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112 lines
3.7 KiB
112 lines
3.7 KiB
From 3cd71dfdb89050b17a5e5e7c80c3d8e0cd02b196 Mon Sep 17 00:00:00 2001
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From: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
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From: Evgeni <evgeni.raikhel@intel.com>
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Date: Sun, 13 May 2018 10:49:26 -0400
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Subject: [PATCH] Adding missing HID timestamp patch for Gyro sensor.
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Ubuntu 18.04 Bionic Beaver with KErnel 4.15
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A symmetric patch for Accelerator was already upstreamed,
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this patch was skipped from upstream
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The patch was written by Srinivas Pandruvada <srinivas.pandruvada@intel.com>
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Additionally, timestamp management is fixed
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---
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drivers/iio/accel/hid-sensor-accel-3d.c | 1 +
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drivers/iio/gyro/hid-sensor-gyro-3d.c | 31 ++++++++++++++++++++++++-------
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2 files changed, 25 insertions(+), 7 deletions(-)
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diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c b/drivers/iio/accel/hid-sensor-accel-3d.c
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index c066a3b..3346631 100644
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--- a/drivers/iio/accel/hid-sensor-accel-3d.c
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+++ b/drivers/iio/accel/hid-sensor-accel-3d.c
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@@ -289,6 +289,7 @@ static int accel_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
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hid_sensor_convert_timestamp(
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&accel_state->common_attributes,
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*(int64_t *)raw_data);
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+ ret = 0;
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break;
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default:
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break;
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diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c
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index f59995a..98cec98 100644
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--- a/drivers/iio/gyro/hid-sensor-gyro-3d.c
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+++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c
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@@ -42,11 +42,13 @@ struct gyro_3d_state {
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struct hid_sensor_hub_callbacks callbacks;
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struct hid_sensor_common common_attributes;
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struct hid_sensor_hub_attribute_info gyro[GYRO_3D_CHANNEL_MAX];
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- u32 gyro_val[GYRO_3D_CHANNEL_MAX];
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+ /* Reserve for 3 channels + padding + timestamp */
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+ u32 gyro_val[GYRO_3D_CHANNEL_MAX + 3];
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int scale_pre_decml;
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int scale_post_decml;
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int scale_precision;
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int value_offset;
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+ int64_t timestamp;
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};
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static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = {
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@@ -87,7 +89,8 @@ static const struct iio_chan_spec gyro_3d_channels[] = {
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BIT(IIO_CHAN_INFO_SAMP_FREQ) |
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BIT(IIO_CHAN_INFO_HYSTERESIS),
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.scan_index = CHANNEL_SCAN_INDEX_Z,
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- }
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+ },
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+ IIO_CHAN_SOFT_TIMESTAMP(3)
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};
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/* Adjust channel real bits based on report descriptor */
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@@ -194,11 +197,11 @@ static const struct iio_info gyro_3d_info = {
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};
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/* Function to push data to buffer */
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-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
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- int len)
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+static void hid_sensor_push_data(struct iio_dev *indio_dev, void *data,
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+ int len, int64_t timestamp)
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{
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dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
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- iio_push_to_buffers(indio_dev, data);
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+ iio_push_to_buffers_with_timestamp(indio_dev, data, timestamp);
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}
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/* Callback handler to send event after all samples are received and captured */
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@@ -210,10 +213,17 @@ static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
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struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
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dev_dbg(&indio_dev->dev, "gyro_3d_proc_event\n");
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- if (atomic_read(&gyro_state->common_attributes.data_ready))
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+ if (atomic_read(&gyro_state->common_attributes.data_ready)) {
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+ if (!gyro_state->timestamp)
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+ gyro_state->timestamp = iio_get_time_ns(indio_dev);
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+
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hid_sensor_push_data(indio_dev,
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gyro_state->gyro_val,
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- sizeof(gyro_state->gyro_val));
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+ sizeof(gyro_state->gyro_val),
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+ gyro_state->timestamp);
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+
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+ gyro_state->timestamp = 0;
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+ }
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return 0;
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}
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@@ -238,6 +248,13 @@ static int gyro_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
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*(u32 *)raw_data;
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ret = 0;
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break;
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+ case HID_USAGE_SENSOR_TIME_TIMESTAMP:
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+ gyro_state->timestamp =
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+ hid_sensor_convert_timestamp(
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+ &gyro_state->common_attributes,
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+ *(int64_t *)raw_data);
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+ ret = 0;
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+ break;
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default:
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break;
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}
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--
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2.7.4
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