608ab2fe99
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>