/* * linux/arch/arm/mach-pxa/leds-idp.c * * Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu> * * Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com> * * Original (leds-footbridge.c) by Russell King * * Macros for actual LED manipulation should be in machine specific * files in this 'mach' directory. */ #include <linux/init.h> #include <mach/hardware.h> #include <asm/leds.h> #include <asm/system.h> #include <mach/pxa-regs.h> #include <mach/idp.h> #include "leds.h" #define LED_STATE_ENABLED 1 #define LED_STATE_CLAIMED 2 static unsigned int led_state; static unsigned int hw_led_state; void idp_leds_event(led_event_t evt) { unsigned long flags; local_irq_save(flags); switch (evt) { case led_start: hw_led_state = IDP_HB_LED | IDP_BUSY_LED; led_state = LED_STATE_ENABLED; break; case led_stop: led_state &= ~LED_STATE_ENABLED; break; case led_claim: led_state |= LED_STATE_CLAIMED; hw_led_state = IDP_HB_LED | IDP_BUSY_LED; break; case led_release: led_state &= ~LED_STATE_CLAIMED; hw_led_state = IDP_HB_LED | IDP_BUSY_LED; break; #ifdef CONFIG_LEDS_TIMER case led_timer: if (!(led_state & LED_STATE_CLAIMED)) hw_led_state ^= IDP_HB_LED; break; #endif #ifdef CONFIG_LEDS_CPU case led_idle_start: if (!(led_state & LED_STATE_CLAIMED)) hw_led_state &= ~IDP_BUSY_LED; break; case led_idle_end: if (!(led_state & LED_STATE_CLAIMED)) hw_led_state |= IDP_BUSY_LED; break; #endif case led_halted: break; case led_green_on: if (led_state & LED_STATE_CLAIMED) hw_led_state |= IDP_HB_LED; break; case led_green_off: if (led_state & LED_STATE_CLAIMED) hw_led_state &= ~IDP_HB_LED; break; case led_amber_on: break; case led_amber_off: break; case led_red_on: if (led_state & LED_STATE_CLAIMED) hw_led_state |= IDP_BUSY_LED; break; case led_red_off: if (led_state & LED_STATE_CLAIMED) hw_led_state &= ~IDP_BUSY_LED; break; default: break; } if (led_state & LED_STATE_ENABLED) IDP_CPLD_LED_CONTROL = ( (IDP_CPLD_LED_CONTROL | IDP_LEDS_MASK) & ~hw_led_state); else IDP_CPLD_LED_CONTROL |= IDP_LEDS_MASK; local_irq_restore(flags); }