* [PATCH v5 0/2] iio:core: introduce timestamping clock selection
@ 2016-03-09 18:03 Gregor Boirie
2016-03-09 18:05 ` [PATCH v5 1/2] timekeeping: export get_monotonic_coarse64 symbol Gregor Boirie
2016-03-09 18:05 ` [PATCH v5 2/2] iio:core: timestamping clock selection support Gregor Boirie
0 siblings, 2 replies; 5+ messages in thread
From: Gregor Boirie @ 2016-03-09 18:03 UTC (permalink / raw)
To: linux-iio
Cc: Jonathan Cameron, Thomas Gleixner, Hartmut Knaack,
Lars-Peter Clausen, Peter Meerwald, Daniel Baluta,
Haneen Mohammed, Matt Ranostay, Irina Tirdea, Darshana Padmadas,
Martin Fuzzey, Octavian Purdila, Vladimir Barinov, Crt Mori,
Masanari Iida, Harald Geyer, Michael Hennerich, Michal Simek,
Sören Brinkmann, Kevin Tsai, Cristina Opriceana,
Krzysztof Kozlowski, Markus Pargmann, Srinivas Pandruvada,
Bastien Nocera, Antonio Ospite, Vlad Dogaru, Ana Calinov,
Adriana Reus, Joachim Eastwood, Martin Kepplinger,
Christoph Muellner, Roberta Dobrescu, Mika Westerberg,
Naidu Tellapati, Ezequiel Garcia, Marc Titinger, Fugang Duan,
Stefan Agner, Sanchayan Maity, kbuild test robot,
Bhuvanchandra DV, Lars Svensson, Vladimirs Ambrosovs, Alan,
Lucas De Marchi, Viorel Suman, Gabriele Mazzotta, Martin Liska,
Javier Martinez Canillas, Bjorn Andersson,
Kuppuswamy Sathyanarayanan, Markus Elfring, Alexander Koch,
Michael Hornung, Felipe Balbi, Andreas Dannenberg,
Tiberiu Breana, Dan Carpenter, Cristina Moraru, Marek Belisko,
Yong Li, Tomasz Duszynski, Geert Uytterhoeven, Ioana Ciornei,
Janani Ravichandran, Andrew F. Davis, Tina Johnson, Nizam Haider,
Shivani Bhardwaj, Gregor Boirie
This version is aimed at all authors/reviewers/<put your title here> of IIO
drivers this patch modifies.
I'm sorry to bother you guys but I just want to ensure that no harmfull disaster
will happen. Please, feel free to ring my bell in case of unforseen/unexpected
behavior.
IIO timestamping clock selection support based on the following principles :
* selected timestamping clock is a per-device attribute which the userspace
may access through a sysfs file ;
* a single reference clock is used for both buffered samples and events of a
given device at the same time ;
* userspace may choose amongst the following subset of available POSIX clocks:
CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW, CLOCK_REALTIME_COARSE,
CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and CLOCK_TAI ;
* sample and event timestamps consistency with respect to clock changes is
ensured by rejecting the ability to select a new clock as long as an events
chrdev is opened or a buffered samples channel is enabled for a given device.
* no in-kernel API support since :
* consumers work synchronously in direct mode, i.e. timestamping may be
peformed using traditional kernel time keeping ;
* any given device can only feed a single timestamping channel to all
consumers.
Changes since v1:
* isolate clock setup from sysfs
* rename timestamping clock sysfs entry to "timestamp_clock"
* make the "timestamp_clock" file content a self-describing string
* merge all 3 patches into a single one
* cosmetics
* rebase onto IIO testing branch
Changes since v2:
* rename timestamping clock sysfs entry to "current_timestamp_clock" to allow a
futur refinement exposing available clocks through a
"timestamp_clock_available" sysfs entry
* rename clock ids (remove "CLOCK_" prefix + lower case)
* checkpatch'ed
* rebase onto IIO testing branch
Changes since v3:
* rebase onto IIO testing branch
* leave dht11 driver untouched as timestamping is used for internal purpose
only
Changes since v4:
* export get_monotonic_coarse64 symbol
Gregor.
Gregor Boirie (2):
timekeeping: export get_monotonic_coarse64 symbol
iio:core: timestamping clock selection support
Documentation/ABI/testing/sysfs-bus-iio | 7 +
Documentation/DocBook/iio.tmpl | 2 +-
drivers/iio/accel/bma180.c | 2 +-
drivers/iio/accel/bmc150-accel-core.c | 4 +-
drivers/iio/accel/kxcjk-1013.c | 2 +-
drivers/iio/accel/mma7455_core.c | 3 +-
drivers/iio/accel/mma8452.c | 4 +-
drivers/iio/accel/mma9551.c | 2 +-
drivers/iio/accel/mma9553.c | 2 +-
drivers/iio/adc/ad7291.c | 2 +-
drivers/iio/adc/ad7298.c | 2 +-
drivers/iio/adc/ad7476.c | 2 +-
drivers/iio/adc/ad7887.c | 2 +-
drivers/iio/adc/ad7923.c | 2 +-
drivers/iio/adc/ad799x.c | 4 +-
drivers/iio/adc/cc10001_adc.c | 2 +-
drivers/iio/adc/hi8435.c | 2 +-
drivers/iio/adc/ina2xx-adc.c | 6 +-
drivers/iio/adc/max1363.c | 5 +-
drivers/iio/adc/ti-ads1015.c | 3 +-
drivers/iio/adc/vf610_adc.c | 3 +-
drivers/iio/adc/xilinx-xadc-events.c | 4 +-
drivers/iio/chemical/atlas-ph-sensor.c | 2 +-
drivers/iio/dac/ad5421.c | 6 +-
drivers/iio/dac/ad5504.c | 2 +-
drivers/iio/dummy/iio_simple_dummy_buffer.c | 3 +-
drivers/iio/dummy/iio_simple_dummy_events.c | 2 +-
drivers/iio/gyro/bmg160_core.c | 30 ++--
drivers/iio/iio_core.h | 3 +
drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 2 +-
drivers/iio/industrialio-core.c | 179 +++++++++++++++++++++-
drivers/iio/industrialio-event.c | 19 ++-
drivers/iio/industrialio-trigger.c | 2 +-
drivers/iio/light/acpi-als.c | 2 +-
drivers/iio/light/adjd_s311.c | 2 +-
drivers/iio/light/apds9300.c | 2 +-
drivers/iio/light/apds9960.c | 4 +-
drivers/iio/light/cm36651.c | 2 +-
drivers/iio/light/gp2ap020a00f.c | 8 +-
drivers/iio/light/isl29125.c | 2 +-
drivers/iio/light/lm3533-als.c | 2 +-
drivers/iio/light/ltr501.c | 7 +-
drivers/iio/light/opt3001.c | 4 +-
drivers/iio/light/stk3310.c | 2 +-
drivers/iio/light/tcs3414.c | 2 +-
drivers/iio/light/tcs3472.c | 2 +-
drivers/iio/light/tsl2563.c | 2 +-
drivers/iio/light/us5182d.c | 2 +-
drivers/iio/magnetometer/hmc5843_core.c | 2 +-
drivers/iio/magnetometer/mag3110.c | 2 +-
drivers/iio/pressure/mpl3115.c | 2 +-
drivers/iio/pressure/ms5611_core.c | 3 +-
drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 2 +-
drivers/iio/proximity/sx9500.c | 4 +-
drivers/staging/iio/accel/lis3l02dq_core.c | 2 +-
drivers/staging/iio/accel/sca3000_core.c | 2 +-
drivers/staging/iio/adc/ad7280a.c | 8 +-
drivers/staging/iio/adc/ad7606_ring.c | 3 +-
drivers/staging/iio/adc/ad7816.c | 3 +-
drivers/staging/iio/addac/adt7316.c | 4 +-
drivers/staging/iio/cdc/ad7150.c | 2 +-
drivers/staging/iio/light/tsl2x7x_core.c | 2 +-
include/linux/iio/iio.h | 22 ++-
kernel/time/timekeeping.c | 1 +
64 files changed, 318 insertions(+), 108 deletions(-)
--
2.1.4
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH v5 1/2] timekeeping: export get_monotonic_coarse64 symbol
2016-03-09 18:03 [PATCH v5 0/2] iio:core: introduce timestamping clock selection Gregor Boirie
@ 2016-03-09 18:05 ` Gregor Boirie
2016-03-09 18:05 ` [PATCH v5 2/2] iio:core: timestamping clock selection support Gregor Boirie
1 sibling, 0 replies; 5+ messages in thread
From: Gregor Boirie @ 2016-03-09 18:05 UTC (permalink / raw)
To: linux-iio
Cc: Jonathan Cameron, Thomas Gleixner, Hartmut Knaack,
Lars-Peter Clausen, Peter Meerwald, Daniel Baluta,
Haneen Mohammed, Matt Ranostay, Irina Tirdea, Darshana Padmadas,
Martin Fuzzey, Octavian Purdila, Vladimir Barinov, Crt Mori,
Masanari Iida, Harald Geyer, Michael Hennerich, Michal Simek,
Sören Brinkmann, Kevin Tsai, Cristina Opriceana,
Krzysztof Kozlowski, Markus Pargmann, Srinivas Pandruvada,
Bastien Nocera, Antonio Ospite, Vlad Dogaru, Ana Calinov,
Adriana Reus, Joachim Eastwood, Martin Kepplinger,
Christoph Muellner, Roberta Dobrescu, Mika Westerberg,
Naidu Tellapati, Ezequiel Garcia, Marc Titinger, Fugang Duan,
Stefan Agner, Sanchayan Maity, kbuild test robot,
Bhuvanchandra DV, Lars Svensson, Vladimirs Ambrosovs, Alan,
Lucas De Marchi, Viorel Suman, Gabriele Mazzotta, Martin Liska,
Javier Martinez Canillas, Bjorn Andersson,
Kuppuswamy Sathyanarayanan, Markus Elfring, Alexander Koch,
Michael Hornung, Felipe Balbi, Andreas Dannenberg,
Tiberiu Breana, Dan Carpenter, Cristina Moraru, Marek Belisko,
Yong Li, Tomasz Duszynski, Geert Uytterhoeven, Ioana Ciornei,
Janani Ravichandran, Andrew F. Davis, Tina Johnson, Nizam Haider,
Shivani Bhardwaj, Gregor Boirie
EXPORT_SYMBOL() get_monotonic_coarse64 for new IIO timestamping clock
selection usage. This provides user apps the ability to request a
particular IIO device to timestamp samples using a monotonic coarse clock
granularity.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
---
kernel/time/timekeeping.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 34b4ced..5a95d41 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1950,6 +1950,7 @@ struct timespec64 get_monotonic_coarse64(void)
return now;
}
+EXPORT_SYMBOL(get_monotonic_coarse64);
/*
* Must hold jiffies_lock
--
2.1.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v5 2/2] iio:core: timestamping clock selection support
2016-03-09 18:03 [PATCH v5 0/2] iio:core: introduce timestamping clock selection Gregor Boirie
2016-03-09 18:05 ` [PATCH v5 1/2] timekeeping: export get_monotonic_coarse64 symbol Gregor Boirie
@ 2016-03-09 18:05 ` Gregor Boirie
2016-03-10 7:06 ` maitysanchayan
1 sibling, 1 reply; 5+ messages in thread
From: Gregor Boirie @ 2016-03-09 18:05 UTC (permalink / raw)
To: linux-iio
Cc: Jonathan Cameron, Thomas Gleixner, Hartmut Knaack,
Lars-Peter Clausen, Peter Meerwald, Daniel Baluta,
Haneen Mohammed, Matt Ranostay, Irina Tirdea, Darshana Padmadas,
Martin Fuzzey, Octavian Purdila, Vladimir Barinov, Crt Mori,
Masanari Iida, Harald Geyer, Michael Hennerich, Michal Simek,
Sören Brinkmann, Kevin Tsai, Cristina Opriceana,
Krzysztof Kozlowski, Markus Pargmann, Srinivas Pandruvada,
Bastien Nocera, Antonio Ospite, Vlad Dogaru, Ana Calinov,
Adriana Reus, Joachim Eastwood, Martin Kepplinger,
Christoph Muellner, Roberta Dobrescu, Mika Westerberg,
Naidu Tellapati, Ezequiel Garcia, Marc Titinger, Fugang Duan,
Stefan Agner, Sanchayan Maity, kbuild test robot,
Bhuvanchandra DV, Lars Svensson, Vladimirs Ambrosovs, Alan,
Lucas De Marchi, Viorel Suman, Gabriele Mazzotta, Martin Liska,
Javier Martinez Canillas, Bjorn Andersson,
Kuppuswamy Sathyanarayanan, Markus Elfring, Alexander Koch,
Michael Hornung, Felipe Balbi, Andreas Dannenberg,
Tiberiu Breana, Dan Carpenter, Cristina Moraru, Marek Belisko,
Yong Li, Tomasz Duszynski, Geert Uytterhoeven, Ioana Ciornei,
Janani Ravichandran, Andrew F. Davis, Tina Johnson, Nizam Haider,
Shivani Bhardwaj, Gregor Boirie
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 <gregor.boirie@parrot.com>
---
Documentation/ABI/testing/sysfs-bus-iio | 7 +
Documentation/DocBook/iio.tmpl | 2 +-
drivers/iio/accel/bma180.c | 2 +-
drivers/iio/accel/bmc150-accel-core.c | 4 +-
drivers/iio/accel/kxcjk-1013.c | 2 +-
drivers/iio/accel/mma7455_core.c | 3 +-
drivers/iio/accel/mma8452.c | 4 +-
drivers/iio/accel/mma9551.c | 2 +-
drivers/iio/accel/mma9553.c | 2 +-
drivers/iio/adc/ad7291.c | 2 +-
drivers/iio/adc/ad7298.c | 2 +-
drivers/iio/adc/ad7476.c | 2 +-
drivers/iio/adc/ad7887.c | 2 +-
drivers/iio/adc/ad7923.c | 2 +-
drivers/iio/adc/ad799x.c | 4 +-
drivers/iio/adc/cc10001_adc.c | 2 +-
drivers/iio/adc/hi8435.c | 2 +-
drivers/iio/adc/ina2xx-adc.c | 6 +-
drivers/iio/adc/max1363.c | 5 +-
drivers/iio/adc/ti-ads1015.c | 3 +-
drivers/iio/adc/vf610_adc.c | 3 +-
drivers/iio/adc/xilinx-xadc-events.c | 4 +-
drivers/iio/chemical/atlas-ph-sensor.c | 2 +-
drivers/iio/dac/ad5421.c | 6 +-
drivers/iio/dac/ad5504.c | 2 +-
drivers/iio/dummy/iio_simple_dummy_buffer.c | 3 +-
drivers/iio/dummy/iio_simple_dummy_events.c | 2 +-
drivers/iio/gyro/bmg160_core.c | 30 ++--
drivers/iio/iio_core.h | 3 +
drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 2 +-
drivers/iio/industrialio-core.c | 179 +++++++++++++++++++++-
drivers/iio/industrialio-event.c | 19 ++-
drivers/iio/industrialio-trigger.c | 2 +-
drivers/iio/light/acpi-als.c | 2 +-
drivers/iio/light/adjd_s311.c | 2 +-
drivers/iio/light/apds9300.c | 2 +-
drivers/iio/light/apds9960.c | 4 +-
drivers/iio/light/cm36651.c | 2 +-
drivers/iio/light/gp2ap020a00f.c | 8 +-
drivers/iio/light/isl29125.c | 2 +-
drivers/iio/light/lm3533-als.c | 2 +-
drivers/iio/light/ltr501.c | 7 +-
drivers/iio/light/opt3001.c | 4 +-
drivers/iio/light/stk3310.c | 2 +-
drivers/iio/light/tcs3414.c | 2 +-
drivers/iio/light/tcs3472.c | 2 +-
drivers/iio/light/tsl2563.c | 2 +-
drivers/iio/light/us5182d.c | 2 +-
drivers/iio/magnetometer/hmc5843_core.c | 2 +-
drivers/iio/magnetometer/mag3110.c | 2 +-
drivers/iio/pressure/mpl3115.c | 2 +-
drivers/iio/pressure/ms5611_core.c | 3 +-
drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 2 +-
drivers/iio/proximity/sx9500.c | 4 +-
drivers/staging/iio/accel/lis3l02dq_core.c | 2 +-
drivers/staging/iio/accel/sca3000_core.c | 2 +-
drivers/staging/iio/adc/ad7280a.c | 8 +-
drivers/staging/iio/adc/ad7606_ring.c | 3 +-
drivers/staging/iio/adc/ad7816.c | 3 +-
drivers/staging/iio/addac/adt7316.c | 4 +-
drivers/staging/iio/cdc/ad7150.c | 2 +-
drivers/staging/iio/light/tsl2x7x_core.c | 2 +-
include/linux/iio/iio.h | 22 ++-
63 files changed, 317 insertions(+), 108 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 3c66248..c374b21 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 f525bf5..e2ab6a1 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;
}
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index f04b884..e3f88ba 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -654,7 +654,7 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p)
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct bma180_data *data = iio_priv(indio_dev);
- int64_t time_ns = iio_get_time_ns();
+ s64 time_ns = iio_get_time_ns(indio_dev);
int bit, ret, i = 0;
mutex_lock(&data->mutex);
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index c73331f7..0529461 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -892,7 +892,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
*/
if (!irq) {
data->old_timestamp = data->timestamp;
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
}
/*
@@ -1295,7 +1295,7 @@ static irqreturn_t bmc150_accel_irq_handler(int irq, void *private)
int i;
data->old_timestamp = data->timestamp;
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
if (data->triggers[i].enabled) {
diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
index edec1d0..36539a2 100644
--- a/drivers/iio/accel/kxcjk-1013.c
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -1131,7 +1131,7 @@ static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
struct iio_dev *indio_dev = private;
struct kxcjk1013_data *data = iio_priv(indio_dev);
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
if (data->dready_trigger_on)
iio_trigger_poll(data->dready_trig);
diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c
index c633cc2..91e2c04 100644
--- a/drivers/iio/accel/mma7455_core.c
+++ b/drivers/iio/accel/mma7455_core.c
@@ -97,7 +97,8 @@ static irqreturn_t mma7455_trigger_handler(int irq, void *p)
if (ret)
goto done;
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 5ca0d16..b9ca5ad 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -783,7 +783,7 @@ static int mma8452_write_event_config(struct iio_dev *indio_dev,
static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
{
struct mma8452_data *data = iio_priv(indio_dev);
- s64 ts = iio_get_time_ns();
+ s64 ts = iio_get_time_ns(indio_dev);
int src;
src = i2c_smbus_read_byte_data(data->client, data->chip_info->ev_src);
@@ -863,7 +863,7 @@ static irqreturn_t mma8452_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
index d899a4d..bf27044 100644
--- a/drivers/iio/accel/mma9551.c
+++ b/drivers/iio/accel/mma9551.c
@@ -391,7 +391,7 @@ static irqreturn_t mma9551_event_handler(int irq, void *private)
iio_push_event(indio_dev,
IIO_MOD_EVENT_CODE(IIO_INCLI, 0, (mma_axis + 1),
IIO_EV_TYPE_ROC, IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
mutex_unlock(&data->mutex);
