On Tue, Apr 28, 2015 at 11:04:09AM -0300, Ezequiel Garcia wrote:
> On 04/27/2015 10:21 PM, Michael Welling wrote:
> > On Mon, Apr 27, 2015 at 08:55:50PM +0100, Mark Brown wrote:
> >> On Sun, Apr 26, 2015 at 10:44:30PM -0500, Michael Welling wrote:
> >>
> >>> + if (gpio_is_valid(spi->cs_gpio)) {
> >>> + gpio_set_value(spi->cs_gpio, (cs_active) ?
> >>> + !!(spi->mode & SPI_CS_HIGH) :
> >>> + !(spi->mode & SPI_CS_HIGH));
> >>> + }
> >>
> >> Two problems here. One is that the above logic statement is just not
> >> readable (the repitition of hecks, the ternery operator, the
> >> indentation...) and the other is that the core chipselect support
> >> already handles GPIO chipselects so you should really be converting the
> >> driver to use that. At the very least the code needs to be legible
> >> though.
> >
> > Before I send another patch how does this look?
> >
> > if (gpio_is_valid(spi->cs_gpio)) {
> > if (cs_active)
> > gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH);
> > else
> > gpio_set_value(spi->cs_gpio, !(spi->mode &
> > SPI_CS_HIGH));
> > }
> >
> > If I were to attempt to convert the driver to use the core chipselect
> > support,
> > how would I go about doing it?
> >
> > Is there another driver that I can use for reference?
>
> We've recently done that for spi-img-spfi.c.
>
Okay, thanks for pointing that out.
> --
> Ezequiel
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