tree 72891a503d0271a52ae54d6151df32d584d9dfa5
parent 1418f9e6e02da2ad0a6aacc8645e6ad7496105e9
author Alexander Stein <alexander.stein@systec-electronic.com> 1458752487 +0100
committer Linus Walleij <linus.walleij@linaro.org> 1459413710 +0200

gpio: mcp23s08: Add support for level triggered interrupts

The interrupt for the corresponding pin is configured to trigger when the
pin state changes compared to a preconfigured state (Bit set in INTCON).
This state is set by setting/clearing the bit in DEFVAL.
In the interrupt handler we need also to check if the bit in INTCON is set
for level triggered interrupts.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>