Re: Kmod driver at iicbus. attach() and config_intrhook(9)
Andriy Gapon <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
On 27/08/2020 00:33, John-Mark Gurney wrote: > Andriy Gapon wrote this message on Wed, Aug 26, 2020 at 23:55 +0300: >> On 25/08/2020 23:33, John-Mark Gurney wrote: >>> Andriy Gapon wrote this message on Tue, Aug 25, 2020 at 10:21 +0300: >>>> On 24/08/2020 23:47, John-Mark Gurney wrote: >>>>> What driver is used for i2c on the Orange? I've tried to firgure it >>>>> out from dts + source, but it isn't clear. >>>> >>>> a10_twsi >>> >>> Thanks. And this explains why I couldn't find it in arm/allwinner.. :) >>> >>> Yeah, this is using bus_generic_attach... >>> >>> But it looks like it supports interruptless operation. Is there a flag >>> for when interrupts are enabled? >>> >>> Because the check in sys/dev/iicbus/twsi/twsi.c:twsi_transfer could be >>> changed from: >>> if (sc->have_intr == false) >>> >>> to: >>> if (sc->have_intr == false || interrupts_not_enabled) >>> >>> And that could fix things. >>> >> >> sc->have_intr is already enabled from the interrupt enable hook. > > But that only detects if the interrupt are used, NOT that they are > currently active and working which the "|| cold" would provide... The interrupt hook is called after interrupts are enabled and usable. Specifically, I mean config_intrhook_oneshot(). -- Andriy Gapon _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-arm To unsubscribe, send any mail to "[email protected]"