Add support for mapping some GPIO lines to IRQs. GPIO to IRQ mappings
were found out through experimentation, helped by having the GPIO as
output still toggling the IRQ input.
Based-on: http://patchwork.ozlabs.org/patch/660534/
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
#gpio-cells = <2>;
ngpios = <18>;
#gpio-cells = <2>;
ngpios = <18>;
+
+ interrupt-parent = <&ext_intc>;
+ interrupts = <0 0>, <1 0>;
+ interrupt-names = "gpio1", "gpio2";
};
gpio0: gpio-controller@10000084 {
};
gpio0: gpio-controller@10000084 {
#gpio-cells = <2>;
ngpios = <20>;
#gpio-cells = <2>;
ngpios = <20>;
+
+ interrupt-parent = <&periph_intc>;
+ interrupts = <0 0>, <1 0>, <2 0>, <3 0>;
+ interrupt-names = "gpio0", "gpio1", "gpio2", "gpio3";
};
gpio0: gpio-controller@100000c4 {
};
gpio0: gpio-controller@100000c4 {
gpio-controller;
#gpio-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
+
+ interrupt-parent = <&ext_intc>;
+ interrupts = <3 0>, <2 0>, <0 0>, <1 0>;
+ interrupt-names = "gpio12", "gpio15",
+ "gpio23", "gpio24";
#gpio-cells = <2>;
ngpios = <5>;
#gpio-cells = <2>;
ngpios = <5>;
+
+ interrupt-parent = <&ext_intc>;
+ interrupts = <0 0>, <1 0>, <2 0>, <3 0>;
+ interrupt-names = "gpio0", "gpio1", "gpio2", "gpio3";
};
gpio0: gpio-controller@fffe0404 {
};
gpio0: gpio-controller@fffe0404 {
#gpio-cells = <2>;
ngpios = <8>;
#gpio-cells = <2>;
ngpios = <8>;
+
+ interrupts-extended = <&ext_intc1 0 0>,
+ <&ext_intc1 1 0>,
+ <&ext_intc0 0 0>,
+ <&ext_intc0 1 0>,
+ <&ext_intc0 2 0>,
+ <&ext_intc0 3 0>;
+ interrupt-names = "gpio0", "gpio1", "gpio2", "gpio3",
+ "gpio4", "gpio5";
};
gpio0: gpio-controller@fffe0084 {
};
gpio0: gpio-controller@fffe0084 {
gpio-controller;
#gpio-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
+
+ interrupt-parent = <&ext_intc>;
+ interrupts = <0 0>, <1 0>, <2 0>, <3 0>;
+ interrupt-names = "gpio24", "gpio25",
+ "gpio26", "gpio27";
#gpio-cells = <2>;
ngpios = <6>;
#gpio-cells = <2>;
ngpios = <6>;
+
+ interrupts-extended = <&ext_intc1 0 0>,
+ <&ext_intc1 1 0>,
+ <&ext_intc0 0 0>,
+ <&ext_intc0 1 0>,
+ <&ext_intc0 2 0>,
+ <&ext_intc0 3 0>;
+ interrupt-names = "gpio0", "gpio1", "gpio2", "gpio3",
+ "gpio4", "gpio5";
};
gpio0: gpio-controller@10000084 {
};
gpio0: gpio-controller@10000084 {
obj-$(CONFIG_GPIO_CLPS711X) += gpio-clps711x.o
--- /dev/null
+++ b/drivers/gpio/gpio-bcm63xx.c
obj-$(CONFIG_GPIO_CLPS711X) += gpio-clps711x.o
--- /dev/null
+++ b/drivers/gpio/gpio-bcm63xx.c
+/*
+ * Driver for BCM63XX memory-mapped GPIO controllers, based on
+ * Generic driver for memory-mapped GPIO controllers.
+/*
+ * Driver for BCM63XX memory-mapped GPIO controllers, based on
+ * Generic driver for memory-mapped GPIO controllers.
+#include <linux/mod_devicetable.h>
+#include <linux/basic_mmio_gpio.h>
+#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/basic_mmio_gpio.h>
+#include <linux/of.h>
++#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
+
+#include <linux/of_gpio.h>
+
++static int bcm63xx_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
++{
++ char irq_name[7]; /* "gpioXX" */
++
++ sprintf(irq_name, "gpio%d", gpio);
++ return of_irq_get_byname(chip->of_node, irq_name);
++}
++
+static int bcm63xx_gpio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+static int bcm63xx_gpio_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ if (!of_property_read_u32(dev->of_node, "ngpios", &ngpios))
+ bgc->gc.ngpio = ngpios;
+
+ if (!of_property_read_u32(dev->of_node, "ngpios", &ngpios))
+ bgc->gc.ngpio = ngpios;
+
++ if (of_get_property(dev->of_node, "interrupt-names", NULL))
++ bgc->gc.to_irq = bcm63xx_gpio_to_irq;
++
+ } else if (pdata) {
+ bgc->gc.base = pdata->base;
+ if (pdata->ngpio > 0)
+ } else if (pdata) {
+ bgc->gc.base = pdata->base;
+ if (pdata->ngpio > 0)