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index fa7d362..55b4868 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -1002,7 +1002,7 @@ static irqreturn_t mma9553_irq_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct mma9553_data *data = iio_priv(indio_dev);
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
/*
* Since we only configure the interrupt pin when an
* event is enabled, we are sure we have at least
diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
index c0eabf1..0376309 100644
--- a/drivers/iio/adc/ad7291.c
+++ b/drivers/iio/adc/ad7291.c
@@ -115,7 +115,7 @@ static irqreturn_t ad7291_event_handler(int irq, void *private)
u16 t_status, v_status;
u16 command;
int i;
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
if (ad7291_i2c_read(chip, AD7291_T_ALERT_STATUS, &t_status))
return IRQ_HANDLED;
diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
index 62bb8f7..5dd0742 100644
--- a/drivers/iio/adc/ad7298.c
+++ b/drivers/iio/adc/ad7298.c
@@ -163,7 +163,7 @@ static irqreturn_t ad7298_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index be85c2a..6a14985 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -70,7 +70,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->data,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
index 2d3c397..361fae0 100644
--- a/drivers/iio/adc/ad7887.c
+++ b/drivers/iio/adc/ad7887.c
@@ -122,7 +122,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->data,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
index 45e29cc..2a82b9e 100644
--- a/drivers/iio/adc/ad7923.c
+++ b/drivers/iio/adc/ad7923.c
@@ -181,7 +181,7 @@ static irqreturn_t ad7923_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index 01d7158..ec9dccb 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -212,7 +212,7 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p)
goto out;
iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
iio_trigger_notify_done(indio_dev->trig);
@@ -508,7 +508,7 @@ static irqreturn_t ad799x_event_handler(int irq, void *private)
(i >> 1),
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
done:
diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
index 8254f52..91636c0 100644
--- a/drivers/iio/adc/cc10001_adc.c
+++ b/drivers/iio/adc/cc10001_adc.c
@@ -186,7 +186,7 @@ done:
if (!sample_invalid)
iio_push_to_buffers_with_timestamp(indio_dev, data,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
index c73c6c6..c62bdb0 100644
--- a/drivers/iio/adc/hi8435.c
+++ b/drivers/iio/adc/hi8435.c
@@ -400,7 +400,7 @@ static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val)
iio_push_event(idev,
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i,
IIO_EV_TYPE_THRESH, dir),
- iio_get_time_ns());
+ iio_get_time_ns(idev));
}
}
diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
index 65909d5..ee1baf0 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -443,7 +443,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
s64 time_a, time_b;
unsigned int alert;
- time_a = iio_get_time_ns();
+ time_a = iio_get_time_ns(indio_dev);
/*
* Because the timer thread and the chip conversion clock
@@ -482,7 +482,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
data[i++] = val;
}
- time_b = iio_get_time_ns();
+ time_b = iio_get_time_ns(indio_dev);
iio_push_to_buffers_with_timestamp(indio_dev,
(unsigned int *)data, time_a);
@@ -532,7 +532,7 @@ static int ina2xx_buffer_enable(struct iio_dev *indio_dev)
dev_dbg(&indio_dev->dev, "Async readout mode: %d\n",
chip->allow_async_readout);
- chip->prev_ns = iio_get_time_ns();
+ chip->prev_ns = iio_get_time_ns(indio_dev);
chip->task = kthread_run(ina2xx_capture_thread, (void *)indio_dev,
"%s:%d-%uus", indio_dev->name, indio_dev->id,
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 929508e..0a4682b 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -788,7 +788,7 @@ static irqreturn_t max1363_event_handler(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct max1363_state *st = iio_priv(indio_dev);
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
unsigned long mask, loc;
u8 rx;
u8 tx[2] = { st->setupbyte,
@@ -1506,7 +1506,8 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
if (b_sent < 0)
goto done_free;
- iio_push_to_buffers_with_timestamp(indio_dev, rxbuf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, rxbuf,
+ iio_get_time_ns(indio_dev));
done_free:
kfree(rxbuf);
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index 73cbf0b..b5f3eb9 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -225,7 +225,8 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p)
buf[0] = res;
mutex_unlock(&data->lock);
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
err:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index b10f629..33f80a9 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -594,7 +594,8 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
if (iio_buffer_enabled(indio_dev)) {
info->buffer[0] = info->value;
iio_push_to_buffers_with_timestamp(indio_dev,
- info->buffer, iio_get_time_ns());
+ info->buffer,
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
} else
complete(&info->completion);
diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
index edcf3aa..6d5c2a6 100644
--- a/drivers/iio/adc/xilinx-xadc-events.c
+++ b/drivers/iio/adc/xilinx-xadc-events.c
@@ -46,7 +46,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else {
/*
* For other channels we don't know whether it is a upper or
@@ -56,7 +56,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
index 62b37cd..be37e24 100644
--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -183,7 +183,7 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
if (!ret)
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
index 968712b..559061a 100644
--- a/drivers/iio/dac/ad5421.c
+++ b/drivers/iio/dac/ad5421.c
@@ -242,7 +242,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
if (events & AD5421_FAULT_UNDER_CURRENT) {
@@ -251,7 +251,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
if (events & AD5421_FAULT_TEMP_OVER_140) {
@@ -260,7 +260,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
0,
IIO_EV_TYPE_MAG,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
old_fault = fault;
diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
index 4e4c20d..788b3d6 100644
--- a/drivers/iio/dac/ad5504.c
+++ b/drivers/iio/dac/ad5504.c
@@ -223,7 +223,7 @@ static irqreturn_t ad5504_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns((struct iio_dev *)private));
return IRQ_HANDLED;
}
diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
index cf44a6f..b383892 100644
--- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
+++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
@@ -85,7 +85,8 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
}
}
- iio_push_to_buffers_with_timestamp(indio_dev, data, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, data,
+ iio_get_time_ns(indio_dev));
kfree(data);
diff --git a/drivers/iio/dummy/iio_simple_dummy_events.c b/drivers/iio/dummy/iio_simple_dummy_events.c
index 6eb600f..ed63ffd 100644
--- a/drivers/iio/dummy/iio_simple_dummy_events.c
+++ b/drivers/iio/dummy/iio_simple_dummy_events.c
@@ -158,7 +158,7 @@ static irqreturn_t iio_simple_dummy_get_timestamp(int irq, void *private)
struct iio_dev *indio_dev = private;
struct iio_dummy_state *st = iio_priv(indio_dev);
- st->event_timestamp = iio_get_time_ns();
+ st->event_timestamp = iio_get_time_ns(indio_dev);
return IRQ_WAKE_THREAD;
}
diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c
index bbce3b0..4cefcc0 100644
--- a/drivers/iio/gyro/bmg160_core.c
+++ b/drivers/iio/gyro/bmg160_core.c
@@ -884,25 +884,25 @@ static irqreturn_t bmg160_event_handler(int irq, void *private)
if (val & BMG160_ANY_MOTION_BIT_X)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
- 0,
- IIO_MOD_X,
- IIO_EV_TYPE_ROC,
- dir),
- iio_get_time_ns());
+ 0,
+ IIO_MOD_X,
+ IIO_EV_TYPE_ROC,
+ dir),
+ iio_get_time_ns(indio_dev));
if (val & BMG160_ANY_MOTION_BIT_Y)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
- 0,
- IIO_MOD_Y,
- IIO_EV_TYPE_ROC,
- dir),
- iio_get_time_ns());
+ 0,
+ IIO_MOD_Y,
+ IIO_EV_TYPE_ROC,
+ dir),
+ iio_get_time_ns(indio_dev));
if (val & BMG160_ANY_MOTION_BIT_Z)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
- 0,
- IIO_MOD_Z,
- IIO_EV_TYPE_ROC,
- dir),
- iio_get_time_ns());
+ 0,
+ IIO_MOD_Z,
+ IIO_EV_TYPE_ROC,
+ dir),
+ iio_get_time_ns(indio_dev));
ack_intr_status:
if (!data->dready_trigger_on) {
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
index 3598835..4c45488 100644
--- a/drivers/iio/iio_core.h
+++ b/drivers/iio/iio_core.h
@@ -79,4 +79,7 @@ void iio_device_unregister_eventset(struct iio_dev *indio_dev);
void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
int iio_event_getfd(struct iio_dev *indio_dev);
+struct iio_event_interface;
+bool iio_event_enabled(const struct iio_event_interface *ev_int);
+
#endif
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
index d070062..3a9f3ea 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
@@ -107,7 +107,7 @@ irqreturn_t inv_mpu6050_irq_handler(int irq, void *p)
struct inv_mpu6050_state *st = iio_priv(indio_dev);
s64 timestamp;
- timestamp = iio_get_time_ns();
+ timestamp = iio_get_time_ns(indio_dev);
kfifo_in_spinlocked(&st->timestamps, ×tamp, 1,
&st->time_stamp_lock);
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 70cb7eb..dbaf56b 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -174,6 +174,86 @@ ssize_t iio_read_const_attr(struct device *dev,
}
EXPORT_SYMBOL(iio_read_const_attr);
+static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
+{
+ int ret;
+ const struct iio_event_interface *ev_int = indio_dev->event_interface;
+
+ ret = mutex_lock_interruptible(&indio_dev->mlock);
+ if (ret)
+ return ret;
+ if ((ev_int && iio_event_enabled(ev_int)) ||
+ iio_buffer_enabled(indio_dev)) {
+ mutex_unlock(&indio_dev->mlock);
+ return -EBUSY;
+ }
+ indio_dev->clock_id = clock_id;
+ mutex_unlock(&indio_dev->mlock);
+
+ return 0;
+}
+
+/**
+ * iio_get_time_ns() - utility function to get a time stamp for events etc
+ * @indio_dev: device
+ */
+s64 iio_get_time_ns(const struct iio_dev *indio_dev)
+{
+ struct timespec tp;
+
+ switch (iio_device_get_clock(indio_dev)) {
+ case CLOCK_REALTIME:
+ ktime_get_real_ts(&tp);
+ break;
+ case CLOCK_MONOTONIC:
+ ktime_get_ts(&tp);
+ break;
+ case CLOCK_MONOTONIC_RAW:
+ getrawmonotonic(&tp);
+ break;
+ case CLOCK_REALTIME_COARSE:
+ tp = current_kernel_time();
+ break;
+ case CLOCK_MONOTONIC_COARSE:
+ tp = get_monotonic_coarse();
+ break;
+ case CLOCK_BOOTTIME:
+ get_monotonic_boottime(&tp);
+ break;
+ case CLOCK_TAI:
+ timekeeping_clocktai(&tp);
+ break;
+ default:
+ BUG();
+ }
+
+ return timespec_to_ns(&tp);
+}
+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;
@@ -904,11 +984,91 @@ static ssize_t iio_show_dev_name(struct device *dev,
static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
+static ssize_t iio_show_timestamp_clock(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ const struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ const clockid_t clk = iio_device_get_clock(indio_dev);
+ const char *name;
+ ssize_t sz;
+
+ switch (clk) {
+ case CLOCK_REALTIME:
+ name = "realtime\n";
+ sz = sizeof("realtime\n");
+ break;
+ case CLOCK_MONOTONIC:
+ name = "monotonic\n";
+ sz = sizeof("monotonic\n");
+ break;
+ case CLOCK_MONOTONIC_RAW:
+ name = "monotonic_raw\n";
+ sz = sizeof("monotonic_raw\n");
+ break;
+ case CLOCK_REALTIME_COARSE:
+ name = "realtime_coarse\n";
+ sz = sizeof("realtime_coarse\n");
+ break;
+ case CLOCK_MONOTONIC_COARSE:
+ name = "monotonic_coarse\n";
+ sz = sizeof("monotonic_coarse\n");
+ break;
+ case CLOCK_BOOTTIME:
+ name = "boottime\n";
+ sz = sizeof("boottime\n");
+ break;
+ case CLOCK_TAI:
+ name = "tai\n";
+ sz = sizeof("tai\n");
+ break;
+ default:
+ BUG();
+ }
+
+ memcpy(buf, name, sz);
+ return sz;
+}
+
+static ssize_t iio_store_timestamp_clock(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ clockid_t clk;
+ int ret;
+
+ if (sysfs_streq(buf, "realtime"))
+ clk = CLOCK_REALTIME;
+ else if (sysfs_streq(buf, "monotonic"))
+ clk = CLOCK_MONOTONIC;
+ else if (sysfs_streq(buf, "monotonic_raw"))
+ clk = CLOCK_MONOTONIC_RAW;
+ else if (sysfs_streq(buf, "realtime_coarse"))
+ clk = CLOCK_REALTIME_COARSE;
+ else if (sysfs_streq(buf, "monotonic_coarse"))
+ clk = CLOCK_MONOTONIC_COARSE;
+ else if (sysfs_streq(buf, "boottime"))
+ clk = CLOCK_BOOTTIME;
+ else if (sysfs_streq(buf, "tai"))
+ clk = CLOCK_TAI;
+ else
+ return -EINVAL;
+
+ ret = iio_device_set_clock(dev_to_iio_dev(dev), clk);
+ if (ret)
+ return ret;
+
+ return len;
+}
+
+static DEVICE_ATTR(current_timestamp_clock, S_IRUGO | S_IWUSR,
+ iio_show_timestamp_clock, iio_store_timestamp_clock);
+
static int iio_device_register_sysfs(struct iio_dev *indio_dev)
{
int i, ret = 0, attrcount, attrn, attrcount_orig = 0;
struct iio_dev_attr *p;
- struct attribute **attr;
+ struct attribute **attr, *clk = NULL;
/* First count elements in any existing group */
if (indio_dev->info->attrs) {
@@ -923,16 +1083,25 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
*/
if (indio_dev->channels)
for (i = 0; i < indio_dev->num_channels; i++) {
- ret = iio_device_add_channel_sysfs(indio_dev,
- &indio_dev
- ->channels[i]);
+ const struct iio_chan_spec *chan =
+ &indio_dev->channels[i];
+
+ if (chan->type == IIO_TIMESTAMP)
+ clk = &dev_attr_current_timestamp_clock.attr;
+
+ ret = iio_device_add_channel_sysfs(indio_dev, chan);
if (ret < 0)
goto error_clear_attrs;
attrcount += ret;
}
+ if (indio_dev->event_interface)
+ clk = &dev_attr_current_timestamp_clock.attr;
+
if (indio_dev->name)
attrcount++;
+ if (clk)
+ attrcount++;
indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1,
sizeof(indio_dev->chan_attr_group.attrs[0]),
@@ -953,6 +1122,8 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
indio_dev->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
if (indio_dev->name)
indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
+ if (clk)
+ indio_dev->chan_attr_group.attrs[attrn++] = clk;
indio_dev->groups[indio_dev->groupcounter++] =
&indio_dev->chan_attr_group;
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index cae332b..0ebfc92 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -44,6 +44,11 @@ struct iio_event_interface {
struct mutex read_lock;
};
+bool iio_event_enabled(const struct iio_event_interface *ev_int)
+{
+ return !!test_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
+}
+
/**
* iio_push_event() - try to add event to the list for userspace reading
* @indio_dev: IIO device structure
@@ -60,7 +65,7 @@ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp)
int copied;
/* Does anyone care? */
- if (test_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
+ if (iio_event_enabled(ev_int)) {
ev.id = ev_code;
ev.timestamp = timestamp;
@@ -180,8 +185,14 @@ int iio_event_getfd(struct iio_dev *indio_dev)
if (ev_int == NULL)
return -ENODEV;
- if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags))
- return -EBUSY;
+ fd = mutex_lock_interruptible(&indio_dev->mlock);
+ if (fd)
+ return fd;
+
+ if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
+ fd = -EBUSY;
+ goto unlock;
+ }
iio_device_get(indio_dev);
@@ -194,6 +205,8 @@ int iio_event_getfd(struct iio_dev *indio_dev)
kfifo_reset_out(&ev_int->det_events);
}
+unlock:
+ mutex_unlock(&indio_dev->mlock);
return fd;
}
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index ae2806a..cf93717 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -251,7 +251,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
irqreturn_t iio_pollfunc_store_time(int irq, void *p)
{
struct iio_poll_func *pf = p;
