| Message ID | 1471644615-10320-4-git-send-email-vladimir_zapolskiy@mentor.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 1f0deb7d3380..342f34f90bbd 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -458,6 +458,11 @@ static int mxc_gpio_probe(struct platform_device *pdev) if (err) goto out_bgio; + if (of_property_read_bool(np, "gpio-ranges")) { + port->gc.request = gpiochip_generic_request; + port->gc.free = gpiochip_generic_free; + } + port->gc.to_irq = mxc_gpio_to_irq; port->gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 : pdev->id * 32;
If a GPIO controller description in board DTB contains information about mappings between GPIOs and pads under IOMUX control use it to request and free GPIOs with respect to pinctrl/pinmux subsystems. One of immediate positive functional changes is inability to request non-existing GPIOs, i.e. if there is no pad such. Also pinctrl/pinmux may now properly account pads occupied by requested GPIOs. The change has no effect, if "gpio-ranges" property is not found including the case if a board has no DTB firmware. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> --- drivers/gpio/gpio-mxc.c | 5 +++++ 1 file changed, 5 insertions(+)