On Mon, Feb 12, 2024 at 12:25:48PM +0100, Krzysztof Kozlowski wrote: > > Hm, I don't understand how exactly it helps. The GPIO expander has its > own example and as you pointed below, this is basically the same code, > except rw and backlight GPIOs. The hd44780 is a display that is very often used. By people (like me some time ago) not familiar with the nice io expander implementation in Linux. The consequence of that is that you'll find several out-of-tree implementations for this display with i2c out in the wild. So my thought of documenting this (again) at that location is to make it easier for people with a hd44780 with the standard i2c interface to see how it is done in Linux. So I really think it helps. It would have helped me :-) Ralf -- Dr. Ralf Schlatterbeck Tel: +43/2243/26465-16 Open Source Consulting www: www.runtux.com Reichergasse 131, A-3411 Weidling email: office@xxxxxxxxxx
