On 09/05/12 15:12, Alan Cox wrote:
> - Should I add a UPIO_SPI to the global I/O types, or should I override the
> serial_in/serial_out functions in struct plat_serial8250_port?
I am not sure you'll make the 8250 driver handle the device because I
suspect a lot of the serial_in/serial_out calls occur with interrupts
disabled on the assumption that they are basically atomic fast operations.
Argh, that's right.
So it will be a completely new driver then. Using the tty layer directly seems
to be a good suggestion: it looks like the uart layer (like the 8250 driver) is
carrying a lot of cruft for supporting all those quirks in the different devices.
ifx6x60 looks like a good source of inspiration.
Regards,
Arnout
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