On 01/07/2019 19:16, Poul-Henning Kamp wrote: > -------- > In message <a3538c10-2438-a287-77db-ad390078b...@freebsd.org>, Andriy Gapon > writes: > >> iicbb driver has a hardcoded timeout that defines how long the driver waits >> for >> SCL line to go high after the driver releases it to float. Sometimes slaves >> hold the line low until they are ready to continue with the communication. >> As a side note, the timeout means that the driver just goes on as if the line >> became high. Maybe it should produce an error instead. >> >> Anyway, I would like to increase the current timeout of 100 x 10us to 1000 x >> 10us. The rationale is that there are many slave devices, like sensors, that >> take about 10 ms to return a result. So, I think that it makes sense to play >> nice with such devices by default. >> >> Probably I'll add a sysctl for that parameter while I'll be there. > > sysctl or ioctl ?
An ioctl that could set the value per slave sounds like a very good idea. But it's a little bit more work than I planned for now, so it's a sysctl to set the default global value. -- Andriy Gapon _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
