kernel/linux/arch/arm/mach-sa1100/leds-simpad.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/leds-simpad.c
   3  *
   4  * Author: Juergen Messerer <juergen.messerer@siemens.ch>
   5  */
   6 #include <linux/config.h>
   7 #include <linux/init.h>
   8
   9 #include <asm/hardware.h>
  10 #include <asm/leds.h>
  11 #include <asm/system.h>
  12 #include <asm/arch/simpad.h>
  13
  14 #include "leds.h"
  15
  16
  17 #define LED_STATE_ENABLED       1
  18 #define LED_STATE_CLAIMED       2
  19
  20 static unsigned int led_state;
  21 static unsigned int hw_led_state;
  22
  23 #define LED_GREEN       (1)
  24 #define LED_MASK        (1)
  25
  26 extern void set_cs3_bit(int value);
  27 extern void clear_cs3_bit(int value);
  28
  29 void simpad_leds_event(led_event_t evt)
  30 {
  31         unsigned long flags;
  32
  33         //local_irq_save(flags);
  34
  35         switch (evt)
  36         {
  37         case led_start:
  38                 hw_led_state = LED_GREEN;
  39                 led_state = LED_STATE_ENABLED;
  40                 break;
  41
  42         case led_stop:
  43                 led_state &= ~LED_STATE_ENABLED;
  44                 break;
  45
  46         case led_claim:
  47                 led_state |= LED_STATE_CLAIMED;
  48                 hw_led_state = LED_GREEN;
  49                 break;
  50
  51         case led_release:
  52                 led_state &= ~LED_STATE_CLAIMED;
  53                 hw_led_state = LED_GREEN;
  54                 break;
  55
  56 #ifdef CONFIG_LEDS_TIMER
  57         case led_timer:
  58                 if (!(led_state & LED_STATE_CLAIMED))
  59                         hw_led_state ^= LED_GREEN;
  60                 break;
  61 #endif
  62
  63 #ifdef CONFIG_LEDS_CPU
  64         case led_idle_start:
  65                 break;
  66
  67         case led_idle_end:
  68                 break;
  69 #endif
  70
  71         case led_halted:
  72                 break;
  73
  74         case led_green_on:
  75                 if (led_state & LED_STATE_CLAIMED)
  76                         hw_led_state |= LED_GREEN;
  77                 break;
  78
  79         case led_green_off:
  80                 if (led_state & LED_STATE_CLAIMED)
  81                         hw_led_state &= ~LED_GREEN;
  82                 break;
  83
  84         case led_amber_on:
  85                 break;
  86
  87         case led_amber_off:
  88                 break;
  89
  90         case led_red_on:
  91                 break;
  92
  93         case led_red_off:
  94                 break;
  95
  96         default:
  97                 break;
  98         }
  99
 100         if  (led_state & LED_STATE_ENABLED)
 101                 set_cs3_bit(LED2_ON);
 102         else
 103                 clear_cs3_bit(LED2_ON);
 104         //local_irq_restore(flags);
 105 }
 106