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| author | Minkyu Kang <mk7.kang@samsung.com> | 2010-04-28 18:56:39 +0900 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2010-04-28 18:56:39 +0900 |
| commit | c3900ef1851063da9c468cc4f901cc527602e715 (patch) | |
| tree | 37cecee990533564d9a13f60f33c929b23db495f /drivers | |
| parent | 6bb7c92cda55cd4e373b56f77b6d144a1acc7543 (diff) | |
| parent | 655ef2595244346744f5e790f7b103d0b9c9d110 (diff) | |
| download | u-boot-imx-c3900ef1851063da9c468cc4f901cc527602e715.zip u-boot-imx-c3900ef1851063da9c468cc4f901cc527602e715.tar.gz u-boot-imx-c3900ef1851063da9c468cc4f901cc527602e715.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'drivers')
| -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 737aafa..b07f038 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; +} |