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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fbc83b7f59
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>
44 lines
650 B
Plaintext
44 lines
650 B
Plaintext
config IRQCHIP
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def_bool y
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depends on OF_IRQ
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config ARM_GIC
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bool
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select IRQ_DOMAIN
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select MULTI_IRQ_HANDLER
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config GIC_NON_BANKED
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bool
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config ARM_VIC
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bool
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select IRQ_DOMAIN
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select MULTI_IRQ_HANDLER
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config ARM_VIC_NR
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int
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default 4 if ARCH_S5PV210
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default 3 if ARCH_S5PC100
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default 2
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depends on ARM_VIC
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help
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The maximum number of VICs available in the system, for
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power management.
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config RENESAS_INTC_IRQPIN
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bool
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select IRQ_DOMAIN
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config RENESAS_IRQC
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bool
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select IRQ_DOMAIN
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config VERSATILE_FPGA_IRQ
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bool
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select IRQ_DOMAIN
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config VERSATILE_FPGA_IRQ_NR
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int
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default 4
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depends on VERSATILE_FPGA_IRQ
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