Adds a new per-device sysfs attribute "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@xxxxxxxxxx>
---
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/humidity/dht11.c | 16 +-
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/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 | 2 +-
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 +-
drivers/staging/iio/magnetometer/hmc5843_core.c | 2 +-
include/linux/iio/iio.h | 20 ++-
64 files changed, 324 insertions(+), 114 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@xxxxxxxxxxxxxxx
+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..df47dd4 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..d5f842b 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();
+ int64_t 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..44a65b7 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 7f4994f..6d6019b 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -718,7 +718,7 @@ 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);
@@ -798,7 +798,7 @@ 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 d803e50..b5c9304 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -442,7 +442,7 @@ 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
@@ -483,7 +483,7 @@ 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);
@@ -537,7 +537,7 @@ static int ina2xx_buffer_enable(struct iio_dev *indio_dev)
trace_printk("Expected work period: %u us\n", sampling_us);
trace_printk("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..e1f5420 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..be41757 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 06cd49c..d83b6d3 100644
--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -185,7 +185,7 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
if (ret > 0)
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..41dbe20 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..4535b7e 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..54d1c74 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/humidity/dht11.c b/drivers/iio/humidity/dht11.c
index 20b500d..8dbad4e 100644
--- a/drivers/iio/humidity/dht11.c
+++ b/drivers/iio/humidity/dht11.c
@@ -110,7 +110,8 @@ static unsigned char dht11_decode_byte(char *bits)
return ret;
}
-static int dht11_decode(struct dht11 *dht11, int offset)
+static int dht11_decode(const struct iio_dev* iio_dev, struct dht11 *dht11,
+ int offset)
{
int i, t;
char bits[DHT11_BITS_PER_READ];
@@ -133,7 +134,7 @@ static int dht11_decode(struct dht11 *dht11, int offset)
if (((hum_int + hum_dec + temp_int + temp_dec) & 0xff) != checksum)
return -EIO;
- dht11->timestamp = ktime_get_boot_ns();
+ dht11->timestamp = iio_get_time_ns(iio_dev);
if (hum_int < 20) { /* DHT22 */
dht11->temperature = (((temp_int & 0x7f) << 8) + temp_dec) *
((temp_int & 0x80) ? -100 : 100);
@@ -161,7 +162,7 @@ static irqreturn_t dht11_handle_irq(int irq, void *data)
/* TODO: Consider making the handler safe for IRQ sharing */
if (dht11->num_edges < DHT11_EDGES_PER_READ && dht11->num_edges >= 0) {
- dht11->edges[dht11->num_edges].ts = ktime_get_boot_ns();
+ dht11->edges[dht11->num_edges].ts = iio_get_time_ns(iio);
dht11->edges[dht11->num_edges++].value =
gpio_get_value(dht11->gpio);
@@ -180,8 +181,9 @@ static int dht11_read_raw(struct iio_dev *iio_dev,
int ret, timeres, offset;
mutex_lock(&dht11->lock);
- if (dht11->timestamp + DHT11_DATA_VALID_TIME < ktime_get_boot_ns()) {
- timeres = ktime_get_resolution_ns();
+ if (dht11->timestamp + DHT11_DATA_VALID_TIME <
+ iio_get_time_ns(iio_dev)) {
+ timeres = iio_get_time_res(iio_dev);
if (timeres > DHT11_MIN_TIMERES) {
dev_err(dht11->dev, "timeresolution %dns too low\n",
timeres);
@@ -231,7 +233,7 @@ static int dht11_read_raw(struct iio_dev *iio_dev,
