Messages in this thread | | | From | Mika Westerberg <> | Subject | [PATCH v2 0/3] ACPI: Translate Linux IRQ number directly from GpioInt | Date | Wed, 6 May 2015 13:29:05 +0300 |
| |
Hi,
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.
Thanks.
[1] https://lkml.org/lkml/2015/4/28/455 [2] https://lkml.org/lkml/2015/3/25/103
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(-)
-- 2.1.4
| |