b/arch/arm/mach-sa1100/leds-badge4.c @@ -0,0 +1,112 @@ +/* + * linux/arch/arm/mach-sa1100/leds-badge4.c + * + * Author: Christopher Hoover <ch@hpl.hp.com> + * Copyright (C) 2002 Hewlett-Packard Company + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/config.h> +#include <linux/init.h> + +#include <asm/hardware.h> +#include <asm/leds.h> +#include <asm/system.h> + +#include "leds.h" + +#define LED_STATE_ENABLED 1 +#define LED_STATE_CLAIMED 2 + +static unsigned int led_state; +static unsigned int hw_led_state; + +#define LED_RED GPIO_GPIO(7) +#define LED_GREEN GPIO_GPIO(9) +#define LED_MASK (LED_RED|LED_GREEN) + +#define LED_IDLE LED_GREEN +#define LED_TIMER LED_RED + +void badge4_leds_event(led_event_t evt) +{ + unsigned long flags; + + local_irq_save(flags); + + switch (evt) { + case led_start: + GPDR |= LED_MASK; + hw_led_state = LED_MASK; + led_state = LED_STATE_ENABLED; + break; + + case led_stop: + led_state &= ~LED_STATE_ENABLED; + break; + + case led_claim: + led_state |= LED_STATE_CLAIMED; + hw_led_state = LED_MASK; + break; + + case led_release: + led_state &= ~LED_STATE_CLAIMED; + hw_led_state = LED_MASK; + break; + +#ifdef CONFIG_LEDS_TIMER + case led_timer: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state ^= LED_TIMER; + break; +#endif + +#ifdef CONFIG_LEDS_CPU + case led_idle_start: + /* LED off when system is idle */ + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~LED_IDLE; + break; + + case led_idle_end: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= LED_IDLE; + break; +#endif + + case led_red_on: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~LED_RED; + break; + + case led_red_off: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= LED_RED; + break; + + case led_green_on: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state &= ~LED_GREEN; + break; + + case led_green_off: + if (!(led_state & LED_STATE_CLAIMED)) + hw_led_state |= LED_GREEN; + break; + + default: + break; + } + + if (led_state & LED_STATE_ENABLED) { + GPSR = hw_led_state; + GPCR = hw_led_state ^ LED_MASK; + } + + local_irq_restore(flags); +} |