Most Renesas irqpin controllers have 4-bit sense fields, however, some have different widths. This patch adds a DT binding to optionally specify such non-standard values.
Signed-off-by: Guennadi Liakhovetski <[email protected]> --- v3: move the code to a common location, where device configuration parameters are retrieved .../interrupt-controller/renesas,intc-irqpin.txt | 13 +++++++++++++ drivers/irqchip/irq-renesas-intc-irqpin.c | 4 ++++ 2 files changed, 17 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt b/Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt new file mode 100644 index 0000000..c6f09b7 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt @@ -0,0 +1,13 @@ +DT bindings for the R-/SH-Mobile irqpin controller + +Required properties: + +- compatible: has to be "renesas,intc-irqpin" +- #interrupt-cells: has to be <2> + +Optional properties: + +- any properties, listed in interrupts.txt in this directory, and any standard + resource allocation properties +- sense-bitfield-width: width of a single sense bitfield in the SENSE register, + if different from the default 4 bits diff --git a/drivers/irqchip/irq-renesas-intc-irqpin.c b/drivers/irqchip/irq-renesas-intc-irqpin.c index 5a68e5a..4aca1b2 100644 --- a/drivers/irqchip/irq-renesas-intc-irqpin.c +++ b/drivers/irqchip/irq-renesas-intc-irqpin.c @@ -18,6 +18,7 @@ */ #include <linux/init.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/spinlock.h> #include <linux/interrupt.h> @@ -349,6 +350,9 @@ static int intc_irqpin_probe(struct platform_device *pdev) /* deal with driver instance configuration */ if (pdata) memcpy(&p->config, pdata, sizeof(*pdata)); + else + of_property_read_u32(pdev->dev.of_node, "sense-bitfield-width", + &p->config.sense_bitfield_width); if (!p->config.sense_bitfield_width) p->config.sense_bitfield_width = 4; /* default to 4 bits */ -- 1.7.2.5 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
