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. This small patch series adapt the irqdomain code to remove the hurdles that prevent the full blown irqdomain subsystem to be used on ACPI, creates an interface between the GSI layer and the irqdomain, and as an example, convert the ARM GIC ACPI support to use irqdomains as originally intended. It also gives a way for non-DT systems to lookup irqdomains using arbitrary identifiers. 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. The "convert the GSI information to be DT friendly" is admitedly not very pretty, but I see it as a stepping stone towards unifying the two structures. This has been test-booted on Juno, is based on 4.3-rc1, and available at: git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/gsi-irq-domain-v3 * From v2: - Rebased on vanilla 4.3-rc1 - Added the IDR infrastructure to irqdomain.c so that drivers don't have to come up with their own way of allocating identifiers - Changed the acpi_set_irq_model() signature to directly take a void *domain_token * From v1: - Improved my Coccinelle foo and hopefully caught all the irq_domain.of_node users this time - Decoupled acpi_irq_model from domain_token. These are now two separate values that can be set independently - Moved the duty of populating acpi_gsi_descriptor to the interrupt controller, as it keeps the knowledge of the mapping with of_phandle_args in a single location - Generic accessor to set acpi_irq_model, domain_token and the populate function all in one go from the interrupt controller - General cleanup Marc Zyngier (8): genirq: irqdomain: Use an accessor for the of_node field genirq: irqdomain: Remove irqdomain dependency on struct device_node genirq: irqdomain: Allow a domain to be identified with non-DT data genirq: irqdomain: Add irq_create_acpi_mapping acpi: gsi: Always perform an irq domain lookup acpi: gsi: Add acpi_set_irq_model to initialize the GSI layer irqchip: GIC: Switch ACPI support to stacked domains acpi: gsi: Cleanup acpi_register_gsi arch/arm/mach-exynos/suspend.c | 4 +- arch/arm/mach-imx/gpc.c | 4 +- arch/arm/mach-omap2/omap-wakeupgen.c | 4 +- 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 | 60 ++++--- 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 | 4 +- drivers/irqchip/irq-gic-v2m.c | 2 +- drivers/irqchip/irq-gic-v3-its.c | 2 +- drivers/irqchip/irq-gic-v3.c | 2 +- drivers/irqchip/irq-gic.c | 54 ++++-- drivers/irqchip/irq-hip04.c | 2 +- drivers/irqchip/irq-mtk-sysirq.c | 2 +- drivers/irqchip/irq-s3c24xx.c | 4 +- drivers/irqchip/irq-tegra.c | 4 +- drivers/irqchip/irq-vf610-mscm-ir.c | 5 +- drivers/spmi/spmi-pmic-arb.c | 2 +- include/linux/acpi.h | 14 ++ include/linux/irqdomain.h | 74 ++++---- kernel/irq/irqdomain.c | 235 +++++++++++++++++++++++--- 34 files changed, 402 insertions(+), 126 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