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# Copyright 2021 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
menuconfig PLATFORM_EC_MOTIONSENSE
bool "Motion Sense"
select HAS_TASK_MOTIONSENSE
help
Enable motion sense task. The task collects data from available sensors
and report them to AP. Besides the task reports the sensor data to AP.
Based on the data, it also does other things like calculating lid angle
and detect tablet mode.
config PLATFORM_EC_ACCEL_FIFO
bool "Sensor FIFO"
help
Enable this to add the sensor FIFO used by sensor device drivers to fill.
Using FIFO reduces power consumption since it reduces the number of
AP wake-ups.
if PLATFORM_EC_ACCEL_FIFO
config PLATFORM_EC_ACCEL_FIFO_SIZE
int "Motion Sense FIFO Size"
default 256
help
This sets the size of the sensor FIFO, must be a power of 2.
config PLATFORM_EC_ACCEL_FIFO_THRES
int "FIFO Threshold"
default 85 # (PLATFORM_EC_ACCEL_FIFO_SIZE / 3)
help
This sets the amount of free entries that trigger an interrupt to the AP.
endif # PLATFORM_EC_ACCEL_FIFO
config PLATFORM_EC_SENSOR_TIGHT_TIMESTAMPS
bool "Extra Sensor Timestamp"
help
If this is defined, motion_sense sends
sensor events to the AP in the format
+-----------+
| Timestamp |
| Payload |
| Timestamp |
| Payload |
| ... |
+-----------+
If this is not defined, the events will be sent in the format
+-----------+
| Payload |
| Payload |
| Payload |
| ... |
| Timestamp |
+-----------+
The former format enables improved filtering of sensor event
timestamps on the AP, but comes with stricter jitter requirements.
config PLATFORM_EC_ACCEL_INTERRUPTS
bool "Accelerometer Interrupts"
help
Enable this to allow a sensor driver to send an event to motion task when
the sensor gets the data ready interrupt. On the event, motion task calls
the driver's irq_handler to collect data.
# TODO(b/173507858) config PLATFORM_EC_MOTION_FILL_LPC_SENSE_DATA
# if PLATFORM_EC_MOTION_FILL_LPC_SENSE_DATA
#endif # PLATFORM_EC_MOTION_FILL_LPC_SENSE_DATA
config PLATFORM_EC_ALS
bool "Ambient Light Sensor(ALS)"
default y if HAS_TASK_ALS
help
Enable this to indicate there's at least one or more ALS devices available.
If PLATFORM_EC_MOTION_FILL_LPC_SENSE_DATA is set, then motion task updates
the designated part of EC memmap with the ALS data. The updating EC memmap
can be also done by the dedicated ALS task with HAS_ALS_TASK set.
Number of ALS entries reserved in EC memmap are defined by EC_ALS_ENTRIES
in ec_commands.h.
if PLATFORM_EC_ALS
config PLATFORM_EC_ALS_COUNT
int "Number of ALS devices"
default 1
help
This sets the number of ALS devices. This should be less than or equal to
EC_ALS_ENTRIES in ec_commands.h
TODO(b/173507858) move this to device tree
endif # PLATFORM_EC_ALS
config PLATFORM_EC_DYNAMIC_MOTION_SENSOR_COUNT
bool "Dynamic Motion Sensor Count"
help
Enable this to allow changing motion sensor count dynamically.
config PLATFORM_EC_LID_ANGLE
bool "Lid Angle Sensor"
help
Enable this to detect lid angle with two accelerometers. The andgle
calculation requires the information about which sensor is on the lid
and which one is on the base. The calculated lid angle is used to
decide start/stop other peripherals like stop/start keyboard scanning.
# TODO(b/173507858): add more detail after .dts change
if PLATFORM_EC_LID_ANGLE
config PLATFORM_EC_TABLET_MODE
bool "Tablet Mode"
help
Enable this for a device which can be a tablet as well as a clamshell.
Tablet mode detection is done with current lid angle.
config PLATFORM_EC_GMR_TABLET_MODE
bool "Giant Magnetoresistance(GMR) Tablet Mode"
help
Enable this to use GMR sensor to detect tablet mode.
It requires to set GMR_TABLET_MODE_GPIO_L to map the interrupt from
the sensor and direct its mapping to gmr_tablet_switch_isr
in common/tablet_mode.c.
endif # PLATFORM_EC_LID_ANGLE
rsource "Kconfig.sensor_devices"
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