This patch series adds hierarchical IRQ chip support to ssbi-gpio so that device tree consumers can request an IRQ directly from the GPIO block rather than having to request an IRQ from the underlying PMIC.
For more background information, see the email thread with Linus Walleij's excellent description of the problem at https://www.spinics.net/lists/linux-gpio/msg34655.html. This change was not tested on any actual hardware, however the same change was made to spmi-gpio and tested on a LG Nexus 5 (hammerhead) phone. That patch series is available at https://lore.kernel.org/lkml/20190119204252.18370-1-masn...@onstation.org/ and is queued for the next merge window. Brian Masney (9): pinctrl: qcom: ssbi-gpio: hardcode IRQ counts genirq: introduce irq_domain_translate_twocell mfd: pm8xxx: convert to v2 irq interfaces to support hierarchical IRQ chips mfd: pm8xxx: disassociate old virq if hwirq mapping already exists qcom: ssbi-gpio: add support for hierarchical IRQ chip arm: dts: qcom: apq8064: add interrupt controller properties arm: dts: qcom: msm8660: add interrupt controller properties arm: dts: qcom: mdm9615: add interrupt controller properties mfd: pm8xxx: revert "disassociate old virq if hwirq mapping already exists" arch/arm/boot/dts/qcom-apq8064.dtsi | 46 +------ arch/arm/boot/dts/qcom-mdm9615.dtsi | 9 +- arch/arm/boot/dts/qcom-msm8660.dtsi | 47 +------ drivers/mfd/qcom-pm8xxx.c | 86 +++++++----- drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c | 161 +++++++++++++++++++---- include/linux/irqdomain.h | 5 + kernel/irq/irqdomain.c | 21 +++ 7 files changed, 218 insertions(+), 157 deletions(-) -- 2.17.2
