diff options
| author | Wolfgang Denk <wd@denx.de> | 2010-05-04 22:49:15 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-05-04 22:49:15 +0200 |
| commit | 900a1fe8c8c7acda1d8903af02c2d0d993b770d8 (patch) | |
| tree | b17bb283aa7fe7b31f46fbdfd3496b7f23736840 /drivers/gpio/mx31_gpio.c | |
| parent | 4185ae7a7146a77a792e5ba49845e5ca6e95b038 (diff) | |
| parent | 20d98c2cea3398ad93beccd4727a371f41514086 (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'drivers/gpio/mx31_gpio.c')
| -rw-r--r-- | drivers/gpio/mx31_gpio.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpio/mx31_gpio.c b/drivers/gpio/mx31_gpio.c index 737aafa8228..b07f0381561 100644 --- a/drivers/gpio/mx31_gpio.c +++ b/drivers/gpio/mx31_gpio.c @@ -71,3 +71,18 @@ void mx31_gpio_set(unsigned int gpio, unsigned int value) l &= ~(1 << gpio); __REG(gpio_ports[port] + GPIO_DR) = l; } + +int mx31_gpio_get(unsigned int gpio) +{ + unsigned int port = gpio >> 5; + u32 l; + + if (port >= ARRAY_SIZE(gpio_ports)) + return -1; + + gpio &= 0x1f; + + l = (__REG(gpio_ports[port] + GPIO_DR) >> gpio) & 0x01; + + return l; +} |