- pf->timestamp = iio_get_time_ns();
+ pf->timestamp = iio_get_time_ns(pf->indio_dev);
return IRQ_WAKE_THREAD;
}
EXPORT_SYMBOL(iio_pollfunc_store_time);
diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c
index 53201d9..f0b47c5 100644
--- a/drivers/iio/light/acpi-als.c
+++ b/drivers/iio/light/acpi-als.c
@@ -118,7 +118,7 @@ static void acpi_als_notify(struct acpi_device *device, u32 event)
struct iio_dev *indio_dev = acpi_driver_data(device);
struct acpi_als *als = iio_priv(indio_dev);
s32 *buffer = als->evt_buffer;
- s64 time_ns = iio_get_time_ns();
+ s64 time_ns = iio_get_time_ns(indio_dev);
s32 val;
int ret;
diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c
index 09ad5f1..0113fc8 100644
--- a/drivers/iio/light/adjd_s311.c
+++ b/drivers/iio/light/adjd_s311.c
@@ -118,7 +118,7 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p)
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct adjd_s311_data *data = iio_priv(indio_dev);
- s64 time_ns = iio_get_time_ns();
+ s64 time_ns = iio_get_time_ns(indio_dev);
int i, j = 0;
int ret = adjd_s311_req_data(indio_dev);
diff --git a/drivers/iio/light/apds9300.c b/drivers/iio/light/apds9300.c
index e1b9fa5..649b26f 100644
--- a/drivers/iio/light/apds9300.c
+++ b/drivers/iio/light/apds9300.c
@@ -396,7 +396,7 @@ static irqreturn_t apds9300_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(dev_info));
apds9300_clear_intr(data);
diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c
index f6a07dc..42ef6cf 100644
--- a/drivers/iio/light/apds9960.c
+++ b/drivers/iio/light/apds9960.c
@@ -801,7 +801,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
regmap_write(data->regmap, APDS9960_REG_CICLEAR, 1);
}
@@ -810,7 +810,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
regmap_write(data->regmap, APDS9960_REG_PICLEAR, 1);
}
diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
index c8d7b5e..9d66e89 100644
--- a/drivers/iio/light/cm36651.c
+++ b/drivers/iio/light/cm36651.c
@@ -268,7 +268,7 @@ static irqreturn_t cm36651_irq_handler(int irq, void *data)
CM36651_CMD_READ_RAW_PROXIMITY,
IIO_EV_TYPE_THRESH, ev_dir);
- iio_push_event(indio_dev, ev_code, iio_get_time_ns());
+ iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
return IRQ_HANDLED;
}
diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
index 6d41086..f558a2b 100644
--- a/drivers/iio/light/gp2ap020a00f.c
+++ b/drivers/iio/light/gp2ap020a00f.c
@@ -851,7 +851,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
GP2AP020A00F_SCAN_MODE_PROXIMITY,
IIO_EV_TYPE_ROC,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else {
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(
@@ -859,7 +859,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
GP2AP020A00F_SCAN_MODE_PROXIMITY,
IIO_EV_TYPE_ROC,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
@@ -925,7 +925,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
IIO_MOD_LIGHT_CLEAR,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
if (test_bit(GP2AP020A00F_FLAG_ALS_FALLING_EV, &priv->flags)) {
@@ -939,7 +939,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
IIO_MOD_LIGHT_CLEAR,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
diff --git a/drivers/iio/light/isl29125.c b/drivers/iio/light/isl29125.c
index e2945a2..67ccc5e 100644
--- a/drivers/iio/light/isl29125.c
+++ b/drivers/iio/light/isl29125.c
@@ -189,7 +189,7 @@ static irqreturn_t isl29125_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index e56937c..f409c20 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -267,7 +267,7 @@ static irqreturn_t lm3533_als_isr(int irq, void *dev_id)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
return IRQ_HANDLED;
}
diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 6bf89d8..3afc53a 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -1256,7 +1256,8 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
buf[j++] = psdata & LTR501_PS_DATA_MASK;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -1282,14 +1283,14 @@ static irqreturn_t ltr501_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
if (status & LTR501_STATUS_PS_INTR)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
return IRQ_HANDLED;
}
diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
index b776c8e..78c9b3a 100644
--- a/drivers/iio/light/opt3001.c
+++ b/drivers/iio/light/opt3001.c
@@ -713,13 +713,13 @@ static irqreturn_t opt3001_irq(int irq, void *_iio)
IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(iio));
if (ret & OPT3001_CONFIGURATION_FL)
iio_push_event(iio,
IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(iio));
} else if (ret & OPT3001_CONFIGURATION_CRF) {
ret = i2c_smbus_read_word_swapped(opt->client, OPT3001_RESULT);
if (ret < 0) {
diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
index 42d334b..b48641d 100644
--- a/drivers/iio/light/stk3310.c
+++ b/drivers/iio/light/stk3310.c
@@ -529,7 +529,7 @@ static irqreturn_t stk3310_irq_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct stk3310_data *data = iio_priv(indio_dev);
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
return IRQ_WAKE_THREAD;
}
diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
index f90f8c5..936e764 100644
--- a/drivers/iio/light/tcs3414.c
+++ b/drivers/iio/light/tcs3414.c
@@ -217,7 +217,7 @@ static irqreturn_t tcs3414_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
index 1b530bf..95519a3 100644
--- a/drivers/iio/light/tcs3472.c
+++ b/drivers/iio/light/tcs3472.c
@@ -204,7 +204,7 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
index 12731d6..27dbfdd 100644
--- a/drivers/iio/light/tsl2563.c
+++ b/drivers/iio/light/tsl2563.c
@@ -630,7 +630,7 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(dev_info));
/* clear the interrupt and push the event */
i2c_smbus_write_byte(chip->client, TSL2563_CMD | TSL2563_CLEARINT);
diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c
index 45bc2f7..20c40f7 100644
--- a/drivers/iio/light/us5182d.c
+++ b/drivers/iio/light/us5182d.c
@@ -833,7 +833,7 @@ static irqreturn_t us5182d_irq_thread_handler(int irq, void *private)
dir = ret & US5182D_CFG0_PROX ? IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, IIO_EV_TYPE_THRESH, dir);
- iio_push_event(indio_dev, ev, iio_get_time_ns());
+ iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG0,
ret & ~US5182D_CFG0_PX_IRQ);
diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
index 77882b4..ba3e2a3 100644
--- a/drivers/iio/magnetometer/hmc5843_core.c
+++ b/drivers/iio/magnetometer/hmc5843_core.c
@@ -451,7 +451,7 @@ static irqreturn_t hmc5843_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c
index 261d517..f2be4a0 100644
--- a/drivers/iio/magnetometer/mag3110.c
+++ b/drivers/iio/magnetometer/mag3110.c
@@ -261,7 +261,7 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
index 01b2e0b..6392d7b 100644
--- a/drivers/iio/pressure/mpl3115.c
+++ b/drivers/iio/pressure/mpl3115.c
@@ -171,7 +171,7 @@ static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
mutex_unlock(&data->lock);
iio_push_to_buffers_with_timestamp(indio_dev, buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c
index 37dbc04..8bc178b 100644
--- a/drivers/iio/pressure/ms5611_core.c
+++ b/drivers/iio/pressure/ms5611_core.c
@@ -224,7 +224,8 @@ static irqreturn_t ms5611_trigger_handler(int irq, void *p)
if (ret < 0)
goto err;
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
err:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index 4f502386..b216220 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -244,7 +244,7 @@ static irqreturn_t lidar_trigger_handler(int irq, void *private)
ret = lidar_get_measurement(data, data->buffer);
if (!ret) {
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else if (ret != -EINVAL) {
dev_err(&data->client->dev, "cannot read LIDAR measurement");
}
diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
index 66cd09a..1d74b3a 100644
--- a/drivers/iio/proximity/sx9500.c
+++ b/drivers/iio/proximity/sx9500.c
@@ -492,7 +492,7 @@ static void sx9500_push_events(struct iio_dev *indio_dev)
dir = new_prox ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
IIO_EV_TYPE_THRESH, dir);
- iio_push_event(indio_dev, ev, iio_get_time_ns());
+ iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
data->prox_stat[chan] = new_prox;
}
}
@@ -669,7 +669,7 @@ static irqreturn_t sx9500_trigger_handler(int irq, void *private)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
mutex_unlock(&data->mutex);
diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c
index 7a6fed3..5c3410a 100644
--- a/drivers/staging/iio/accel/lis3l02dq_core.c
+++ b/drivers/staging/iio/accel/lis3l02dq_core.c
@@ -451,7 +451,7 @@ static irqreturn_t lis3l02dq_event_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
u8 t;
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
lis3l02dq_spi_read_reg_8(indio_dev,
LIS3L02DQ_REG_WAKE_UP_SRC_ADDR,
diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
index a8f533a..cff7e4a 100644
--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -774,7 +774,7 @@ static irqreturn_t sca3000_event_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct sca3000_state *st = iio_priv(indio_dev);
int ret, val;
- s64 last_timestamp = iio_get_time_ns();
+ s64 last_timestamp = iio_get_time_ns(indio_dev);
/*
* Could lead if badly timed to an extra read of status reg,
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index 62e5eca..69fa4eb 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -705,7 +705,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
IIO_EV_DIR_RISING,
IIO_EV_TYPE_THRESH,
0, 0, 0),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
else if (((channels[i] >> 11) & 0xFFF) <=
st->cell_threshlow)
iio_push_event(indio_dev,
@@ -715,7 +715,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
IIO_EV_DIR_FALLING,
IIO_EV_TYPE_THRESH,
0, 0, 0),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else {
if (((channels[i] >> 11) & 0xFFF) >= st->aux_threshhigh)
iio_push_event(indio_dev,
@@ -724,7 +724,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
else if (((channels[i] >> 11) & 0xFFF) <=
st->aux_threshlow)
iio_push_event(indio_dev,
@@ -733,7 +733,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
index a6f8eb1..0572df9 100644
--- a/drivers/staging/iio/adc/ad7606_ring.c
+++ b/drivers/staging/iio/adc/ad7606_ring.c
@@ -77,7 +77,8 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
goto done;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
gpio_set_value(st->pdata->gpio_convst, 0);
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index ac3735c..5e8115b 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -253,7 +253,8 @@ static const struct attribute_group ad7816_attribute_group = {
static irqreturn_t ad7816_event_handler(int irq, void *private)
{
- iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI, iio_get_time_ns());
+ iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI,
+ iio_get_time_ns((struct iio_dev *)private));
return IRQ_HANDLED;
}
diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
index 3adc451..f4ea954 100644
--- a/drivers/staging/iio/addac/adt7316.c
+++ b/drivers/staging/iio/addac/adt7316.c
@@ -1755,7 +1755,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
stat1 &= 0x1F;
- time = iio_get_time_ns();
+ time = iio_get_time_ns(indio_dev);
if (stat1 & BIT(0))
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
@@ -1807,7 +1807,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
return IRQ_HANDLED;
diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index f6b9a10..5578a07 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -493,7 +493,7 @@ static irqreturn_t ad7150_event_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct ad7150_chip_info *chip = iio_priv(indio_dev);
u8 int_status;
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
int ret;
ret = i2c_smbus_read_byte_data(chip->client, AD7150_STATUS);
diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
index 2a62718..d35b503 100644
--- a/drivers/staging/iio/light/tsl2x7x_core.c
+++ b/drivers/staging/iio/light/tsl2x7x_core.c
@@ -1524,7 +1524,7 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
int ret;
u8 value;
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index b2b1677..8b1db3a 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -281,13 +281,8 @@ static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
}, \
}
-/**
- * iio_get_time_ns() - utility function to get a time stamp for events etc
- **/
-static inline s64 iio_get_time_ns(void)
-{
- return ktime_get_real_ns();
-}
+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 */
#define INDIO_DIRECT_MODE 0x01
@@ -466,6 +461,7 @@ struct iio_buffer_setup_ops {
* @chan_attr_group: [INTERN] group for all attrs in base directory
* @name: [DRIVER] name of the device.
* @info: [DRIVER] callbacks and constant info from driver
+ * @clock_id: [INTERN] timestamping clock posix identifier
* @info_exist_lock: [INTERN] lock to prevent use during removal
* @setup_ops: [DRIVER] callbacks to call before and after buffer
* enable/disable
@@ -506,6 +502,7 @@ struct iio_dev {
struct attribute_group chan_attr_group;
const char *name;
const struct iio_info *info;
+ clockid_t clock_id;
struct mutex info_exist_lock;
const struct iio_buffer_setup_ops *setup_ops;
struct cdev chrdev;
@@ -532,7 +529,7 @@ extern struct bus_type iio_bus_type;
/**
* iio_device_put() - reference counted deallocation of struct device
- * @indio_dev: IIO device structure containing the device
+ * @indio_dev: IIO device structure containing the device
**/
static inline void iio_device_put(struct iio_dev *indio_dev)
{
@@ -541,6 +538,15 @@ static inline void iio_device_put(struct iio_dev *indio_dev)
}
/**
+ * iio_device_get_clock() - Retrieve current timestamping clock for the device
+ * @indio_dev: IIO device structure containing the device
+ */
+static inline clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
+{
+ return indio_dev->clock_id;
+}
+
+/**
* dev_to_iio_dev() - Get IIO device struct from a device struct
* @dev: The device embedded in the IIO device
*
--
2.1.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v5 2/2] iio:core: timestamping clock selection support
2016-03-09 18:05 ` [PATCH v5 2/2] iio:core: timestamping clock selection support Gregor Boirie
@ 2016-03-10 7:06 ` maitysanchayan
2016-06-30 19:13 ` Jonathan Cameron
0 siblings, 1 reply; 5+ messages in thread
From: maitysanchayan @ 2016-03-10 7:06 UTC (permalink / raw)
To: Gregor Boirie; +Cc: Jonathan Cameron, Stefan Agner, linux-iio
Hello Gregor,
On 16-03-09 19:05:49, Gregor Boirie wrote:
> 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 <gregor.boirie@parrot.com>
> ---
> Documentation/ABI/testing/sysfs-bus-iio | 7 +
> Documentation/DocBook/iio.tmpl | 2 +-
> drivers/iio/accel/bma180.c | 2 +-
> drivers/iio/accel/bmc150-accel-core.c | 4 +-
> drivers/iio/accel/kxcjk-1013.c | 2 +-
> drivers/iio/accel/mma7455_core.c | 3 +-
> drivers/iio/accel/mma8452.c | 4 +-
> drivers/iio/accel/mma9551.c | 2 +-
> drivers/iio/accel/mma9553.c | 2 +-
> drivers/iio/adc/ad7291.c | 2 +-
> drivers/iio/adc/ad7298.c | 2 +-
> drivers/iio/adc/ad7476.c | 2 +-
> drivers/iio/adc/ad7887.c | 2 +-
> drivers/iio/adc/ad7923.c | 2 +-
> drivers/iio/adc/ad799x.c | 4 +-
> drivers/iio/adc/cc10001_adc.c | 2 +-
> drivers/iio/adc/hi8435.c | 2 +-
> drivers/iio/adc/ina2xx-adc.c | 6 +-
> drivers/iio/adc/max1363.c | 5 +-
> drivers/iio/adc/ti-ads1015.c | 3 +-
> drivers/iio/adc/vf610_adc.c | 3 +-
Thanks for implementing this.
For what it's worth, I tested this on Colibri Vybrid VF61 for a while and
all seems to work fine.
So with the testing for vf610_adc driver
Acked-by: Sanchayan Maity <maitysanchayan@gmail.com>
Regards,
Sanchayan.
