Hi, Previously I sent a patch that enables GPIO interrupts for i2c-hid. This was not accepted by the community: https://lkml.org/lkml/2015/1/26/398 However, it turned out that there are actually device(s) out there that need this support. One of them is Lenovo Thinkpad 10. It has touch screen connected to IO-APIC but in addition it includes Wacom digitizer that uses GPIO as an interrupt. In this version of the patch, I limited the GPIO retrieving code path to be taken only when the device is enumerated from ACPI. This allows DT to use whatever is the appropriate mechanism to represent GPIO/interrupt configuration and still makes current ACPI based devices to work. The first two patches are needed to get the Wacom digitizer work properly with i2c-hid. Mika Westerberg (3): HID: wacom: Add support for I2C connected devices HID: i2c-hid: Read wMaxInputLength of input report instead of bufsize HID: i2c-hid: Add support for ACPI GPIO interrupts drivers/hid/i2c-hid/i2c-hid.c | 76 +++++++++++++++++++++++++++++++++---------- drivers/hid/wacom_wac.c | 5 +++ 2 files changed, 63 insertions(+), 18 deletions(-) -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
