diff options
Diffstat (limited to 'sys/dev/gpio/gpio_if.m')
| -rw-r--r-- | sys/dev/gpio/gpio_if.m | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sys/dev/gpio/gpio_if.m b/sys/dev/gpio/gpio_if.m index 78383d3d46d8..4d6dfd17a5d7 100644 --- a/sys/dev/gpio/gpio_if.m +++ b/sys/dev/gpio/gpio_if.m @@ -31,6 +31,32 @@ INTERFACE gpio; +CODE { + static gpio_map_gpios_t gpio_default_map_gpios; + + int + gpio_default_map_gpios(device_t bus, phandle_t dev, + phandle_t gparent, int gcells, pcell_t *gpios, uint32_t *pin, + uint32_t *flags) + { + /* Propagate up the bus hierarchy until someone handles it. */ + if (device_get_parent(bus) != NULL) + return (GPIO_MAP_GPIOS(device_get_parent(bus), dev, + gparent, gcells, gpios, pin, flags)); + + /* If that fails, then assume the FreeBSD defaults. */ + *pin = gpios[0]; + if (gcells == 2 || gcells == 3) + *flags = gpios[gcells - 1]; + + return (0); + } +}; + +HEADER { + #include <dev/ofw/openfirm.h> +}; + # # Get total number of pins # @@ -100,3 +126,16 @@ METHOD int pin_setflags { uint32_t pin_num; uint32_t flags; }; + +# +# Allow the GPIO controller to map the gpio-specifier on its own. +# +METHOD int map_gpios { + device_t bus; + phandle_t dev; + phandle_t gparent; + int gcells; + pcell_t *gpios; + uint32_t *pin; + uint32_t *flags; +} DEFAULT gpio_default_map_gpios; |