* Copyright (c) 2004-2005 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
- * S3C2410 GPIO support
+ * S3C24XX 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
* 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
- *
- * Changelog
- * 13-Sep-2004 BJD Implemented change of MISCCR
- * 14-Sep-2004 BJD Added getpin call
- * 14-Sep-2004 BJD Fixed bug in setpin() call
- * 30-Sep-2004 BJD Fixed cfgpin() mask bug
- * 01-Oct-2004 BJD Added getcfg() to get pin configuration
- * 01-Oct-2004 BJD Fixed mask bug in pullup() call
- * 01-Oct-2004 BJD Added getirq() to turn pin into irqno
- * 04-Oct-2004 BJD Added irq filter controls for GPIO
- * 05-Nov-2004 BJD EXPORT_SYMBOL() added for all code
- * 13-Mar-2005 BJD Updates for __iomem
- * 26-Oct-2005 BJD Added generic configuration types
- * 15-Jan-2006 LCVR Added support for the S3C2400
- */
+*/
#include <linux/kernel.h>
case S3C2410_GPIO_SFN2:
case S3C2410_GPIO_SFN3:
if (pin < S3C2410_GPIO_BANKB) {
+ function -= 1;
function &= 1;
function <<= S3C2410_GPIO_OFFSET(pin);
} else {
unsigned int s3c2410_gpio_getcfg(unsigned int pin)
{
void __iomem *base = S3C24XX_GPIO_BASE(pin);
- unsigned long mask;
+ unsigned long val = __raw_readl(base);
if (pin < S3C2410_GPIO_BANKB) {
- mask = 1 << S3C2410_GPIO_OFFSET(pin);
+ val >>= S3C2410_GPIO_OFFSET(pin);
+ val &= 1;
+ val += 1;
} else {
- mask = 3 << S3C2410_GPIO_OFFSET(pin)*2;
+ val >>= S3C2410_GPIO_OFFSET(pin)*2;
+ val &= 3;
}
- return __raw_readl(base) & mask;
+ return val | S3C2410_GPIO_INPUT;
}
EXPORT_SYMBOL(s3c2410_gpio_getcfg);
}
EXPORT_SYMBOL(s3c2410_modify_misccr);
+
+int s3c2410_gpio_getirq(unsigned int pin)
+{
+ if (pin < S3C2410_GPF0 || pin > S3C2410_GPG15)
+ return -1; /* not valid interrupts */
+
+ if (pin < S3C2410_GPG0 && pin > S3C2410_GPF7)
+ return -1; /* not valid pin */
+
+ if (pin < S3C2410_GPF4)
+ return (pin - S3C2410_GPF0) + IRQ_EINT0;
+
+ if (pin < S3C2410_GPG0)
+ return (pin - S3C2410_GPF4) + IRQ_EINT4;
+
+ return (pin - S3C2410_GPG0) + IRQ_EINT8;
+}
+
+EXPORT_SYMBOL(s3c2410_gpio_getirq);