Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 20:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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 */