> drivers/iio/adc/xilinx-xadc-events.c | 4 +-
> drivers/iio/chemical/atlas-ph-sensor.c | 2 +-
> drivers/iio/dac/ad5421.c | 6 +-
> drivers/iio/dac/ad5504.c | 2 +-
> drivers/iio/dummy/iio_simple_dummy_buffer.c | 3 +-
> drivers/iio/dummy/iio_simple_dummy_events.c | 2 +-
> drivers/iio/gyro/bmg160_core.c | 30 ++--
> drivers/iio/iio_core.h | 3 +
> drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 2 +-
> drivers/iio/industrialio-core.c | 179 +++++++++++++++++++++-
> drivers/iio/industrialio-event.c | 19 ++-
> drivers/iio/industrialio-trigger.c | 2 +-
> drivers/iio/light/acpi-als.c | 2 +-
> drivers/iio/light/adjd_s311.c | 2 +-
> drivers/iio/light/apds9300.c | 2 +-
> drivers/iio/light/apds9960.c | 4 +-
> drivers/iio/light/cm36651.c | 2 +-
> drivers/iio/light/gp2ap020a00f.c | 8 +-
> drivers/iio/light/isl29125.c | 2 +-
> drivers/iio/light/lm3533-als.c | 2 +-
> drivers/iio/light/ltr501.c | 7 +-
> dr> drivers/iio/light/stk3310.c | 2 +-
> drivers/iio/light/tcs3414.c | 2 +-
> drivers/iio/light/tcs3472.c | 2 +-
> drivers/iio/light/tsl2563.c | 2 +-
> drivers/iio/light/us5182d.c | 2 +-
> drivers/iio/magnetometer/hmc5843_core.c | 2 +-
> drivers/iio/magnetometer/mag3110.c | 2 +-
> drivers/iio/pressure/mpl3115.c | 2 +-
> drivers/iio/pressure/ms5611_core.c | 3 +-
> drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 2 +-
> drivers/iio/proximity/sx9500.c | 4 +-
> drivers/staging/iio/accel/lis3l02dq_core.c | 2 +-
> drivers/staging/iio/accel/sca3000_core.c | 2 +-
> drivers/staging/iio/adc/ad7280a.c | 8 +-
> drivers/staging/iio/adc/ad7606_ring.c | 3 +-
> drivers/staging/iio/adc/ad7816.c | 3 +-
> drivers/staging/iio/addac/adt7316.c | 4 +-
> drivers/staging/iio/cdc/ad7150.c | 2 +-
> drivers/staging/iio/light/tsl2x7x_core.c | 2 +-
> include/linux/iio/iio.h | 22 ++-
> 63 files changed, 317 insertions(+), 108 deletions(-)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 3c66248..c374b21 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 f525bf5..e2ab6a1 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;
> }
>
> diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
> index f04b884..e3f88ba 100644
> --- a/drivers/iio/accel/bma180.c
> +++ b/drivers/iio/accel/bma180.c
> @@ -654,7 +654,7 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p)
> struct iio_poll_func *pf = p;
> struct iio_dev *indio_dev = pf->indio_dev;
> struct bma180_data *data = iio_priv(indio_dev);
> - int64_t time_ns = iio_get_time_ns();
> + s64 time_ns = iio_get_time_ns(indio_dev);
> int bit, ret, i = 0;
>
> mutex_lock(&data->mutex);
> diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
> index c73331f7..0529461 100644
> --- a/drivers/iio/accel/bmc150-accel-core.c
> +++ b/drivers/iio/accel/bmc150-accel-core.c
> @@ -892,7 +892,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
> */
> if (!irq) {
> data->old_timestamp = data->timestamp;
> - data->timestamp = iio_get_time_ns();
> + data->timestamp = iio_get_time_ns(indio_dev);
> }
>
> /*
> @@ -1295,7 +1295,7 @@ static irqreturn_t bmc150_accel_irq_handler(int irq, void *private)
> int i;
>
> data->old_timestamp = data->timestamp;
> - data->timestamp = iio_get_time_ns();
> + data->timestamp = iio_get_time_ns(indio_dev);
>
> for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
> if (data->triggers[i].enabled) {
> diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
> index edec1d0..36539a2 100644
> --- a/drivers/iio/accel/kxcjk-1013.c
> +++ b/drivers/iio/accel/kxcjk-1013.c
> @@ -1131,7 +1131,7 @@ static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
> struct iio_dev *indio_dev = private;
> struct kxcjk1013_data *data = iio_priv(indio_dev);
>
> - data->timestamp = iio_get_time_ns();
> + data->timestamp = iio_get_time_ns(indio_dev);
>
> if (data->dready_trigger_on)
> iio_trigger_poll(data->dready_trig);
> diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c
> index c633cc2..91e2c04 100644
> --- a/drivers/iio/accel/mma7455_core.c
> +++ b/drivers/iio/accel/mma7455_core.c
> @@ -97,7 +97,8 @@ static irqreturn_t mma7455_trigger_handler(int irq, void *p)
> if (ret)
> goto done;
>
> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
> index 5ca0d16..b9ca5ad 100644
> --- a/drivers/iio/accel/mma8452.c
> +++ b/drivers/iio/accel/mma8452.c
> @@ -783,7 +783,7 @@ static int mma8452_write_event_config(struct iio_dev *indio_dev,
> static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
> {
> struct mma8452_data *data = iio_priv(indio_dev);
> - s64 ts = iio_get_time_ns();
> + s64 ts = iio_get_time_ns(indio_dev);
> int src;
>
> src = i2c_smbus_read_byte_data(data->client, data->chip_info->ev_src);
> @@ -863,7 +863,7 @@ static irqreturn_t mma8452_trigger_handler(int irq, void *p)
> goto done;
>
> iio_push_to_buffers_with_timestamp(indio_dev, buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
> index d899a4d..bf27044 100644
> --- a/drivers/iio/accel/mma9551.c
> +++ b/drivers/iio/accel/mma9551.c
> @@ -391,7 +391,7 @@ static irqreturn_t mma9551_event_handler(int irq, void *private)
> iio_push_event(indio_dev,
> IIO_MOD_EVENT_CODE(IIO_INCLI, 0, (mma_axis + 1),
> IIO_EV_TYPE_ROC, IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> out:
> mutex_unlock(&data->mutex);
> diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
> index fa7d362..55b4868 100644
> --- a/drivers/iio/accel/mma9553.c
> +++ b/drivers/iio/accel/mma9553.c
> @@ -1002,7 +1002,7 @@ static irqreturn_t mma9553_irq_handler(int irq, void *private)
> struct iio_dev *indio_dev = private;
> struct mma9553_data *data = iio_priv(indio_dev);
>
> - data->timestamp = iio_get_time_ns();
> + data->timestamp = iio_get_time_ns(indio_dev);
> /*
> * Since we only configure the interrupt pin when an
> * event is enabled, we are sure we have at least
> diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
> index c0eabf1..0376309 100644
> --- a/drivers/iio/adc/ad7291.c
> +++ b/drivers/iio/adc/ad7291.c
> @@ -115,7 +115,7 @@ static irqreturn_t ad7291_event_handler(int irq, void *private)
> u16 t_status, v_status;
> u16 command;
> int i;
> - s64 timestamp = iio_get_time_ns();
> + s64 timestamp = iio_get_time_ns(indio_dev);
>
> if (ad7291_i2c_read(chip, AD7291_T_ALERT_STATUS, &t_status))
> return IRQ_HANDLED;
> diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
> index 62bb8f7..5dd0742 100644
> --- a/drivers/iio/adc/ad7298.c
> +++ b/drivers/iio/adc/ad7298.c
> @@ -163,7 +163,7 @@ static irqreturn_t ad7298_trigger_handler(int irq, void *p)
> goto done;
>
> iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
> index be85c2a..6a14985 100644
> --- a/drivers/iio/adc/ad7476.c
> +++ b/drivers/iio/adc/ad7476.c
> @@ -70,7 +70,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p)
> goto done;
>
> iio_push_to_buffers_with_timestamp(indio_dev, st->data,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> done:
> iio_trigger_notify_done(indio_dev->trig);
>
> diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
> index 2d3c397..361fae0 100644
> --- a/drivers/iio/adc/ad7887.c
> +++ b/drivers/iio/adc/ad7887.c
> @@ -122,7 +122,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
> goto done;
>
> iio_push_to_buffers_with_timestamp(indio_dev, st->data,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> done:
> iio_trigger_notify_done(indio_dev->trig);
>
> diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
> index 45e29cc..2a82b9e 100644
> --- a/drivers/iio/adc/ad7923.c
> +++ b/drivers/iio/adc/ad7923.c
> @@ -181,7 +181,7 @@ static irqreturn_t ad7923_trigger_handler(int irq, void *p)
> goto done;
>
> iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
> index 01d7158..ec9dccb 100644
> --- a/drivers/iio/adc/ad799x.c
> +++ b/drivers/iio/adc/ad799x.c
> @@ -212,7 +212,7 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p)
> goto out;
>
> iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> out:
> iio_trigger_notify_done(indio_dev->trig);
>
> @@ -508,7 +508,7 @@ static irqreturn_t ad799x_event_handler(int irq, void *private)
> (i >> 1),
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_FALLING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
>
> done:
> diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
> index 8254f52..91636c0 100644
> --- a/drivers/iio/adc/cc10001_adc.c
> +++ b/drivers/iio/adc/cc10001_adc.c
> @@ -186,7 +186,7 @@ done:
>
> if (!sample_invalid)
> iio_push_to_buffers_with_timestamp(indio_dev, data,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> iio_trigger_notify_done(indio_dev->trig);
>
> return IRQ_HANDLED;
> diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
> index c73c6c6..c62bdb0 100644
> --- a/drivers/iio/adc/hi8435.c
> +++ b/drivers/iio/adc/hi8435.c
> @@ -400,7 +400,7 @@ static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val)
> iio_push_event(idev,
> IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i,
> IIO_EV_TYPE_THRESH, dir),
> - iio_get_time_ns());
> + iio_get_time_ns(idev));
> }
> }
>
> diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
> index 65909d5..ee1baf0 100644
> --- a/drivers/iio/adc/ina2xx-adc.c
> +++ b/drivers/iio/adc/ina2xx-adc.c
> @@ -443,7 +443,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
> s64 time_a, time_b;
> unsigned int alert;
>
> - time_a = iio_get_time_ns();
> + time_a = iio_get_time_ns(indio_dev);
>
> /*
> * Because the timer thread and the chip conversion clock
> @@ -482,7 +482,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
> data[i++] = val;
> }
>
> - time_b = iio_get_time_ns();
> + time_b = iio_get_time_ns(indio_dev);
>
> iio_push_to_buffers_with_timestamp(indio_dev,
> (unsigned int *)data, time_a);
> @@ -532,7 +532,7 @@ static int ina2xx_buffer_enable(struct iio_dev *indio_dev)
> dev_dbg(&indio_dev->dev, "Async readout mode: %d\n",
> chip->allow_async_readout);
>
> - chip->prev_ns = iio_get_time_ns();
> + chip->prev_ns = iio_get_time_ns(indio_dev);
>
> chip->task = kthread_run(ina2xx_capture_thread, (void *)indio_dev,
> "%s:%d-%uus", indio_dev->name, indio_dev->id,
> diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
> index 929508e..0a4682b 100644
> --- a/drivers/iio/adc/max1363.c
> +++ b/drivers/iio/adc/max1363.c
> @@ -788,7 +788,7 @@ static irqreturn_t max1363_event_handler(int irq, void *private)
> {
> struct iio_dev *indio_dev = private;
> struct max1363_state *st = iio_priv(indio_dev);
> - s64 timestamp = iio_get_time_ns();
> + s64 timestamp = iio_get_time_ns(indio_dev);
> unsigned long mask, loc;
> u8 rx;
> u8 tx[2] = { st->setupbyte,
> @@ -1506,7 +1506,8 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
> if (b_sent < 0)
> goto done_free;
>
> - iio_push_to_buffers_with_timestamp(indio_dev, rxbuf, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, rxbuf,
> + iio_get_time_ns(indio_dev));
>
> done_free:
> kfree(rxbuf);
> diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
> index 73cbf0b..b5f3eb9 100644
> --- a/drivers/iio/adc/ti-ads1015.c
> +++ b/drivers/iio/adc/ti-ads1015.c
> @@ -225,7 +225,8 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p)
> buf[0] = res;
> mutex_unlock(&data->lock);
>
> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
> + iio_get_time_ns(indio_dev));
>
> err:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
> index b10f629..33f80a9 100644
> --- a/drivers/iio/adc/vf610_adc.c
> +++ b/drivers/iio/adc/vf610_adc.c
> @@ -594,7 +594,8 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
> if (iio_buffer_enabled(indio_dev)) {
> info->buffer[0] = info->value;
> iio_push_to_buffers_with_timestamp(indio_dev,
> - info->buffer, iio_get_time_ns());
> + info->buffer,
> + iio_get_time_ns(indio_dev));
> iio_trigger_notify_done(indio_dev->trig);
> } else
> complete(&info->completion);
> diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
> index edcf3aa..6d5c2a6 100644
> --- a/drivers/iio/adc/xilinx-xadc-events.c
> +++ b/drivers/iio/adc/xilinx-xadc-events.c
> @@ -46,7 +46,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
> IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> } else {
> /*
> * For other channels we don't know whether it is a upper or
> @@ -56,7 +56,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
> IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
> }
>
> diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
> index 62b37cd..be37e24 100644
> --- a/drivers/iio/chemical/atlas-ph-sensor.c
> +++ b/drivers/iio/chemical/atlas-ph-sensor.c
> @@ -183,7 +183,7 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
>
> if (!ret)
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> iio_trigger_notify_done(indio_dev->trig);
>
> diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
> index 968712b..559061a 100644
> --- a/drivers/iio/dac/ad5421.c
> +++ b/drivers/iio/dac/ad5421.c
> @@ -242,7 +242,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
>
> if (events & AD5421_FAULT_UNDER_CURRENT) {
> @@ -251,7 +251,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_FALLING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
>
> if (events & AD5421_FAULT_TEMP_OVER_140) {
> @@ -260,7 +260,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
> 0,
> IIO_EV_TYPE_MAG,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
>
> old_fault = fault;
> diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
> index 4e4c20d..788b3d6 100644
> --- a/drivers/iio/dac/ad5504.c
> +++ b/drivers/iio/dac/ad5504.c
> @@ -223,7 +223,7 @@ static irqreturn_t ad5504_event_handler(int irq, void *private)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns((struct iio_dev *)private));
>
> return IRQ_HANDLED;
> }
> diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
> index cf44a6f..b383892 100644
> --- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
> +++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
> @@ -85,7 +85,8 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
> }
> }
>
> - iio_push_to_buffers_with_timestamp(indio_dev, data, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, data,
> + iio_get_time_ns(indio_dev));
>
> kfree(data);
>
> diff --git a/drivers/iio/dummy/iio_simple_dummy_events.c b/drivers/iio/dummy/iio_simple_dummy_events.c
> index 6eb600f..ed63ffd 100644
> --- a/drivers/iio/dummy/iio_simple_dummy_events.c
> +++ b/drivers/iio/dummy/iio_simple_dummy_events.c
> @@ -158,7 +158,7 @@ static irqreturn_t iio_simple_dummy_get_timestamp(int irq, void *private)
> struct iio_dev *indio_dev = private;
> struct iio_dummy_state *st = iio_priv(indio_dev);
>
> - st->event_timestamp = iio_get_time_ns();
> + st->event_timestamp = iio_get_time_ns(indio_dev);
> return IRQ_WAKE_THREAD;
> }
>
> diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c
> index bbce3b0..4cefcc0 100644
> --- a/drivers/iio/gyro/bmg160_core.c
> +++ b/drivers/iio/gyro/bmg160_core.c
> @@ -884,25 +884,25 @@ static irqreturn_t bmg160_event_handler(int irq, void *private)
>
> if (val & BMG160_ANY_MOTION_BIT_X)
> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
> - 0,
> - IIO_MOD_X,
> - IIO_EV_TYPE_ROC,
> - dir),
> - iio_get_time_ns());
> + 0,
> + IIO_MOD_X,
> + IIO_EV_TYPE_ROC,
> + dir),
> + iio_get_time_ns(indio_dev));
> if (val & BMG160_ANY_MOTION_BIT_Y)
> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
> - 0,
> - IIO_MOD_Y,
> - IIO_EV_TYPE_ROC,
> - dir),
> - iio_get_time_ns());
> + 0,
> + IIO_MOD_Y,
> + IIO_EV_TYPE_ROC,
> + dir),
> + iio_get_time_ns(indio_dev));
> if (val & BMG160_ANY_MOTION_BIT_Z)
> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
> - 0,
> - IIO_MOD_Z,
> - IIO_EV_TYPE_ROC,
> - dir),
> - iio_get_time_ns());
> + 0,
> + IIO_MOD_Z,
> + IIO_EV_TYPE_ROC,
> + dir),
> + iio_get_time_ns(indio_dev));
>
> ack_intr_status:
> if (!data->dready_trigger_on) {
> diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
> index 3598835..4c45488 100644
> --- a/drivers/iio/iio_core.h
> +++ b/drivers/iio/iio_core.h
> @@ -79,4 +79,7 @@ void iio_device_unregister_eventset(struct iio_dev *indio_dev);
> void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
> int iio_event_getfd(struct iio_dev *indio_dev);
>
> +struct iio_event_interface;
> +bool iio_event_enabled(const struct iio_event_interface *ev_int);
> +
> #endif
> diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
> index d070062..3a9f3ea 100644
> --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
> +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
> @@ -107,7 +107,7 @@ irqreturn_t inv_mpu6050_irq_handler(int irq, void *p)
> struct inv_mpu6050_state *st = iio_priv(indio_dev);
> s64 timestamp;
>
> - timestamp = iio_get_time_ns();
> + timestamp = iio_get_time_ns(indio_dev);
> kfifo_in_spinlocked(&st->timestamps, ×tamp, 1,
> &st->time_stamp_lock);
>
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index 70cb7eb..dbaf56b 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -174,6 +174,86 @@ ssize_t iio_read_const_attr(struct device *dev,
> }
> EXPORT_SYMBOL(iio_read_const_attr);
>
> +static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
> +{
> + int ret;
> + const struct iio_event_interface *ev_int = indio_dev->event_interface;
> +
> + ret = mutex_lock_interruptible(&indio_dev->mlock);
> + if (ret)
> + return ret;
> + if ((ev_int && iio_event_enabled(ev_int)) ||
> + iio_buffer_enabled(indio_dev)) {
> + mutex_unlock(&indio_dev->mlock);
> + return -EBUSY;
> + }
> + indio_dev->clock_id = clock_id;
> + mutex_unlock(&indio_dev->mlock);
> +
> + return 0;
> +}
> +
> +/**
> + * iio_get_time_ns() - utility function to get a time stamp for events etc
> + * @indio_dev: device
> + */
> +s64 iio_get_time_ns(const struct iio_dev *indio_dev)
> +{
> + struct timespec tp;
> +
> + switch (iio_device_get_clock(indio_dev)) {
> + case CLOCK_REALTIME:
> + ktime_get_real_ts(&tp);
> + break;
> + case CLOCK_MONOTONIC:
> + ktime_get_ts(&tp);
> + break;
> + case CLOCK_MONOTONIC_RAW:
> + getrawmonotonic(&tp);
> + break;
> + case CLOCK_REALTIME_COARSE:
> + tp = current_kernel_time();
> + break;
> + case CLOCK_MONOTONIC_COARSE:
> + tp = get_monotonic_coarse();
> + break;
> + case CLOCK_BOOTTIME:
> + get_monotonic_boottime(&tp);
> + break;
> + case CLOCK_TAI:
> + timekeeping_clocktai(&tp);
> + break;
> + default:
> + BUG();
> + }
> +
> + return timespec_to_ns(&tp);
> +}
> +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;
> @@ -904,11 +984,91 @@ static ssize_t iio_show_dev_name(struct device *dev,
>
> static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
>
> +static ssize_t iio_show_timestamp_clock(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + const struct iio_dev *indio_dev = dev_to_iio_dev(dev);
> + const clockid_t clk = iio_device_get_clock(indio_dev);
> + const char *name;
> + ssize_t sz;
> +
> + switch (clk) {
> + case CLOCK_REALTIME:
> + name = "realtime\n";
> + sz = sizeof("realtime\n");
> + break;
> + case CLOCK_MONOTONIC:
> + name = "monotonic\n";
> + sz = sizeof("monotonic\n");
> + break;
> + case CLOCK_MONOTONIC_RAW:
> + name = "monotonic_raw\n";
> + sz = sizeof("monotonic_raw\n");
> + break;
> + case CLOCK_REALTIME_COARSE:
> + name = "realtime_coarse\n";
> + sz = sizeof("realtime_coarse\n");
> + break;
> + case CLOCK_MONOTONIC_COARSE:
> + name = "monotonic_coarse\n";
> + sz = sizeof("monotonic_coarse\n");
> + break;
> + case CLOCK_BOOTTIME:
> + name = "boottime\n";
> + sz = sizeof("boottime\n");
> + break;
> + case CLOCK_TAI:
> + name = "tai\n";
> + sz = sizeof("tai\n");
> + break;
> + default:
> + BUG();
> + }
> +
> + memcpy(buf, name, sz);
> + return sz;
> +}
> +
> +static ssize_t iio_store_timestamp_clock(struct device *dev,
> + struct device_attribute *attr,
> + const char *buf, size_t len)
> +{
> + clockid_t clk;
