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iio: accel: hid-sensor-accel-3d: Add timestamp

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Added timestamp channel. With this change, each sample has a timestamp.
This timestamp can be from the sensor hub when present or local kernel
timestamp. HID sensors can send timestamp with input data using usage id
HID_USAGE_SENSOR_TIME_TIMESTAMP. This timestamp value is converted to
nano seconds before pushing this sample to the iio core.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Srinivas Pandruvada
2016-11-28 14:41:16 -08:00
committed by Jonathan Cameron
부모 902c4b2446
커밋 a96cd0f901
4개의 변경된 파일과 60개의 추가작업 그리고 13개의 파일을 삭제
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36
drivers/iio/common/hid-sensors/hid-sensor-attributes.c
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@@ -58,6 +58,10 @@ static struct {
{HID_USAGE_SENSOR_PRESSURE, 0, 100, 0},
{HID_USAGE_SENSOR_PRESSURE, HID_USAGE_SENSOR_UNITS_PASCAL, 0, 1000000},
{HID_USAGE_SENSOR_TIME_TIMESTAMP, 0, 1000000000, 0},
{HID_USAGE_SENSOR_TIME_TIMESTAMP, HID_USAGE_SENSOR_UNITS_MILLISECOND,
1000000, 0},
};
static int pow_10(unsigned power)
@@ -346,6 +350,13 @@ int hid_sensor_format_scale(u32 usage_id,
}
EXPORT_SYMBOL(hid_sensor_format_scale);
int64_t hid_sensor_convert_timestamp(struct hid_sensor_common *st,
int64_t raw_value)
{
return st->timestamp_ns_scale * raw_value;
}
EXPORT_SYMBOL(hid_sensor_convert_timestamp);
static
int hid_sensor_get_reporting_interval(struct hid_sensor_hub_device *hsdev,
u32 usage_id,
@@ -367,6 +378,7 @@ int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
struct hid_sensor_common *st)
{
struct hid_sensor_hub_attribute_info timestamp;
hid_sensor_get_reporting_interval(hsdev, usage_id, st);
@@ -385,11 +397,25 @@ int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
HID_USAGE_SENSOR_PROP_SENSITIVITY_ABS,
&st->sensitivity);
hid_dbg(hsdev->hdev, "common attributes: %x:%x, %x:%x, %x:%x %x:%x\n",
st->poll.index, st->poll.report_id,
st->report_state.index, st->report_state.report_id,
st->power_state.index, st->power_state.report_id,
st->sensitivity.index, st->sensitivity.report_id);
sensor_hub_input_get_attribute_info(hsdev,
HID_INPUT_REPORT, usage_id,
HID_USAGE_SENSOR_TIME_TIMESTAMP,
&timestamp);
if (timestamp.index >= 0 && timestamp.report_id) {
int val0, val1;
hid_sensor_format_scale(HID_USAGE_SENSOR_TIME_TIMESTAMP,
&timestamp, &val0, &val1);
st->timestamp_ns_scale = val0;
} else
st->timestamp_ns_scale = 1000000000;
hid_dbg(hsdev->hdev, "common attributes: %x:%x, %x:%x, %x:%x %x:%x %x:%x\n",
st->poll.index, st->poll.report_id,
st->report_state.index, st->report_state.report_id,
st->power_state.index, st->power_state.report_id,
st->sensitivity.index, st->sensitivity.report_id,
timestamp.index, timestamp.report_id);
return 0;
}