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| /linux/drivers/usb/serial/ |
| H A D | cp210x.c | diff 6f7ec77cc8b64ff5037c1945e4650c65c458037d Fri May 28 22:39:31 CEST 2021 Stefan Agner <stefan@agner.ch> USB: serial: cp210x: fix alternate function for CP2102N QFN20
The QFN20 part has a different GPIO/port function assignment. The
configuration struct bit field ordered as TX/RX/RS485/WAKEUP/CLK
which exactly matches GPIO0-3 for QFN24/28. However, QFN20 has a
different GPIO to primary function assignment.
Special case QFN20 to follow to properly detect which GPIOs are
available.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Link: https://lore.kernel.org/r/51830b2b24118eb0f77c5c9ac64ffb2f519dbb1d.1622218300.git.stefan@agner.ch
Fixes: c8acfe0aadbe ("USB: serial: cp210x: implement GPIO support for CP2102N")
Cc: stable@vger.kernel.org # 4.19
Signed-off-by: Johan Hovold <johan@kernel.org>
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