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