Add additional flag to read in async mode. In this mode the caller
need to register for events and match attribute usage id for result.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
---
drivers/hid/hid-sensor-hub.c | 15 ++++++++++++++-
include/linux/hid-sensor-hub.h | 19 +++++++++++++------
2 files changed, 27 insertions(+), 7 deletions(-)
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index 8d177f0..84290e5 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -269,13 +269,26 @@ EXPORT_SYMBOL_GPL(sensor_hub_get_feature);
int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
u32 usage_id,
- u32 attr_usage_id, u32 report_id)
+ u32 attr_usage_id, u32 report_id,
+ enum sensor_hub_read_flags flag)
{
struct sensor_hub_data *data = hid_get_drvdata(hsdev->hdev);
unsigned long flags;
struct hid_report *report;
int ret_val = 0;
+ if (flag == SENSOR_HUB_ASYNC) {
+ report = sensor_hub_report(report_id, hsdev->hdev,
+ HID_INPUT_REPORT);
+ if (!report)
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ hid_hw_request(hsdev->hdev, report, HID_REQ_GET_REPORT);
+ mutex_unlock(&data->mutex);
+ return 0;
+ }
+
mutex_lock(&hsdev->mutex);
memset(&hsdev->pending, 0, sizeof(hsdev->pending));
init_completion(&hsdev->pending.ready);
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index a51c768..d48e91f 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -171,20 +171,27 @@ int sensor_hub_input_get_attribute_info(struct hid_sensor_hub_device *hsdev,
struct hid_sensor_hub_attribute_info *info);
/**
-* sensor_hub_input_attr_get_raw_value() - Synchronous read request
+* sensor_hub_input_attr_get_raw_value() - Attribute read request
* @hsdev: Hub device instance.
* @usage_id: Attribute usage id of parent physical device as per spec
* @attr_usage_id: Attribute usage id as per spec
* @report_id: Report id to look for
+* @flag: Synchronour or asynchronous read
*
-* Issues a synchronous read request for an input attribute. Returns
-* data upto 32 bits. Since client can get events, so this call should
-* not be used for data paths, this will impact performance.
+* Issues a synchronous or asynchronous read request for an input attribute.
+* Returns data upto 32 bits.
*/
+enum sensor_hub_read_flags {
+ SENSOR_HUB_SYNC,
+ SENSOR_HUB_ASYNC,
+};
+
int sensor_hub_input_attr_get_raw_value(struct hid_sensor_hub_device *hsdev,
- u32 usage_id,
- u32 attr_usage_id, u32 report_id);
+ u32 usage_id,
+ u32 attr_usage_id, u32 report_id,
+ enum sensor_hub_read_flags flag
+);
/**
* sensor_hub_set_feature() - Feature set request
* @hsdev: Hub device instance.
--
1.9.1
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