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| author | Grant Likely <grant.likely@secretlab.ca> | 2011-06-15 14:54:14 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-06-15 14:54:14 -0600 |
| commit | df2212270ce94f12e9caed6ca04c7077672d588e (patch) | |
| tree | 455784e6d9d5c46c638f43b16e81bc17d90d1efd | |
| parent | ea5a9607cb2a3c7e5e9fcb1b3d75b8f88eca5766 (diff) | |
| download | linux-3.10-df2212270ce94f12e9caed6ca04c7077672d588e.tar.gz linux-3.10-df2212270ce94f12e9caed6ca04c7077672d588e.tar.bz2 linux-3.10-df2212270ce94f12e9caed6ca04c7077672d588e.zip | |
gpio/tegra: add devicetree support
Add support for decoding gpios from the device tree
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Olof Johansson <olof@lixom.net>
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio_nvidia.txt | 7 | ||||
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 10 |
2 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt new file mode 100644 index 00000000000..afb3ff3134c --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio_nvidia.txt @@ -0,0 +1,7 @@ +NVIDIA Tegra 2 GPIO controller + +Required properties: +- compatible : "nvidia,tegra250-gpio" +- #gpio-cells : Should be two. The first cell is the pin number and the + second cell is used to specify optional parameters (currently unused). +- gpio-controller : Marks the device node as a GPIO controller. diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 919d6383773..13afb881ffc 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -23,6 +23,7 @@ #include <linux/io.h> #include <linux/gpio.h> +#include <linux/of.h> #include <asm/mach/irq.h> @@ -340,6 +341,15 @@ static int __init tegra_gpio_init(void) } } +#ifdef CONFIG_OF_GPIO + /* + * This isn't ideal, but it gets things hooked up until this + * driver is converted into a platform_device + */ + tegra_gpio_chip.of_node = of_find_compatible_node(NULL, NULL, + "nvidia,tegra250-gpio"); +#endif /* CONFIG_OF_GPIO */ + gpiochip_add(&tegra_gpio_chip); for (i = INT_GPIO_BASE; i < (INT_GPIO_BASE + TEGRA_NR_GPIOS); i++) { |