Re: [PATCH v2 18/18] auxdisplay: ht16k33: Add segment display LED support

[Geert Uytterhoeven]

Hi Marek,

On Fri, Jun 25, 2021 at 10:40 PM Marek Behun <marek.behun@xxxxxx> wrote:
> On Fri, 25 Jun 2021 22:39:16 +0200
> Marek Behun <marek.behun@xxxxxx> wrote:
> > On Fri, 25 Jun 2021 14:59:02 +0200
> > Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> > > Instantiate a single LED for a segment display.  This allows the user to
> > > control display brightness and blinking through the LED class API and
> > > triggers, and exposes the display color.
> > > The LED will be named "auxdisplay:<color>:backlight".
> >
> > What if there are multiple "auxdisplay"s ?
> > Doesn't this subsystem have IDs? So that you can use auxdisplayN for
> > device name, for example?
>
> Or if this driver creates a fbdev, maybe "fb<N>" for devicename?

This LED device is only registered when using the HT16K33 to drive
segment displays.
When driving a dot matrix display, the driver still use fbdev and
devm_backlight_device_register(), for backwards compatibility.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds