This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / arm / mach-s3c2410 / gpio.c

diff --git a/arch/arm/mach-s3c2410/gpio.c b/arch/arm/mach-s3c2410/gpio.c
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+++ b/arch/arm/mach-s3c2410/gpio.c
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+/* linux/arch/arm/mach-s3c2410/gpio.c
+ *
+ * Copyright (c) 2004 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C2410 GPIO support
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+#include <asm/arch/regs-gpio.h>
+
+void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function)
+{
+       unsigned long base = S3C2410_GPIO_BASE(pin);
+       unsigned long shift = 1;
+       unsigned long mask = 3;
+       unsigned long con;
+       unsigned long flags;
+
+       if (pin < S3C2410_GPIO_BANKB) {
+               shift = 0;
+               mask  = 1;
+       }
+
+       mask <<= S3C2410_GPIO_OFFSET(pin);
+
+       local_irq_save(flags);
+
+       con = __raw_readl(base + 0x00);
+
+       con &= mask << shift;
+       con |= function;
+
+       __raw_writel(con, base + 0x00);
+
+       local_irq_restore(flags);
+}
+
+void s3c2410_gpio_pullup(unsigned int pin, unsigned int to)
+{
+       unsigned long base = S3C2410_GPIO_BASE(pin);
+       unsigned long offs = S3C2410_GPIO_OFFSET(pin);
+       unsigned long flags;
+       unsigned long up;
+
+       if (pin < S3C2410_GPIO_BANKB)
+               return;
+
+       local_irq_save(flags);
+
+       up = __raw_readl(base + 0x08);
+       up &= 1 << offs;
+       up |= to << offs;
+       __raw_writel(up, base + 0x08);
+
+       local_irq_restore(flags);
+}
+
+void s3c2410_gpio_setpin(unsigned int pin, unsigned int to)
+{
+       unsigned long base = S3C2410_GPIO_BASE(pin);
+       unsigned long offs = S3C2410_GPIO_OFFSET(pin);
+       unsigned long flags;
+       unsigned long dat;
+
+       local_irq_save(flags);
+
+       dat = __raw_readl(base + 0x04);
+       dat &= 1 << offs;
+       dat |= to << offs;
+       __raw_writel(dat, base + 0x04);
+
+       local_irq_restore(flags);
+}