> + int ret;
> +
> + if (sysfs_streq(buf, "realtime"))
> + clk = CLOCK_REALTIME;
> + else if (sysfs_streq(buf, "monotonic"))
> + clk = CLOCK_MONOTONIC;
> + else if (sysfs_streq(buf, "monotonic_raw"))
> + clk = CLOCK_MONOTONIC_RAW;
> + else if (sysfs_streq(buf, "realtime_coarse"))
> + clk = CLOCK_REALTIME_COARSE;
> + else if (sysfs_streq(buf, "monotonic_coarse"))
> + clk = CLOCK_MONOTONIC_COARSE;
> + else if (sysfs_streq(buf, "boottime"))
> + clk = CLOCK_BOOTTIME;
> + else if (sysfs_streq(buf, "tai"))
> + clk = CLOCK_TAI;
> + else
> + return -EINVAL;
> +
> + ret = iio_device_set_clock(dev_to_iio_dev(dev), clk);
> + if (ret)
> + return ret;
> +
> + return len;
> +}
> +
> +static DEVICE_ATTR(current_timestamp_clock, S_IRUGO | S_IWUSR,
> + iio_show_timestamp_clock, iio_store_timestamp_clock);
> +
> static int iio_device_register_sysfs(struct iio_dev *indio_dev)
> {
> int i, ret = 0, attrcount, attrn, attrcount_orig = 0;
> struct iio_dev_attr *p;
> - struct attribute **attr;
> + struct attribute **attr, *clk = NULL;
>
> /* First count elements in any existing group */
> if (indio_dev->info->attrs) {
> @@ -923,16 +1083,25 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
> */
> if (indio_dev->channels)
> for (i = 0; i < indio_dev->num_channels; i++) {
> - ret = iio_device_add_channel_sysfs(indio_dev,
> - &indio_dev
> - ->channels[i]);
> + const struct iio_chan_spec *chan =
> + &indio_dev->channels[i];
> +
> + if (chan->type == IIO_TIMESTAMP)
> + clk = &dev_attr_current_timestamp_clock.attr;
> +
> + ret = iio_device_add_channel_sysfs(indio_dev, chan);
> if (ret < 0)
> goto error_clear_attrs;
> attrcount += ret;
> }
>
> + if (indio_dev->event_interface)
> + clk = &dev_attr_current_timestamp_clock.attr;
> +
> if (indio_dev->name)
> attrcount++;
> + if (clk)
> + attrcount++;
>
> indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1,
> sizeof(indio_dev->chan_attr_group.attrs[0]),
> @@ -953,6 +1122,8 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
> indio_dev->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
> if (indio_dev->name)
> indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
> + if (clk)
> + indio_dev->chan_attr_group.attrs[attrn++] = clk;
>
> indio_dev->groups[indio_dev->groupcounter++] =
> &indio_dev->chan_attr_group;
> diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
> index cae332b..0ebfc92 100644
> --- a/drivers/iio/industrialio-event.c
> +++ b/drivers/iio/industrialio-event.c
> @@ -44,6 +44,11 @@ struct iio_event_interface {
> struct mutex read_lock;
> };
>
> +bool iio_event_enabled(const struct iio_event_interface *ev_int)
> +{
> + return !!test_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
> +}
> +
> /**
> * iio_push_event() - try to add event to the list for userspace reading
> * @indio_dev: IIO device structure
> @@ -60,7 +65,7 @@ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp)
> int copied;
>
> /* Does anyone care? */
> - if (test_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
> + if (iio_event_enabled(ev_int)) {
>
> ev.id = ev_code;
> ev.timestamp = timestamp;
> @@ -180,8 +185,14 @@ int iio_event_getfd(struct iio_dev *indio_dev)
> if (ev_int == NULL)
> return -ENODEV;
>
> - if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags))
> - return -EBUSY;
> + fd = mutex_lock_interruptible(&indio_dev->mlock);
> + if (fd)
> + return fd;
> +
> + if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
> + fd = -EBUSY;
> + goto unlock;
> + }
>
> iio_device_get(indio_dev);
>
> @@ -194,6 +205,8 @@ int iio_event_getfd(struct iio_dev *indio_dev)
> kfifo_reset_out(&ev_int->det_events);
> }
>
> +unlock:
> + mutex_unlock(&indio_dev->mlock);
> return fd;
> }
>
> diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
> index ae2806a..cf93717 100644
> --- a/drivers/iio/industrialio-trigger.c
> +++ b/drivers/iio/industrialio-trigger.c
> @@ -251,7 +251,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
> irqreturn_t iio_pollfunc_store_time(int irq, void *p)
> {
> struct iio_poll_func *pf = p;
> - pf->timestamp = iio_get_time_ns();
> + pf->timestamp = iio_get_time_ns(pf->indio_dev);
> return IRQ_WAKE_THREAD;
> }
> EXPORT_SYMBOL(iio_pollfunc_store_time);
> diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c
> index 53201d9..f0b47c5 100644
> --- a/drivers/iio/light/acpi-als.c
> +++ b/drivers/iio/light/acpi-als.c
> @@ -118,7 +118,7 @@ static void acpi_als_notify(struct acpi_device *device, u32 event)
> struct iio_dev *indio_dev = acpi_driver_data(device);
> struct acpi_als *als = iio_priv(indio_dev);
> s32 *buffer = als->evt_buffer;
> - s64 time_ns = iio_get_time_ns();
> + s64 time_ns = iio_get_time_ns(indio_dev);
> s32 val;
> int ret;
>
> diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c
> index 09ad5f1..0113fc8 100644
> --- a/drivers/iio/light/adjd_s311.c
> +++ b/drivers/iio/light/adjd_s311.c
> @@ -118,7 +118,7 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p)
> struct iio_poll_func *pf = p;
> struct iio_dev *indio_dev = pf->indio_dev;
> struct adjd_s311_data *data = iio_priv(indio_dev);
> - s64 time_ns = iio_get_time_ns();
> + s64 time_ns = iio_get_time_ns(indio_dev);
> int i, j = 0;
>
> int ret = adjd_s311_req_data(indio_dev);
> diff --git a/drivers/iio/light/apds9300.c b/drivers/iio/light/apds9300.c
> index e1b9fa5..649b26f 100644
> --- a/drivers/iio/light/apds9300.c
> +++ b/drivers/iio/light/apds9300.c
> @@ -396,7 +396,7 @@ static irqreturn_t apds9300_interrupt_handler(int irq, void *private)
> IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(dev_info));
>
> apds9300_clear_intr(data);
>
> diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c
> index f6a07dc..42ef6cf 100644
> --- a/drivers/iio/light/apds9960.c
> +++ b/drivers/iio/light/apds9960.c
> @@ -801,7 +801,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
> IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> regmap_write(data->regmap, APDS9960_REG_CICLEAR, 1);
> }
>
> @@ -810,7 +810,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
> IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> regmap_write(data->regmap, APDS9960_REG_PICLEAR, 1);
> }
>
> diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
> index c8d7b5e..9d66e89 100644
> --- a/drivers/iio/light/cm36651.c
> +++ b/drivers/iio/light/cm36651.c
> @@ -268,7 +268,7 @@ static irqreturn_t cm36651_irq_handler(int irq, void *data)
> CM36651_CMD_READ_RAW_PROXIMITY,
> IIO_EV_TYPE_THRESH, ev_dir);
>
> - iio_push_event(indio_dev, ev_code, iio_get_time_ns());
> + iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
>
> return IRQ_HANDLED;
> }
> diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
> index 6d41086..f558a2b 100644
> --- a/drivers/iio/light/gp2ap020a00f.c
> +++ b/drivers/iio/light/gp2ap020a00f.c
> @@ -851,7 +851,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
> GP2AP020A00F_SCAN_MODE_PROXIMITY,
> IIO_EV_TYPE_ROC,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> } else {
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(
> @@ -859,7 +859,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
> GP2AP020A00F_SCAN_MODE_PROXIMITY,
> IIO_EV_TYPE_ROC,
> IIO_EV_DIR_FALLING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
> }
>
> @@ -925,7 +925,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
> IIO_MOD_LIGHT_CLEAR,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
>
> if (test_bit(GP2AP020A00F_FLAG_ALS_FALLING_EV, &priv->flags)) {
> @@ -939,7 +939,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
> IIO_MOD_LIGHT_CLEAR,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_FALLING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
> }
>
> diff --git a/drivers/iio/light/isl29125.c b/drivers/iio/light/isl29125.c
> index e2945a2..67ccc5e 100644
> --- a/drivers/iio/light/isl29125.c
> +++ b/drivers/iio/light/isl29125.c
> @@ -189,7 +189,7 @@ static irqreturn_t isl29125_trigger_handler(int irq, void *p)
> }
>
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
> index e56937c..f409c20 100644
> --- a/drivers/iio/light/lm3533-als.c
> +++ b/drivers/iio/light/lm3533-als.c
> @@ -267,7 +267,7 @@ static irqreturn_t lm3533_als_isr(int irq, void *dev_id)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> out:
> return IRQ_HANDLED;
> }
> diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
> index 6bf89d8..3afc53a 100644
> --- a/drivers/iio/light/ltr501.c
> +++ b/drivers/iio/light/ltr501.c
> @@ -1256,7 +1256,8 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
> buf[j++] = psdata & LTR501_PS_DATA_MASK;
> }
>
> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> @@ -1282,14 +1283,14 @@ static irqreturn_t ltr501_interrupt_handler(int irq, void *private)
> IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> if (status & LTR501_STATUS_PS_INTR)
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> return IRQ_HANDLED;
> }
> diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
> index b776c8e..78c9b3a 100644
> --- a/drivers/iio/light/opt3001.c
> +++ b/drivers/iio/light/opt3001.c
> @@ -713,13 +713,13 @@ static irqreturn_t opt3001_irq(int irq, void *_iio)
> IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(iio));
> if (ret & OPT3001_CONFIGURATION_FL)
> iio_push_event(iio,
> IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_FALLING),
> - iio_get_time_ns());
> + iio_get_time_ns(iio));
> } else if (ret & OPT3001_CONFIGURATION_CRF) {
> ret = i2c_smbus_read_word_swapped(opt->client, OPT3001_RESULT);
> if (ret < 0) {
> diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
> index 42d334b..b48641d 100644
> --- a/drivers/iio/light/stk3310.c
> +++ b/drivers/iio/light/stk3310.c
> @@ -529,7 +529,7 @@ static irqreturn_t stk3310_irq_handler(int irq, void *private)
> struct iio_dev *indio_dev = private;
> struct stk3310_data *data = iio_priv(indio_dev);
>
> - data->timestamp = iio_get_time_ns();
> + data->timestamp = iio_get_time_ns(indio_dev);
>
> return IRQ_WAKE_THREAD;
> }
> diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
> index f90f8c5..936e764 100644
> --- a/drivers/iio/light/tcs3414.c
> +++ b/drivers/iio/light/tcs3414.c
> @@ -217,7 +217,7 @@ static irqreturn_t tcs3414_trigger_handler(int irq, void *p)
> }
>
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
> index 1b530bf..95519a3 100644
> --- a/drivers/iio/light/tcs3472.c
> +++ b/drivers/iio/light/tcs3472.c
> @@ -204,7 +204,7 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p)
> }
>
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
> index 12731d6..27dbfdd 100644
> --- a/drivers/iio/light/tsl2563.c
> +++ b/drivers/iio/light/tsl2563.c
> @@ -630,7 +630,7 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_EITHER),
> - iio_get_time_ns());
> + iio_get_time_ns(dev_info));
>
> /* clear the interrupt and push the event */
> i2c_smbus_write_byte(chip->client, TSL2563_CMD | TSL2563_CLEARINT);
> diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c
> index 45bc2f7..20c40f7 100644
> --- a/drivers/iio/light/us5182d.c
> +++ b/drivers/iio/light/us5182d.c
> @@ -833,7 +833,7 @@ static irqreturn_t us5182d_irq_thread_handler(int irq, void *private)
> dir = ret & US5182D_CFG0_PROX ? IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
> ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, IIO_EV_TYPE_THRESH, dir);
>
> - iio_push_event(indio_dev, ev, iio_get_time_ns());
> + iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
>
> ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG0,
> ret & ~US5182D_CFG0_PX_IRQ);
> diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
> index 77882b4..ba3e2a3 100644
> --- a/drivers/iio/magnetometer/hmc5843_core.c
> +++ b/drivers/iio/magnetometer/hmc5843_core.c
> @@ -451,7 +451,7 @@ static irqreturn_t hmc5843_trigger_handler(int irq, void *p)
> goto done;
>
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c
> index 261d517..f2be4a0 100644
> --- a/drivers/iio/magnetometer/mag3110.c
> +++ b/drivers/iio/magnetometer/mag3110.c
> @@ -261,7 +261,7 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p)
> }
>
> iio_push_to_buffers_with_timestamp(indio_dev, buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
> index 01b2e0b..6392d7b 100644
> --- a/drivers/iio/pressure/mpl3115.c
> +++ b/drivers/iio/pressure/mpl3115.c
> @@ -171,7 +171,7 @@ static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
> mutex_unlock(&data->lock);
>
> iio_push_to_buffers_with_timestamp(indio_dev, buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> done:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c
> index 37dbc04..8bc178b 100644
> --- a/drivers/iio/pressure/ms5611_core.c
> +++ b/drivers/iio/pressure/ms5611_core.c
> @@ -224,7 +224,8 @@ static irqreturn_t ms5611_trigger_handler(int irq, void *p)
> if (ret < 0)
> goto err;
>
> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
> + iio_get_time_ns(indio_dev));
>
> err:
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
> index 4f502386..b216220 100644
> --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
> +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
> @@ -244,7 +244,7 @@ static irqreturn_t lidar_trigger_handler(int irq, void *private)
> ret = lidar_get_measurement(data, data->buffer);
> if (!ret) {
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> } else if (ret != -EINVAL) {
> dev_err(&data->client->dev, "cannot read LIDAR measurement");
> }
> diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
> index 66cd09a..1d74b3a 100644
> --- a/drivers/iio/proximity/sx9500.c
> +++ b/drivers/iio/proximity/sx9500.c
> @@ -492,7 +492,7 @@ static void sx9500_push_events(struct iio_dev *indio_dev)
> dir = new_prox ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
> ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
> IIO_EV_TYPE_THRESH, dir);
> - iio_push_event(indio_dev, ev, iio_get_time_ns());
> + iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
> data->prox_stat[chan] = new_prox;
> }
> }
> @@ -669,7 +669,7 @@ static irqreturn_t sx9500_trigger_handler(int irq, void *private)
> }
>
> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
>
> out:
> mutex_unlock(&data->mutex);
> diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c
> index 7a6fed3..5c3410a 100644
> --- a/drivers/staging/iio/accel/lis3l02dq_core.c
> +++ b/drivers/staging/iio/accel/lis3l02dq_core.c
> @@ -451,7 +451,7 @@ static irqreturn_t lis3l02dq_event_handler(int irq, void *private)
> struct iio_dev *indio_dev = private;
> u8 t;
>
> - s64 timestamp = iio_get_time_ns();
> + s64 timestamp = iio_get_time_ns(indio_dev);
>
> lis3l02dq_spi_read_reg_8(indio_dev,
> LIS3L02DQ_REG_WAKE_UP_SRC_ADDR,
> diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
> index a8f533a..cff7e4a 100644
> --- a/drivers/staging/iio/accel/sca3000_core.c
> +++ b/drivers/staging/iio/accel/sca3000_core.c
> @@ -774,7 +774,7 @@ static irqreturn_t sca3000_event_handler(int irq, void *private)
> struct iio_dev *indio_dev = private;
> struct sca3000_state *st = iio_priv(indio_dev);
> int ret, val;
> - s64 last_timestamp = iio_get_time_ns();
> + s64 last_timestamp = iio_get_time_ns(indio_dev);
>
> /*
> * Could lead if badly timed to an extra read of status reg,
> diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
> index 62e5eca..69fa4eb 100644
> --- a/drivers/staging/iio/adc/ad7280a.c
> +++ b/drivers/staging/iio/adc/ad7280a.c
> @@ -705,7 +705,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
> IIO_EV_DIR_RISING,
> IIO_EV_TYPE_THRESH,
> 0, 0, 0),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> else if (((channels[i] >> 11) & 0xFFF) <=
> st->cell_threshlow)
> iio_push_event(indio_dev,
> @@ -715,7 +715,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
> IIO_EV_DIR_FALLING,
> IIO_EV_TYPE_THRESH,
> 0, 0, 0),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> } else {
> if (((channels[i] >> 11) & 0xFFF) >= st->aux_threshhigh)
> iio_push_event(indio_dev,
> @@ -724,7 +724,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> else if (((channels[i] >> 11) & 0xFFF) <=
> st->aux_threshlow)
> iio_push_event(indio_dev,
> @@ -733,7 +733,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_FALLING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
> }
>
> diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
> index a6f8eb1..0572df9 100644
> --- a/drivers/staging/iio/adc/ad7606_ring.c
> +++ b/drivers/staging/iio/adc/ad7606_ring.c
> @@ -77,7 +77,8 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
> goto done;
> }
>
> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
> + iio_get_time_ns(indio_dev));
> done:
> gpio_set_value(st->pdata->gpio_convst, 0);
> iio_trigger_notify_done(indio_dev->trig);
> diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
> index ac3735c..5e8115b 100644
> --- a/drivers/staging/iio/adc/ad7816.c
> +++ b/drivers/staging/iio/adc/ad7816.c
> @@ -253,7 +253,8 @@ static const struct attribute_group ad7816_attribute_group = {
>
> static irqreturn_t ad7816_event_handler(int irq, void *private)
> {
> - iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI, iio_get_time_ns());
> + iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI,
> + iio_get_time_ns((struct iio_dev *)private));
> return IRQ_HANDLED;
> }
>
> diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
> index 3adc451..f4ea954 100644
> --- a/drivers/staging/iio/addac/adt7316.c
> +++ b/drivers/staging/iio/addac/adt7316.c
> @@ -1755,7 +1755,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
> if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
> stat1 &= 0x1F;
>
> - time = iio_get_time_ns();
> + time = iio_get_time_ns(indio_dev);
> if (stat1 & BIT(0))
> iio_push_event(indio_dev,
> IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
> @@ -1807,7 +1807,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
> 0,
> IIO_EV_TYPE_THRESH,
> IIO_EV_DIR_RISING),
> - iio_get_time_ns());
> + iio_get_time_ns(indio_dev));
> }
>
> return IRQ_HANDLED;
> diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
> index f6b9a10..5578a07 100644
> --- a/drivers/staging/iio/cdc/ad7150.c
> +++ b/drivers/staging/iio/cdc/ad7150.c
> @@ -493,7 +493,7 @@ static irqreturn_t ad7150_event_handler(int irq, void *private)
> struct iio_dev *indio_dev = private;
> struct ad7150_chip_info *chip = iio_priv(indio_dev);
> u8 int_status;
> - s64 timestamp = iio_get_time_ns();
> + s64 timestamp = iio_get_time_ns(indio_dev);
> int ret;
>
> ret = i2c_smbus_read_byte_data(chip->client, AD7150_STATUS);
> diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
> index 2a62718..d35b503 100644
> --- a/drivers/staging/iio/light/tsl2x7x_core.c
> +++ b/drivers/staging/iio/light/tsl2x7x_core.c
> @@ -1524,7 +1524,7 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
> {
> struct iio_dev *indio_dev = private;
> struct tsl2X7X_chip *chip = iio_priv(indio_dev);
> - s64 timestamp = iio_get_time_ns();
> + s64 timestamp = iio_get_time_ns(indio_dev);
> int ret;
> u8 value;
>
> diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
> index b2b1677..8b1db3a 100644
> --- a/include/linux/iio/iio.h
> +++ b/include/linux/iio/iio.h
> @@ -281,13 +281,8 @@ static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
> }, \
> }
>
> -/**
> - * iio_get_time_ns() - utility function to get a time stamp for events etc
> - **/
> -static inline s64 iio_get_time_ns(void)
> -{
> - return ktime_get_real_ns();
> -}
> +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 */
> #define INDIO_DIRECT_MODE 0x01
> @@ -466,6 +461,7 @@ struct iio_buffer_setup_ops {
> * @chan_attr_group: [INTERN] group for all attrs in base directory
> * @name: [DRIVER] name of the device.
