| From: |
| Crescent Hsieh <crescentcy.hsieh-AT-moxa.com> |
| To: |
| Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org>, Johan Hovold <johan-AT-kernel.org> |
| Subject: |
| [PATCH v1 0/4] usb: serial: mxuport: extend MXU50U support and runtime controls |
| Date: |
| Tue, 24 Mar 2026 11:50:37 +0800 |
| Message-ID: |
| <20260324035041.352190-1-crescentcy.hsieh@moxa.com> |
| Cc: |
| linux-usb-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, Crescent Hsieh <crescentcy.hsieh-AT-moxa.com> |
| Archive-link: |
| Article |
This series extends the mxuport driver for additional MXU50U-based devices
and adds runtime configuration support for interface mode and UART FIFO
control.
The first patch adds support for additional 3-, 5-, 6-, and 7-port MXU50U
devices and updates the firmware selection logic accordingly.
The second patch implements TX flow control based on the device SEND_NEXT
event so the driver stops queueing bulk-out data once the device buffer is
full and resumes when the device is ready again.
The third patch adds serial interface mode configuration through
TIOCSRS485/TIOCGRS485, allowing userspace to switch between RS232, RS422,
2-wire RS485, and 4-wire RS485 modes.
The final patch adds a per-port sysfs attribute for controlling the UART
FIFO state at runtime.
Together these changes improve hardware coverage and expose the runtime
controls supported by the device firmware.
Crescent Hsieh (4):
usb: serial: mxuport: add support for more MXU50U UART devices
usb: serial: mxuport: handle SEND_NEXT tx flow control
usb: serial: mxuport: support serial interface mode configuration
usb: serial: mxuport: add sysfs control for UART FIFO
drivers/usb/serial/mxuport.c | 319 +++++++++++++++++++++++++++++++++--
1 file changed, 305 insertions(+), 14 deletions(-)
--
2.43.0
