Re: [PATCH 1/1] net: dsa: rtl8366rb: standardize init jam tables

[Vladimir Oltean]

On Wed, Jan 27, 2021 at 12:28:05AM +0200, Vladimir Oltean wrote:
> > So, allow me to explain. The kernel jams every "i + 1" value in the array
> > tables into the registers at " i", and then increments "i" by 2.
> > These can be seen as [n][2] matrixes, just like the ethernet one.
> > Having the arrays converted to matrixes can help visualize which
> > value is jammed where, or at least that's how I feel like it is.
> > I know it's not a big change...
> 
> Got it, thanks. It is better, in fact, once you get over that whole
> 0xBE00 thing...

If you really want beautiful code, I guess you could create a structure
with two fields:

struct rtl8366rb_jam_table_entry {
	u16 addr;
	u16 val;
};

and then convert those ugly looking matrix definitions:
u16 (*jam_table)[2]
with:
struct rtl8366rb_jam_table_entry *jam_table

and this:
		ret = regmap_write(smi->map,
				   jam_table[i][0],
				   jam_table[i][1]);
with this:
		ret = regmap_write(smi->map,
				   jam_table[i].addr,
				   jam_table[i].val);

The memory footprint would be exactly the same, and the struct
initializers would look exactly the same as your current array
declarations.