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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2019-09-11 09:52:05 +0200
committerLinus Walleij <linus.walleij@linaro.org>2019-09-12 11:29:17 +0200
commit11c43bb022b373d2fdb84950ebf1911362f3f010 (patch)
treed46e79d87bb01d1c2f2f565c10a468c850058c92 /drivers/gpio/gpiolib-of.c
parentgpio: htc-egpio: Remove unused exported htc_egpio_get_wakeup_irq() (diff)
downloadlinux-11c43bb022b373d2fdb84950ebf1911362f3f010.tar.xz
linux-11c43bb022b373d2fdb84950ebf1911362f3f010.zip
gpiolib: of: add a fallback for wlf,reset GPIO name
The old Arizona binding did not use -gpio or -gpios suffix, so devm_gpiod_get() does not work for it. As it is the one of a few users of devm_gpiod_get_from_of_node() API that I want to remove, I'd rather have a small quirk in the gpiolib OF handler, and switch Arizona driver to devm_gpiod_get(). Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20190911075215.78047-2-dmitry.torokhov@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib-of.c')
-rw-r--r--drivers/gpio/gpiolib-of.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index d5b98b48eb5d..3b18240acb0a 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -438,6 +438,19 @@ static struct gpio_desc *of_find_regulator_gpio(struct device *dev, const char *
return desc;
}
+static struct gpio_desc *of_find_arizona_gpio(struct device *dev,
+ const char *con_id,
+ enum of_gpio_flags *of_flags)
+{
+ if (!IS_ENABLED(CONFIG_MFD_ARIZONA))
+ return ERR_PTR(-ENOENT);
+
+ if (!con_id || strcmp(con_id, "wlf,reset"))
+ return ERR_PTR(-ENOENT);
+
+ return of_get_named_gpiod_flags(dev->of_node, con_id, 0, of_flags);
+}
+
struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
unsigned int idx, unsigned long *flags)
{
@@ -488,6 +501,9 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
if (IS_ERR(desc) && PTR_ERR(desc) != -EPROBE_DEFER)
desc = of_find_regulator_gpio(dev, con_id, &of_flags);
+ if (IS_ERR(desc) && PTR_ERR(desc) == -ENOENT)
+ desc = of_find_arizona_gpio(dev, con_id, &of_flags);
+
if (IS_ERR(desc))
return desc;