> * @info: [DRIVER] callbacks and constant info from driver
> + * @clock_id: [INTERN] timestamping clock posix identifier
> * @info_exist_lock: [INTERN] lock to prevent use during removal
> * @setup_ops: [DRIVER] callbacks to call before and after buffer
> * enable/disable
> @@ -506,6 +502,7 @@ struct iio_dev {
> struct attribute_group chan_attr_group;
> const char *name;
> const struct iio_info *info;
> + clockid_t clock_id;
> struct mutex info_exist_lock;
> const struct iio_buffer_setup_ops *setup_ops;
> struct cdev chrdev;
> @@ -532,7 +529,7 @@ extern struct bus_type iio_bus_type;
>
> /**
> * iio_device_put() - reference counted deallocation of struct device
> - * @indio_dev: IIO device structure containing the device
> + * @indio_dev: IIO device structure containing the device
> **/
> static inline void iio_device_put(struct iio_dev *indio_dev)
> {
> @@ -541,6 +538,15 @@ static inline void iio_device_put(struct iio_dev *indio_dev)
> }
>
> /**
> + * iio_device_get_clock() - Retrieve current timestamping clock for the device
> + * @indio_dev: IIO device structure containing the device
> + */
> +static inline clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
> +{
> + return indio_dev->clock_id;
> +}
> +
> +/**
> * dev_to_iio_dev() - Get IIO device struct from a device struct
> * @dev: The device embedded in the IIO device
> *
> --
> 2.1.4
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v5 2/2] iio:core: timestamping clock selection support
2016-03-10 7:06 ` maitysanchayan
@ 2016-06-30 19:13 ` Jonathan Cameron
0 siblings, 0 replies; 5+ messages in thread
From: Jonathan Cameron @ 2016-06-30 19:13 UTC (permalink / raw)
To: maitysanchayan, Gregor Boirie; +Cc: Stefan Agner, linux-iio
On 10/03/16 07:06, maitysanchayan@gmail.com wrote:
> Hello Gregor,
>
> On 16-03-09 19:05:49, Gregor Boirie wrote:
>> 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 <gregor.boirie@parrot.com>
Applied with the obvious updates to new drivers to the togreg
branch of iio.git. Sorry this one took so long. I thought I'd
applied it ages ago!
Thanks,
Jonathan
>> ---
>> Documentation/ABI/testing/sysfs-bus-iio | 7 +
>> Documentation/DocBook/iio.tmpl | 2 +-
>> drivers/iio/accel/bma180.c | 2 +-
>> drivers/iio/accel/bmc150-accel-core.c | 4 +-
>> drivers/iio/accel/kxcjk-1013.c | 2 +-
>> drivers/iio/accel/mma7455_core.c | 3 +-
>> drivers/iio/accel/mma8452.c | 4 +-
>> drivers/iio/accel/mma9551.c | 2 +-
>> drivers/iio/accel/mma9553.c | 2 +-
>> drivers/iio/adc/ad7291.c | 2 +-
>> drivers/iio/adc/ad7298.c | 2 +-
>> drivers/iio/adc/ad7476.c | 2 +-
>> drivers/iio/adc/ad7887.c | 2 +-
>> drivers/iio/adc/ad7923.c | 2 +-
>> drivers/iio/adc/ad799x.c | 4 +-
>> drivers/iio/adc/cc10001_adc.c | 2 +-
>> drivers/iio/adc/hi8435.c | 2 +-
>> drivers/iio/adc/ina2xx-adc.c | 6 +-
>> drivers/iio/adc/max1363.c | 5 +-
>> drivers/iio/adc/ti-ads1015.c | 3 +-
>> drivers/iio/adc/vf610_adc.c | 3 +-
>
> Thanks for implementing this.
>
> For what it's worth, I tested this on Colibri Vybrid VF61 for a while and
> all seems to work fine.
>
> So with the testing for vf610_adc driver
>
> Acked-by: Sanchayan Maity <maitysanchayan@gmail.com>
>
> Regards,
> Sanchayan.
>
>> drivers/iio/adc/xilinx-xadc-events.c | 4 +-
>> drivers/iio/chemical/atlas-ph-sensor.c | 2 +-
>> drivers/iio/dac/ad5421.c | 6 +-
>> drivers/iio/dac/ad5504.c | 2 +-
>> drivers/iio/dummy/iio_simple_dummy_buffer.c | 3 +-
>> drivers/iio/dummy/iio_simple_dummy_events.c | 2 +-
>> drivers/iio/gyro/bmg160_core.c | 30 ++--
>> drivers/iio/iio_core.h | 3 +
>> drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 2 +-
>> drivers/iio/industrialio-core.c | 179 +++++++++++++++++++++-
>> drivers/iio/industrialio-event.c | 19 ++-
>> drivers/iio/industrialio-trigger.c | 2 +-
>> drivers/iio/light/acpi-als.c | 2 +-
>> drivers/iio/light/adjd_s311.c | 2 +-
>> drivers/iio/light/apds9300.c | 2 +-
>> drivers/iio/light/apds9960.c | 4 +-
>> drivers/iio/light/cm36651.c | 2 +-
>> drivers/iio/light/gp2ap020a00f.c | 8 +-
>> drivers/iio/light/isl29125.c | 2 +-
>> drivers/iio/light/lm3533-als.c | 2 +-
>> drivers/iio/light/ltr501.c | 7 +-
>> dr> drivers/iio/light/stk3310.c | 2 +-
>> drivers/iio/light/tcs3414.c | 2 +-
>> drivers/iio/light/tcs3472.c | 2 +-
>> drivers/iio/light/tsl2563.c | 2 +-
>> drivers/iio/light/us5182d.c | 2 +-
>> drivers/iio/magnetometer/hmc5843_core.c | 2 +-
>> drivers/iio/magnetometer/mag3110.c | 2 +-
>> drivers/iio/pressure/mpl3115.c | 2 +-
>> drivers/iio/pressure/ms5611_core.c | 3 +-
>> drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 2 +-
>> drivers/iio/proximity/sx9500.c | 4 +-
>> drivers/staging/iio/accel/lis3l02dq_core.c | 2 +-
>> drivers/staging/iio/accel/sca3000_core.c | 2 +-
>> drivers/staging/iio/adc/ad7280a.c | 8 +-
>> drivers/staging/iio/adc/ad7606_ring.c | 3 +-
>> drivers/staging/iio/adc/ad7816.c | 3 +-
>> drivers/staging/iio/addac/adt7316.c | 4 +-
>> drivers/staging/iio/cdc/ad7150.c | 2 +-
>> drivers/staging/iio/light/tsl2x7x_core.c | 2 +-
>> include/linux/iio/iio.h | 22 ++-
>> 63 files changed, 317 insertions(+), 108 deletions(-)
>>
>> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
>> index 3c66248..c374b21 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 f525bf5..e2ab6a1 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;
>> }
>>
>> diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
>> index f04b884..e3f88ba 100644
>> --- a/drivers/iio/accel/bma180.c
>> +++ b/drivers/iio/accel/bma180.c
>> @@ -654,7 +654,7 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p)
>> struct iio_poll_func *pf = p;
>> struct iio_dev *indio_dev = pf->indio_dev;
>> struct bma180_data *data = iio_priv(indio_dev);
>> - int64_t time_ns = iio_get_time_ns();
>> + s64 time_ns = iio_get_time_ns(indio_dev);
>> int bit, ret, i = 0;
>>
>> mutex_lock(&data->mutex);
>> diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
>> index c73331f7..0529461 100644
>> --- a/drivers/iio/accel/bmc150-accel-core.c
>> +++ b/drivers/iio/accel/bmc150-accel-core.c
>> @@ -892,7 +892,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
>> */
>> if (!irq) {
>> data->old_timestamp = data->timestamp;
>> - data->timestamp = iio_get_time_ns();
>> + data->timestamp = iio_get_time_ns(indio_dev);
>> }
>>
>> /*
>> @@ -1295,7 +1295,7 @@ static irqreturn_t bmc150_accel_irq_handler(int irq, void *private)
>> int i;
>>
>> data->old_timestamp = data->timestamp;
>> - data->timestamp = iio_get_time_ns();
>> + data->timestamp = iio_get_time_ns(indio_dev);
>>
>> for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
>> if (data->triggers[i].enabled) {
>> diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
>> index edec1d0..36539a2 100644
>> --- a/drivers/iio/accel/kxcjk-1013.c
>> +++ b/drivers/iio/accel/kxcjk-1013.c
>> @@ -1131,7 +1131,7 @@ static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> struct kxcjk1013_data *data = iio_priv(indio_dev);
>>
>> - data->timestamp = iio_get_time_ns();
>> + data->timestamp = iio_get_time_ns(indio_dev);
>>
>> if (data->dready_trigger_on)
>> iio_trigger_poll(data->dready_trig);
>> diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c
>> index c633cc2..91e2c04 100644
>> --- a/drivers/iio/accel/mma7455_core.c
>> +++ b/drivers/iio/accel/mma7455_core.c
>> @@ -97,7 +97,8 @@ static irqreturn_t mma7455_trigger_handler(int irq, void *p)
>> if (ret)
>> goto done;
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
>> index 5ca0d16..b9ca5ad 100644
>> --- a/drivers/iio/accel/mma8452.c
>> +++ b/drivers/iio/accel/mma8452.c
>> @@ -783,7 +783,7 @@ static int mma8452_write_event_config(struct iio_dev *indio_dev,
>> static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
>> {
>> struct mma8452_data *data = iio_priv(indio_dev);
>> - s64 ts = iio_get_time_ns();
>> + s64 ts = iio_get_time_ns(indio_dev);
>> int src;
>>
>> src = i2c_smbus_read_byte_data(data->client, data->chip_info->ev_src);
>> @@ -863,7 +863,7 @@ static irqreturn_t mma8452_trigger_handler(int irq, void *p)
>> goto done;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
>> index d899a4d..bf27044 100644
>> --- a/drivers/iio/accel/mma9551.c
>> +++ b/drivers/iio/accel/mma9551.c
>> @@ -391,7 +391,7 @@ static irqreturn_t mma9551_event_handler(int irq, void *private)
>> iio_push_event(indio_dev,
>> IIO_MOD_EVENT_CODE(IIO_INCLI, 0, (mma_axis + 1),
>> IIO_EV_TYPE_ROC, IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> out:
>> mutex_unlock(&data->mutex);
>> diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
>> index fa7d362..55b4868 100644
>> --- a/drivers/iio/accel/mma9553.c
>> +++ b/drivers/iio/accel/mma9553.c
>> @@ -1002,7 +1002,7 @@ static irqreturn_t mma9553_irq_handler(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> struct mma9553_data *data = iio_priv(indio_dev);
>>
>> - data->timestamp = iio_get_time_ns();
>> + data->timestamp = iio_get_time_ns(indio_dev);
>> /*
>> * Since we only configure the interrupt pin when an
>> * event is enabled, we are sure we have at least
>> diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
>> index c0eabf1..0376309 100644
>> --- a/drivers/iio/adc/ad7291.c
>> +++ b/drivers/iio/adc/ad7291.c
>> @@ -115,7 +115,7 @@ static irqreturn_t ad7291_event_handler(int irq, void *private)
>> u16 t_status, v_status;
>> u16 command;
>> int i;
>> - s64 timestamp = iio_get_time_ns();
>> + s64 timestamp = iio_get_time_ns(indio_dev);
>>
>> if (ad7291_i2c_read(chip, AD7291_T_ALERT_STATUS, &t_status))
>> return IRQ_HANDLED;
>> diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
>> index 62bb8f7..5dd0742 100644
>> --- a/drivers/iio/adc/ad7298.c
>> +++ b/drivers/iio/adc/ad7298.c
>> @@ -163,7 +163,7 @@ static irqreturn_t ad7298_trigger_handler(int irq, void *p)
>> goto done;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
>> index be85c2a..6a14985 100644
>> --- a/drivers/iio/adc/ad7476.c
>> +++ b/drivers/iio/adc/ad7476.c
>> @@ -70,7 +70,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p)
>> goto done;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, st->data,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>>
>> diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
>> index 2d3c397..361fae0 100644
>> --- a/drivers/iio/adc/ad7887.c
>> +++ b/drivers/iio/adc/ad7887.c
>> @@ -122,7 +122,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
>> goto done;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, st->data,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>>
>> diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
>> index 45e29cc..2a82b9e 100644
>> --- a/drivers/iio/adc/ad7923.c
>> +++ b/drivers/iio/adc/ad7923.c
>> @@ -181,7 +181,7 @@ static irqreturn_t ad7923_trigger_handler(int irq, void *p)
>> goto done;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
>> index 01d7158..ec9dccb 100644
>> --- a/drivers/iio/adc/ad799x.c
>> +++ b/drivers/iio/adc/ad799x.c
>> @@ -212,7 +212,7 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p)
>> goto out;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> out:
>> iio_trigger_notify_done(indio_dev->trig);
>>
>> @@ -508,7 +508,7 @@ static irqreturn_t ad799x_event_handler(int irq, void *private)
>> (i >> 1),
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_FALLING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>>
>> done:
>> diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
>> index 8254f52..91636c0 100644
>> --- a/drivers/iio/adc/cc10001_adc.c
>> +++ b/drivers/iio/adc/cc10001_adc.c
>> @@ -186,7 +186,7 @@ done:
>>
>> if (!sample_invalid)
>> iio_push_to_buffers_with_timestamp(indio_dev, data,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> iio_trigger_notify_done(indio_dev->trig);
>>
>> return IRQ_HANDLED;
>> diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
>> index c73c6c6..c62bdb0 100644
>> --- a/drivers/iio/adc/hi8435.c
>> +++ b/drivers/iio/adc/hi8435.c
>> @@ -400,7 +400,7 @@ static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val)
>> iio_push_event(idev,
>> IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i,
>> IIO_EV_TYPE_THRESH, dir),
>> - iio_get_time_ns());
>> + iio_get_time_ns(idev));
>> }
>> }
>>
>> diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
>> index 65909d5..ee1baf0 100644
>> --- a/drivers/iio/adc/ina2xx-adc.c
>> +++ b/drivers/iio/adc/ina2xx-adc.c
>> @@ -443,7 +443,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
>> s64 time_a, time_b;
>> unsigned int alert;
>>
>> - time_a = iio_get_time_ns();
>> + time_a = iio_get_time_ns(indio_dev);
>>
>> /*
>> * Because the timer thread and the chip conversion clock
>> @@ -482,7 +482,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
>> data[i++] = val;
>> }
>>
>> - time_b = iio_get_time_ns();
>> + time_b = iio_get_time_ns(indio_dev);
>>
>> iio_push_to_buffers_with_timestamp(indio_dev,
>> (unsigned int *)data, time_a);
>> @@ -532,7 +532,7 @@ static int ina2xx_buffer_enable(struct iio_dev *indio_dev)
>> dev_dbg(&indio_dev->dev, "Async readout mode: %d\n",
>> chip->allow_async_readout);
>>
>> - chip->prev_ns = iio_get_time_ns();
>> + chip->prev_ns = iio_get_time_ns(indio_dev);
>>
>> chip->task = kthread_run(ina2xx_capture_thread, (void *)indio_dev,
>> "%s:%d-%uus", indio_dev->name, indio_dev->id,
>> diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
>> index 929508e..0a4682b 100644
>> --- a/drivers/iio/adc/max1363.c
>> +++ b/drivers/iio/adc/max1363.c
>> @@ -788,7 +788,7 @@ static irqreturn_t max1363_event_handler(int irq, void *private)
>> {
>> struct iio_dev *indio_dev = private;
>> struct max1363_state *st = iio_priv(indio_dev);
>> - s64 timestamp = iio_get_time_ns();
>> + s64 timestamp = iio_get_time_ns(indio_dev);
>> unsigned long mask, loc;
>> u8 rx;
>> u8 tx[2] = { st->setupbyte,
>> @@ -1506,7 +1506,8 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
>> if (b_sent < 0)
>> goto done_free;
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, rxbuf, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, rxbuf,
>> + iio_get_time_ns(indio_dev));
>>
>> done_free:
>> kfree(rxbuf);
>> diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
>> index 73cbf0b..b5f3eb9 100644
>> --- a/drivers/iio/adc/ti-ads1015.c
>> +++ b/drivers/iio/adc/ti-ads1015.c
>> @@ -225,7 +225,8 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p)
>> buf[0] = res;
>> mutex_unlock(&data->lock);
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
>> + iio_get_time_ns(indio_dev));
>>
>> err:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
>> index b10f629..33f80a9 100644
>> --- a/drivers/iio/adc/vf610_adc.c
>> +++ b/drivers/iio/adc/vf610_adc.c
>> @@ -594,7 +594,8 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
>> if (iio_buffer_enabled(indio_dev)) {
>> info->buffer[0] = info->value;
>> iio_push_to_buffers_with_timestamp(indio_dev,
>> - info->buffer, iio_get_time_ns());
>> + info->buffer,
>> + iio_get_time_ns(indio_dev));
>> iio_trigger_notify_done(indio_dev->trig);
>> } else
>> complete(&info->completion);
>> diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
>> index edcf3aa..6d5c2a6 100644
>> --- a/drivers/iio/adc/xilinx-xadc-events.c
>> +++ b/drivers/iio/adc/xilinx-xadc-events.c
