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| /linux/drivers/usb/serial/ |
| H A D | cp210x.c | diff 15fb84b741966c8a08e02e145ec5932d51b6c4ad Mon Jan 28 06:57:17 CET 2019 Icenowy Zheng <icenowy@aosc.io> USB: serial: cp210x: add GPIO support for CP2104
The CP2104 chips feature 4 controllable GPIO pins, which are similar to
the ones on CP2102N chip (output-only when push-pull, output or
simulated input mode when open-drain).
Add support for the GPIO pins for cp210x driver. The pin get/set routine
is shared with CP2102N, but the pinconf initialization code is not
shared because the acquisition of GPIO configuration in OTP ROM is
similar to CP2105, not CP2102N.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Johan Hovold <johan@kernel.org>
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