Re: [PATCH linux-next v4 5/5] mtd: atmel-quadspi: add driver for Atmel QSPI controller

Marek Vasut
2015-08-25T10:22:22Z

On Tuesday, August 25, 2015 at 12:17:37 PM, Cyrille Pitchen wrote:
> Hi Marek,

Hi!

> Le 24/08/2015 13:03, Marek Vasut a écrit :
> > On Monday, August 24, 2015 at 12:14:00 PM, Cyrille Pitchen wrote:
> >> This driver add support to the new Atmel QSPI controller embedded into
> >> sama5d2x SoCs. It expects a NOR memory to be connected to the QSPI
> >> controller.
> >>
> >> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
> >> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
> >
> > Hi,
> >
> > [...]
> >
> >> +/* Register access macros */
> >
> > These are functions, not macros :)
> >
> > btw is there any reason for these ? I'd say, just put the read*() and
> > write*() functions directly into the code and be done with it, it is
> > much less confusing.
>
> If you don't mind, I'd rather keep some of these inline functions. I have
> no strong justification, it's more a personal taste: it makes lines
> shorter as it avoids the need to add "->regs + ".
> Also it makes the code consistent with other Atmel drivers which already
> use such wrappers.
>
> However I'll fix the comment and remove the byte and word versions, which
> are not used. So only qspi_readl() and qspi_writel() are left.
>
> Does it sound good to you?

In my mind, seeing explicit readl_relaxed() somewhere is much easier to
digest than seeing some wrapper, which I have to look up. But please do
wait for others to voice their concern too, I might not be the best person
to tell you what to do when it comes to wrapping IO accessors ;-)

Best regards,
Marek Vasut