Add Power Optimize concept

This is a power optimization concept based on discussions in the
COVESA power optimization project

Signed-off-by: Erik Jaegervall <erik.jaegervall@se.bosch.com>

spec/ADAS/ADAS.vspec

@@ -285,3 +285,5 @@ EBA.IsEngaged:
   type: sensor
   description: Indicates if EBA is currently regulating brake pressure. True = Engaged. False = Not Engaged.
 
+#include include/PowerOptimize.vspec
+

spec/Body/Body.vspec

@@ -258,3 +258,5 @@ RearMainSpoilerPosition:
   min: 0
   max: 100
   description: Rear spoiler position, 0% = Spoiler fully stowed. 100% = Spoiler fully exposed.
+
+#include include/PowerOptimize.vspec

spec/Cabin/Cabin.vspec

@@ -185,3 +185,5 @@ Convertible.Status:
   type: sensor
   allowed: ['UNDEFINED', 'CLOSED', 'OPEN', 'CLOSING', 'OPENING', 'STALLED']
   description: Roof status on convertible vehicles.
+
+#include include/PowerOptimize.vspec

spec/Cabin/HVAC.vspec

@@ -43,3 +43,5 @@ AmbientAirTemperature:
   type: sensor
   unit: celsius
   description: Ambient air temperature inside the vehicle.
+
+#include include/PowerOptimize.vspec

spec/Cabin/Infotainment.vspec

@@ -188,7 +188,7 @@ HMI.DayNightMode:
   type: actuator
   allowed: ['DAY', 'NIGHT']
   description: Current display theme
-  
+
 SmartphoneProjection:
   type: branch
   description: All smartphone projection actions.
@@ -211,3 +211,5 @@ SmartphoneProjection.SupportedMode:
   type: attribute
   allowed: [ 'ANDROID_AUTO', 'APPLE_CARPLAY', 'MIRROR_LINK', 'OTHER' ]
   description: Supportable list for projection.
+
+#include include/PowerOptimize.vspec

spec/Powertrain/Powertrain.vspec

@@ -22,4 +22,5 @@ Type:
   description: Defines the powertrain type of the vehicle.
   comment: For vehicles with a combustion engine (including hybrids) more detailed information on fuels supported can
            be found in FuelSystem.SupportedFuelTypes and FuelSystem.SupportedFuels.
-
+
+#include include/PowerOptimize.vspec

spec/Vehicle/Vehicle.vspec

@@ -498,12 +498,14 @@ CurrentLocation.GNSSReceiver.MountingPosition.Y:
                Axis definitions according to ISO 8855. Origin at center of (first) rear axle.
                Positive values = left of origin. Negative values = right of origin.
                Left/Right is as seen from driver perspective, i.e. by a person looking forward.
-               
+
 CurrentLocation.GNSSReceiver.MountingPosition.Z:
   datatype: int16
   type: attribute
   unit: mm
   description: Mounting position of GNSS receiver on Z-axis.
                Axis definitions according to ISO 8855. Origin at center of (first) rear axle.
                Positive values = above center of rear axle. Negative values = below center of rear axle.
-
+
+#include include/PowerOptimize.vspec
+

