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greybus: loopback: add tracker variables to hold firmware timestamps

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This patch adds tracker variables to hold the incoming firmware derived
timestamps where apbridge_latency_ts will contain the APBridge's view of
the UniPro turn-around time and gpbridge_latency_ts will contain the
GPBridge's view of it's own internal latency. Both values are reported
in microseconds.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Bryan O'Donoghue 2015-10-15 16:10:44 +01:00 committed by Greg Kroah-Hartman
parent fd58926ebe
commit e6227ee647
1 changed files with 2 additions and 0 deletions
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drivers/staging/greybus/loopback.c
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@ -83,6 +83,8 @@ struct gb_loopback {
u32 iteration_count;
u64 elapsed_nsecs;
u32 error;
u32 apbridge_latency_ts;
u32 gpbridge_latency_ts;
};
#define GB_LOOPBACK_FIFO_DEFAULT 8192