diff options
| author | Ye Xiang <xiang.ye@intel.com> | 2021-07-31 11:25:56 +0800 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-08-09 20:17:36 +0100 |
| commit | 3304d2b69a36996fb9bf708310de5cd76a04c09e (patch) | |
| tree | bc9fbe2aa4ba62941dd34321b20d3209cfa3c105 /drivers/iio | |
| parent | 394a0150a0644389ce4d587f5c67393308eec28c (diff) | |
| download | linux-3304d2b69a36996fb9bf708310de5cd76a04c09e.tar.bz2 | |
iio: hid-sensor-press: Add timestamp channel
Each sample has a timestamp field with this change. This timestamp may
be from the sensor hub when present or local kernel timestamp. The
unit of timestamp is nanosecond.
Signed-off-by: Ye Xiang <xiang.ye@intel.com>
Link: https://lore.kernel.org/r/20210731032556.26813-1-xiang.ye@intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/pressure/hid-sensor-press.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index dcd593c426b4..a9215eb32d70 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -13,17 +13,24 @@ #include <linux/iio/buffer.h> #include "../common/hid-sensors/hid-sensor-trigger.h" -#define CHANNEL_SCAN_INDEX_PRESSURE 0 +enum { + CHANNEL_SCAN_INDEX_PRESSURE, + CHANNEL_SCAN_INDEX_TIMESTAMP, +}; struct press_state { struct hid_sensor_hub_callbacks callbacks; struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info press_attr; - u32 press_data; + struct { + u32 press_data; + u64 timestamp __aligned(8); + } scan; int scale_pre_decml; int scale_post_decml; int scale_precision; int value_offset; + s64 timestamp; }; static const u32 press_sensitivity_addresses[] = { @@ -41,7 +48,9 @@ static const struct iio_chan_spec press_channels[] = { BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS), .scan_index = CHANNEL_SCAN_INDEX_PRESSURE, - } + }, + IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP) + }; /* Adjust channel real bits based on report descriptor */ @@ -154,14 +163,6 @@ static const struct iio_info press_info = { .write_raw = &press_write_raw, }; -/* Function to push data to buffer */ -static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data, - int len) -{ - dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n"); - iio_push_to_buffers(indio_dev, data); -} - /* Callback handler to send event after all samples are received and captured */ static int press_proc_event(struct hid_sensor_hub_device *hsdev, unsigned usage_id, @@ -171,10 +172,13 @@ static int press_proc_event(struct hid_sensor_hub_device *hsdev, struct press_state *press_state = iio_priv(indio_dev); dev_dbg(&indio_dev->dev, "press_proc_event\n"); - if (atomic_read(&press_state->common_attributes.data_ready)) - hid_sensor_push_data(indio_dev, - &press_state->press_data, - sizeof(press_state->press_data)); + if (atomic_read(&press_state->common_attributes.data_ready)) { + if (!press_state->timestamp) + press_state->timestamp = iio_get_time_ns(indio_dev); + + iio_push_to_buffers_with_timestamp( + indio_dev, &press_state->scan, press_state->timestamp); + } return 0; } @@ -191,9 +195,13 @@ static int press_capture_sample(struct hid_sensor_hub_device *hsdev, switch (usage_id) { case HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE: - press_state->press_data = *(u32 *)raw_data; + press_state->scan.press_data = *(u32 *)raw_data; ret = 0; break; + case HID_USAGE_SENSOR_TIME_TIMESTAMP: + press_state->timestamp = hid_sensor_convert_timestamp( + &press_state->common_attributes, *(s64 *)raw_data); + break; default: break; } |