[PATCH 5/6] gpio: Add new gpio-macsmc driver for Apple Macs

[Martin Povišer]

> On 5. 9. 2022, at 17:32, Russell King (Oracle) <linux at armlinux.org.uk> wrote:

> I still need a resolution between you and Hector over the smc_key
> issue - specifically, do I pick up the patch that adds support for
> %p4ch, or do we re-architect the smc_key thing and also in doing so
> get rid of the need for your "endian conversion" thing.

Idea about the %p4ch thing: We will leave the keys true
to their nature (i.e. 32-bit integer), and at least initially
for the prints we will employ macros

#define SMC_KEYFMT “%c%c%c%c”
#define SMC_KEYFMT_VAL(val) (val)>>24,(val)>>16,(val)>>8,(val)

used like

printk(“blah blah” SMC_KEYFMT “ blah\n”, SMC_KEYFMT_VAL(key));

This has the nice property that it is pretty much like the specifier,
and later can be easily replaced with the real thing.

--
Martin