/* linux/arch/arm/mach-s3c2410/gpio.c
*
- * Copyright (c) 2004-2005 Simtec Electronics
+ * Copyright (c) 2004-2006 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* S3C2410 GPIO support
* 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
*/
-
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
+#include <linux/io.h>
-#include <asm/hardware.h>
+#include <mach/hardware.h>
+#include <mach/gpio-fns.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)
-{
- void __iomem *base = S3C2410_GPIO_BASE(pin);
- unsigned long mask;
- unsigned long con;
- unsigned long flags;
-
- if (pin < S3C2410_GPIO_BANKB) {
- mask = 1 << S3C2410_GPIO_OFFSET(pin);
- } else {
- mask = 3 << S3C2410_GPIO_OFFSET(pin)*2;
- }
-
- switch (function) {
- case S3C2410_GPIO_LEAVE:
- mask = 0;
- function = 0;
- break;
-
- case S3C2410_GPIO_INPUT:
- case S3C2410_GPIO_OUTPUT:
- case S3C2410_GPIO_SFN2:
- case S3C2410_GPIO_SFN3:
- if (pin < S3C2410_GPIO_BANKB) {
- function &= 1;
- function <<= S3C2410_GPIO_OFFSET(pin);
- } else {
- function &= 3;
- function <<= S3C2410_GPIO_OFFSET(pin)*2;
- }
- }
-
- /* modify the specified register wwith IRQs off */
-
- local_irq_save(flags);
-
- con = __raw_readl(base + 0x00);
- con &= ~mask;
- con |= function;
-
- __raw_writel(con, base + 0x00);
-
- local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(s3c2410_gpio_cfgpin);
-
-unsigned int s3c2410_gpio_getcfg(unsigned int pin)
-{
- void __iomem *base = S3C2410_GPIO_BASE(pin);
- unsigned long mask;
-
- if (pin < S3C2410_GPIO_BANKB) {
- mask = 1 << S3C2410_GPIO_OFFSET(pin);
- } else {
- mask = 3 << S3C2410_GPIO_OFFSET(pin)*2;
- }
-
- return __raw_readl(base) & mask;
-}
-
-EXPORT_SYMBOL(s3c2410_gpio_getcfg);
-
-void s3c2410_gpio_pullup(unsigned int pin, unsigned int to)
-{
- void __iomem *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 &= ~(1L << offs);
- up |= to << offs;
- __raw_writel(up, base + 0x08);
-
- local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(s3c2410_gpio_pullup);
-
-void s3c2410_gpio_setpin(unsigned int pin, unsigned int to)
-{
- void __iomem *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);
-}
-
-EXPORT_SYMBOL(s3c2410_gpio_setpin);
-
-unsigned int s3c2410_gpio_getpin(unsigned int pin)
-{
- void __iomem *base = S3C2410_GPIO_BASE(pin);
- unsigned long offs = S3C2410_GPIO_OFFSET(pin);
-
- return __raw_readl(base + 0x04) & (1<< offs);
-}
-
-EXPORT_SYMBOL(s3c2410_gpio_getpin);
-
-unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
-{
- unsigned long flags;
- unsigned long misccr;
-
- local_irq_save(flags);
- misccr = __raw_readl(S3C2410_MISCCR);
- misccr &= ~clear;
- misccr ^= change;
- __raw_writel(misccr, S3C2410_MISCCR);
- local_irq_restore(flags);
-
- return misccr;
-}
-
-EXPORT_SYMBOL(s3c2410_modify_misccr);
-
-int s3c2410_gpio_getirq(unsigned int pin)
-{
- if (pin < S3C2410_GPF0 || pin > S3C2410_GPG15_EINT23)
- 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);
+#include <mach/regs-gpio.h>
int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
unsigned int config)
{
- void __iomem *reg = S3C2410_EINFLT0;
+ void __iomem *reg = S3C24XX_EINFLT0;
unsigned long flags;
unsigned long val;
- if (pin < S3C2410_GPG8 || pin > S3C2410_GPG15)
- return -1;
+ if (pin < S3C2410_GPG(8) || pin > S3C2410_GPG(15))
+ return -EINVAL;
config &= 0xff;
- pin -= S3C2410_GPG8_EINT16;
+ pin -= S3C2410_GPG(8);
reg += pin & ~3;
local_irq_save(flags);
/* update filter enable */
- val = __raw_readl(S3C2410_EXTINT2);
+ val = __raw_readl(S3C24XX_EXTINT2);
val &= ~(1 << ((pin * 4) + 3));
val |= on << ((pin * 4) + 3);
- __raw_writel(val, S3C2410_EXTINT2);
+ __raw_writel(val, S3C24XX_EXTINT2);
local_irq_restore(flags);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff