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| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2017-10-13 08:24:12 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2017-10-30 17:04:43 +0000 |
| commit | de068bff83a77ba2977f34a589e99dd3e07614fd (patch) | |
| tree | eb2d90f4a80c83767f1a792e3deb47855b20566e | |
| parent | 0e5abb63f262e51a771a54f1b53cc896e4bd9433 (diff) | |
| download | chrome-ec-de068bff83a77ba2977f34a589e99dd3e07614fd.tar.gz | |
tcpc: Don't retry sending of source caps
TCPM will retry sending of source caps on failure and retrying in TCPC
will cause us to violate PD_T_SEND_SOURCE_CAP.
BUG=None
TEST=Attach servo_v4 to twinkie, verify source caps are sent in ~100ms
intervals and not in bursts of four.
BRANCH=servo_v4
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: I3264e5578afbde7b9d2c003b6744974329a253d4
Reviewed-on: https://chromium-review.googlesource.com/719729
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/739992
| -rw-r--r-- | common/usb_pd_tcpc.c | 4 | ||||
| -rw-r--r-- | test/usb_pd.c | 5 |
2 files changed, 8 insertions, 1 deletions
diff --git a/common/usb_pd_tcpc.c b/common/usb_pd_tcpc.c index a8a4c94e67..8ac51f63e2 100644 --- a/common/usb_pd_tcpc.c +++ b/common/usb_pd_tcpc.c @@ -362,9 +362,11 @@ static int send_validate_message(int port, uint16_t header, static uint32_t payload[7]; uint8_t expected_msg_id = PD_HEADER_ID(header); uint8_t cnt = PD_HEADER_CNT(header); + int retries = PD_HEADER_TYPE(header) == PD_DATA_SOURCE_CAP ? + 0 : PD_RETRY_COUNT; /* retry 3 times if we are not getting a valid answer */ - for (r = 0; r <= PD_RETRY_COUNT; r++) { + for (r = 0; r <= retries; r++) { int bit_len, head; /* write the encoded packet in the transmission buffer */ bit_len = prepare_message(port, header, cnt, data); diff --git a/test/usb_pd.c b/test/usb_pd.c index ea68c66599..3368484a24 100644 --- a/test/usb_pd.c +++ b/test/usb_pd.c @@ -212,8 +212,13 @@ static int test_sink(void) TEST_ASSERT(pd_test_tx_msg_verify_crc(1)); TEST_ASSERT(pd_test_tx_msg_verify_eop(1)); + /* Wake from pd_start_tx */ + task_wake(PD_PORT_TO_TASK_ID(1)); + usleep(30 * MSEC); + /* Looks good. Ack the source cap. */ simulate_goodcrc(1, PD_ROLE_SINK, pd_port[1].msg_tx_id); + /* Wake from pd_rx_start */ task_wake(PD_PORT_TO_TASK_ID(1)); usleep(30 * MSEC); inc_tx_id(1); |