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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-06-13 11:23:38 +0200
committerSimon Horman <horms+renesas@verge.net.au>2013-06-18 16:15:18 +0900
commit894db164260c39870ea79e473e1307b4aa5e4257 (patch)
tree108e8b9252f79fcdf4e1a58507300f255cedce5f /drivers/irqchip
parent24603f3caf07f5f65aa17ed7851ad4741595cf6a (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>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-renesas-intc-irqpin.c4
1 files changed, 4 insertions, 0 deletions
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 <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 */