[WCNCR00147547] misc: Auto enable SDIO async-IRQ
[Description]
Add auto enable SDIO async-IRQ
MT7668S do have async-IRQ capability.
With async-IRQ enabled, it can work for both normal/async IRQ mode.
For some SDIO hosts, host drivers do not follow SDIO SPEC.
They use async-IRQ but do not write proper configurations to CCCR.
To avoid host driver's misbehavior, we enable async-IRQ automatically
in MT7668S driver.
Auto enable flow:
1. If SAI(CCCR, addr 0x16, bit 0) is enabled
2. If EAI(CCCR, addr 0x16, bit 1) is disabled
3. Enable EAI by MT7668S driver
Feature: misc
Change-Id: Ibbf081110403139e1737569fb4f1d2dcdcee99c6
CR-Id: WCNCR00147547
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
2 files changed
