diff options
| author | Alec Berg <alecaberg@chromium.org> | 2014-11-04 14:34:00 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-11-11 00:10:35 +0000 |
| commit | 2c83bfc7da317e254dedd32a0bea7763345d3510 (patch) | |
| tree | 1b060376d6032a61ef19870165cfd9f5b1e4be7a /common | |
| parent | 3fd064745ba37a626df1ed34a79765821e259a46 (diff) | |
| download | chrome-ec-2c83bfc7da317e254dedd32a0bea7763345d3510.tar.gz | |
pd: add delay for power supply startup before sending src cap
Add delay for power supply startup time before sending source
capabilities packets.
BUG=none
BRANCH=samus
TEST=load on samus, plug in C to A receptacle adapter, see that
VBUS enabled before source cap packet sent.
Change-Id: If3b595e1671d089e859693b420841a639fdb146b
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/227423
Diffstat (limited to 'common')
| -rw-r--r-- | common/usb_pd_protocol.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/common/usb_pd_protocol.c b/common/usb_pd_protocol.c index 2e15e8bc7b..01a997366c 100644 --- a/common/usb_pd_protocol.c +++ b/common/usb_pd_protocol.c @@ -1411,7 +1411,7 @@ void pd_task(void) pd_set_vconn(port, pd[port].polarity, 1); #endif - set_state(port, PD_STATE_SRC_DISCOVERY); + set_state(port, PD_STATE_SRC_STARTUP); caps_count = 0; #ifdef CONFIG_USB_PD_DUAL_ROLE /* Keep VBUS up for the hold period */ @@ -1433,6 +1433,15 @@ void pd_task(void) } #endif break; + case PD_STATE_SRC_STARTUP: + /* Wait for power source to enable */ + if (pd[port].last_state != pd[port].task_state) + set_state_timeout( + port, + get_time().val + + PD_POWER_SUPPLY_TRANSITION_DELAY, + PD_STATE_SRC_DISCOVERY); + break; case PD_STATE_SRC_DISCOVERY: /* Send source cap some minimum number of times */ if (caps_count < PD_CAPS_COUNT) { @@ -2169,8 +2178,9 @@ static int command_pd(int argc, char **argv) "SNK_SWAP_SNK_DISABLE", "SNK_SWAP_SRC_DISABLE", "SNK_SWAP_STANDBY", "SNK_SWAP_COMPLETE", #endif /* CONFIG_USB_PD_DUAL_ROLE */ - "SRC_DISCONNECTED", "SRC_DISCOVERY", "SRC_NEGOCIATE", - "SRC_ACCEPTED", "SRC_TRANSITION", "SRC_READY", + "SRC_DISCONNECTED", "SRC_STARTUP", "SRC_DISCOVERY", + "SRC_NEGOCIATE", "SRC_ACCEPTED", "SRC_TRANSITION", + "SRC_READY", #ifdef CONFIG_USB_PD_DUAL_ROLE "SRC_SWAP_INIT", "SRC_SWAP_SNK_DISABLE", "SRC_SWAP_SRC_DISABLE", "SRC_SWAP_STANDBY", |