122 lines
2.0 KiB
C
122 lines
2.0 KiB
C
/*
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* linux/arch/arm/mach-pxa/leds-mainstone.c
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*
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* Author: Nicolas Pitre
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* Created: Nov 05, 2002
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* Copyright: MontaVista Software Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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 <asm/arch/pxa-regs.h>
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#include <asm/arch/mainstone.h>
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#include "leds.h"
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/* 8 discrete leds available for general use: */
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#define D28 (1 << 0)
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#define D27 (1 << 1)
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#define D26 (1 << 2)
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#define D25 (1 << 3)
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#define D24 (1 << 4)
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#define D23 (1 << 5)
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#define D22 (1 << 6)
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#define D21 (1 << 7)
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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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void mainstone_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 = 0;
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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 = 0;
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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 = 0;
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break;
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#ifdef CONFIG_LEDS_TIMER
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case led_timer:
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hw_led_state ^= D26;
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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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hw_led_state &= ~D27;
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break;
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case led_idle_end:
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hw_led_state |= D27;
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break;
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#endif
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case led_halted:
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break;
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case led_green_on:
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hw_led_state |= D21;
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break;
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case led_green_off:
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hw_led_state &= ~D21;
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break;
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case led_amber_on:
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hw_led_state |= D22;
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break;
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case led_amber_off:
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hw_led_state &= ~D22;
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break;
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case led_red_on:
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hw_led_state |= D23;
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break;
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case led_red_off:
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hw_led_state &= ~D23;
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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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MST_LEDCTRL = (MST_LEDCTRL | 0xff) & ~hw_led_state;
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else
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MST_LEDCTRL |= 0xff;
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local_irq_restore(flags);
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}
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