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Diffstat (limited to 'arch/arm/mach-s3c2412/gpio.c')
-rw-r--r--arch/arm/mach-s3c2412/gpio.c62
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 00000000000..4526f6ba31a
--- /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 samsung_gpio_chip *chip = samsung_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);