patch-2.4.9 linux/arch/arm/mach-sa1100/leds-brutus.c

• Lines: 112
• Date: Sun Aug 12 11:13:59 2001
• Orig file: v2.4.8/linux/arch/arm/mach-sa1100/leds-brutus.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.8/linux/arch/arm/mach-sa1100/leds-brutus.c linux/arch/arm/mach-sa1100/leds-brutus.c
@@ -0,0 +1,111 @@
+/*
+ * linux/arch/arm/mach-sa1100/leds-brutus.c
+ *
+ * Copyright (C) 2000 Nicolas Pitre
+ *
+ * Brutus uses the LEDs as follows:
+ *   - D3 (Green, GPIO9) - toggles state every 50 timer interrupts
+ *   - D17 (Red, GPIO20) - on if system is not idle
+ *   - D4 (Green, GPIO8) - misc function
+ */
+#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_D3		GPIO_GPIO(9)
+#define LED_D4		GPIO_GPIO(8)
+#define LED_D17		GPIO_GPIO(20)
+#define LED_MASK	(LED_D3|LED_D4|LED_D17)
+
+void brutus_leds_event(led_event_t evt)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	switch (evt) {
+	case led_start:
+		hw_led_state = LED_MASK;
+		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_D3;
+		break;
+#endif
+
+#ifdef CONFIG_LEDS_CPU
+	case led_idle_start:
+		if (!(led_state & LED_STATE_CLAIMED))
+			hw_led_state |= LED_D17;
+		break;
+
+	case led_idle_end:
+		if (!(led_state & LED_STATE_CLAIMED))
+			hw_led_state &= ~LED_D17;
+		break;
+#endif
+
+	case led_green_on:
+		hw_led_state &= ~LED_D4;
+		break;
+
+	case led_green_off:
+		hw_led_state |= LED_D4;
+		break;
+
+	case led_amber_on:
+		break;
+
+	case led_amber_off:
+		break;
+
+	case led_red_on:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state &= ~LED_D17;
+		break;
+
+	case led_red_off:
+		if (led_state & LED_STATE_CLAIMED)
+			hw_led_state |= LED_D17;
+		break;
+
+	default:
+		break;
+	}
+
+	if  (led_state & LED_STATE_ENABLED) {
+		GPSR = hw_led_state;
+		GPCR = hw_led_state ^ LED_MASK;
+	}
+
+	local_irq_restore(flags);
+}