| Message ID | 44807977-8b46-4678-b8e5-440ff8208062@rwthex-w2-a.rwth-ad.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, 8 Dec 2017 18:41:49 +0100 Stefan Brüns <stefan.bruens@rwth-aachen.de> wrote: > The conversion time can be up to 16 seconds (8 ms per channel, 2 channels, > 1024 times averaging). > > Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Applied > --- > > drivers/iio/adc/ina2xx-adc.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c > index b027d485398b..2621a34ee5c6 100644 > --- a/drivers/iio/adc/ina2xx-adc.c > +++ b/drivers/iio/adc/ina2xx-adc.c > @@ -764,7 +764,7 @@ static int ina2xx_capture_thread(void *data) > struct iio_dev *indio_dev = data; > struct ina2xx_chip_info *chip = iio_priv(indio_dev); > int sampling_us = SAMPLING_PERIOD(chip); > - int buffer_us; > + int buffer_us, delay_us; > > /* > * Poll a bit faster than the chip internal Fs, in case > @@ -778,8 +778,10 @@ static int ina2xx_capture_thread(void *data) > if (buffer_us < 0) > return buffer_us; > > - if (sampling_us > buffer_us) > - udelay(sampling_us - buffer_us); > + if (sampling_us > buffer_us) { > + delay_us = sampling_us - buffer_us; > + usleep_range(delay_us, (delay_us * 3) >> 1); > + } > > } while (!kthread_should_stop()); > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c index b027d485398b..2621a34ee5c6 100644 --- a/drivers/iio/adc/ina2xx-adc.c +++ b/drivers/iio/adc/ina2xx-adc.c @@ -764,7 +764,7 @@ static int ina2xx_capture_thread(void *data) struct iio_dev *indio_dev = data; struct ina2xx_chip_info *chip = iio_priv(indio_dev); int sampling_us = SAMPLING_PERIOD(chip); - int buffer_us; + int buffer_us, delay_us; /* * Poll a bit faster than the chip internal Fs, in case @@ -778,8 +778,10 @@ static int ina2xx_capture_thread(void *data) if (buffer_us < 0) return buffer_us; - if (sampling_us > buffer_us) - udelay(sampling_us - buffer_us); + if (sampling_us > buffer_us) { + delay_us = sampling_us - buffer_us; + usleep_range(delay_us, (delay_us * 3) >> 1); + } } while (!kthread_should_stop());
The conversion time can be up to 16 seconds (8 ms per channel, 2 channels, 1024 times averaging). Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> --- drivers/iio/adc/ina2xx-adc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)