X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=arch%2Farm%2Fplat-iop%2Fgpio.c;fp=arch%2Farm%2Fplat-iop%2Fgpio.c;h=eda436083417977ea8e60c2aa35436a2e7b71c73;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/arch/arm/plat-iop/gpio.c b/arch/arm/plat-iop/gpio.c
new file mode 100644
index 000000000..eda436083
--- /dev/null
+++ b/arch/arm/plat-iop/gpio.c
@@ -0,0 +1,48 @@
+/*
+ * arch/arm/plat-iop/gpio.c
+ * GPIO handling for Intel IOP3xx processors.
+ *
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/device.h>
+#include <asm/hardware/iop3xx.h>
+
+void gpio_line_config(int line, int direction)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	if (direction == GPIO_IN) {
+		*IOP3XX_GPOE |= 1 << line;
+	} else if (direction == GPIO_OUT) {
+		*IOP3XX_GPOE &= ~(1 << line);
+	}
+	local_irq_restore(flags);
+}
+EXPORT_SYMBOL(gpio_line_config);
+
+int gpio_line_get(int line)
+{
+	return !!(*IOP3XX_GPID & (1 << line));
+}
+EXPORT_SYMBOL(gpio_line_get);
+
+void gpio_line_set(int line, int value)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	if (value == GPIO_LOW) {
+		*IOP3XX_GPOD &= ~(1 << line);
+	} else if (value == GPIO_HIGH) {
+		*IOP3XX_GPOD |= 1 << line;
+	}
+	local_irq_restore(flags);
+}
+EXPORT_SYMBOL(gpio_line_set);