patch-2.4.22 linux-2.4.22/arch/arm/mach-sa1100/leds-adsagc.c

• Lines: 108
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/arm/mach-sa1100/leds-adsagc.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/arm/mach-sa1100/leds-adsagc.c linux-2.4.22/arch/arm/mach-sa1100/leds-adsagc.c
@@ -0,0 +1,107 @@
+/*
+ *  linux/arch/arm/mach-sa1100/leds-adsagc.c
+ *
+ * ADS Advanced Graphics Client LEDs support
+ * Robert Whaley, Feb 7, 2003
+ */
+#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 adsagc_leds_event(led_event_t evt)
+{
+	unsigned long flags;
+
+	local_irq_save(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) {
+
+	        unsigned char ads_cr3 = ADS_CR3;
+		ads_cr3 &= ~LED_MASK;
+		ads_cr3 |= hw_led_state;
+		ADS_CR3 = ads_cr3;
+	}
+
+	local_irq_restore(flags);
+}