PROTOCOLS
Clock
Defined in fuchsia.hardware.clock/clock.fidl
Used for driver-to-driver communication.
Disable
Disables (gates) this clock.
Drivers should call this method to indicate to the clock subsystem that
a particular clock signal is no longer necessary.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support Disable
Returns ZX_ERR_INTERNAL if the operation failed for any other reason.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
payload |
Clock_Disable_Result
|
Enable
Enables (ungates) this clock.
Drivers must call enable on all clocks they depend upon.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support Enable.
Returns ZX_ERR_TIMED_OUT if an operation timed out (for instance, a PLL was unable to lock).
Returns ZX_ERR_INTERNAL if the operation failed for any other reason.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
payload |
Clock_Enable_Result
|
GetInput
Returns the index of the current input of this clock.
GetInput shall not alter the state of the clock tree in any way.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support GetInput.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
payload |
Clock_GetInput_Result
|
GetNumInputs
Returns the number of inputs this clock has.
Any value between 0 and UINT32_MAX is a valid return for this method.
A Root Oscillator may return 0 for instance, if it has no inputs.
GetNumInputs shall not alter the state of the clock tree in any way.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support GetNumInputs.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
payload |
Clock_GetNumInputs_Result
|
GetRate
Returns the current rate that a given clock is running at.
GetRate shall not alter the state of the clock tree in any way.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support GetRate .
Request
<EMPTY>
Response
| Name | Type |
|---|---|
payload |
Clock_GetRate_Result
|
IsEnabled
Returns true if a given clock is running.
May query the hardware or return a cached value.
IsEnabled shall not alter the state of the clock tree in any way.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support IsEnabled.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
payload |
Clock_IsEnabled_Result
|
QuerySupportedRate
Query the hardware for the highest supported rate that does not
exceed hz_in.
QuerySupportedRate shall not alter the state of the clock tree in any way.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support QuerySupportedRate.
Returns ZX_ERR_OUT_OF_RANGE if a suitable rate could not be found.
Request
| Name | Type |
|---|---|
hz_in |
uint64
|
Response
| Name | Type |
|---|---|
payload |
Clock_QuerySupportedRate_Result
|
SetInput
Sets the input of this clock by index. I.e. by selecting a mux.
This clock has N inputs defined 0 through N-1, which are valid arguemts
as the index to SetInput.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support SetInput
Returns ZX_ERR_OUT_OF_RANGE if idx is outside of the range supplied by GetNumInputs.
Returns ZX_ERR_INTERNAL if the operation failed for any other reason.
Request
| Name | Type |
|---|---|
idx |
uint32
|
Response
| Name | Type |
|---|---|
payload |
Clock_SetInput_Result
|
SetRate
Attempt to set the rate of the clock provider.
Returns ZX_ERR_NOT_SUPPORTED if this clock type does not support SetRate
Returns ZX_ERR_INVALID_ARGS if the requested rate is not one that is reported as supported by QuerySupportedRate.
Returns ZX_ERR_TIMED_OUT if an operation timed out (for instance, a PLL was unable to lock).
Returns ZX_ERR_INTERNAL if the operation failed for any other reason.
Request
| Name | Type |
|---|---|
hz |
uint64
|
Response
| Name | Type |
|---|---|
payload |
Clock_SetRate_Result
|
STRUCTS
Clock_Disable_Response
Defined in fuchsia.hardware.clock/clock.fidl
<EMPTY>
Clock_Enable_Response
Defined in fuchsia.hardware.clock/clock.fidl
<EMPTY>
Clock_GetInput_Response
Defined in fuchsia.hardware.clock/clock.fidl
| Field | Type | Description | Default |
|---|---|---|---|
index |
uint32
|
No default |
Clock_GetNumInputs_Response
Defined in fuchsia.hardware.clock/clock.fidl
| Field | Type | Description | Default |
|---|---|---|---|
n |
uint32
|
No default |
Clock_GetRate_Response
Defined in fuchsia.hardware.clock/clock.fidl
| Field | Type | Description | Default |
|---|---|---|---|
hz |
uint64
|
No default |
Clock_IsEnabled_Response
Defined in fuchsia.hardware.clock/clock.fidl
| Field | Type | Description | Default |
|---|---|---|---|
enabled |
bool
|
No default |
Clock_QuerySupportedRate_Response
Defined in fuchsia.hardware.clock/clock.fidl
| Field | Type | Description | Default |
|---|---|---|---|
hz_out |
uint64
|
No default |
Clock_SetInput_Response
Defined in fuchsia.hardware.clock/clock.fidl
<EMPTY>
Clock_SetRate_Response
Defined in fuchsia.hardware.clock/clock.fidl
<EMPTY>
UNIONS
Clock_Disable_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_Disable_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_Enable_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_Enable_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_GetInput_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_GetInput_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_GetNumInputs_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_GetNumInputs_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_GetRate_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_GetRate_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_IsEnabled_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_IsEnabled_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_QuerySupportedRate_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_QuerySupportedRate_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_SetInput_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_SetInput_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
Clock_SetRate_Result strict
Defined in fuchsia.hardware.clock/clock.fidl
| Ordinal | Variant | Type | Description |
|---|---|---|---|
1 |
response |
Clock_SetRate_Response
|
|
2 |
err |
zx/Status
|
|
3 |
framework_err |
internal
|
SERVICES
Service
Defined in fuchsia.hardware.clock/clock.fidl
| Name | Type | Transport |
|---|---|---|
| clock |
fuchsia.hardware.clock/Clock
|
Channel |