[PATCH v2 5/7] mmc: sdhci: consolidate sdhci-of-esdhc and sdhci-esdhc-imx

[Uwe Kleine-König]

Hello Shawn,

> > > +#ifndef CONFIG_MMC_SDHCI_ESDHC_IMX
> > > +#define cpu_is_mx25()	(0)
> > > +#define cpu_is_mx35()	(0)
> > > +#define cpu_is_mx51()	(0)
> > > +#define cpu_is_imx()	(0)
> > > +#else
> > > +#define cpu_is_imx()	(1)
> > > +#endif
> > 
> > ... e.g. that looks a bit frightening.
> > 
> Agree.
> 
> The use of cpu_is_mx..() in the driver itself seems a churn to me
> even without this consolidation patch.  Is it possible for us to
> eliminate them by using pdata, and eventually device tree?  When we
> are there, I might want to revisit the consolidation again.
An alternative that allows letting the logic in the driver and still
getting rid of the cpu_is_ stuff is using platform ids. See
drivers/spi/spi_imx.c for an example. Instead of an index into an array
(as it's for the imx-spi driver) driver_data can hold flags, too, which
should be enough most of the time.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |