RFC omap-serial: A way to implement modem lines through GPIO
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- v1 RFC Latest2 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | omap-serial: Overriding omap-serial built in serial_in/out functionsarch/ drivers/ | +18 | 0 replies | |
| 2/2 | omap-serial: Allow board files to override serial_in/outarch/ arch/ | +30 | 0 replies |
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Cover letter [RFC PATCH 0/2] omap-serial: A way to implement modem lines through GPIO
Hello,
At least in the am3505/3517 CPUs, the built-in uarts only expose the RX/TX/RTS/CTS signals. Other signals such as DTR/DSR/RI and DCD, while very useful when controlling a modem, are not available.
My design has the above mentioned extra signals wired to GPIOs. Controlling them through sysfs is possible, but not convenient as I needed the standard serial port ioctls to work.
There did not seem to be anything in place to do this so I've come up with the following two patches which I am using for now.
What do you think? Is there a simpler, more obvious solution? Did anyone attempt doing something to attain a similar goal in the past?
Best regards,
Raphaël Assénat
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