Hi Thomas, On Tuesday 03 December 2013 03:57 PM, Sricharan R wrote: > Some socs have a large number of interrupts requests to service > the needs of its many peripherals and subsystems. All of the interrupt > requests lines from the subsystems are not needed at the same > time, so they have to be muxed to the controllers appropriately. > In such places a interrupt controllers are preceded by an > IRQ CROSSBAR that provides flexibility in muxing the device interrupt > requests to the controller inputs. > > This series models the peripheral interrupts that can be routed through > the crossbar to the GIC as 'routable-irqs'. The routable irqs are added > in a separate linear domain inside the GIC. The registered routable domain's > callback are invoked as a part of the GIC's callback, which in turn should > allocate a free irq line and configure the IP accordingly. So every peripheral > in the dts files mentions the fixed crossbar number as its interrupt. A free > gic line for that gets allocated and configured when the peripheral interrupts > are mapped. > > The minimal crossbar driver to track and allocate free GIC lines and configure the > crossbar is added here, along with the DT bindings. > > V5: > Addressed a comment from Mark Rutland <mark.rutland@xxxxxxx>, > updated tags and rebased on 3.13-rc2 > > V4: > Addressed a couple of comments and split the DTS file updates in to > a separate series. > > V3: > Addressed few more comments from Thomas Gleixner <tglx@xxxxxxxxxxxxx> > > Rebased patches 3,4,5,7 which updates the DTS file on top of below branch > git://git.kernel.org/pub/scm/linux/kernel/git/bcousson/linux-omap-dt.git > for_3.13/dts > > Rebased patches 1,2,6 on top of 3.12 mainline > Updated Commit tags > > V2: > Addressed Thomas Gleixner <tglx@xxxxxxxxxxxxx> comments and > Kumar Gala <galak@xxxxxxxxxxxxxx> > > Split updating the DRA7.dtsi file for adding the routable-irqs > > Previous discussions that led to this is at > https://lkml.org/lkml/2013/9/18/540 > > The V1,V2,V3,V4 post of these patches is at > [V1] https://lkml.org/lkml/2013/9/30/283 > [V2] http://www.spinics.net/lists/linux-omap/msg99540.html > [V3] http://www.kernelhub.org/?msg=356470&p=2 > [V4] http://www.spinics.net/lists/linux-doc/msg16726.html > > Sricharan R (4): > DRIVERS: IRQCHIP: IRQ-GIC: Add support for routable irqs > DRIVERS: IRQCHIP: CROSSBAR: Add support for Crossbar IP > ARM: OMAP4+: Correct Wakeup-gen code to use physical irq number > ARM: DRA: Enable Crossbar IP support for DRA7XX > > Documentation/devicetree/bindings/arm/gic.txt | 6 + > .../devicetree/bindings/arm/omap/crossbar.txt | 27 +++ > arch/arm/mach-omap2/Kconfig | 1 + > arch/arm/mach-omap2/omap-wakeupgen.c | 4 +- > arch/arm/mach-omap2/omap4-common.c | 2 + > drivers/irqchip/Kconfig | 8 + > drivers/irqchip/Makefile | 1 + > drivers/irqchip/irq-crossbar.c | 208 ++++++++++++++++++++ > drivers/irqchip/irq-gic.c | 81 +++++++- > include/linux/irqchip/arm-gic.h | 7 +- > include/linux/irqchip/irq-crossbar.h | 11 ++ > 11 files changed, 343 insertions(+), 13 deletions(-) > create mode 100644 Documentation/devicetree/bindings/arm/omap/crossbar.txt > create mode 100644 drivers/irqchip/irq-crossbar.c > create mode 100644 include/linux/irqchip/irq-crossbar.h > I have addressed all the comments on this series, can this be merged now ? Regards, Sricharan -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
