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-rw-r--r--arch/arm/mach-pxa/leds-mainstone.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/leds-mainstone.c b/arch/arm/mach-pxa/leds-mainstone.c
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+++ b/arch/arm/mach-pxa/leds-mainstone.c
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+/*
+ * linux/arch/arm/mach-pxa/leds-mainstone.c
+ *
+ * Author: Nicolas Pitre
+ * Created: Nov 05, 2002
+ * Copyright: MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/leds.h>
+#include <asm/system.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/mainstone.h>
+
+#include "leds.h"
+
+
+/* 8 discrete leds available for general use: */
+#define D28 (1 << 0)
+#define D27 (1 << 1)
+#define D26 (1 << 2)
+#define D25 (1 << 3)
+#define D24 (1 << 4)
+#define D23 (1 << 5)
+#define D22 (1 << 6)
+#define D21 (1 << 7)
+
+#define LED_STATE_ENABLED 1
+#define LED_STATE_CLAIMED 2
+
+static unsigned int led_state;
+static unsigned int hw_led_state;
+
+void mainstone_leds_event(led_event_t evt)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ switch (evt) {
+ case led_start:
+ hw_led_state = 0;
+ 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 = 0;
+ break;
+
+ case led_release:
+ led_state &= ~LED_STATE_CLAIMED;
+ hw_led_state = 0;
+ break;
+
+#ifdef CONFIG_LEDS_TIMER
+ case led_timer:
+ hw_led_state ^= D26;
+ break;
+#endif
+
+#ifdef CONFIG_LEDS_CPU
+ case led_idle_start:
+ hw_led_state &= ~D27;
+ break;
+
+ case led_idle_end:
+ hw_led_state |= D27;
+ break;
+#endif
+
+ case led_halted:
+ break;
+
+ case led_green_on:
+ hw_led_state |= D21;;
+ break;
+
+ case led_green_off:
+ hw_led_state &= ~D21;
+ break;
+
+ case led_amber_on:
+ hw_led_state |= D22;;
+ break;
+
+ case led_amber_off:
+ hw_led_state &= ~D22;
+ break;
+
+ case led_red_on:
+ hw_led_state |= D23;;
+ break;
+
+ case led_red_off:
+ hw_led_state &= ~D23;
+ break;
+
+ default:
+ break;
+ }
+
+ if (led_state & LED_STATE_ENABLED)
+ MST_LEDCTRL = (MST_LEDCTRL | 0xff) & ~hw_led_state;
+ else
+ MST_LEDCTRL |= 0xff;
+
+ local_irq_restore(flags);
+}