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ARM: shmobile: irqpin: add a DT property to enable masking on parent

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To disable spurious interrupts, that get triggered on certain hardware, the
irqpin driver masks them on the parent interrupt controller. To specify
such broken devices a .control_parent parameter can be provided in the
platform data. In the DT case we need a property, to do the same.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Guennadi Liakhovetski 2013-06-19 07:53:09 +02:00 committed by Simon Horman
parent 561a1a31d2
commit c4fa4946f1
2 changed files with 7 additions and 2 deletions
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2
Documentation/devicetree/bindings/interrupt-controller/renesas,intc-irqpin.txt
View file

@ -12,3 +12,5 @@ Optional properties:
properties
- sense-bitfield-width: width of a single sense bitfield in the SENSE register,
if different from the default 4 bits
- control-parent: disable and enable interrupts on the parent interrupt
controller, needed for some broken implementations

7
drivers/irqchip/irq-renesas-intc-irqpin.c
View file

@ -348,11 +348,14 @@ static int intc_irqpin_probe(struct platform_device *pdev)
}
/* deal with driver instance configuration */
if (pdata)
if (pdata) {
memcpy(&p->config, pdata, sizeof(*pdata));
else
} else {
of_property_read_u32(pdev->dev.of_node, "sense-bitfield-width",
&p->config.sense_bitfield_width);
p->config.control_parent = of_property_read_bool(pdev->dev.of_node,
"control-parent");
}
if (!p->config.sense_bitfield_width)
p->config.sense_bitfield_width = 4; /* default to 4 bits */