Linus Walleij <linus.walleij@xxxxxxxxxx> writes: > On Wed, Jun 1, 2016 at 11:43 PM, Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote: > >> +#define FXL6408_OUTPUT 0x05 >> +/* Bits here make the output High-Z, instead of the OUTPUT value. */ >> +#define FXL6408_OUTPUT_HIGH_Z 0x07 > (...) >> + /* Disable High-Z of outputs, so that our OUTPUT updates >> + * actually take effect. >> + */ >> + i2c_smbus_write_byte_data(client, FXL6408_OUTPUT_HIGH_Z, 0); > > High-Z is probably the same as open drain right? And if not open drain, > it is push-pull. > > So you want to implement .set_single_ended() for configuring the lines in > "high-z", i.e. open drain output mode. I'll keep this in mind for whenever I end up writing my next GPIO driver, but this one is dead for now (not actually usable because of the closed firmware).
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