From bc2b7dab629a51e8beb5fda4222c62a23b729f26 Mon Sep 17 00:00:00 2001 From: Gregor Boirie Date: Wed, 9 Mar 2016 19:05:49 +0100 Subject: iio:core: timestamping clock selection support Adds a new per-device sysfs attribute "current_timestamp_clock" to allow userspace to select a particular POSIX clock for buffered samples and events timestamping. Following clocks, as listed in clock_gettime(2), are supported: CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW, CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and CLOCK_TAI. Signed-off-by: Gregor Boirie Acked-by: Sanchayan Maity Signed-off-by: Jonathan Cameron --- Documentation/ABI/testing/sysfs-bus-iio | 7 +++++++ Documentation/DocBook/iio.tmpl | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index e7f590c6ef8e..fee35c00cc4e 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -32,6 +32,13 @@ Description: Description of the physical chip / device for device X. Typically a part number. +What: /sys/bus/iio/devices/iio:deviceX/timestamp_clock +KernelVersion: 4.5 +Contact: linux-iio@vger.kernel.org +Description: + String identifying current posix clock used to timestamp + buffered samples and events for device X. + What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency What: /sys/bus/iio/devices/triggerX/sampling_frequency diff --git a/Documentation/DocBook/iio.tmpl b/Documentation/DocBook/iio.tmpl index f525bf56d1dd..e2ab6a1f223e 100644 --- a/Documentation/DocBook/iio.tmpl +++ b/Documentation/DocBook/iio.tmpl @@ -594,7 +594,7 @@ irqreturn_t sensor_iio_pollfunc(int irq, void *p) { - pf->timestamp = iio_get_time_ns(); + pf->timestamp = iio_get_time_ns((struct indio_dev *)p); return IRQ_WAKE_THREAD; } -- cgit v1.2.3