[This patch series used to be called "Making the generic ACPI GSI layer irqdomain aware", but as I've radically changed my approach to this problem, I've decided to reset the counters...] The irqdomain code is not entierely ACPI friendly, as it has some built-in knowledge of the device-tree. Nothing too harmful, but enough to scare the ARM ACPI developpers which end up with their own version of the square wheel. And some of the ramifications actually run deeper than initially expected. This series adapts the irqdomain code to use 'struct fwnode_handle' instead of 'struct device_node' as the identifier for a domain (compatibility interfaces are of course added). It also introduces a generic IRQ specifier that firmware interfaces (DT or ACPI) can directly use to configure interrupts, and allow the ACPI GSI code to be plugged into this. As examples, we convert the ARM GIC ACPI support to use irqdomains as originally intended, and rework the MSI code to also move away from using device nodes when using irqdomains. Overall, this gives us a way to use irqdomains on both DT and ACPI enabled platforms, having very little changes made to the actual drivers (other than the probing infrastructure). Because we keep the flow of information between the various layers identical between ACPI and DT, we immediately benefit from the existing infrastructure. This has been test-booted on Juno, is based on 4.3-rc4, and available at: git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/irq-domain-fwnode-v1 Marc Zyngier (16): irqdomain: Use an accessor for the of_node field irqdomain: Convert irqdomain->of_node to fwnode irqdomain: Allow irq domain lookup by fwnode irqdomain: Introduce a firmware-specific IRQ specifier structure irqchip: Convert all alloc/xlate users from of_node to fwnode irqdomain: Introduce irq_create_fwspec_mapping irqdomain: Introduce irq_domain_create_{linear,tree} irqdomain: Add a fwnode_handle allocator acpi/gsi: Always perform an irq domain lookup acpi/gsi: Add acpi_set_irq_model to initialize the GSI layer irqchip/gic: Get rid of gic_init_bases() irqchip/gic: Switch ACPI support to stacked domains irqchip/gic: Kill the xlate method acpi/gsi: Cleanup acpi_register_gsi irqdomain: Introduce irq_domain_create_hierarchy irqdomain/msi: Use fwnode instead of of_node arch/arm/mach-exynos/suspend.c | 55 ++++---- arch/arm/mach-imx/gpc.c | 55 ++++---- arch/arm/mach-omap2/omap-wakeupgen.c | 55 ++++---- arch/c6x/platforms/megamod-pic.c | 2 +- arch/mips/cavium-octeon/octeon-irq.c | 4 +- arch/powerpc/platforms/cell/axon_msi.c | 2 +- arch/powerpc/platforms/cell/spider-pic.c | 9 +- arch/powerpc/platforms/pasemi/msi.c | 6 +- arch/powerpc/platforms/powernv/opal-irqchip.c | 2 +- arch/powerpc/sysdev/ehv_pic.c | 3 +- arch/powerpc/sysdev/fsl_msi.c | 2 +- arch/powerpc/sysdev/i8259.c | 3 +- arch/powerpc/sysdev/ipic.c | 3 +- arch/powerpc/sysdev/mpic.c | 3 +- arch/powerpc/sysdev/mpic_msi.c | 2 +- arch/powerpc/sysdev/qe_lib/qe_ic.c | 3 +- drivers/acpi/gsi.c | 54 ++++---- drivers/base/platform-msi.c | 6 +- drivers/gpio/gpio-sodaville.c | 2 +- drivers/irqchip/exynos-combiner.c | 2 +- drivers/irqchip/irq-atmel-aic-common.c | 2 +- drivers/irqchip/irq-crossbar.c | 62 ++++----- drivers/irqchip/irq-gic-v2m.c | 23 ++-- drivers/irqchip/irq-gic-v3-its-pci-msi.c | 3 +- drivers/irqchip/irq-gic-v3-its-platform-msi.c | 3 +- drivers/irqchip/irq-gic-v3-its.c | 20 +-- drivers/irqchip/irq-gic-v3.c | 49 ++++---- drivers/irqchip/irq-gic.c | 94 ++++++++------ drivers/irqchip/irq-hip04.c | 2 +- drivers/irqchip/irq-imx-gpcv2.c | 64 +++++----- drivers/irqchip/irq-mtk-sysirq.c | 49 ++++---- drivers/irqchip/irq-nvic.c | 18 ++- drivers/irqchip/irq-s3c24xx.c | 4 +- drivers/irqchip/irq-tegra.c | 55 ++++---- drivers/irqchip/irq-vf610-mscm-ir.c | 45 ++++--- drivers/pci/host/pci-xgene-msi.c | 2 +- drivers/pci/msi.c | 14 +-- drivers/spmi/spmi-pmic-arb.c | 2 +- include/linux/acpi.h | 3 + include/linux/fwnode.h | 1 + include/linux/irqchip/arm-gic.h | 9 +- include/linux/irqdomain.h | 86 +++++++++++-- include/linux/msi.h | 9 +- kernel/irq/irqdomain.c | 173 ++++++++++++++++++++------ kernel/irq/msi.c | 8 +- 45 files changed, 665 insertions(+), 408 deletions(-) -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html