On Thursday 24 October 2013 03:08 PM, Kumar Gala wrote: > On Sep 30, 2013, at 8:59 AM, Sricharan R wrote: > >> In some socs the gic can be preceded by a crossbar IP which >> routes the peripheral interrupts to the gic inputs. The peripheral >> interrupts are associated with a fixed crossbar input line and the >> crossbar routes that to one of the free gic input line. >> >> The DT entries for peripherals provides the fixed crossbar input line >> as its interrupt number and the mapping code should associate this with >> a free gic input line. This patch adds the support inside the gic irqchip >> to handle such routable irqs. The routable irqs are registered in a linear >> domain. The registered routable domain's callback should be implemented >> to get a free irq and to configure the IP to route it. >> >> Cc: Thomas Gleixner <t...@linutronix.de> >> Cc: Linus Walleij <linus.wall...@linaro.org> >> Cc: Santosh Shilimkar <santosh.shilim...@ti.com> >> Cc: Russell King <li...@arm.linux.org.uk> >> Cc: Tony Lindgren <t...@atomide.com> >> Cc: Rajendra Nayak <rna...@ti.com> >> Cc: Marc Zyngier <marc.zyng...@arm.com> >> Cc: Grant Likely <grant.lik...@linaro.org> >> Cc: Rob Herring <rob.herr...@calxeda.com> >> Signed-off-by: Sricharan R <r.sricha...@ti.com> >> --- >> Documentation/devicetree/bindings/arm/gic.txt | 5 +++ >> arch/arm/boot/dts/dra7.dtsi | 1 + >> drivers/irqchip/irq-gic.c | 57 >> +++++++++++++++++++++---- >> include/linux/irqchip/arm-gic.h | 8 +++- >> 4 files changed, 61 insertions(+), 10 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/arm/gic.txt >> b/Documentation/devicetree/bindings/arm/gic.txt >> index 3dfb0c0..2d8c680 100644 >> --- a/Documentation/devicetree/bindings/arm/gic.txt >> +++ b/Documentation/devicetree/bindings/arm/gic.txt >> @@ -49,6 +49,11 @@ Optional >> regions, used when the GIC doesn't have banked registers. The offset is >> cpu-offset * cpu-nr. >> >> +- routable-irqs : Total number of gic irq inputs which are not directly >> + connected from the peripherals, but are routed dynamically >> + by a crossbar/multiplexer preceding the GIC. The GIC irq >> + input line is assigned dynamically when the corresponding >> + peripheral's crossbar line is mapped. > arm,routable-irqs ok will change here as well.
Thanks for reviewing. Regards, Sricharan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
