Re: [PATCH v2] serial: sh-sci: modify sci_break_ctl()

["Shimoda, Yoshihiro" <yoshihiro.shimoda.uh@renesas.com>]

2012/04/11 13:28, Paul Mundt wrote:
> On Fri, Apr 06, 2012 at 02:39:00PM +0900, Shimoda, Yoshihiro wrote:
>>
>> Sorry I forgot that the SH7724 has SCIF and SCIFA.
>> The ecovec uses SCIF, and it doesn't have SCSPTR.
> 
> Well, one thing that you can do is test for the SCSPTR existence and
> simply not care about the port type. This is roughly what the generic
> sci_init_pins() does for example.
> 
> You would have to ensure that the bits you are twiddling also exist for
> the SCIx_SH2_SCIF_FIFODATA_REGTYPE, SCIx_SH2_SCIF_FIFODATA_REGTYPE, and
> SCIx_SH4_SCIF_FIFODATA_REGTYPE, though.

Thank you for the suggestion. I will modify the code.

>> I checked the ecovec schematics, but it cannot use SCIFA because
>> other functions use the multiplex pins.
>>
> You should be able to plug them in for the port and let the sh-sci driver
> try to grab the port. The port will simply be skipped if pin demux fails.
> Take a look at 50f0959ad4f9ac1c5ee208bb820de299a1b3730b for an idea of
> how to wire it up.
> 

I'm sorry, I don't understand this comment.
I think that if the sh-sci driver grab the port, other driver cannot
work correctly when other driver is working.

Best regards,
Yoshihiro Shimoda