spec/include/PowerOptimize.vspec

@@ -0,0 +1,109 @@
+#
+# (C) 2023 Robert Bosch GmbH
+#
+# All files and artifacts in this repository are licensed under the
+# provisions of the license provided by the LICENSE file in this repository.
+#
+
+#
+# Architectural Concept
+#
+# A vehicle may have a power optimization system to control functionality in order to extend available range of the vehicle.
+# It is assumed that the power optimization system does not know in detail which functionalities that exist in the vehicle
+# and which functionalities that can be turned off without causing interruptions to essential functionality.
+#
+# This is proposed to be handled by a distributed system where the power optimization system only gives recommendations
+# on power optimization for different areas.
+# The areas are in standard VSS catalog initially assumed to correspond to branches in VSS, and are represented as a signal in the corresponding branch,
+# like `Vehicle.[<Branch>.]*PowerOptimizeLevel`.
+# A global signal `Vehicle.PowerOptimizeLevel` also exists for features that does not have a matching signal in sub-branches.
+#
+# The signal can be added to a branch by including this file, like:
+#
+# "#include include/PowerOptimize.vspec"
+#
+#
+# Initially the standard VSS catalog contains the following level signals:
+#
+#Vehicle.PowerOptimizeLevel
+#Vehicle.Powertrain.PowerOptimizeLevel
+#Vehicle.Body.PowerOptimizeLevel
+#Vehicle.Cabin.PowerOptimizeLevel
+#Vehicle.Cabin.HVAC.PowerOptimizeLevel
+#Vehicle.Cabin.Infotainment.PowerOptimizeLevel
+#Vehicle.ADAS.PowerOptimizeLevel
+#
+# When there are multiple level signals in a subtree (like for the Cabin subtree) a feature may typically consider the "closest" level signal.
+#
+# Example 1: HVAC functionality (signals in branch Vehicle.Cabin.HVAC) may consider Vehicle.Cabin.HVAC.PowerOptimizeLevel
+# Example 2: Sunroof functionality (signals in branch Vehicle.Cabin.Sunroof) may consider Vehicle.Cabin.PowerOptimizeLevel 
+#            as there is no specific level signal in Vehicle.Cabin.Sunroof.
+# Example 3: Tire monitoring systems may consider Vehicle.PowerOptimizeLevel as there is no dedicated signal for Chassis branch.
+#
+# The power optimization level has a numerical value from 0 to 10.
+# Level 0 means that power optimization is not needed, all functionality can behave "normally".
+# Level 10 means that power consumption shall be minimized. Non-essential functionality shall be disabled.
+# Essential functionality to fulfill legal and safety requirements shall still be enabled.
+# Intermediate numbers (1-9) indicates intermediate states, where a higher number indicates a more aggressive power optimization policy.
+# 
+# This allows for subsystems to implement their own power saving logic.
+# It is totally up to the subsystem to know "what to do" for different power optimize levels.
+# It is also assumed that the subsystem knows what is required for legal and safety reasons and does not turn off
+# essential functionality regardless of power optimization level.
+# It is up to the OEM to configure subsystems to achieve the wanted behavior.
+# It is expected that power optimizations that are activated already at a low level have limited impact on the driver experience,
+# but power optimizations on higher levels will have significant impact on driver experience.
+#
+# A hypothetical example for Display/HMI brightness could be as follows
+#
+# There is a signal Vehicle.Cabin.Infotainment.HMI.Brightness that for example the driver could use to change HMI Brightness.
+# The signal has a range 0-100 percent, where 0% means the lowest value allowed from legal/safety-reasons as well as usability reasons.
+# To allow for energy optimization an OEM might want to change the actual brightness based on power optimization level for cabin.
+#
+# A possible schema could be as follows
+#
+
+#  REAL_MIN = 30 /* Lowest allowed value for safety/legal/convenience-reasons */
+#  REAL_MAX = 90 /* Maximum allowed value for safety/legal/convenience/technical-reasons */
+#  POWERSAVE_MAX_RELATIVE = 45 /* Maximum relative brightness during power optimize */
+#  POWERSAVE_LIMIT = 5 /* Reduce brightness if level is above this value */
+#
+#  if (Vehicle.Cabin.Infotainment.PowerOptimizeLevel > POWERSAVE_LIMIT):
+#    old_value = Vehicle.Cabin.Infotainment.HMI.Brightness;
+#    if (Vehicle.Cabin.Infotainment.HMI.Brightness > POWERSAVE_MAX_RELATIVE):
+#      Vehicle.Cabin.Infotainment.HMI.Brightness = POWERSAVE_MAX_RELATIVE;
+#  else
+#    // Revert to old value
+#    Vehicle.Cabin.Infotainment.HMI.Brightness = old_value;
+#
+#
+# Note that no additional VSS signals is added to represent wanted brightness at power optimization.
+# It is possible that a such signal may be needed in individual deployments, but if so it can be handled by a vehicle specific overlay.
+#
+# Customization
+#
+# In addition to power optimize signals added in standard VSS catalog a project/OEM may customize the model using overlays by:
+#
+# 1. Adding additional power optimize level signals
+#
+# For instance by adding `#include include/PowerOptimize.vspec` in additional files
+#
+# 2. Adding signals for supporting data
+#
+# In specific deployments there might be a need for private signals with additional data for the power optimization strategy used.
+# This could for instance be signals to specify maximum speed for a specific power optimization levels.
+
+##
+# Power Optimization
+##
+
+
+PowerOptimizeLevel:
+  datatype: uint8
+  type: actuator
+  min: 0
+  max: 10
+  description: Power optimization level for this branch/subsystem.
+               A higher number indicates more aggressive power optimization.
+               Level 0 indicates that all functionality is enabled, no power optimization enabled.
+               Level 10 indicates most aggressive power optimization mode, only essential functionality enabled.