On 05/02/15 23:33, Bjorn Andersson wrote: > On Wed, Jan 7, 2015 at 9:51 AM, Marc Zyngier <marc.zyngier@xxxxxxx> wrote: >> There is a number of cases where a kernel subsystem may want to >> introspect the state of an interrupt at the irqchip level: >> >> - When a peripheral is shared between virtual machines, >> its interrupt state becomes part of the guest's state, >> and must be switched accordingly. KVM on arm/arm64 requires >> this for its guest-visible timer >> - Some GPIO controllers seem to require peeking into the >> interrupt controller they are connected to to report >> their internal state >> >> This seem to be a pattern that is common enough for the core code >> to try and support this without too many horrible hacks. Introduce >> a pair of accessors (irq_get_irqchip_state/irq_set_irqchip_state) >> to retrieve the bits that can be of interest to another subsystem: >> pending, active, and masked. >> >> - irq_get_irqchip_state returns the state of the interrupt according >> to a parameter set to IRQCHIP_STATE_PENDING, IRQCHIP_STATE_ACTIVE, >> IRQCHIP_STATE_MASKED or IRQCHIP_STATE_LINE_LEVEL. >> - irq_set_irqchip_state similarly sets the state of the interrupt. >> >> Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx> >> Tested-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx> >> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> > > Any update on the status of this? > > I would like to be able to move ahead with the pinctrl driver for the > Qualcomm PM8921 pmic, that depends on this being in place. None so far. Thomas, do you have any comment on this one? Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
