diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/fdtdec.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 150512e..e1b17a5 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -487,6 +487,26 @@ int fdtdec_decode_gpio(const void *blob, int node, const char *prop_name, return err == 1 ? 0 : err; } +int fdtdec_get_gpio(struct fdt_gpio_state *gpio) +{ + int val; + + if (!fdt_gpio_isvalid(gpio)) + return -1; + + val = gpio_get_value(gpio->gpio); + return gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val; +} + +int fdtdec_set_gpio(struct fdt_gpio_state *gpio, int val) +{ + if (!fdt_gpio_isvalid(gpio)) + return -1; + + val = gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val; + return gpio_set_value(gpio->gpio, val); +} + int fdtdec_setup_gpio(struct fdt_gpio_state *gpio) { /* |