offset = DHT11_EDGES_PREAMBLE +
dht11->num_edges - DHT11_EDGES_PER_READ;
for (; offset >= 0; --offset) {
- ret = dht11_decode(dht11, offset);
+ ret = dht11_decode(iio_dev, dht11, offset);
if (!ret)
break;
}
@@ -302,7 +304,7 @@ static int dht11_probe(struct platform_device *pdev)
return -EINVAL;
}
- dht11->timestamp = ktime_get_boot_ns() - DHT11_DATA_VALID_TIME - 1;
+ dht11->timestamp = iio_get_time_ns(iio) - DHT11_DATA_VALID_TIME - 1;
dht11->num_edges = -1;
platform_set_drvdata(pdev, iio);
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
index 3598835..a07d2ec 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 1fc5fd9..92bfb41 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..cbfdecb 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 = "CLOCK_REALTIME\n";
+ sz = sizeof("CLOCK_REALTIME\n");
+ break;
+ case CLOCK_MONOTONIC:
+ name = "CLOCK_MONOTONIC\n";
+ sz = sizeof("CLOCK_MONOTONIC\n");
+ break;
+ case CLOCK_MONOTONIC_RAW:
+ name = "CLOCK_MONOTONIC_RAW\n";
+ sz = sizeof("CLOCK_MONOTONIC_RAW\n");
+ break;
+ case CLOCK_REALTIME_COARSE:
+ name = "CLOCK_REALTIME_COARSE\n";
+ sz = sizeof("CLOCK_REALTIME_COARSE\n");
+ break;
+ case CLOCK_MONOTONIC_COARSE:
+ name = "CLOCK_MONOTONIC_COARSE\n";
+ sz = sizeof("CLOCK_MONOTONIC_COARSE\n");
+ break;
+ case CLOCK_BOOTTIME:
+ name = "CLOCK_BOOTTIME\n";
+ sz = sizeof("CLOCK_BOOTTIME\n");
+ break;
+ case CLOCK_TAI:
+ name = "CLOCK_TAI\n";
+ sz = sizeof("CLOCK_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, "CLOCK_REALTIME"))
+ clk = CLOCK_REALTIME;
+ else if (sysfs_streq(buf, "CLOCK_MONOTONIC"))
+ clk = CLOCK_MONOTONIC;
+ else if (sysfs_streq(buf, "CLOCK_MONOTONIC_RAW"))
+ clk = CLOCK_MONOTONIC_RAW;
+ else if (sysfs_streq(buf, "CLOCK_REALTIME_COARSE"))
+ clk = CLOCK_REALTIME_COARSE;
+ else if (sysfs_streq(buf, "CLOCK_MONOTONIC_COARSE"))
+ clk = CLOCK_MONOTONIC_COARSE;
+ else if (sysfs_streq(buf, "CLOCK_BOOTTIME"))
+ clk = CLOCK_BOOTTIME;
+ else if (sysfs_streq(buf, "CLOCK_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(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_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_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..d4a46f5 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..3e85493 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/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 c7885f0c..5e6f537 100644
--- a/drivers/iio/pressure/ms5611_core.c
+++ b/drivers/iio/pressure/ms5611_core.c
@@ -190,7 +190,8 @@ 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 db35e04..2cd37cd 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 02e930c..327b9e0 100644
--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -775,7 +775,7 @@ 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..d5823c2 100644
--- a/drivers/staging/iio/adc/ad7606_ring.c
+++ b/drivers/staging/iio/adc/ad7606_ring.c
@@ -77,7 +77,7 @@ 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 2226051..9f24334 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/drivers/staging/iio/magnetometer/hmc5843_core.c b/drivers/staging/iio/magnetometer/hmc5843_core.c
index 9ee9a42..abc4596 100644
--- a/drivers/staging/iio/magnetometer/hmc5843_core.c
+++ b/drivers/staging/iio/magnetometer/hmc5843_core.c
@@ -436,7 +436,7 @@ 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/include/linux/iio/iio.h b/include/linux/iio/iio.h
index ce9e9c1..7015abe 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();
-}
+extern s64 iio_get_time_ns(const struct iio_dev*);
+extern unsigned int iio_get_time_res(const struct iio_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;
@@ -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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