Re: [PATCH] serial driver PMC MSP71xx, kernel linux-mips.git mast er

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Marc St-Jean wrote:

>> >>This I would hope you can hide in the platform specific
>> >>serial_in/serial_out functions. If you write the UART_LCR save it in
>> >>serial_out(), if you read IER etc.

>> > I couldn't find hooks for platform specific serial_in/out functions.

>>    It's because there are none. :-)

>> > Do you mean using the up->port.iotype's in serial_in/out from 8250.c?

>>    Not sure what Alan meant, but this seems the only option for now.

> That's the conclusion I came to. I've rewritten the patch to use port.type
> instead of iotype since one of the fix is SoC and not UART specific. I guess

    I failed to folkow your logic. :-)

> I could use both iotype and type with a test on each for the appropriate
> bug, what do you recommend?

    I think iotype would be enough. You can't pass type for platform devices 
anyway, IIRC (the thing I don't quite like).

>>  >>And we might want to add a void * for board specific insanity to the 8250
>> >>structures if we really have to so you can hang your brain damage
>> >>privately off that ?

>> > Sounds good to me, it would give us a location to store the address of the
>> > UART_STATUS_REG required by this UART variant.

>>    I doubt we really need to *store* it somewhere. Isn't it an fixed offset
>>from UART's base (I haven't seen the header)?

> Unfortunately it's not a constant offset from the UART in the SoC register

    Hm...

> space. I've used Alan suggestion and added a classic, on some other OSes %-|,
> void "user" pointer.

    Only do not do it under #ifdef.

> Marc

WBR, Sergei