Re: [PATCH 0/5] can: enable multi-queue for SocketCAN devices

[Jonas Mark (BT-FIR/ENG1)]

Hi Oliver,

> >> Please place the companion driver in
> >>
> >> drivers/net/can/spi/companion.c
> >>
> >> It also makes more sense in the Kconfig structure.
> >>
> >> Probably this naming scheme also makes sense for
> >>
> >> linux/drivers/char/spi/companion.c
> >>
> >> then ...
> >>
> >> If not it should be named at least
> >>
> >> drivers/char/companion-spi.c
> >>
> >> or
> >>
> >> drivers/char/spi-companion.c
> >
> > We intentionally left out the spi in the driver path / name because
> > only the drivers/spi/companion/* driver knows that that it is connected
> > to SPI. The others (drivers/net/can/companion-can.c and
> > drivers/char/companion-char.c) only know the API. This could also be
> > supplied by a driver which talks to the Companion via a different
> > interface. Actually, we started with a UART connection but switched to
> > SPI due to latency issues.
> 
> Ok, got it.
> 
> > Should we still change it?
> 
> At least I would then vote for
> 
> drivers/char/companion.c
> drivers/net/can/companion.c
> 
> instead of
> 
> drivers/char/companion-char.c
> drivers/net/can/companion-can.c

Sounds good, will be changed.

> as you would have companion-users in different driver subsystems that
> are already clearly referenced by their path.
> 
> The modules itself should still be named with companion-can of course
> (as-is right now).
> 
> Btw.
> 
> +#define DRIVER_NAME     "bosch,companion-can"
> 
> +static const struct can_bittiming_const companion_can_bittiming_const = {
> +	.name      = "bosch,companion",
> 
> 
> Is there any reason why it's not only "companion-can" or "companion"?
> The fact that the driver is provided by Bosch is visible in the source code.

Hmm, I guess we mixed up the naming scheme used in devicetree. We will
sleep a night over it and then clean it up. I think the result will be
that the devicetree entry is "bosch,companion-can" and all other uses
are "companion-can".

Greetings,
Mark

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