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Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file

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Hi Andy, Alan

Andy Shevchenko 於 2016/1/19 下午 09:21 寫道:
>> Your device is multi-function. Create an MFD driver for it. Make the
>> 8250 driver bind to the MFD, and provide your own baud rate methods
>> within the standard 8250 layer
>
> Ouch, somehow I missed this one!
>
> Peter, Alan's suggestion is really worth to try.
>

Thanks for point this. It seems good to probe on MFD driver, them MFD
register platform devices to invoke platform driver to initialize
sub-parts. I'll try to survey first.

But I had a new question, If I really do it with MFD subsystem, it'll
split into 3 parts, MFD probe(driver/mfd) / GPIO (driver/gpio) / UART
(drivers/tty/serial/8250). It'll cross more than 2 subsystems and 
maintainers How should I do to organize the patches?

For examples, I should remove the probe function in 8250_pci.c and
move it to new MFD file. It should organize it in the same patch as Paul
said, but this patch will need 2 subsystem maintainer to do with the
same patch, it seems weird.

Andy had cc "[PATCH v5] serial: 8250: add gpio support to exar" to me,
could I use the same way to do GPIOLIB? First add a platform driver
for F81504 gpio and add platform device into 8250_pci.c? It seems to
be good and simple to implement.

-- 
With Best Regards,
Peter Hung

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Thread

[PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Peter Hung <hpeter@gmail.com> - 2016-01-19 03:50 +0100
  [PATCH 1/3] serial: 8250_pci: Remove Fintek PCIE UART driver Peter Hung <hpeter@gmail.com> - 2016-01-19 03:50 +0100
  Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Paul Gortmaker <paul.gortmaker@windriver.com> - 2016-01-19 05:00 +0100
    Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Peter Hung <hpeter@gmail.com> - 2016-01-19 09:50 +0100
      Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-01-19 10:40 +0100
      Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2016-01-19 13:40 +0100
        Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-01-19 14:30 +0100
          Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Peter Hung <hpeter@gmail.com> - 2016-01-20 04:00 +0100
            Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2016-01-20 07:30 +0100
              Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Peter Hung <hpeter@gmail.com> - 2016-01-20 09:30 +0100
                Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2016-01-22 12:00 +0100
                Re: [PATCH 0/3] 8250: Split Fintek PCIE to UART to independent file Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-01-22 14:50 +0100

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