diff options
| author | Ye Xiang <xiang.ye@intel.com> | 2021-01-05 17:35:12 +0800 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-01-22 08:52:04 +0000 |
| commit | 314f7cad1ad20ebcc3a0a1520bdea567b87e0186 (patch) | |
| tree | c453f61af36eb4bddbb0910f9b6da0759d9907cd /drivers/iio/light | |
| parent | 4648cbd8fb92de705ae2823717d152e4c71fe50d (diff) | |
iio: hid-sensor-als: 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. And the
unit of timestamp is nanosecond.
Signed-off-by: Ye Xiang <xiang.ye@intel.com>
Link: https://lore.kernel.org/r/20210105093515.19135-4-xiang.ye@intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/light')
| -rw-r--r-- | drivers/iio/light/hid-sensor-als.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c index a21c827e4953..4093f2353d95 100644 --- a/drivers/iio/light/hid-sensor-als.c +++ b/drivers/iio/light/hid-sensor-als.c @@ -22,15 +22,21 @@ enum { CHANNEL_SCAN_INDEX_MAX }; +#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX + struct als_state { struct hid_sensor_hub_callbacks callbacks; struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info als_illum; - u32 illum[CHANNEL_SCAN_INDEX_MAX]; + struct { + u32 illum[CHANNEL_SCAN_INDEX_MAX]; + u64 timestamp __aligned(8); + } scan; int scale_pre_decml; int scale_post_decml; int scale_precision; int value_offset; + s64 timestamp; }; /* Channel definitions */ @@ -54,7 +60,8 @@ static const struct iio_chan_spec als_channels[] = { BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS), .scan_index = CHANNEL_SCAN_INDEX_ILLUM, - } + }, + IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP) }; /* Adjust channel real bits based on report descriptor */ @@ -168,14 +175,6 @@ static const struct iio_info als_info = { .write_raw = &als_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 als_proc_event(struct hid_sensor_hub_device *hsdev, unsigned usage_id, @@ -185,10 +184,14 @@ static int als_proc_event(struct hid_sensor_hub_device *hsdev, struct als_state *als_state = iio_priv(indio_dev); dev_dbg(&indio_dev->dev, "als_proc_event\n"); - if (atomic_read(&als_state->common_attributes.data_ready)) - hid_sensor_push_data(indio_dev, - &als_state->illum, - sizeof(als_state->illum)); + if (atomic_read(&als_state->common_attributes.data_ready)) { + if (!als_state->timestamp) + als_state->timestamp = iio_get_time_ns(indio_dev); + + iio_push_to_buffers_with_timestamp(indio_dev, &als_state->scan, + als_state->timestamp); + als_state->timestamp = 0; + } return 0; } @@ -206,10 +209,14 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev, switch (usage_id) { case HID_USAGE_SENSOR_LIGHT_ILLUM: - als_state->illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data; - als_state->illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data; + als_state->scan.illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data; + als_state->scan.illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data; ret = 0; break; + case HID_USAGE_SENSOR_TIME_TIMESTAMP: + als_state->timestamp = hid_sensor_convert_timestamp(&als_state->common_attributes, + *(s64 *)raw_data); + break; default: break; } |