- /*
- * linux/arch/arm/mach-sa1100/leds-graphicsclient.c
- *
- * GraphicsClient Plus LEDs support
- * Woojung Huh, Feb 13, 2001
- */
- #include <linux/config.h>
- #include <linux/init.h>
- #include <asm/hardware.h>
- #include <asm/leds.h>
- #include <asm/system.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;
- #define LED_TIMER ADS_LED0 /* green heartbeat */
- #define LED_USER ADS_LED1 /* amber, boots to on */
- #define LED_IDLE ADS_LED2 /* red has the idle led, if any */
- #define LED_MASK (ADS_LED0|ADS_LED1|ADS_LED2)
- void graphicsclient_leds_event(led_event_t evt)
- {
- unsigned long flags;
- save_flags_cli(flags);
- switch (evt) {
- case led_start:
- hw_led_state = 0; /* gc leds are positive logic */
- 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 = LED_MASK;
- break;
- case led_release:
- led_state &= ~LED_STATE_CLAIMED;
- hw_led_state = LED_MASK;
- break;
- #ifdef CONFIG_LEDS_TIMER
- case led_timer:
- if (!(led_state & LED_STATE_CLAIMED))
- hw_led_state ^= LED_TIMER;
- break;
- #endif
- #ifdef CONFIG_LEDS_CPU
- case led_idle_start:
- if (!(led_state & LED_STATE_CLAIMED))
- hw_led_state &= ~LED_IDLE;
- break;
- case led_idle_end:
- if (!(led_state & LED_STATE_CLAIMED))
- hw_led_state |= LED_IDLE;
- break;
- #endif
- case led_green_on:
- break;
- case led_green_off:
- break;
- case led_amber_on:
- hw_led_state |= LED_USER;
- break;
- case led_amber_off:
- hw_led_state &= ~LED_USER;
- break;
- case led_red_on:
- break;
- case led_red_off:
- break;
- default:
- break;
- }
- if (led_state & LED_STATE_ENABLED) {
- GPSR = hw_led_state;
- GPCR = hw_led_state ^ LED_MASK;
- }
- restore_flags(flags);
- }