On Tue, Sep 26, 2023 at 02:11:14PM +0300, Andy Shevchenko wrote: > On Tue, Sep 26, 2023 at 06:41:00PM +0800, Kent Gibson wrote: > > On Tue, Sep 26, 2023 at 08:20:06AM +0300, Andy Shevchenko wrote: > > > We have sparse and dence masks of the line mappings based on > > > > dense > > > > > the view point (Linux numbering or hardware numbering). Since > > > the Linux side uses sequential bits for the mask, we can simply > > > convert a Linux number to the hardware one and vise versa by > > > > vice > > > > > counting set bits in the respective mask. Hence replace > > > bitmap_bitremap() calls by simpler equivalents. > > > > > > With this done the dence mask is not needed and thus dropped. > > > > And dense again. > > Thank you, Kent, I really appreciate your help with my poor English, > nevertheless it would be nice if you can look at the last patch and > maybe even test it, so we have a bit of confidence that it works > as expected. > Well that is the plan, but I haven't been in the GPIO space for a while so I need to pull my test setup out of mothballs first - so don't hold your breath. > (The spelling will be fixed in the next version.) > Those I can spot without needing to compile anything ;-). Cheers, Kent.