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? -- Lee Jones [李琼斯]
