From 69df1d6648a27d96f8cedea3ae44463ccbfd942a Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 8 Apr 2013 08:08:40 +0000 Subject: [PATCH] irqchip: renesas-intc-irqpin: DT binding for sense bitfield width 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 Acked-by: Magnus Damm Signed-off-by: Simon Horman --- .../interrupt-controller/renesas,intc-irqpin.txt | 13 +++++++++++++ drivers/irqchip/irq-renesas-intc-irqpin.c | 4 ++++ 2 files changed, 17 insertions(+) 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 000000000000..c6f09b74d130 --- /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 5a68e5accec1..4aca1b2bcc48 100644 --- a/drivers/irqchip/irq-renesas-intc-irqpin.c +++ b/drivers/irqchip/irq-renesas-intc-irqpin.c @@ -18,6 +18,7 @@ */ #include +#include #include #include #include @@ -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 */ -- 2.39.5