diff options
| author | Sam Hurst <shurst@google.com> | 2019-11-07 17:55:55 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-11-21 23:41:16 +0000 |
| commit | 2e2dcb986bfe952cd9a87bf2cd3498fafde6e805 (patch) | |
| tree | 2d63c1ceb0ab7bad0f2e414b73243307dff87676 /fuzz | |
| parent | 154f597b8656fbcc16f6652f6fe8713943440939 (diff) | |
| download | chrome-ec-2e2dcb986bfe952cd9a87bf2cd3498fafde6e805.tar.gz | |
TCPMv2: Enable TCPC low power when port is looking for a connection
When the port is in a state where it is looking for a connection,
to save power, we should put the TCPC in its low power mode and
enable auto toggling. Low power mode can happen when DRP auto
toggling, acting as a SNK only, or acting as a SRC only.
BUG=chromium:1022217
BRANCH=none
TEST=make -j buildall
manual tests:
1: (S0) Nothing plugged in, port is drp and low power mode
2: (S5/S3/S0ix) Port is SNK only, and low power with nothing plugged in
3: (S3/S0ix) If TypeC sink was previously plugged in, port remains powered
4: (S5/S3/S0ix) TypeC source is recognized
5: (S3->S0) TypeC sink plugged in, port is powered when S0 is reached
Low power exit test:
Using this command from the AP console:
ectool i2cread 8 2 0x16 0x0d
Transfer failed with status=0x1 # This means the TCPC was asleep.
On the EC console:
2019-11-21 09:50:24 [315.235538 TCPC p1 init ready]
2019-11-21 09:50:24 [315.236048 TCPC p1 Exit Low Power Mode]
2019-11-21 09:50:24 [315.242837 TCPC p1 init ready]
2019-11-21 09:50:24 [315.243229 C1: DRPAutoToggle]
2019-11-21 09:50:24 [315.246471 C1: Unattached.SNK]
2019-11-21 09:50:24 [315.252504 C1: DRPAutoToggle]
2019-11-21 09:50:24 [315.362878 C1: LowPowerMode]
2019-11-21 09:50:24 [315.363314 TCPC p1 Enter Low Power Mode]
Change-Id: I7e853d05e0ece1f6b3031f17a18fcbf0d9a15a51
Signed-off-by: Sam Hurst <shurst@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1904974
Reviewed-by: Edward Hill <ecgh@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>
Diffstat (limited to 'fuzz')
| -rw-r--r-- | fuzz/usb_pd_fuzz.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fuzz/usb_pd_fuzz.c b/fuzz/usb_pd_fuzz.c index eeb72586b4..1d44921817 100644 --- a/fuzz/usb_pd_fuzz.c +++ b/fuzz/usb_pd_fuzz.c @@ -45,6 +45,11 @@ static int mock_tcpci_get_chip_info(int port, int live, return EC_ERROR_UNIMPLEMENTED; } +static __maybe_unused int mock_enter_low_power_mode(int port) +{ + return EC_SUCCESS; +} + #define MAX_TCPC_PAYLOAD 28 struct message { @@ -130,6 +135,9 @@ static const struct tcpm_drv mock_tcpm_drv = { .transmit = &mock_tcpm_transmit, .tcpc_alert = &mock_tcpc_alert, .get_chip_info = &mock_tcpci_get_chip_info, +#ifdef CONFIG_USB_PD_TCPC_LOW_POWER + .enter_low_power_mode = &mock_enter_low_power_mode, +#endif }; /* TCPC mux configuration */ |