serial: 8250_mxpcie: implement rx_trig_bytes callbacks via MUEx50 RTL

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The MUEx50 UART exposes a programmable RX trigger level via the RTL
register.

Implement uart_port RX trigger set/get callbacks for the mxpcie driver
and wire them up to the generic rx_trig_bytes sysfs interface. Store the
configured trigger level in the per-port private data.

Signed-off-by: Crescent Hsieh <crescentcy.hsieh@moxa.com>
Link: https://patch.msgid.link/20260731074820.735619-15-crescentcy.hsieh@moxa.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Crescent Hsieh 2026-07-31 15:48:20 +08:00 • committed by Greg Kroah-Hartman

parent 8e929ae7c9

commit 4412f9d0df

1 changed files with 24 additions and 1 deletions

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

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