[U-Boot] [PATCH V2 1/2] GPIO: Tegra2: add GPIO driver for Tegra2

[Wolfgang Denk]

Dear Tom Warren,

In message <BANLkTi=Z7Tb7s1ghjkieRz812EOyM8ttJA at mail.gmail.com> you wrote:
>
> >> Let me double-check. IIRC, one (cmd_gpio) didn't apply since it was
> >> from another SoC and didn't have the commands we use on Tegra, and the
> >> other (where the driver should go) ended with Mike saying "i'm not
> >> sure sweating the location of the driver is important", so I've left
> >> it with the other GPIO drivers.
> >
> > What I'm referring to is the "lots of duplicated code" part.
> Actually, if you do a kompare between cmd_gpio.c and tegra2_gpio.c,
> there's virtually no 'duplicated' code, just 2 different
> implementations of do_gpio, with different args and parsing of params,
> etc.  I use info, port, input and output, and cmd_gpio uses input,
> set, clear and toggle.  Since cmd_gpio.c isn't built, it's not
> duplicating any code in the U-Boot binary, space-wise.  So there's no
> advantage to using it instead of my own driver's cmd parser.

There is duplication (at least function-wise) in the U-Boot source
code base.  This is to be avoided.

Best regards,

Wolfgang Denk

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