initial_commit

1 files changed, 62 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2412/gpio.c b/arch/arm/mach-s3c2412/gpio.c
new file mode 100644
index 00000000..3404a876
--- /dev/null
+++ b/arch/arm/mach-s3c2412/gpio.c
@@ -0,0 +1,62 @@
+/* linux/arch/arm/mach-s3c2412/gpio.c
+ *
+ * Copyright (c) 2007 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *
+ * http://armlinux.simtec.co.uk/.
+ *
+ * S3C2412/S3C2413 specific GPIO support
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <mach/regs-gpio.h>
+#include <mach/hardware.h>
+
+#include <plat/gpio-core.h>
+
+int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state)
+{
+	struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin);
+	unsigned long offs = pin - chip->chip.base;
+	unsigned long flags;
+	unsigned long slpcon;
+
+	offs *= 2;
+
+	if (pin < S3C2410_GPB(0))
+		return -EINVAL;
+
+	if (pin >= S3C2410_GPF(0) &&
+	    pin <= S3C2410_GPG(16))
+		return -EINVAL;
+
+	if (pin > S3C2410_GPH(16))
+		return -EINVAL;
+
+	local_irq_save(flags);
+
+	slpcon = __raw_readl(chip->base + 0x0C);
+
+	slpcon &= ~(3 << offs);
+	slpcon |= state << offs;
+
+	__raw_writel(slpcon, chip->base + 0x0C);
+
+	local_irq_restore(flags);
+
+	return 0;
+}
+
+EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg);