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How does the tty driver interact with the UART driver during read / write?

I am working on modifying / developing the SDIO UART driver.
And I would like to know:

How does the tty driver interact with the UART driver during read / write operations? I'm interested in buffer management.

I searched through the network, but did not find the necessary information.
Can anyone shed some light on this?

Thanks in advance.

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1 answer

The following links helped me understand TTY level operations. The read / write operations of the TTY driver are a little difficult to understand, though ..

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