target/linux/brcm47xx/patches-2.6.25/710-add-gpio-is-valid.patch

   1 Add gpio_is_valid() for bcm47xx
   2 Index: linux-2.6.25.10/arch/mips/bcm47xx/gpio.c
   3 ===================================================================
   4 --- linux-2.6.25.10.orig/arch/mips/bcm47xx/gpio.c       2008-07-20 20:48:44.000000000 +0200
   5 +++ linux-2.6.25.10/arch/mips/bcm47xx/gpio.c    2008-07-20 20:57:55.000000000 +0200
   6 @@ -77,3 +77,15 @@ int bcm47xx_gpio_direction_output(unsign
   7  }
   8  EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
   9
  10 +int bcm47xx_gpio_is_valid(int gpio)
  11 +{
  12 +       if (ssb_bcm47xx.chipco.dev) {
  13 +               if (gpio >= 0 && gpio < BCM47XX_CHIPCO_GPIO_LINES)
  14 +                       return 1;
  15 +       } else if (ssb_bcm47xx.extif.dev) {
  16 +               if (gpio >= 0 && gpio < BCM47XX_EXTIF_GPIO_LINES)
  17 +                       return 1;
  18 +       }
  19 +       return 0;
  20 +}
  21 +EXPORT_SYMBOL_GPL(bcm47xx_gpio_is_valid);
  22 Index: linux-2.6.25.10/include/asm-mips/mach-bcm47xx/gpio.h
  23 ===================================================================
  24 --- linux-2.6.25.10.orig/include/asm-mips/mach-bcm47xx/gpio.h   2008-07-20 20:48:44.000000000 +0200
  25 +++ linux-2.6.25.10/include/asm-mips/mach-bcm47xx/gpio.h        2008-07-20 20:49:20.000000000 +0200
  26 @@ -17,6 +17,7 @@ extern int bcm47xx_gpio_get_value(unsign
  27  extern void bcm47xx_gpio_set_value(unsigned gpio, int value);
  28  extern int bcm47xx_gpio_direction_input(unsigned gpio);
  29  extern int bcm47xx_gpio_direction_output(unsigned gpio, int value);
  30 +extern int bcm47xx_gpio_is_valid(int gpio);
  31
  32  static inline int gpio_request(unsigned gpio, const char *label)
  33  {
  34 @@ -52,6 +53,10 @@ static inline int gpio_direction_output(
  35         return bcm47xx_gpio_direction_output(gpio, value);
  36  }
  37
  38 +static inline int gpio_is_valid(int gpio)
  39 +{
  40 +       return bcm47xx_gpio_is_valid(gpio);
  41 +}
  42
  43  /* cansleep wrappers */
  44  #include <asm-generic/gpio.h>