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Value 0 of the sense selection field of CONFIG_n register means "disable event
detection" and serves in irqc_sense[] for marking the invalid values of the IRQ
type (by just omitting initializers). There is no need for INTC_IRQ_SENSE_VALID
and hence INTC_IRQ_SENSE() as all field values matching to the valid IRQ types
are non-zero anyway.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Now when lazy interrupt disable has been enabled in the driver
then extend the code to set IRQCHIP_MASK_ON_SUSPEND which tells
the core that only IRQs marked as wakeups need to stay enabled
during Suspend-to-RAM.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Set the ->irq_enable() and ->irq_disable() methods to NULL
to enable lazy disable of interrupts. This by itself provides
some level of optimization, but is mainly enabled as ground
work for future Suspend-to-RAM wake up support.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The code in goto err3 path is wrong because it will call fee_irq() with k == 0,
which means it does free_irq(p->irq[-1].requested_irq, &p->irq[-1]);
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add DT support to the IRQC External IRQ Pin driver.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This patch adds a driver for external IRQ pins connected
to the IRQC hardware block on recent SoCs from Renesas.
The IRQC hardware block is used together with more
recent ARM based SoCs using the GIC. As usual the GIC
requires external IRQ trigger setup somewhere else
which in this particular case happens to be IRQC.
This driver implements the glue code needed to configure
IRQ trigger and also handle mask/unmask and demux of
external IRQ pins hooked up from the IRQC to the GIC.
Tested on r8a73a4 but is designed to work with a wide
range of SoCs. The driver requires one GIC SPI per
external IRQ pin to operate. Each driver instance
will handle up to 32 external IRQ pins.
The SoCs using this driver are currently mainly used
together with regular platform devices so this driver
allows configuration via platform data to support things
like static interrupt base address. DT support will
be added incrementally in the not so distant future.
Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
