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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2017-04-07 17:13:17 -0700
committerJonathan Cameron <jic23@kernel.org>2017-04-08 15:13:36 +0100
commit5d9854eaea776441b38a9a45b4e6879524c4f48c (patch)
tree305609e2526bcb3432b5b0abc98efe074c822d48 /include/linux/hid-sensor-hub.h
parenta6d361404d81a03107a3475876afc22e1b84d5de (diff)
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iio: hid-sensor: Store restore poll and hysteresis on S3
This change undo the change done by 'commit 3bec24747446 ("iio: hid-sensor-trigger: Change get poll value function order to avoid sensor properties losing after resume from S3")' as this breaks some USB/i2c sensor hubs. Instead of relying on HW for restoring poll and hysteresis, driver stores and restores on resume (S3). In this way user space modified settings are not lost for any kind of sensor hub behavior. In this change, whenever user space modifies sampling frequency or hysteresis driver will get the feature value from the hub and store in the per device hid_sensor_common data structure. On resume callback from S3, system will set the feature to sensor hub, if user space ever modified the feature value. Fixes: 3bec24747446 ("iio: hid-sensor-trigger: Change get poll value function order to avoid sensor properties losing after resume from S3") Reported-by: Ritesh Raj Sarraf <rrs@researchut.com> Tested-by: Ritesh Raj Sarraf <rrs@researchut.com> Tested-by: Song, Hongyan <hongyan.song@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/hid-sensor-hub.h')
-rw-r--r--include/linux/hid-sensor-hub.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index 7ef111d3ecc5..f32d7c392c1e 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -231,6 +231,8 @@ struct hid_sensor_common {
unsigned usage_id;
atomic_t data_ready;
atomic_t user_requested_state;
+ int poll_interval;
+ int raw_hystersis;
struct iio_trigger *trigger;
int timestamp_ns_scale;
struct hid_sensor_hub_attribute_info poll;