serial: 8250_mxpcie: enable automatic RTS/CTS flow control

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The MUEx50 UART supports automatic RTS/CTS flow control via the enhanced
feature register.

Implement a mxpcie-specific set_termios() callback that enables MUEx50
auto-RTS/auto-CTS when CRTSCTS is requested and disables it otherwise.
Keep the 8250 port status flags in sync with the hardware configuration.

Signed-off-by: Crescent Hsieh <crescentcy.hsieh@moxa.com>
Link: https://patch.msgid.link/20260731074820.735619-5-crescentcy.hsieh@moxa.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Crescent Hsieh 2026-07-31 15:48:10 +08:00 • committed by Greg Kroah-Hartman

parent 0a53c72969

commit 55edf8511f

1 changed files with 28 additions and 0 deletions

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drivers/tty/serial/8250/8250_mxpcie.c

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