blob: 85386a68c123fb69d4c48e3b67dff8cbb4b6982e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
# Copyright 2022 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
menuconfig PLATFORM_EC_BODY_DETECTION
bool "Sensor body detection"
help
Enable the body detection function.
The Power Reduction Algorithm is based on the Motion Detector
output of In Motion (on body) state or Stationary (off body) state.
The input of the Motion Detector is the X and Y axis signal
from an accelerometer.
if PLATFORM_EC_BODY_DETECTION
config PLATFORM_EC_BODY_DETECTION_MAX_WINDOW_SIZE
int "Maximal sensor data rate"
default 250
help
Sets the maximum sensor data rate, in Hz. Note that larger data rate
values consume more memory and computing resource.
config PLATFORM_EC_BODY_DETECTION_VAR_THRESHOLD
int "The threshold of acceleration variance for confidence calculation"
default 550
help
The unit is (mm/s^2)^2
The motion confidence is calculated if the variance is within
variance_threshold +/- confidence_delta. Otherwise, if variance is
too high/low, confidence will be 100%/0%
config PLATFORM_EC_BODY_DETECTION_CONFIDENCE_DELTA
int "The delta of acceleration variance for confidence calculation"
default 525
help
The unit is (mm/s^2)^2
The motion confidence is calculated if the variance is within
variance_threshold +/- confidence_delta. Otherwise, if variance is
too high/low, confidence will be 100%/0%
config PLATFORM_EC_BODY_DETECTION_VAR_NOISE_FACTOR
int "How much noise affects the threshold of variance"
default 120
help
The unit is percentage
This is used for mitigate the effect of the noise from the sensor.
If set to 100%, the average noise is canceled out. This is set to
120% by default because the noise might get larger than average
sometimes.
config PLATFORM_EC_BODY_DETECTION_ON_BODY_CON
int "The confidence limit of on_body"
default 50
help
The unit is percentage
Higher the value, more diffcult to enter the on-body from off-body
config PLATFORM_EC_BODY_DETECTION_OFF_BODY_CON
int "The confidence limit of off body"
default 10
help
The unit is percentage
Lower the value, more diffcult to enter the off-body from on-body.
Should be set less than the PLATFORM_EC_BODY_DETECTION_ON_BODY_CON
config PLATFORM_EC_BODY_DETECTION_STATIONARY_DURATION
int "The threshold duration to change to off_body"
default 15
help
The unit is seconds
How long should we stay in on-body state before entering to off-body
state when the motion confidence is less than
PLATFORM_EC_BODY_DETECTION_OFF_BODY_CON
config PLATFORM_EC_BODY_DETECTION_NOTIFY_MODE_CHANGE
bool "Notify host with a specific host event when body status is changed"
default n
help
Notify the host via SCI events EC_HOST_EVENT_MODE_CHANGE when body
status is changed, in addition to adding an event in the motion sensor
FIFO queue.
config PLATFORM_EC_BODY_DETECTION_ALWAYS_ENABLE_IN_S0
bool "Always enable body detection function in S0"
default n
help
Always enable the body detection function in S0
w/o the host command
endif # PLATFORM_EC_BODY_DETECTION
|
