greybus: es1,es2: add USB vendor command to timestamp

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As part of an effort to get deep inspection of latencies throughout the
greybus network including HSIC, UniPro and firmware incurred latencies a
new command to the APBridge to tag a known offset with timestamping data
has been introduced. This patch adds that code to the es1 and es2 drivers.

- latency_tag_enable
- latency_tag_disable

Respectively send the enable/disable command to APBridge on a per-CPort
basis. This allows only specified cports to have timestamping data added by
APBridge, leaving any CPort not specifically enabled untouched.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

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This commit is contained in:

Bryan O'Donoghue 2015-10-15 16:10:41 +01:00 • committed by Greg Kroah-Hartman

parent 29a167ec87

commit 608ab2fe99

3 changed files with 111 additions and 0 deletions

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54

drivers/staging/greybus/es1.c

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54

drivers/staging/greybus/es2.c

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3

drivers/staging/greybus/greybus.h

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