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pd: add hard reset counter to sink hard reset recovery state

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The new hard reset recovery state was endlessly sending hard resets.
Added in hard reset counter to cap the number of hard resets for
a sink.

BUG=none
BRANCH=samus
TEST=test with non-PD type-C charger and verify that we only send
two hard resets and set the appropriate input current limit after
the hard resets.

Change-Id: I95a3739be28ad2a5fed245aad021bcd6d51d94b1
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/233754
Reviewed-by: Todd Broch <tbroch@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Alec Berg
2014-12-05 20:33:58 -08:00
committed by chrome-internal-fetch
parent 5e2409745d
commit 4b8be2f778
1 changed files with 7 additions and 2 deletions
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9
common/usb_pd_protocol.c
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@@ -1938,7 +1938,10 @@ void pd_task(void)
set_state_timeout(port,
get_time().val +
PD_T_SAFE_0V,
PD_STATE_HARD_RESET_SEND);
hard_reset_count <
PD_HARD_RESET_COUNT ?
PD_STATE_HARD_RESET_SEND :
PD_STATE_SNK_DISCOVERY);
}
if (!pd_snk_is_vbus_provided(port) &&
@@ -2179,7 +2182,9 @@ void pd_task(void)
break;
case PD_STATE_HARD_RESET_SEND:
#ifdef CONFIG_USB_PD_DUAL_ROLE
if (pd[port].last_state == PD_STATE_SNK_DISCOVERY)
if (pd[port].last_state == PD_STATE_SNK_DISCOVERY ||
pd[port].last_state ==
PD_STATE_SNK_HARD_RESET_RECOVER)
hard_reset_count++;
#endif
if (pd[port].last_state != pd[port].task_state) {