>> @@ -46,7 +46,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
>> iio_push_event(indio_dev,
>> IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
>> IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> } else {
>> /*
>> * For other channels we don't know whether it is a upper or
>> @@ -56,7 +56,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
>> iio_push_event(indio_dev,
>> IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
>> IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>> }
>>
>> diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
>> index 62b37cd..be37e24 100644
>> --- a/drivers/iio/chemical/atlas-ph-sensor.c
>> +++ b/drivers/iio/chemical/atlas-ph-sensor.c
>> @@ -183,7 +183,7 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
>>
>> if (!ret)
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> iio_trigger_notify_done(indio_dev->trig);
>>
>> diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
>> index 968712b..559061a 100644
>> --- a/drivers/iio/dac/ad5421.c
>> +++ b/drivers/iio/dac/ad5421.c
>> @@ -242,7 +242,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>>
>> if (events & AD5421_FAULT_UNDER_CURRENT) {
>> @@ -251,7 +251,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_FALLING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>>
>> if (events & AD5421_FAULT_TEMP_OVER_140) {
>> @@ -260,7 +260,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
>> 0,
>> IIO_EV_TYPE_MAG,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>>
>> old_fault = fault;
>> diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
>> index 4e4c20d..788b3d6 100644
>> --- a/drivers/iio/dac/ad5504.c
>> +++ b/drivers/iio/dac/ad5504.c
>> @@ -223,7 +223,7 @@ static irqreturn_t ad5504_event_handler(int irq, void *private)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns((struct iio_dev *)private));
>>
>> return IRQ_HANDLED;
>> }
>> diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
>> index cf44a6f..b383892 100644
>> --- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
>> +++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
>> @@ -85,7 +85,8 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
>> }
>> }
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, data, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, data,
>> + iio_get_time_ns(indio_dev));
>>
>> kfree(data);
>>
>> diff --git a/drivers/iio/dummy/iio_simple_dummy_events.c b/drivers/iio/dummy/iio_simple_dummy_events.c
>> index 6eb600f..ed63ffd 100644
>> --- a/drivers/iio/dummy/iio_simple_dummy_events.c
>> +++ b/drivers/iio/dummy/iio_simple_dummy_events.c
>> @@ -158,7 +158,7 @@ static irqreturn_t iio_simple_dummy_get_timestamp(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> struct iio_dummy_state *st = iio_priv(indio_dev);
>>
>> - st->event_timestamp = iio_get_time_ns();
>> + st->event_timestamp = iio_get_time_ns(indio_dev);
>> return IRQ_WAKE_THREAD;
>> }
>>
>> diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c
>> index bbce3b0..4cefcc0 100644
>> --- a/drivers/iio/gyro/bmg160_core.c
>> +++ b/drivers/iio/gyro/bmg160_core.c
>> @@ -884,25 +884,25 @@ static irqreturn_t bmg160_event_handler(int irq, void *private)
>>
>> if (val & BMG160_ANY_MOTION_BIT_X)
>> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
>> - 0,
>> - IIO_MOD_X,
>> - IIO_EV_TYPE_ROC,
>> - dir),
>> - iio_get_time_ns());
>> + 0,
>> + IIO_MOD_X,
>> + IIO_EV_TYPE_ROC,
>> + dir),
>> + iio_get_time_ns(indio_dev));
>> if (val & BMG160_ANY_MOTION_BIT_Y)
>> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
>> - 0,
>> - IIO_MOD_Y,
>> - IIO_EV_TYPE_ROC,
>> - dir),
>> - iio_get_time_ns());
>> + 0,
>> + IIO_MOD_Y,
>> + IIO_EV_TYPE_ROC,
>> + dir),
>> + iio_get_time_ns(indio_dev));
>> if (val & BMG160_ANY_MOTION_BIT_Z)
>> iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
>> - 0,
>> - IIO_MOD_Z,
>> - IIO_EV_TYPE_ROC,
>> - dir),
>> - iio_get_time_ns());
>> + 0,
>> + IIO_MOD_Z,
>> + IIO_EV_TYPE_ROC,
>> + dir),
>> + iio_get_time_ns(indio_dev));
>>
>> ack_intr_status:
>> if (!data->dready_trigger_on) {
>> diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
>> index 3598835..4c45488 100644
>> --- a/drivers/iio/iio_core.h
>> +++ b/drivers/iio/iio_core.h
>> @@ -79,4 +79,7 @@ void iio_device_unregister_eventset(struct iio_dev *indio_dev);
>> void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
>> int iio_event_getfd(struct iio_dev *indio_dev);
>>
>> +struct iio_event_interface;
>> +bool iio_event_enabled(const struct iio_event_interface *ev_int);
>> +
>> #endif
>> diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
>> index d070062..3a9f3ea 100644
>> --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
>> +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
>> @@ -107,7 +107,7 @@ irqreturn_t inv_mpu6050_irq_handler(int irq, void *p)
>> struct inv_mpu6050_state *st = iio_priv(indio_dev);
>> s64 timestamp;
>>
>> - timestamp = iio_get_time_ns();
>> + timestamp = iio_get_time_ns(indio_dev);
>> kfifo_in_spinlocked(&st->timestamps, ×tamp, 1,
>> &st->time_stamp_lock);
>>
>> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
>> index 70cb7eb..dbaf56b 100644
>> --- a/drivers/iio/industrialio-core.c
>> +++ b/drivers/iio/industrialio-core.c
>> @@ -174,6 +174,86 @@ ssize_t iio_read_const_attr(struct device *dev,
>> }
>> EXPORT_SYMBOL(iio_read_const_attr);
>>
>> +static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
>> +{
>> + int ret;
>> + const struct iio_event_interface *ev_int = indio_dev->event_interface;
>> +
>> + ret = mutex_lock_interruptible(&indio_dev->mlock);
>> + if (ret)
>> + return ret;
>> + if ((ev_int && iio_event_enabled(ev_int)) ||
>> + iio_buffer_enabled(indio_dev)) {
>> + mutex_unlock(&indio_dev->mlock);
>> + return -EBUSY;
>> + }
>> + indio_dev->clock_id = clock_id;
>> + mutex_unlock(&indio_dev->mlock);
>> +
>> + return 0;
>> +}
>> +
>> +/**
>> + * iio_get_time_ns() - utility function to get a time stamp for events etc
>> + * @indio_dev: device
>> + */
>> +s64 iio_get_time_ns(const struct iio_dev *indio_dev)
>> +{
>> + struct timespec tp;
>> +
>> + switch (iio_device_get_clock(indio_dev)) {
>> + case CLOCK_REALTIME:
>> + ktime_get_real_ts(&tp);
>> + break;
>> + case CLOCK_MONOTONIC:
>> + ktime_get_ts(&tp);
>> + break;
>> + case CLOCK_MONOTONIC_RAW:
>> + getrawmonotonic(&tp);
>> + break;
>> + case CLOCK_REALTIME_COARSE:
>> + tp = current_kernel_time();
>> + break;
>> + case CLOCK_MONOTONIC_COARSE:
>> + tp = get_monotonic_coarse();
>> + break;
>> + case CLOCK_BOOTTIME:
>> + get_monotonic_boottime(&tp);
>> + break;
>> + case CLOCK_TAI:
>> + timekeeping_clocktai(&tp);
>> + break;
>> + default:
>> + BUG();
>> + }
>> +
>> + return timespec_to_ns(&tp);
>> +}
>> +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;
>> @@ -904,11 +984,91 @@ static ssize_t iio_show_dev_name(struct device *dev,
>>
>> static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
>>
>> +static ssize_t iio_show_timestamp_clock(struct device *dev,
>> + struct device_attribute *attr,
>> + char *buf)
>> +{
>> + const struct iio_dev *indio_dev = dev_to_iio_dev(dev);
>> + const clockid_t clk = iio_device_get_clock(indio_dev);
>> + const char *name;
>> + ssize_t sz;
>> +
>> + switch (clk) {
>> + case CLOCK_REALTIME:
>> + name = "realtime\n";
>> + sz = sizeof("realtime\n");
>> + break;
>> + case CLOCK_MONOTONIC:
>> + name = "monotonic\n";
>> + sz = sizeof("monotonic\n");
>> + break;
>> + case CLOCK_MONOTONIC_RAW:
>> + name = "monotonic_raw\n";
>> + sz = sizeof("monotonic_raw\n");
>> + break;
>> + case CLOCK_REALTIME_COARSE:
>> + name = "realtime_coarse\n";
>> + sz = sizeof("realtime_coarse\n");
>> + break;
>> + case CLOCK_MONOTONIC_COARSE:
>> + name = "monotonic_coarse\n";
>> + sz = sizeof("monotonic_coarse\n");
>> + break;
>> + case CLOCK_BOOTTIME:
>> + name = "boottime\n";
>> + sz = sizeof("boottime\n");
>> + break;
>> + case CLOCK_TAI:
>> + name = "tai\n";
>> + sz = sizeof("tai\n");
>> + break;
>> + default:
>> + BUG();
>> + }
>> +
>> + memcpy(buf, name, sz);
>> + return sz;
>> +}
>> +
>> +static ssize_t iio_store_timestamp_clock(struct device *dev,
>> + struct device_attribute *attr,
>> + const char *buf, size_t len)
>> +{
>> + clockid_t clk;
>> + int ret;
>> +
>> + if (sysfs_streq(buf, "realtime"))
>> + clk = CLOCK_REALTIME;
>> + else if (sysfs_streq(buf, "monotonic"))
>> + clk = CLOCK_MONOTONIC;
>> + else if (sysfs_streq(buf, "monotonic_raw"))
>> + clk = CLOCK_MONOTONIC_RAW;
>> + else if (sysfs_streq(buf, "realtime_coarse"))
>> + clk = CLOCK_REALTIME_COARSE;
>> + else if (sysfs_streq(buf, "monotonic_coarse"))
>> + clk = CLOCK_MONOTONIC_COARSE;
>> + else if (sysfs_streq(buf, "boottime"))
>> + clk = CLOCK_BOOTTIME;
>> + else if (sysfs_streq(buf, "tai"))
>> + clk = CLOCK_TAI;
>> + else
>> + return -EINVAL;
>> +
>> + ret = iio_device_set_clock(dev_to_iio_dev(dev), clk);
>> + if (ret)
>> + return ret;
>> +
>> + return len;
>> +}
>> +
>> +static DEVICE_ATTR(current_timestamp_clock, S_IRUGO | S_IWUSR,
>> + iio_show_timestamp_clock, iio_store_timestamp_clock);
>> +
>> static int iio_device_register_sysfs(struct iio_dev *indio_dev)
>> {
>> int i, ret = 0, attrcount, attrn, attrcount_orig = 0;
>> struct iio_dev_attr *p;
>> - struct attribute **attr;
>> + struct attribute **attr, *clk = NULL;
>>
>> /* First count elements in any existing group */
>> if (indio_dev->info->attrs) {
>> @@ -923,16 +1083,25 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
>> */
>> if (indio_dev->channels)
>> for (i = 0; i < indio_dev->num_channels; i++) {
>> - ret = iio_device_add_channel_sysfs(indio_dev,
>> - &indio_dev
>> - ->channels[i]);
>> + const struct iio_chan_spec *chan =
>> + &indio_dev->channels[i];
>> +
>> + if (chan->type == IIO_TIMESTAMP)
>> + clk = &dev_attr_current_timestamp_clock.attr;
>> +
>> + ret = iio_device_add_channel_sysfs(indio_dev, chan);
>> if (ret < 0)
>> goto error_clear_attrs;
>> attrcount += ret;
>> }
>>
>> + if (indio_dev->event_interface)
>> + clk = &dev_attr_current_timestamp_clock.attr;
>> +
>> if (indio_dev->name)
>> attrcount++;
>> + if (clk)
>> + attrcount++;
>>
>> indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1,
>> sizeof(indio_dev->chan_attr_group.attrs[0]),
>> @@ -953,6 +1122,8 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
>> indio_dev->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
>> if (indio_dev->name)
>> indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
>> + if (clk)
>> + indio_dev->chan_attr_group.attrs[attrn++] = clk;
>>
>> indio_dev->groups[indio_dev->groupcounter++] =
>> &indio_dev->chan_attr_group;
>> diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
>> index cae332b..0ebfc92 100644
>> --- a/drivers/iio/industrialio-event.c
>> +++ b/drivers/iio/industrialio-event.c
>> @@ -44,6 +44,11 @@ struct iio_event_interface {
>> struct mutex read_lock;
>> };
>>
>> +bool iio_event_enabled(const struct iio_event_interface *ev_int)
>> +{
>> + return !!test_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
>> +}
>> +
>> /**
>> * iio_push_event() - try to add event to the list for userspace reading
>> * @indio_dev: IIO device structure
>> @@ -60,7 +65,7 @@ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp)
>> int copied;
>>
>> /* Does anyone care? */
>> - if (test_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
>> + if (iio_event_enabled(ev_int)) {
>>
>> ev.id = ev_code;
>> ev.timestamp = timestamp;
>> @@ -180,8 +185,14 @@ int iio_event_getfd(struct iio_dev *indio_dev)
>> if (ev_int == NULL)
>> return -ENODEV;
>>
>> - if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags))
>> - return -EBUSY;
>> + fd = mutex_lock_interruptible(&indio_dev->mlock);
>> + if (fd)
>> + return fd;
>> +
>> + if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
>> + fd = -EBUSY;
>> + goto unlock;
>> + }
>>
>> iio_device_get(indio_dev);
>>
>> @@ -194,6 +205,8 @@ int iio_event_getfd(struct iio_dev *indio_dev)
>> kfifo_reset_out(&ev_int->det_events);
>> }
>>
>> +unlock:
>> + mutex_unlock(&indio_dev->mlock);
>> return fd;
>> }
>>
>> diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
>> index ae2806a..cf93717 100644
>> --- a/drivers/iio/industrialio-trigger.c
>> +++ b/drivers/iio/industrialio-trigger.c
>> @@ -251,7 +251,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
>> irqreturn_t iio_pollfunc_store_time(int irq, void *p)
>> {
>> struct iio_poll_func *pf = p;
>> - pf->timestamp = iio_get_time_ns();
>> + pf->timestamp = iio_get_time_ns(pf->indio_dev);
>> return IRQ_WAKE_THREAD;
>> }
>> EXPORT_SYMBOL(iio_pollfunc_store_time);
>> diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c
>> index 53201d9..f0b47c5 100644
>> --- a/drivers/iio/light/acpi-als.c
>> +++ b/drivers/iio/light/acpi-als.c
>> @@ -118,7 +118,7 @@ static void acpi_als_notify(struct acpi_device *device, u32 event)
>> struct iio_dev *indio_dev = acpi_driver_data(device);
>> struct acpi_als *als = iio_priv(indio_dev);
>> s32 *buffer = als->evt_buffer;
>> - s64 time_ns = iio_get_time_ns();
>> + s64 time_ns = iio_get_time_ns(indio_dev);
>> s32 val;
>> int ret;
>>
>> diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c
>> index 09ad5f1..0113fc8 100644
>> --- a/drivers/iio/light/adjd_s311.c
>> +++ b/drivers/iio/light/adjd_s311.c
>> @@ -118,7 +118,7 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p)
>> struct iio_poll_func *pf = p;
>> struct iio_dev *indio_dev = pf->indio_dev;
>> struct adjd_s311_data *data = iio_priv(indio_dev);
>> - s64 time_ns = iio_get_time_ns();
>> + s64 time_ns = iio_get_time_ns(indio_dev);
>> int i, j = 0;
>>
>> int ret = adjd_s311_req_data(indio_dev);
>> diff --git a/drivers/iio/light/apds9300.c b/drivers/iio/light/apds9300.c
>> index e1b9fa5..649b26f 100644
>> --- a/drivers/iio/light/apds9300.c
>> +++ b/drivers/iio/light/apds9300.c
>> @@ -396,7 +396,7 @@ static irqreturn_t apds9300_interrupt_handler(int irq, void *private)
>> IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(dev_info));
>>
>> apds9300_clear_intr(data);
>>
>> diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c
>> index f6a07dc..42ef6cf 100644
>> --- a/drivers/iio/light/apds9960.c
>> +++ b/drivers/iio/light/apds9960.c
>> @@ -801,7 +801,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
>> IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> regmap_write(data->regmap, APDS9960_REG_CICLEAR, 1);
>> }
>>
>> @@ -810,7 +810,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
>> IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> regmap_write(data->regmap, APDS9960_REG_PICLEAR, 1);
>> }
>>
>> diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
>> index c8d7b5e..9d66e89 100644
>> --- a/drivers/iio/light/cm36651.c
>> +++ b/drivers/iio/light/cm36651.c
>> @@ -268,7 +268,7 @@ static irqreturn_t cm36651_irq_handler(int irq, void *data)
>> CM36651_CMD_READ_RAW_PROXIMITY,
>> IIO_EV_TYPE_THRESH, ev_dir);
>>
>> - iio_push_event(indio_dev, ev_code, iio_get_time_ns());
>> + iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
>>
>> return IRQ_HANDLED;
>> }
>> diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
>> index 6d41086..f558a2b 100644
