diff options
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index f4c26c7826cd..bb3d3a7edc45 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3309,6 +3309,7 @@ EXPORT_SYMBOL_GPL(gpiod_get_index); * fwnode_get_named_gpiod - obtain a GPIO from firmware node * @fwnode: handle of the firmware node * @propname: name of the firmware property representing the GPIO + * @dflags: GPIO initialization flags * * This function can be used for drivers that get their configuration * from firmware. @@ -3317,12 +3318,17 @@ EXPORT_SYMBOL_GPL(gpiod_get_index); * underlying firmware interface and then makes sure that the GPIO * descriptor is requested before it is returned to the caller. * + * On successfull request the GPIO pin is configured in accordance with + * provided @dflags. + * * In case of error an ERR_PTR() is returned. */ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, - const char *propname) + const char *propname, + enum gpiod_flags dflags) { struct gpio_desc *desc = ERR_PTR(-ENODEV); + unsigned long lflags = 0; bool active_low = false; bool single_ended = false; int ret; @@ -3355,13 +3361,19 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, return ERR_PTR(ret); if (active_low) - set_bit(FLAG_ACTIVE_LOW, &desc->flags); + lflags |= GPIO_ACTIVE_LOW; if (single_ended) { if (active_low) - set_bit(FLAG_OPEN_DRAIN, &desc->flags); + lflags |= GPIO_OPEN_DRAIN; else - set_bit(FLAG_OPEN_SOURCE, &desc->flags); + lflags |= GPIO_OPEN_SOURCE; + } + + ret = gpiod_configure_flags(desc, propname, lflags, dflags); + if (ret < 0) { + gpiod_put(desc); + return ERR_PTR(ret); } return desc; |