iio: core: drop iio_get_time_res()

This function was introduced with the ability to pick a clock.
There are no upstream users so presumably it isn't as obviously useful
as it seemed at the time.  Hence drop it.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20220220163327.424696-1-jic23@kernel.org

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 7517deec501e92ae1636bf86ec20135c902faa3b..dd42df854a576f3987df603d75e7e1f72c6e71af 100644 (file)
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -334,29 +334,6 @@ s64 iio_get_time_ns(const struct iio_dev *indio_dev)
 }
 EXPORT_SYMBOL(iio_get_time_ns);
 
-/**
- * iio_get_time_res() - utility function to get time stamp clock resolution in
- *                      nano seconds.
- * @indio_dev: device
- */
-unsigned int iio_get_time_res(const struct iio_dev *indio_dev)
-{
-       switch (iio_device_get_clock(indio_dev)) {
-       case CLOCK_REALTIME:
-       case CLOCK_MONOTONIC:
-       case CLOCK_MONOTONIC_RAW:
-       case CLOCK_BOOTTIME:
-       case CLOCK_TAI:
-               return hrtimer_resolution;
-       case CLOCK_REALTIME_COARSE:
-       case CLOCK_MONOTONIC_COARSE:
-               return LOW_RES_NSEC;
-       default:
-               BUG();
-       }
-}
-EXPORT_SYMBOL(iio_get_time_res);
-
 static int __init iio_init(void)
 {
        int ret;

diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 233d2e6b772119e5b9f695698e5667d894ecd2ca..f6ea2ed99457020d8be1f4bfa5658a8b9487c311 100644 (file)
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -313,7 +313,6 @@ static inline bool iio_channel_has_available(const struct iio_chan_spec *chan,
 }
 
 s64 iio_get_time_ns(const struct iio_dev *indio_dev);
-unsigned int iio_get_time_res(const struct iio_dev *indio_dev);
 
 /*
  * Device operating modes