diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-06-13 11:23:38 +0200 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-06-18 16:15:18 +0900 |
| commit | 894db164260c39870ea79e473e1307b4aa5e4257 (patch) | |
| tree | 108e8b9252f79fcdf4e1a58507300f255cedce5f | |
| parent | 24603f3caf07f5f65aa17ed7851ad4741595cf6a (diff) | |
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 <g.liakhovetski+renesas@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
| -rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt | 14 | ||||
| -rw-r--r-- | drivers/irqchip/irq-renesas-intc-irqpin.c | 4 |
2 files changed, 18 insertions, 0 deletions
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 00000000000..66fcaf5b09f --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt @@ -0,0 +1,14 @@ +DT bindings for the R-/SH-Mobile irqpin controller + +Required properties: + +- compatible: has to be "renesas,intc-irqpin" +- #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in + interrupts.txt in this directory + +Optional properties: + +- any properties, listed in interrupts.txt, 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 5a68e5accec..4aca1b2bcc4 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 */ |