On Tue, Jul 21, 2015 at 11:07:55AM +0100, Marc Zyngier wrote: > 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. > I have tested this series on Seattle and it looks excellent to me. Graeme > 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 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- 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
