Messages in this thread | | | Date | Thu, 18 Mar 2021 13:40:58 +0100 (CET) | From | Alexander Dahl <> | Subject | Re: [PATCH v2 2/4] leds: simatic-ipc-leds: add new driver for Siemens Industial PCs |
| |
Hei hei,
> Enrico Weigelt, metux IT consult <lkml@metux.net> hat am 18.03.2021 11:27 geschrieben: > > > On 15.03.21 11:48, Andy Shevchenko wrote: > > Hi, > > > I have a question, why we can't provide a GPIO driver which is already > > in the kernel and, with use of the patch series I sent, to convert > > this all magic to GPIO LEDs as it's done for all normal cases? > > Do we alread have a generic led driver that for cases that just > set/clear bits in some mem/io location ? If not, that would be really > great to have.
Yes, there is. Look out for compatible "register-bit-led" in device tree. That's from driver in drivers/leds/leds-syscon.c and you can use it inside a syscon node in dts.
It assumes one bit per LED.
Greets Alex
| |