On Fri, May 13, 2016 at 8:43 PM, Crestez Dan Leonard <leonard.cres...@intel.com> wrote:
> As far as I can tell DRDY for ST sensors behaves as a level rather than > edge interrupt. Registering for IRQF_TRIGGER_RISING instead of > IRQF_TRIGGER_HIGH mostly works except when the sampling frequency is > high enough that new samples come before the new ones are read > completely. In that case the interrupt line remains high, no more rising > edges occur and the iio buffer stalls. > > Configuring the interrupt as IRQF_TRIGGER_HIGH makes it work as > expected. This patch makes it so that st_sensors_trigger interrupt > request code doesn't mangle the request flags into IRQF_TRIGGER_RISING. > > Cc: Linus Walleij <linus.wall...@linaro.org> > Cc: Giuseppe Barba <giuseppe.ba...@st.com> > Cc: Denis Ciocca <denis.cio...@st.com> > Signed-off-by: Crestez Dan Leonard <leonard.cres...@intel.com> > --- > This is an alternative fix to this patch: > https://www.spinics.net/lists/linux-iio/msg24722.html > [PATCH 2/2 v6] iio: st_sensors: read surplus samples in trigger. I have incorporated this approach into my patch now: please give it a spin! Yours, Linus Walleij
