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Add a platform driver to support non-root GICs that require runtime power-management. Currently, only non-root GICs are supported because the functions, smp_cross_call() and set_handle_irq(), that need to be called for a root controller are located in the __init section and so cannot be called by the platform driver. The GIC platform driver re-uses many functions from the existing GIC driver including some functions to save and restore the GIC context during power transitions. The functions for saving and restoring the GIC context are currently only defined if CONFIG_CPU_PM is enabled and to ensure that these functions are always defined when the platform driver is enabled, a dependency on CONFIG_ARM_GIC_PM (which selects the platform driver) has been added. In order to re-use the private GIC initialisation code, a new public function, gic_of_init_child(), has been added which calls various private functions to initialise the GIC. This is different from the existing gic_of_init() because it only supports non-root GICs (ie. does not call smp_cross_call() is set_handle_irq()) and is not located in the __init section (so can be used by platform drivers). Furthermore, gic_of_init_child() dynamically allocates memory for the GIC chip data which is also different from gic_of_init(). There is no specific suspend handling for GICs registered as platform devices. Non-wakeup interrupts will be disabled by the kernel during late suspend, however, this alone will not power down the GIC if interrupts have been requested and not freed. Therefore, requestors of non-wakeup interrupts will need to free them on entering suspend in order to power-down the GIC. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
269 lines
4.4 KiB
Plaintext
269 lines
4.4 KiB
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 IRQ_DOMAIN_HIERARCHY
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select MULTI_IRQ_HANDLER
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config ARM_GIC_PM
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bool
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depends on PM
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select ARM_GIC
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select PM_CLK
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config ARM_GIC_MAX_NR
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int
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default 2 if ARCH_REALVIEW
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default 1
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config ARM_GIC_V2M
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bool
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depends on ARM_GIC
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depends on PCI && PCI_MSI
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select PCI_MSI_IRQ_DOMAIN
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config GIC_NON_BANKED
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bool
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config ARM_GIC_V3
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bool
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select IRQ_DOMAIN
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select MULTI_IRQ_HANDLER
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select IRQ_DOMAIN_HIERARCHY
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select PARTITION_PERCPU
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config ARM_GIC_V3_ITS
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bool
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select PCI_MSI_IRQ_DOMAIN
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config ARM_NVIC
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bool
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select IRQ_DOMAIN
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select IRQ_DOMAIN_HIERARCHY
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select GENERIC_IRQ_CHIP
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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 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 ARMADA_370_XP_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select PCI_MSI_IRQ_DOMAIN if PCI_MSI
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config ALPINE_MSI
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bool
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depends on PCI && PCI_MSI
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select GENERIC_IRQ_CHIP
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select PCI_MSI_IRQ_DOMAIN
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config ATMEL_AIC_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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select MULTI_IRQ_HANDLER
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select SPARSE_IRQ
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config ATMEL_AIC5_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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select MULTI_IRQ_HANDLER
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select SPARSE_IRQ
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config I8259
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bool
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select IRQ_DOMAIN
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config BCM6345_L1_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config BCM7038_L1_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config BCM7120_L2_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config BRCMSTB_L2_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config DW_APB_ICTL
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config HISILICON_IRQ_MBIGEN
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bool
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select ARM_GIC_V3
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select ARM_GIC_V3_ITS
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select GENERIC_MSI_IRQ_DOMAIN
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config IMGPDC_IRQ
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config IRQ_MIPS_CPU
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config CLPS711X_IRQCHIP
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bool
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depends on ARCH_CLPS711X
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select IRQ_DOMAIN
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select MULTI_IRQ_HANDLER
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select SPARSE_IRQ
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default y
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config OR1K_PIC
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bool
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select IRQ_DOMAIN
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config OMAP_IRQCHIP
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config ORION_IRQCHIP
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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 PIC32_EVIC
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bool
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select GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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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 GENERIC_IRQ_CHIP
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select IRQ_DOMAIN
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config ST_IRQCHIP
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bool
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select REGMAP
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select MFD_SYSCON
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help
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Enables SysCfg Controlled IRQs on STi based platforms.
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config TANGO_IRQ
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_CHIP
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config TB10X_IRQC
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bool
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select IRQ_DOMAIN
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select GENERIC_IRQ_CHIP
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config TS4800_IRQ
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tristate "TS-4800 IRQ controller"
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select IRQ_DOMAIN
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depends on HAS_IOMEM
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depends on SOC_IMX51 || COMPILE_TEST
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help
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Support for the TS-4800 FPGA IRQ controller
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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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config XTENSA_MX
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bool
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select IRQ_DOMAIN
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config IRQ_CROSSBAR
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bool
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help
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Support for a CROSSBAR ip that precedes the main interrupt controller.
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The primary irqchip invokes the crossbar's callback which inturn allocates
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a free irq and configures the IP. Thus the peripheral interrupts are
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routed to one of the free irqchip interrupt lines.
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config KEYSTONE_IRQ
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tristate "Keystone 2 IRQ controller IP"
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depends on ARCH_KEYSTONE
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help
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Support for Texas Instruments Keystone 2 IRQ controller IP which
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is part of the Keystone 2 IPC mechanism
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config MIPS_GIC
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bool
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select GENERIC_IRQ_IPI
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select IRQ_DOMAIN_HIERARCHY
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select MIPS_CM
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config INGENIC_IRQ
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bool
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depends on MACH_INGENIC
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default y
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config RENESAS_H8300H_INTC
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bool
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select IRQ_DOMAIN
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config RENESAS_H8S_INTC
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bool
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select IRQ_DOMAIN
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config IMX_GPCV2
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bool
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select IRQ_DOMAIN
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help
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Enables the wakeup IRQs for IMX platforms with GPCv2 block
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config IRQ_MXS
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def_bool y if MACH_ASM9260 || ARCH_MXS
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select IRQ_DOMAIN
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select STMP_DEVICE
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config MVEBU_ODMI
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bool
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select GENERIC_MSI_IRQ_DOMAIN
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config LS_SCFG_MSI
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def_bool y if SOC_LS1021A || ARCH_LAYERSCAPE
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depends on PCI && PCI_MSI
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select PCI_MSI_IRQ_DOMAIN
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config PARTITION_PERCPU
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bool
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config EZNPS_GIC
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bool "NPS400 Global Interrupt Manager (GIM)"
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depends on ARC || (COMPILE_TEST && !64BIT)
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select IRQ_DOMAIN
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help
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Support the EZchip NPS400 global interrupt controller
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