>> --- a/drivers/iio/light/gp2ap020a00f.c
>> +++ b/drivers/iio/light/gp2ap020a00f.c
>> @@ -851,7 +851,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
>> GP2AP020A00F_SCAN_MODE_PROXIMITY,
>> IIO_EV_TYPE_ROC,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> } else {
>> iio_push_event(indio_dev,
>> IIO_UNMOD_EVENT_CODE(
>> @@ -859,7 +859,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
>> GP2AP020A00F_SCAN_MODE_PROXIMITY,
>> IIO_EV_TYPE_ROC,
>> IIO_EV_DIR_FALLING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>> }
>>
>> @@ -925,7 +925,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
>> IIO_MOD_LIGHT_CLEAR,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>>
>> if (test_bit(GP2AP020A00F_FLAG_ALS_FALLING_EV, &priv->flags)) {
>> @@ -939,7 +939,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
>> IIO_MOD_LIGHT_CLEAR,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_FALLING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>> }
>>
>> diff --git a/drivers/iio/light/isl29125.c b/drivers/iio/light/isl29125.c
>> index e2945a2..67ccc5e 100644
>> --- a/drivers/iio/light/isl29125.c
>> +++ b/drivers/iio/light/isl29125.c
>> @@ -189,7 +189,7 @@ static irqreturn_t isl29125_trigger_handler(int irq, void *p)
>> }
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
>> index e56937c..f409c20 100644
>> --- a/drivers/iio/light/lm3533-als.c
>> +++ b/drivers/iio/light/lm3533-als.c
>> @@ -267,7 +267,7 @@ static irqreturn_t lm3533_als_isr(int irq, void *dev_id)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> out:
>> return IRQ_HANDLED;
>> }
>> diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
>> index 6bf89d8..3afc53a 100644
>> --- a/drivers/iio/light/ltr501.c
>> +++ b/drivers/iio/light/ltr501.c
>> @@ -1256,7 +1256,8 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
>> buf[j++] = psdata & LTR501_PS_DATA_MASK;
>> }
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> @@ -1282,14 +1283,14 @@ static irqreturn_t ltr501_interrupt_handler(int irq, void *private)
>> IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> if (status & LTR501_STATUS_PS_INTR)
>> iio_push_event(indio_dev,
>> IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> return IRQ_HANDLED;
>> }
>> diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
>> index b776c8e..78c9b3a 100644
>> --- a/drivers/iio/light/opt3001.c
>> +++ b/drivers/iio/light/opt3001.c
>> @@ -713,13 +713,13 @@ static irqreturn_t opt3001_irq(int irq, void *_iio)
>> IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(iio));
>> if (ret & OPT3001_CONFIGURATION_FL)
>> iio_push_event(iio,
>> IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_FALLING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(iio));
>> } else if (ret & OPT3001_CONFIGURATION_CRF) {
>> ret = i2c_smbus_read_word_swapped(opt->client, OPT3001_RESULT);
>> if (ret < 0) {
>> diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
>> index 42d334b..b48641d 100644
>> --- a/drivers/iio/light/stk3310.c
>> +++ b/drivers/iio/light/stk3310.c
>> @@ -529,7 +529,7 @@ static irqreturn_t stk3310_irq_handler(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> struct stk3310_data *data = iio_priv(indio_dev);
>>
>> - data->timestamp = iio_get_time_ns();
>> + data->timestamp = iio_get_time_ns(indio_dev);
>>
>> return IRQ_WAKE_THREAD;
>> }
>> diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
>> index f90f8c5..936e764 100644
>> --- a/drivers/iio/light/tcs3414.c
>> +++ b/drivers/iio/light/tcs3414.c
>> @@ -217,7 +217,7 @@ static irqreturn_t tcs3414_trigger_handler(int irq, void *p)
>> }
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
>> index 1b530bf..95519a3 100644
>> --- a/drivers/iio/light/tcs3472.c
>> +++ b/drivers/iio/light/tcs3472.c
>> @@ -204,7 +204,7 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p)
>> }
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
>> index 12731d6..27dbfdd 100644
>> --- a/drivers/iio/light/tsl2563.c
>> +++ b/drivers/iio/light/tsl2563.c
>> @@ -630,7 +630,7 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_EITHER),
>> - iio_get_time_ns());
>> + iio_get_time_ns(dev_info));
>>
>> /* clear the interrupt and push the event */
>> i2c_smbus_write_byte(chip->client, TSL2563_CMD | TSL2563_CLEARINT);
>> diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c
>> index 45bc2f7..20c40f7 100644
>> --- a/drivers/iio/light/us5182d.c
>> +++ b/drivers/iio/light/us5182d.c
>> @@ -833,7 +833,7 @@ static irqreturn_t us5182d_irq_thread_handler(int irq, void *private)
>> dir = ret & US5182D_CFG0_PROX ? IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
>> ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, IIO_EV_TYPE_THRESH, dir);
>>
>> - iio_push_event(indio_dev, ev, iio_get_time_ns());
>> + iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
>>
>> ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG0,
>> ret & ~US5182D_CFG0_PX_IRQ);
>> diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
>> index 77882b4..ba3e2a3 100644
>> --- a/drivers/iio/magnetometer/hmc5843_core.c
>> +++ b/drivers/iio/magnetometer/hmc5843_core.c
>> @@ -451,7 +451,7 @@ static irqreturn_t hmc5843_trigger_handler(int irq, void *p)
>> goto done;
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c
>> index 261d517..f2be4a0 100644
>> --- a/drivers/iio/magnetometer/mag3110.c
>> +++ b/drivers/iio/magnetometer/mag3110.c
>> @@ -261,7 +261,7 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p)
>> }
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
>> index 01b2e0b..6392d7b 100644
>> --- a/drivers/iio/pressure/mpl3115.c
>> +++ b/drivers/iio/pressure/mpl3115.c
>> @@ -171,7 +171,7 @@ static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
>> mutex_unlock(&data->lock);
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> done:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c
>> index 37dbc04..8bc178b 100644
>> --- a/drivers/iio/pressure/ms5611_core.c
>> +++ b/drivers/iio/pressure/ms5611_core.c
>> @@ -224,7 +224,8 @@ static irqreturn_t ms5611_trigger_handler(int irq, void *p)
>> if (ret < 0)
>> goto err;
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
>> + iio_get_time_ns(indio_dev));
>>
>> err:
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
>> index 4f502386..b216220 100644
>> --- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
>> +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
>> @@ -244,7 +244,7 @@ static irqreturn_t lidar_trigger_handler(int irq, void *private)
>> ret = lidar_get_measurement(data, data->buffer);
>> if (!ret) {
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> } else if (ret != -EINVAL) {
>> dev_err(&data->client->dev, "cannot read LIDAR measurement");
>> }
>> diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
>> index 66cd09a..1d74b3a 100644
>> --- a/drivers/iio/proximity/sx9500.c
>> +++ b/drivers/iio/proximity/sx9500.c
>> @@ -492,7 +492,7 @@ static void sx9500_push_events(struct iio_dev *indio_dev)
>> dir = new_prox ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
>> ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
>> IIO_EV_TYPE_THRESH, dir);
>> - iio_push_event(indio_dev, ev, iio_get_time_ns());
>> + iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
>> data->prox_stat[chan] = new_prox;
>> }
>> }
>> @@ -669,7 +669,7 @@ static irqreturn_t sx9500_trigger_handler(int irq, void *private)
>> }
>>
>> iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>>
>> out:
>> mutex_unlock(&data->mutex);
>> diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c
>> index 7a6fed3..5c3410a 100644
>> --- a/drivers/staging/iio/accel/lis3l02dq_core.c
>> +++ b/drivers/staging/iio/accel/lis3l02dq_core.c
>> @@ -451,7 +451,7 @@ static irqreturn_t lis3l02dq_event_handler(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> u8 t;
>>
>> - s64 timestamp = iio_get_time_ns();
>> + s64 timestamp = iio_get_time_ns(indio_dev);
>>
>> lis3l02dq_spi_read_reg_8(indio_dev,
>> LIS3L02DQ_REG_WAKE_UP_SRC_ADDR,
>> diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
>> index a8f533a..cff7e4a 100644
>> --- a/drivers/staging/iio/accel/sca3000_core.c
>> +++ b/drivers/staging/iio/accel/sca3000_core.c
>> @@ -774,7 +774,7 @@ static irqreturn_t sca3000_event_handler(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> struct sca3000_state *st = iio_priv(indio_dev);
>> int ret, val;
>> - s64 last_timestamp = iio_get_time_ns();
>> + s64 last_timestamp = iio_get_time_ns(indio_dev);
>>
>> /*
>> * Could lead if badly timed to an extra read of status reg,
>> diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
>> index 62e5eca..69fa4eb 100644
>> --- a/drivers/staging/iio/adc/ad7280a.c
>> +++ b/drivers/staging/iio/adc/ad7280a.c
>> @@ -705,7 +705,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
>> IIO_EV_DIR_RISING,
>> IIO_EV_TYPE_THRESH,
>> 0, 0, 0),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> else if (((channels[i] >> 11) & 0xFFF) <=
>> st->cell_threshlow)
>> iio_push_event(indio_dev,
>> @@ -715,7 +715,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
>> IIO_EV_DIR_FALLING,
>> IIO_EV_TYPE_THRESH,
>> 0, 0, 0),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> } else {
>> if (((channels[i] >> 11) & 0xFFF) >= st->aux_threshhigh)
>> iio_push_event(indio_dev,
>> @@ -724,7 +724,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> else if (((channels[i] >> 11) & 0xFFF) <=
>> st->aux_threshlow)
>> iio_push_event(indio_dev,
>> @@ -733,7 +733,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_FALLING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>> }
>>
>> diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
>> index a6f8eb1..0572df9 100644
>> --- a/drivers/staging/iio/adc/ad7606_ring.c
>> +++ b/drivers/staging/iio/adc/ad7606_ring.c
>> @@ -77,7 +77,8 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
>> goto done;
>> }
>>
>> - iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
>> + iio_push_to_buffers_with_timestamp(indio_dev, buf,
>> + iio_get_time_ns(indio_dev));
>> done:
>> gpio_set_value(st->pdata->gpio_convst, 0);
>> iio_trigger_notify_done(indio_dev->trig);
>> diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
>> index ac3735c..5e8115b 100644
>> --- a/drivers/staging/iio/adc/ad7816.c
>> +++ b/drivers/staging/iio/adc/ad7816.c
>> @@ -253,7 +253,8 @@ static const struct attribute_group ad7816_attribute_group = {
>>
>> static irqreturn_t ad7816_event_handler(int irq, void *private)
>> {
>> - iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI, iio_get_time_ns());
>> + iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI,
>> + iio_get_time_ns((struct iio_dev *)private));
>> return IRQ_HANDLED;
>> }
>>
>> diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
>> index 3adc451..f4ea954 100644
>> --- a/drivers/staging/iio/addac/adt7316.c
>> +++ b/drivers/staging/iio/addac/adt7316.c
>> @@ -1755,7 +1755,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
>> if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
>> stat1 &= 0x1F;
>>
>> - time = iio_get_time_ns();
>> + time = iio_get_time_ns(indio_dev);
>> if (stat1 & BIT(0))
>> iio_push_event(indio_dev,
>> IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
>> @@ -1807,7 +1807,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
>> 0,
>> IIO_EV_TYPE_THRESH,
>> IIO_EV_DIR_RISING),
>> - iio_get_time_ns());
>> + iio_get_time_ns(indio_dev));
>> }
>>
>> return IRQ_HANDLED;
>> diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
>> index f6b9a10..5578a07 100644
>> --- a/drivers/staging/iio/cdc/ad7150.c
>> +++ b/drivers/staging/iio/cdc/ad7150.c
>> @@ -493,7 +493,7 @@ static irqreturn_t ad7150_event_handler(int irq, void *private)
>> struct iio_dev *indio_dev = private;
>> struct ad7150_chip_info *chip = iio_priv(indio_dev);
>> u8 int_status;
>> - s64 timestamp = iio_get_time_ns();
>> + s64 timestamp = iio_get_time_ns(indio_dev);
>> int ret;
>>
>> ret = i2c_smbus_read_byte_data(chip->client, AD7150_STATUS);
>> diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
>> index 2a62718..d35b503 100644
>> --- a/drivers/staging/iio/light/tsl2x7x_core.c
>> +++ b/drivers/staging/iio/light/tsl2x7x_core.c
>> @@ -1524,7 +1524,7 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
>> {
>> struct iio_dev *indio_dev = private;
>> struct tsl2X7X_chip *chip = iio_priv(indio_dev);
>> - s64 timestamp = iio_get_time_ns();
>> + s64 timestamp = iio_get_time_ns(indio_dev);
>> int ret;
>> u8 value;
>>
>> diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
>> index b2b1677..8b1db3a 100644
>> --- a/include/linux/iio/iio.h
>> +++ b/include/linux/iio/iio.h
>> @@ -281,13 +281,8 @@ static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
>> }, \
>> }
>>
>> -/**
>> - * iio_get_time_ns() - utility function to get a time stamp for events etc
>> - **/
>> -static inline s64 iio_get_time_ns(void)
>> -{
>> - return ktime_get_real_ns();
>> -}
>> +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 */
>> #define INDIO_DIRECT_MODE 0x01
>> @@ -466,6 +461,7 @@ struct iio_buffer_setup_ops {
>> * @chan_attr_group: [INTERN] group for all attrs in base directory
>> * @name: [DRIVER] name of the device.
>> * @info: [DRIVER] callbacks and constant info from driver
>> + * @clock_id: [INTERN] timestamping clock posix identifier
>> * @info_exist_lock: [INTERN] lock to prevent use during removal
>> * @setup_ops: [DRIVER] callbacks to call before and after buffer
>> * enable/disable
>> @@ -506,6 +502,7 @@ struct iio_dev {
>> struct attribute_group chan_attr_group;
>> const char *name;
>> const struct iio_info *info;
>> + clockid_t clock_id;
>> struct mutex info_exist_lock;
>> const struct iio_buffer_setup_ops *setup_ops;
>> struct cdev chrdev;
>> @@ -532,7 +529,7 @@ extern struct bus_type iio_bus_type;
>>
>> /**
>> * iio_device_put() - reference counted deallocation of struct device
>> - * @indio_dev: IIO device structure containing the device
>> + * @indio_dev: IIO device structure containing the device
>> **/
>> static inline void iio_device_put(struct iio_dev *indio_dev)
>> {
>> @@ -541,6 +538,15 @@ static inline void iio_device_put(struct iio_dev *indio_dev)
>> }
>>
>> /**
>> + * iio_device_get_clock() - Retrieve current timestamping clock for the device
>> + * @indio_dev: IIO device structure containing the device
>> + */
>> +static inline clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
>> +{
>> + return indio_dev->clock_id;
>> +}
>> +
>> +/**
>> * dev_to_iio_dev() - Get IIO device struct from a device struct
>> * @dev: The device embedded in the IIO device
>> *
>> --
>> 2.1.4
>>
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-06-30 19:13 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-03-09 18:03 [PATCH v5 0/2] iio:core: introduce timestamping clock selection Gregor Boirie
2016-03-09 18:05 ` [PATCH v5 1/2] timekeeping: export get_monotonic_coarse64 symbol Gregor Boirie
2016-03-09 18:05 ` [PATCH v5 2/2] iio:core: timestamping clock selection support Gregor Boirie
2016-03-10 7:06 ` maitysanchayan
2016-06-30 19:13 ` Jonathan Cameron
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