Hi Lee, On 20/02/24 04:13, Lee Jones wrote: > On Sun, 11 Feb 2024, Chris Packham wrote: > >> Hi Blinkenlight enthusiasts, >> >> I'm looking for something that I figured must exists but maybe it's so >> niche that no-one has bothered to upstream a driver for it. >> >> I have a requirement to support a 7-segment LED display[1] (one that can >> display a single digit from 0-9). Hardware wise it's just a bunch of >> individual GPIOs connected to each segment (plus an extra one for a >> dot). I can't see anything obvious in drivers/leds but maybe I'm looking >> in the wrong place. Or maybe it's the kind of thing on PC hardware that >> is just driven by the BIOS without the operating system knowing about it. >> >> Is there an existing in-kernel driver for such a thing? > Why would LEDs connected to a bunch of GPIOs in a specific fashion > require a hardware driver? Doesn't drivers/leds/leds-gpio.c already > provide all the support you need? Yes I could expose the individual segments as gpio-ledsbut it would be nicer if they worked in a more co-ordinated fashion so I didn't have to care about the individual segments and could just say "display 7" or "display 0".
