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Subject[PATCH v2 0/3] ACPI: Translate Linux IRQ number directly from GpioInt

This is second iteration of the series. The previous version can be found
from [1].

Currently drivers for ACPI enumerated devices that have their interrupt
line connected to a GPIO controller instead of IO-APIC are required to do
complete gpiod_get()/gpiod_to_irq() etc. dance themselves. This adds
unnecessary lines of code to these drivers.

It turned out that DT solved the problem already with introduction of
of_irq_get() which is able to handle GPIO based interrupts as well through
irqchip API [2].

The following three patches achieve the same for ACPI by introducing new
function acpi_dev_gpio_irq_get() that is then used in I2C core to automatically
translate ACPI GpioInt resource to Linux IRQ number.

Changes to the previous version:
- Added Rafael's ack to the first patch
- Introduce new patch that makes I2C ACPI slave enumeration code use 0 to mean
no interrupt.

If no objections, I would like this to merged via either I2C or GPIO trees.



Mika Westerberg (3):
gpio / ACPI: Add support for retrieving GpioInt resources from a device
i2c / ACPI: Use 0 to indicate that device does not have interrupt assigned
i2c / ACPI: Assign IRQ for devices that have GpioInt automatically

drivers/gpio/gpiolib-acpi.c | 29 +++++++++++++++++++++++++++++
drivers/i2c/i2c-core.c | 12 ++++++++----
include/linux/acpi.h | 7 +++++++
3 files changed, 44 insertions(+), 4 deletions(-)


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