PROTOCOLS
Power
Defined in fuchsia.hardware.power/power.fidl
GetCurrentVoltage
Get current voltage in uV.
Request
| Name | Type |
|---|---|
index |
uint32
|
Response
| Name | Type |
|---|---|
s |
zx/status
|
current_voltage |
uint32
|
GetPowerDomainStatus
Get power domain status
Request
<EMPTY>
Response
| Name | Type |
|---|---|
s |
zx/status
|
status |
PowerDomainStatus
|
GetSupportedVoltageRange
Get Supported Voltage Range. min and max are in micorVolts(uV)
Request
<EMPTY>
Response
| Name | Type |
|---|---|
s |
zx/status
|
min |
uint32
|
max |
uint32
|
ReadPmicCtrlReg
Read ctrl register of PMIC
Request
| Name | Type |
|---|---|
reg_addr |
uint32
|
Response
| Name | Type |
|---|---|
s |
zx/status
|
value |
uint32
|
RegisterPowerDomain
Register the callee for this power domain. The callee will be registered until UnregisterPowerDomain is called. Any voltage changes to the power domain will be made considering the min_needed_voltage(in uV) and max_supported_voltage(in uV) published here. If voltages mentioned are out of supported voltage range of domain(obtained by calling GetSupportedVoltageRange), the callee will be registered with the supported voltage range.
Request
| Name | Type |
|---|---|
min_needed_voltage |
uint32
|
max_supported_voltage |
uint32
|
Response
| Name | Type |
|---|---|
s |
zx/status
|
RequestVoltage
Request a particular voltage. The actual_voltage is the voltage that the power domain is transitioned to after considering supported voltage ranges of all the registered dependents. "voltage" should be in uV.
Request
| Name | Type |
|---|---|
voltage |
uint32
|
Response
| Name | Type |
|---|---|
s |
zx/status
|
actual_voltage |
uint32
|
UnregisterPowerDomain
Unregister the callee for this power domain. The callee will no longer be considered as a dependent of this power domain.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
s |
zx/status
|
WritePmicCtrlReg
Write to ctrl register of PMIC
Request
| Name | Type |
|---|---|
reg_addr |
uint32
|
value |
uint32
|
Response
| Name | Type |
|---|---|
s |
zx/status
|
Source
Defined in fuchsia.hardware.power/power.fidl
GetBatteryInfo
Get battery info. Only supported if type == PowerType::BATTERY.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
status |
zx/status
|
info |
BatteryInfo
|
GetPowerInfo
Get device info.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
status |
zx/status
|
info |
SourceInfo
|
GetStateChangeEvent
Get an event to receive state change notifications on. ZX_USER_SIGNAL_0 is
asserted when power_info_t.state is changed. It is deasserted when the
state is read via GetPowerInfo.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
status |
zx/status
|
handle |
handle<event>
|
STRUCTS
BatteryInfo
Defined in fuchsia.hardware.power/power.fidl
| Field | Type | Description | Default |
|---|---|---|---|
unit |
BatteryUnit
|
capacity unit. all voltage fields are in millivolts |
No default |
design_capacity |
uint32
|
nominal capacity of a new battery |
No default |
last_full_capacity |
uint32
|
predicted battery capacity when fully charged |
No default |
design_voltage |
uint32
|
nominal voltage of a new battery |
No default |
capacity_warning |
uint32
|
capacity when the device will generate a warning notification |
No default |
capacity_low |
uint32
|
capacity when the device will generate a low battery notification |
No default |
capacity_granularity_low_warning |
uint32
|
the smallest increment the battery is capable of measuring between the low and warning capacities |
No default |
capacity_granularity_warning_full |
uint32
|
the smallest increment the battery is capable of measuring between the low and warning capacities |
No default |
present_rate |
int32
|
below fields are in units specified the |
No default |
remaining_capacity |
uint32
|
No default | |
present_voltage |
uint32
|
No default |
SourceInfo
Defined in fuchsia.hardware.power/power.fidl
| Field | Type | Description | Default |
|---|---|---|---|
type |
PowerType
|
No default | |
state |
uint8
|
No default |
ENUMS
BatteryUnit strict
Type: uint32
Defined in fuchsia.hardware.power/power.fidl
| Name | Value | Description |
|---|---|---|
MW |
0 |
Milliwatts |
MA |
1 |
Milliamps |
PowerDomainStatus strict
Type: uint8
Defined in fuchsia.hardware.power/power.fidl
| Name | Value | Description |
|---|---|---|
DISABLED |
1 |
|
ENABLED |
2 |
PowerType strict
Type: uint8
Defined in fuchsia.hardware.power/power.fidl
| Name | Value | Description |
|---|---|---|
AC |
0 |
|
BATTERY |
1 |
CONSTANTS
| Name | Value | Type | Description |
|---|---|---|---|
| POWER_STATE_CHARGING |
4
|
uint8 |
|
| POWER_STATE_CRITICAL |
8
|
uint8 |
|
| POWER_STATE_DISCHARGING |
2
|
uint8 |
|
| POWER_STATE_ONLINE |
1
|
uint8 |