From 4648cbd8fb92de705ae2823717d152e4c71fe50d Mon Sep 17 00:00:00 2001 From: Ye Xiang Date: Tue, 5 Jan 2021 17:35:11 +0800 Subject: iio: hid-sensor-gyro-3d: 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 Link: https://lore.kernel.org/r/20210105093515.19135-3-xiang.ye@intel.com Signed-off-by: Jonathan Cameron --- drivers/iio/gyro/hid-sensor-gyro-3d.c | 40 +++++++++++++++++++++-------------- 1 file changed, 24 insertions(+), 16 deletions(-) diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c index 6698f5f535f6..fb0d678ece1a 100644 --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c @@ -23,15 +23,20 @@ enum gyro_3d_channel { GYRO_3D_CHANNEL_MAX, }; +#define CHANNEL_SCAN_INDEX_TIMESTAMP GYRO_3D_CHANNEL_MAX struct gyro_3d_state { struct hid_sensor_hub_callbacks callbacks; struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info gyro[GYRO_3D_CHANNEL_MAX]; - u32 gyro_val[GYRO_3D_CHANNEL_MAX]; + struct { + u32 gyro_val[GYRO_3D_CHANNEL_MAX]; + u64 timestamp __aligned(8); + } scan; int scale_pre_decml; int scale_post_decml; int scale_precision; int value_offset; + s64 timestamp; }; static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = { @@ -72,7 +77,8 @@ static const struct iio_chan_spec gyro_3d_channels[] = { BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS), .scan_index = CHANNEL_SCAN_INDEX_Z, - } + }, + IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP) }; /* Adjust channel real bits based on report descriptor */ @@ -178,14 +184,6 @@ static const struct iio_info gyro_3d_info = { .write_raw = &gyro_3d_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 gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev, unsigned usage_id, @@ -195,10 +193,15 @@ static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev, struct gyro_3d_state *gyro_state = iio_priv(indio_dev); dev_dbg(&indio_dev->dev, "gyro_3d_proc_event\n"); - if (atomic_read(&gyro_state->common_attributes.data_ready)) - hid_sensor_push_data(indio_dev, - gyro_state->gyro_val, - sizeof(gyro_state->gyro_val)); + if (atomic_read(&gyro_state->common_attributes.data_ready)) { + if (!gyro_state->timestamp) + gyro_state->timestamp = iio_get_time_ns(indio_dev); + + iio_push_to_buffers_with_timestamp(indio_dev, &gyro_state->scan, + gyro_state->timestamp); + + gyro_state->timestamp = 0; + } return 0; } @@ -219,10 +222,15 @@ static int gyro_3d_capture_sample(struct hid_sensor_hub_device *hsdev, case HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS: case HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS: offset = usage_id - HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS; - gyro_state->gyro_val[CHANNEL_SCAN_INDEX_X + offset] = - *(u32 *)raw_data; + gyro_state->scan.gyro_val[CHANNEL_SCAN_INDEX_X + offset] = + *(u32 *)raw_data; ret = 0; break; + case HID_USAGE_SENSOR_TIME_TIMESTAMP: + gyro_state->timestamp = + hid_sensor_convert_timestamp(&gyro_state->common_attributes, + *(s64 *)raw_data); + break; default: break; } -- cgit v1.2.3