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112 lines
2.8 KiB
112 lines
2.8 KiB
20 years ago
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/*
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* linux/arch/arm/mach-sa1100/leds-cerf.c
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*
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* Author: ???
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*/
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#include <linux/config.h>
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#include <linux/init.h>
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#include <asm/hardware.h>
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#include <asm/leds.h>
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#include <asm/system.h>
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#include "leds.h"
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#define LED_STATE_ENABLED 1
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#define LED_STATE_CLAIMED 2
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static unsigned int led_state;
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static unsigned int hw_led_state;
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#define LED_D0 GPIO_GPIO(0)
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#define LED_D1 GPIO_GPIO(1)
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#define LED_D2 GPIO_GPIO(2)
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#define LED_D3 GPIO_GPIO(3)
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#define LED_MASK (LED_D0|LED_D1|LED_D2|LED_D3)
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void cerf_leds_event(led_event_t evt)
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{
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unsigned long flags;
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local_irq_save(flags);
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switch (evt) {
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case led_start:
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hw_led_state = LED_MASK;
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led_state = LED_STATE_ENABLED;
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break;
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case led_stop:
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led_state &= ~LED_STATE_ENABLED;
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break;
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case led_claim:
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led_state |= LED_STATE_CLAIMED;
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hw_led_state = LED_MASK;
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break;
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case led_release:
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led_state &= ~LED_STATE_CLAIMED;
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hw_led_state = LED_MASK;
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break;
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#ifdef CONFIG_LEDS_TIMER
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case led_timer:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state ^= LED_D0;
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break;
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#endif
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#ifdef CONFIG_LEDS_CPU
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case led_idle_start:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state &= ~LED_D1;
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break;
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case led_idle_end:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state |= LED_D1;
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break;
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#endif
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case led_green_on:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state &= ~LED_D2;
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break;
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case led_green_off:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state |= LED_D2;
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break;
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case led_amber_on:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state &= ~LED_D3;
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break;
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case led_amber_off:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state |= LED_D3;
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break;
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case led_red_on:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state &= ~LED_D1;
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break;
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case led_red_off:
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if (!(led_state & LED_STATE_CLAIMED))
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hw_led_state |= LED_D1;
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break;
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default:
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break;
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}
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if (led_state & LED_STATE_ENABLED) {
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GPSR = hw_led_state;
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GPCR = hw_led_state ^ LED_MASK;
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}
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local_irq_restore(flags);
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}
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