aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-s3c2412/Makefile1
-rw-r--r--arch/arm/mach-s3c2412/gpio.c60
2 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2412/Makefile b/arch/arm/mach-s3c2412/Makefile
index 7b782c7df7b..267f3348301 100644
--- a/arch/arm/mach-s3c2412/Makefile
+++ b/arch/arm/mach-s3c2412/Makefile
@@ -12,6 +12,7 @@ obj- :=
obj-$(CONFIG_CPU_S3C2412) += s3c2412.o
obj-$(CONFIG_CPU_S3C2412) += irq.o
obj-$(CONFIG_CPU_S3C2412) += clock.o
+obj-$(CONFIG_CPU_S3C2412) += gpio.o
obj-$(CONFIG_S3C2412_DMA) += dma.o
obj-$(CONFIG_S3C2412_PM) += pm.o sleep.o
diff --git a/arch/arm/mach-s3c2412/gpio.c b/arch/arm/mach-s3c2412/gpio.c
new file mode 100644
index 00000000000..8e55c3a2eab
--- /dev/null
+++ b/arch/arm/mach-s3c2412/gpio.c
@@ -0,0 +1,60 @@
+/* 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 <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/regs-gpio.h>
+
+#include <asm/hardware.h>
+
+int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state)
+{
+ void __iomem *base = S3C24XX_GPIO_BASE(pin);
+ unsigned long offs = S3C2410_GPIO_OFFSET(pin);
+ unsigned long flags;
+ unsigned long slpcon;
+
+ offs *= 2;
+
+ if (pin < S3C2410_GPIO_BANKB)
+ return -EINVAL;
+
+ if (pin >= S3C2410_GPIO_BANKF &&
+ pin <= S3C2410_GPIO_BANKG)
+ return -EINVAL;
+
+ if (pin > (S3C2410_GPIO_BANKH + 32))
+ return -EINVAL;
+
+ local_irq_save(flags);
+
+ slpcon = __raw_readl(base + 0x0C);
+
+ slpcon &= ~(3 << offs);
+ slpcon |= state << offs;
+
+ __raw_writel(slpcon, base + 0x0C);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg);