From: Linus Walleij <linus.wall...@linaro.org> The AB8500/ABx500 PMIC ASICs have a real interesting way of handling GPIO interrupts. They can trigger both on rising and falling edge but will fire two different physical hwirqs for rising resp. falling edge.
The complexity was kept in the abx500 pinctrl driver by heritage from the ab8500 GPIO driver. That one was however severely broken and this was part of the brokenness. This series tries to decrease the complexity by moving the interrupt handling back into the AB8500 core and letting the ABx500 pinctrl driver rely on the irqdomain stored inside the mfd device. The basic design problem with the old driver was that it was modeling a *cascading* interrupt controller off the AB8500 core, whereas what we want is actually a *merging* interrupt controller, that will take two physical hwirqs and associate them with *one* Linux IRQ. The right place to handle this is in the AB8500 core. Lee Jones (13): mfd: ab8500: prepare to handle AB8500 GPIO's IRQs correctly mfd: ab8500: provide a irq_set_type() function mfd: ab8500: ensure new AB8500 pinctrl driver is probed correctly mfd: ab8500: allow AB9540 based devices to use ABX500 pinctrl pinctrl/abx500: prevent error path from corrupting returning error pinctrl/abx500: align GPIO cluster boundaries pinctrl/abx500: move IRQ handling to ab8500-core pinctrl/abx500: replace IRQ offsets with table read-in values pinctrl/abx500: add Device Tree support ARM: ux500: remove irq_base property from platform_data ARM: ux500: use real AB8500 IRQ numbers instead of virtual ones ARM: ux500: enable AB8500 GPIO for HREF ARM: ux500: allow Snowball access to the AB8500 GPIO pins Linus Walleij (1): pinctrl/abx500: use direct IRQ defines arch/arm/boot/dts/hrefprev60.dts | 8 + arch/arm/boot/dts/snowball.dts | 4 + arch/arm/mach-ux500/board-mop500.c | 1 - .../mach-ux500/include/mach/irqs-board-mop500.h | 10 +- drivers/mfd/ab8500-core.c | 37 ++- drivers/pinctrl/pinctrl-ab8500.c | 6 +- drivers/pinctrl/pinctrl-ab8505.c | 10 +- drivers/pinctrl/pinctrl-ab8540.c | 5 +- drivers/pinctrl/pinctrl-ab9540.c | 8 +- drivers/pinctrl/pinctrl-abx500.c | 365 +++------------------ drivers/pinctrl/pinctrl-abx500.h | 10 +- include/linux/mfd/abx500/ab8500-gpio.h | 1 - 12 files changed, 120 insertions(+), 345 deletions(-) -- 1.7.11.3 -- 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/
