This patch series adds hierarchical IRQ chip support to spmi-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. The first two patches in this series removes some IRQ count code that was causing the IRQs to be prematurely initialized. Patch three converts pmic-arb to use the version 2 IRQ interface. Patches 4/5 add support for the hierarchical IRQ chip to spmi-gpio. 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. Patches 3-5 need to be applied in the order that are presented here in order to allow for a proper bisection. Patch 5 depends on the presence of 1-4. Part of the series can be applied without any breakage. This work was tested on a LG Nexus 5 (hammerhead) phone. My status page at https://masneyb.github.io/nexus-5-upstream/ describes what is working so far with an upstream kernel. High-level changes since v1: - Patches 1 and 2 are new. This brought in a third subsystem (mfd). - I have detailed changelogs attached to the notes on patches 3-5. Brian Masney (5): spmi: pmic-arb: hardcode IRQ counts mfd: qcom-spmi-pmic: use devm_mfd_add_devices instead of devm_of_platform_populate spmi: pmic-arb: convert to v2 irq interfaces to support hierarchical IRQ chips qcom: spmi-gpio: add support for hierarchical IRQ chip ARM: dts: qcom: msm8974: add interrupt controller properties arch/arm/boot/dts/qcom-pm8941.dtsi | 39 +----- drivers/mfd/Kconfig | 1 + drivers/mfd/qcom-spmi-pmic.c | 61 ++++++++- drivers/pinctrl/qcom/pinctrl-spmi-gpio.c | 160 +++++++++++++++++++---- drivers/spmi/spmi-pmic-arb.c | 58 +++++--- 5 files changed, 233 insertions(+), 86 deletions(-) -- 2.17.2
