The irqdomain code is not entierely really 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. 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. I'd really like to hear what people think of that approach, as it looks to me a lot simpler than the other approaches currently put on the list. 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, and is based on my irq/ncpi-msi-2 branch. Marc Zyngier (5): genirq: irqdomain: Use an accessor for the of_node field genirq: irqdomain: Remove irqdomain dependency on struct device_node genirq: irqdomain: Add irq_create_acpi_mappings acpi: gsi: Use acpi_gsi_descriptor to allocate interrupts irqchip: GIC: Switch ACPI support to stacked domains 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/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/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 | 17 ++--- 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 | 9 +++ include/linux/irqchip/arm-gic.h | 2 +- include/linux/irqdomain.h | 67 +++++++++++-------- kernel/irq/irqdomain.c | 95 +++++++++++++++++++++------ 30 files changed, 206 insertions(+), 109 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
