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2ca45e57ea
Add support for GPIO-based charlieplex keypad, allowing to control N^2-N keys using N GPIO lines. Reuse matrix keypad keymap to simplify, even if there is no concept of rows and columns in this type of keyboard. Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com> Link: https://patch.msgid.link/20260312180304.3865850-5-hugo@hugovil.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>