* implementing a custom uart driver
@ 2009-12-11 22:13 raychan
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From: raychan @ 2009-12-11 22:13 UTC (permalink / raw)
To: linux-kernel
Hi all,
I have been writing a custom uart driver for a SoC. It's not the 8520/16550 flavor so I ended up implementing a struct uart_driver on my own. However I am having some issues on the TX side.
If I put a printk statement after I enabled TX interrupts then it starts outputting characters. Otherwise the console will just get stuck. It is a memory mapped IO device, it does not support any modem control signals so I simply return TIOM_CTS | TIOCM_DSR | TIOCM_CD in the driver's get_mctrl function. Are there any other caveats that I should be aware of?
Thanks much
Ray
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