| # 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_BODY_DETECT_CHANGE when body |
| status is changed, in addition to adding an event in the motion sensor |
| FIFO queue. |
| |
| config PLATFORM_EC_BODY_DETECTION_NOTIFY_MKBP |
| bool "Notify host with MKBP event when the body on/off" |
| default n |
| help |
| Notify the host via EC_MKBP_FRONT_PROXIMITY |
| when the body status changed. |
| |
| 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 |
