From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Date: Thu, 15 Oct 2015 15:10:44 +0000 (+0100)
Subject: greybus: loopback: add tracker variables to hold firmware timestamps
X-Git-Tag: v5.15~12752^2~378^2~21^2~1112
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e6227ee64782e1cda88a70512ac2b0ae8fda2203;p=platform%2Fkernel%2Flinux-starfive.git

greybus: loopback: add tracker variables to hold firmware timestamps

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>
---

diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c
index 95cba82..d2a88af 100644
--- a/drivers/staging/greybus/loopback.c
+++ b/drivers/staging/greybus/loopback.c
@@ -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