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authorYe Xiang <xiang.ye@intel.com>2021-02-07 15:00:46 +0800
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2021-03-11 20:47:09 +0000
commit1c71a2863a0c56123e5a67880cf658083c0a0b1e (patch)
treee8b9c17153e31843f92ed7db15f83bf82386bdb5
parent4efd13c3c2bc9a5fc37fa34b7d4d2ec1bdf0d127 (diff)
iio: Add relative sensitivity support
Some hid sensors may use relative sensitivity such as als sensor. This patch adds relative sensitivity checking for all hid sensors. Signed-off-by: Ye Xiang <xiang.ye@intel.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Link: https://lore.kernel.org/r/20210207070048.23935-2-xiang.ye@intel.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
-rw-r--r--drivers/iio/common/hid-sensors/hid-sensor-attributes.c74
-rw-r--r--drivers/iio/industrialio-core.c1
-rw-r--r--include/linux/hid-sensor-hub.h5
-rw-r--r--include/linux/hid-sensor-ids.h1
-rw-r--r--include/linux/iio/types.h1
5 files changed, 78 insertions, 4 deletions
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
index d349ace2e33f..cb52b4fd6bf7 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
@@ -263,6 +263,29 @@ int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st,
}
EXPORT_SYMBOL(hid_sensor_read_raw_hyst_value);
+int hid_sensor_read_raw_hyst_rel_value(struct hid_sensor_common *st, int *val1,
+ int *val2)
+{
+ s32 value;
+ int ret;
+
+ ret = sensor_hub_get_feature(st->hsdev,
+ st->sensitivity_rel.report_id,
+ st->sensitivity_rel.index, sizeof(value),
+ &value);
+ if (ret < 0 || value < 0) {
+ *val1 = *val2 = 0;
+ return -EINVAL;
+ }
+
+ convert_from_vtf_format(value, st->sensitivity_rel.size,
+ st->sensitivity_rel.unit_expo, val1, val2);
+
+ return IIO_VAL_INT_PLUS_MICRO;
+}
+EXPORT_SYMBOL(hid_sensor_read_raw_hyst_rel_value);
+
+
int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st,
int val1, int val2)
{
@@ -294,6 +317,37 @@ int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st,
}
EXPORT_SYMBOL(hid_sensor_write_raw_hyst_value);
+int hid_sensor_write_raw_hyst_rel_value(struct hid_sensor_common *st,
+ int val1, int val2)
+{
+ s32 value;
+ int ret;
+
+ if (val1 < 0 || val2 < 0)
+ return -EINVAL;
+
+ value = convert_to_vtf_format(st->sensitivity_rel.size,
+ st->sensitivity_rel.unit_expo,
+ val1, val2);
+ ret = sensor_hub_set_feature(st->hsdev, st->sensitivity_rel.report_id,
+ st->sensitivity_rel.index, sizeof(value),
+ &value);
+ if (ret < 0 || value < 0)
+ return -EINVAL;
+
+ ret = sensor_hub_get_feature(st->hsdev,
+ st->sensitivity_rel.report_id,
+ st->sensitivity_rel.index, sizeof(value),
+ &value);
+ if (ret < 0 || value < 0)
+ return -EINVAL;
+
+ st->raw_hystersis = value;
+
+ return 0;
+}
+EXPORT_SYMBOL(hid_sensor_write_raw_hyst_rel_value);
+
/*
* This fuction applies the unit exponent to the scale.
* For example:
@@ -478,16 +532,28 @@ int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
HID_USAGE_SENSOR_PROP_SENSITIVITY_ABS,
&st->sensitivity);
+ sensor_hub_input_get_attribute_info(hsdev,
+ HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_PROP_SENSITIVITY_REL_PCT,
+ &st->sensitivity_rel);
/*
* Set Sensitivity field ids, when there is no individual modifier, will
- * check absolute sensitivity of data field
+ * check absolute sensitivity and relative sensitivity of data field
*/
- for (i = 0; i < sensitivity_addresses_len && st->sensitivity.index < 0; i++) {
- sensor_hub_input_get_attribute_info(hsdev,
- HID_FEATURE_REPORT, usage_id,
+ for (i = 0; i < sensitivity_addresses_len; i++) {
+ if (st->sensitivity.index < 0)
+ sensor_hub_input_get_attribute_info(
+ hsdev, HID_FEATURE_REPORT, usage_id,
HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
sensitivity_addresses[i],
&st->sensitivity);
+
+ if (st->sensitivity_rel.index < 0)
+ sensor_hub_input_get_attribute_info(
+ hsdev, HID_FEATURE_REPORT, usage_id,
+ HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_REL_PCT |
+ sensitivity_addresses[i],
+ &st->sensitivity_rel);
}
st->raw_hystersis = -1;
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 2e2970f3e21c..cb2735d2ae4b 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -157,6 +157,7 @@ static const char * const iio_chan_info_postfix[] = {
[IIO_CHAN_INFO_PHASE] = "phase",
[IIO_CHAN_INFO_HARDWAREGAIN] = "hardwaregain",
[IIO_CHAN_INFO_HYSTERESIS] = "hysteresis",
+ [IIO_CHAN_INFO_HYSTERESIS_RELATIVE] = "hysteresis_relative",
[IIO_CHAN_INFO_INT_TIME] = "integration_time",
[IIO_CHAN_INFO_ENABLE] = "en",
[IIO_CHAN_INFO_CALIBHEIGHT] = "calibheight",
diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h
index 637ec53a98a1..c27329e2a5ad 100644
--- a/include/linux/hid-sensor-hub.h
+++ b/include/linux/hid-sensor-hub.h
@@ -231,6 +231,7 @@ struct hid_sensor_common {
struct hid_sensor_hub_attribute_info report_state;
struct hid_sensor_hub_attribute_info power_state;
struct hid_sensor_hub_attribute_info sensitivity;
+ struct hid_sensor_hub_attribute_info sensitivity_rel;
struct hid_sensor_hub_attribute_info report_latency;
struct work_struct work;
};
@@ -253,8 +254,12 @@ int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
u32 sensitivity_addresses_len);
int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st,
int val1, int val2);
+int hid_sensor_write_raw_hyst_rel_value(struct hid_sensor_common *st, int val1,
+ int val2);
int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st,
int *val1, int *val2);
+int hid_sensor_read_raw_hyst_rel_value(struct hid_sensor_common *st,
+ int *val1, int *val2);
int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st,
int val1, int val2);
int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st,
diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
index 3bbdbccc5805..ac631159403a 100644
--- a/include/linux/hid-sensor-ids.h
+++ b/include/linux/hid-sensor-ids.h
@@ -149,6 +149,7 @@
/* Per data field properties */
#define HID_USAGE_SENSOR_DATA_MOD_NONE 0x00
#define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS 0x1000
+#define HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_REL_PCT 0xE000
/* Power state enumerations */
#define HID_USAGE_SENSOR_PROP_POWER_STATE_UNDEFINED_ENUM 0x200850
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 1e3ed6f55bca..5aa7f66d4345 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -50,6 +50,7 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_PHASE,
IIO_CHAN_INFO_HARDWAREGAIN,
IIO_CHAN_INFO_HYSTERESIS,
+ IIO_CHAN_INFO_HYSTERESIS_RELATIVE,
IIO_CHAN_INFO_INT_TIME,
IIO_CHAN_INFO_ENABLE,
IIO_CHAN_INFO_CALIBHEIGHT,