greybus: control: Add TimeSync control commands
Simple addition of the TimeSync commands defined in the specification.
Note for the case of timesync_authoritative we're passing the request
structure directly so as not to have to pass eight parameters into the
function.
Adds:
- control.c::timesync_enable(u8 count, u64 frame_time,
u32 strobe_delay, u32 refclk)
Informs an Interface to expect count TimeSync strobe pulses with
strobe_delay milliseconds delay between each strobe. Once enabled
an Interface may not enter a low-power mode which will result in the
reference timer used to track time switching off.
- control.c::timesync_disable(void)
Commands an Interface to immediately halt TimeSync logic. This will allow
an Interface to transition into low-power modes where the reference time
being used for TimeSync may switch off.
- control.c::timesync_authoritative(u64 *frame_time, u8 count)
Used by the AP Module to inform an Interface of the authoritative
TimeSync clock-master time at each strobe pulse. Down-stream clock slaves
shall adjust their local frame-time appropriately based on the
diseminated authoritative frame-time.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2 files changed
tree: cbc9ebcccfe0af736ca35a99c0ffa4f0c6dccf6c
- drivers/