On Wed, Sep 24, 2014 at 2:40 PM, Sascha Hauer <[email protected]> wrote: > On Wed, Sep 24, 2014 at 01:23:09PM +0200, Linus Walleij wrote:
>> I haven't got to reviewing the driver, but this looks just wrong. >> >> Have the magic numbers in the driver. >> >> Use strings to describe functions, not integers. > > Interrupts, clocks, gpios, dma channels, nearly everything in the device tree > is > arbitrarily numbered. Instead of "irq-i2c0" we have <0 36 IRQ_TYPE_LEVEL_HIGH> > in the device tree. These numbers can be resolved efficiently in the > driver by shifting them to get a bitmask or by adding them as offset to > a register base. > Why do you want to make pinctrl different? Because pin control is about combining groups of pins with certain functions. > Thanks to the recently > introduced defines in the device trees these numbers are not magic at > all anymore. Yeah that is good but not what I'm after here. >> We need to move toward standardized device tree bindings >> for this stuff, and that means using strings, not magic >> numbers. > > Agreed for standardized device tree bindings, but not for using strings. What is the alternative? Device Tree is very much about strings, as is shown by the pin config bindings. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
