LXR linux/arch/arm/mach-omap1/leds-innovator.c

   1/*
   2 * linux/arch/arm/mach-omap1/leds-innovator.c
   3 */
   4#include <linux/init.h>
   5
   6#include <mach/hardware.h>
   7#include <asm/leds.h>
   8#include <asm/system.h>
   9
  10#include "leds.h"
  11
  12
  13#define LED_STATE_ENABLED       1
  14#define LED_STATE_CLAIMED       2
  15
  16static unsigned int led_state;
  17static unsigned int hw_led_state;
  18
  19void innovator_leds_event(led_event_t evt)
  20{
  21        unsigned long flags;
  22
  23        local_irq_save(flags);
  24
  25        switch (evt) {
  26        case led_start:
  27                hw_led_state = 0;
  28                led_state = LED_STATE_ENABLED;
  29                break;
  30
  31        case led_stop:
  32                led_state &= ~LED_STATE_ENABLED;
  33                hw_led_state = 0;
  34                break;
  35
  36        case led_claim:
  37                led_state |= LED_STATE_CLAIMED;
  38                hw_led_state = 0;
  39                break;
  40
  41        case led_release:
  42                led_state &= ~LED_STATE_CLAIMED;
  43                hw_led_state = 0;
  44                break;
  45
  46#ifdef CONFIG_LEDS_TIMER
  47        case led_timer:
  48                if (!(led_state & LED_STATE_CLAIMED))
  49                        hw_led_state ^= 0;
  50                break;
  51#endif
  52
  53#ifdef CONFIG_LEDS_CPU
  54        case led_idle_start:
  55                if (!(led_state & LED_STATE_CLAIMED))
  56                        hw_led_state |= 0;
  57                break;
  58
  59        case led_idle_end:
  60                if (!(led_state & LED_STATE_CLAIMED))
  61                        hw_led_state &= ~0;
  62                break;
  63#endif
  64
  65        case led_halted:
  66                break;
  67
  68        case led_green_on:
  69                if (led_state & LED_STATE_CLAIMED)
  70                        hw_led_state &= ~0;
  71                break;
  72
  73        case led_green_off:
  74                if (led_state & LED_STATE_CLAIMED)
  75                        hw_led_state |= 0;
  76                break;
  77
  78        case led_amber_on:
  79                break;
  80
  81        case led_amber_off:
  82                break;
  83
  84        case led_red_on:
  85                if (led_state & LED_STATE_CLAIMED)
  86                        hw_led_state &= ~0;
  87                break;
  88
  89        case led_red_off:
  90                if (led_state & LED_STATE_CLAIMED)
  91                        hw_led_state |= 0;
  92                break;
  93
  94        default:
  95                break;
  96        }
  97
  98        local_irq_restore(flags);
  99}
 100