kernel/linux/arch/arm/mach-omap/leds-perseus2.c

   1 /*
   2  * linux/arch/arm/mach-omap/leds-perseus2.c
   3  *
   4  * Copyright 2003 by Texas Instruments Incorporated
   5  *
   6  */
   7 #include <linux/config.h>
   8 #include <linux/init.h>
   9 #include <linux/kernel_stat.h>
  10 #include <linux/sched.h>
  11 #include <linux/version.h>
  12
  13 #include <asm/io.h>
  14 #include <asm/hardware.h>
  15 #include <asm/leds.h>
  16 #include <asm/system.h>
  17
  18 #include "leds.h"
  19
  20 void perseus2_leds_event(led_event_t evt)
  21 {
  22         unsigned long flags;
  23         static unsigned long hw_led_state = 0;
  24
  25         local_irq_save(flags);
  26
  27         switch (evt) {
  28         case led_start:
  29                 hw_led_state |= OMAP730_FPGA_LED_STARTSTOP;
  30                 break;
  31
  32         case led_stop:
  33                 hw_led_state &= ~OMAP730_FPGA_LED_STARTSTOP;
  34                 break;
  35
  36         case led_claim:
  37                 hw_led_state |= OMAP730_FPGA_LED_CLAIMRELEASE;
  38                 break;
  39
  40         case led_release:
  41                 hw_led_state &= ~OMAP730_FPGA_LED_CLAIMRELEASE;
  42                 break;
  43
  44 #ifdef CONFIG_LEDS_TIMER
  45         case led_timer:
  46                 /*
  47                  * Toggle Timer LED
  48                  */
  49                 if (hw_led_state & OMAP730_FPGA_LED_TIMER)
  50                         hw_led_state &= ~OMAP730_FPGA_LED_TIMER;
  51                 else
  52                         hw_led_state |= OMAP730_FPGA_LED_TIMER;
  53                 break;
  54 #endif
  55
  56 #ifdef CONFIG_LEDS_CPU
  57         case led_idle_start:
  58                 hw_led_state |= OMAP730_FPGA_LED_IDLE;
  59                 break;
  60
  61         case led_idle_end:
  62                 hw_led_state &= ~OMAP730_FPGA_LED_IDLE;
  63                 break;
  64 #endif
  65
  66         case led_halted:
  67                 if (hw_led_state & OMAP730_FPGA_LED_HALTED)
  68                         hw_led_state &= ~OMAP730_FPGA_LED_HALTED;
  69                 else
  70                         hw_led_state |= OMAP730_FPGA_LED_HALTED;
  71                 break;
  72
  73         case led_green_on:
  74                 break;
  75
  76         case led_green_off:
  77                 break;
  78
  79         case led_amber_on:
  80                 break;
  81
  82         case led_amber_off:
  83                 break;
  84
  85         case led_red_on:
  86                 break;
  87
  88         case led_red_off:
  89                 break;
  90
  91         default:
  92                 break;
  93         }
  94
  95
  96         /*
  97          *  Actually burn the LEDs
  98          */
  99         __raw_writew(~hw_led_state & 0xffff, OMAP730_FPGA_LEDS);
 100
 101         local_irq_restore(flags);
 102 }