125 строки
2.1 KiB
C
125 строки
2.1 KiB
C
/*
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* linux/arch/arm/mach-pxa/leds-lubbock.c
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*
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* Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu>
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*
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* Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com>
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*
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* Original (leds-footbridge.c) by Russell King
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*
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* Major surgery on April 2004 by Nicolas Pitre for less global
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* namespace collision. Mostly adapted the Mainstone version.
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*/
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <asm/leds.h>
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#include <mach/pxa25x.h>
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#include <mach/lubbock.h>
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#include "leds.h"
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/*
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* 8 discrete leds available for general use:
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*
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* Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
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* so be sure to not monkey with them here.
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*/
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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 lubbock_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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LUB_DISC_BLNK_LED = (LUB_DISC_BLNK_LED | 0xff) & ~hw_led_state;
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else
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LUB_DISC_BLNK_LED |= 0xff;
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local_irq_restore(flags);
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}
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