Pull video into test branch

[linux-drm-fsl-dcu.git] / arch / arm / mach-s3c2410 / gpio.c

diff --git a/arch/arm/mach-s3c2410/gpio.c b/arch/arm/mach-s3c2410/gpio.c
index db6393c9986091328cd1f31b00beeb1219d42315..f6fb215bb48c2a7d6f5dc108cc1ffe70ccd532c3 100644 (file)
--- a/arch/arm/mach-s3c2410/gpio.c
+++ b/arch/arm/mach-s3c2410/gpio.c
@@ -3,7 +3,7 @@
  * 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
@@ -57,6 +57,7 @@ void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function)
        case S3C2410_GPIO_SFN2:
        case S3C2410_GPIO_SFN3:
                if (pin < S3C2410_GPIO_BANKB) {
+                       function -= 1;
                        function &= 1;
                        function <<= S3C2410_GPIO_OFFSET(pin);
                } else {
@@ -83,15 +84,18 @@ EXPORT_SYMBOL(s3c2410_gpio_cfgpin);
 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);
@@ -163,3 +167,22 @@ unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change)
 }
 
 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);