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authorMichael Walle <michael@walle.cc>2020-05-28 16:58:43 +0200
committerLinus Walleij <linus.walleij@linaro.org>2020-06-03 10:48:37 +0200
commit6a45b0e2589fafd7fc501a5fbd0ab56689a08124 (patch)
tree354473198d7559b15863615df6963a840d2b9998 /drivers/gpio/gpiolib.c
parenta8173820f441ab3e2a45c4bb66b70da9a57a349e (diff)
downloadlinux-6a45b0e2589fafd7fc501a5fbd0ab56689a08124.tar.bz2
gpiolib: Introduce gpiochip_irqchip_add_domain()
The function connects an IRQ domain to a gpiochip and reuses gpiochip_to_irq() which is provided by gpiolib. gpiochip_irqchip_* and regmap_irq partially provide the same functionality. This function will help to connect just the minimal functionality of the gpiochip_irqchip which is needed to work together with regmap-irq. Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20200528145845.31436-2-michael@walle.cc Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
-rw-r--r--drivers/gpio/gpiolib.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 167860684be6..0a54a759dd40 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2779,6 +2779,26 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gc,
}
EXPORT_SYMBOL_GPL(gpiochip_irqchip_add_key);
+/**
+ * gpiochip_irqchip_add_domain() - adds an irqdomain to a gpiochip
+ * @gc: the gpiochip to add the irqchip to
+ * @domain: the irqdomain to add to the gpiochip
+ *
+ * This function adds an IRQ domain to the gpiochip.
+ */
+int gpiochip_irqchip_add_domain(struct gpio_chip *gc,
+ struct irq_domain *domain)
+{
+ if (!domain)
+ return -EINVAL;
+
+ gc->to_irq = gpiochip_to_irq;
+ gc->irq.domain = domain;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(gpiochip_irqchip_add_domain);
+
#else /* CONFIG_GPIOLIB_IRQCHIP */
static inline int gpiochip_add_irqchip(struct gpio_chip *gc,