The Tegra210 has a 2nd level interrupt controller located in a separate power domain to the main GIC interrupt controller and hence requires runtime-pm support. Add a platform driver for the GICs that require runtime-pm and make the necessary changes to the genirq and irqdomain core to support IRQ chips that require runtime-pm. This series is based upon Marc Z's irq/irqchip-v4.7-rc1 branch [0]. Changes since V5: - Add call to pm_runtime_put_noidle() if irq-chip pm_runtime_get_sync() fails. - Removed unnecessary whitespace that was added incorrectly. Changes since V4: - Removed header file drivers/irqchip/irq-gic.h. - Avoid exporting gic_handle_cascade_irq entry point. - Renamed of_gic_init() to gic_of_init_child() to distinguish it from the existing gic_of_int(). - Corrected preprocessor directive for CONFIG_ARM_GIC_PM. Changes since V3: - Split the series into two, placing the clean-up/fixes patches into another series [1]. The remaining patches in this series are for adding runtime-pm support for irqchips and adding a platform driver of second level GICs. - Dropped the patch to prevent early init of GICs if 'clocks' or 'power-domains' properties are present and re-added the patch to add the compatibilty string for the Tegra210 AGIC. Changes since V2: - Corrected RPM support for irqchips in genirq core as pointed out by Kevin Hilman. - Corrected patch to save the irq type when mapping the interrupt. - Dropped changes to DT binding documentation and added patch to prevent early init of GICs if the 'clocks' and/or 'power-domains' DT properties are present (as we have discussed). - Moved platform driver code into it's own source file. - Separate changes for preparing for the platform driver into 3 patches in an attempt to make it more readable! - Added fix for checking an interrupt descriptor is valid during IRQ setup. Changes since V1: - Updated GIC to only WARN and not return an error if configuring a PPI fails but will still return an error if an SPI fails (per discussion with Marc). - Dropped change to mask sense bits for GIC-v3 (as this is not necessary) - Split patch to avoid setting interrupt type when mapping the IRQ into two patches per TGLX's feedback. - Changed name of irqchip device structure to "parent_device" - Moved call to irq_chip_pm_get() outside of chip_bus_lock(). - Dropped patch to remove clock names from GIC DT documentation and added AGIC clock names. - Update GIC platform driver to look-up clocks names from static list. [0] http://git.kernel.org/cgit/linux/kernel/git/maz/arm-platforms.git/log/?h=irq/irqchip-4.7-rc1 [1] http://marc.info/?l=linux-tegra&m=146289329915585&w=2 Jon Hunter (9): irqdomain: Fix handling of type settings for existing mappings genirq: Look-up trigger type if not specified by caller irqdomain: Don't set type when mapping an IRQ genirq: Add runtime power management support for IRQ chips irqchip/gic: Isolate early GIC initialisation code irqchip/gic: Add helper function for chip initialisation irqchip/gic: Prepare for adding platform driver dt-bindings: arm-gic: Add documentation for Tegra210 AGIC irqchip/gic: Add platform driver for non-root GICs that require RPM .../bindings/interrupt-controller/arm,gic.txt | 3 +- drivers/irqchip/Kconfig | 6 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-gic-common.c | 4 +- drivers/irqchip/irq-gic-pm.c | 184 +++++++++++++++++++++ drivers/irqchip/irq-gic.c | 132 ++++++++++----- include/linux/irq.h | 4 + include/linux/irqchip/arm-gic.h | 11 ++ include/linux/irqdomain.h | 3 + kernel/irq/chip.c | 40 +++++ kernel/irq/internals.h | 1 + kernel/irq/irqdomain.c | 58 ++++++- kernel/irq/manage.c | 38 ++++- 13 files changed, 433 insertions(+), 52 deletions(-) create mode 100644 drivers/irqchip/irq-gic-pm.c -- 2.1.4 -- 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
