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SubjectRe: [PATCH v4 06/11] i2c: designware: Add Baytrail sem config DW I2C platform dependency
On Wed, May 27, 2020 at 06:46:32PM +0300, Andy Shevchenko wrote:
> On Wed, May 27, 2020 at 05:24:06PM +0300, Serge Semin wrote:
> > On Wed, May 27, 2020 at 04:42:20PM +0300, Andy Shevchenko wrote:
> > > On Wed, May 27, 2020 at 03:01:06PM +0300, Serge Semin wrote:
> > > > Currently Intel Baytrail I2C semaphore is a feature of the DW APB I2C
> > > > platform driver. It's a bit confusing to see it's config in the menu at
> > > > some separated place with no reference to the platform code. Let's move the
> > > > config definition to be below the I2C_DESIGNWARE_PLATFORM config and mark
> > > > it with "depends on I2C_DESIGNWARE_PLATFORM" statement. By doing so the
> > > > config menu will display the feature right below the DW I2C platform
> > > > driver item and will indent it to the right so signifying its belonging.
>
> ...
>
> > > > config I2C_DESIGNWARE_BAYTRAIL
> > > > bool "Intel Baytrail I2C semaphore support"
> > > > depends on ACPI
> > > > + depends on I2C_DESIGNWARE_PLATFORM
> > > > depends on (I2C_DESIGNWARE_PLATFORM=m && IOSF_MBI) || \
> > > > (I2C_DESIGNWARE_PLATFORM=y && IOSF_MBI=y)
> > >
> > > I didn't get this. What is broken now with existing dependencies?
> >
> > With no explicit "depends on I2C_DESIGNWARE_PLATFORM" the entry isn't right
> > shifted with respect to the I2C_DESIGNWARE_PLATFORM config entry in the kernel
> > menuconfig. So it looks like a normal no-yes driver without it.
>
> I didn't get. Is there problems with current case? (I don't see it).
> If there is a problem, it should have a separate patch and commit message.
>
> As for now above excerpt seems redundant and unneeded churn.

Please read the commit log more carefully.

Without explicit "depends on I2C_DESIGNWARE_PLATFORM" you'd see the DW
I2C-related menuconfig as:
[*] Synopsys DesignWare Platform
[ ] Intel Baytrail I2C semaphore support
with that "depends on I2C_DESIGNWARE_PLATFORM" added:
[*] Synopsys DesignWare Platform
[ ] Intel Baytrail I2C semaphore support
The second case presents the Baytrail semaphore as the DW I2C platform
feature. Otherwise it's just a simple menuentry. As I see it without adding
the explicit "depends on I2C_DESIGNWARE_PLATFORM" there is no need in moving
the config at all. So if you think it's a churn. Well, I'll wait for
Jarkko' comment in this regard.

BTW Jarkko asked in v3 whether it would work with just explicit "depends on"
without if-endif enclosing the config.

-Sergey

>
> --
> With Best Regards,
> Andy Shevchenko
>
>

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