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arm64: add a GPIO driver for Apple Silicon

Description

arm64: add a GPIO driver for Apple Silicon

This is a ported version of OpenBSD's work, modulo interrupt
functionality. We won't need GPIO interrupts until we start to get
closer to audio support, and the existing version is sufficient for,
e.g., pcie.

Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D49630

Details

Provenance
kevansAuthored on Thu, Apr 3, 1:11 AM
Reviewer
andrew
Differential Revision
D49630: arm64: add a GPIO driver for Apple Silicon
Parents
rGd0b59c4d3a09: kern_mkdirat(): unconditionally provide the out label
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