evie/android_kernel_oneplus_msm8998
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usb: pd: Notify charger when PR Swap is in progress

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Charger driver needs to know when PR Swap is happening in
order to avoid resetting state when the disconnect (which
is expected) occurs. Utilize the new power supply PR_SWAP
property to notify whenever PD is in PR Swap.

Change-Id: I13fdbd4a3cf3e0716d48d1268795189f6b064598
Signed-off-by: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Jack Pham 2017-05-25 11:53:36 -07:00
parent ef4834bc69
commit 7805ee656a
1 changed files with 28 additions and 0 deletions
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28
drivers/usb/pd/policy_engine.c
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@ -571,6 +571,8 @@ static int pd_eval_src_caps(struct usbpd *pd)
static void pd_send_hard_reset(struct usbpd *pd)
{
union power_supply_propval val = {0};
usbpd_dbg(&pd->dev, "send hard reset");
/* Force CC logic to source/sink to keep Rp/Rd unchanged */
@ -578,6 +580,7 @@ static void pd_send_hard_reset(struct usbpd *pd)
pd->hard_reset_count++;
pd_phy_signal(HARD_RESET_SIG, 5); /* tHardResetComplete */
pd->in_pr_swap = false;
power_supply_set_property(pd->usb_psy, POWER_SUPPLY_PROP_PR_SWAP, &val);
}
static void kick_sm(struct usbpd *pd, int ms)
@ -716,6 +719,9 @@ static void usbpd_set_state(struct usbpd *pd, enum usbpd_state next_state)
switch (next_state) {
case PE_ERROR_RECOVERY: /* perform hard disconnect/reconnect */
pd->in_pr_swap = false;
val.intval = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
pd->current_pr = PR_NONE;
set_power_role(pd, PR_NONE);
pd->typec_mode = POWER_SUPPLY_TYPEC_NONE;
@ -771,6 +777,9 @@ static void usbpd_set_state(struct usbpd *pd, enum usbpd_state next_state)
if (pd->in_pr_swap) {
kick_sm(pd, SWAP_SOURCE_START_TIME);
pd->in_pr_swap = false;
val.intval = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
break;
}
@ -1564,6 +1573,9 @@ static void usbpd_sm(struct work_struct *w)
rx_msg_cleanup(pd);
val.intval = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PD_IN_HARD_RESET, &val);
@ -1622,6 +1634,10 @@ static void usbpd_sm(struct work_struct *w)
POWER_SUPPLY_PROP_PD_IN_HARD_RESET, &val);
pd->in_pr_swap = false;
val.intval = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
pd->in_explicit_contract = false;
pd->selected_pdo = pd->requested_pdo = 0;
pd->rdo = 0;
@ -1888,6 +1904,9 @@ static void usbpd_sm(struct work_struct *w)
case PE_SNK_WAIT_FOR_CAPABILITIES:
pd->in_pr_swap = false;
val.intval = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
if (IS_DATA(rx_msg, MSG_SOURCE_CAPABILITIES)) {
val.intval = 0;
@ -2066,6 +2085,9 @@ static void usbpd_sm(struct work_struct *w)
}
pd->in_pr_swap = true;
val.intval = 1;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
usbpd_set_state(pd, PE_PRS_SNK_SRC_TRANSITION_TO_OFF);
break;
} else if (IS_CTRL(rx_msg, MSG_VCONN_SWAP)) {
@ -2209,6 +2231,9 @@ static void usbpd_sm(struct work_struct *w)
case PE_PRS_SRC_SNK_TRANSITION_TO_OFF:
pd->in_pr_swap = true;
val.intval = 1;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
pd->in_explicit_contract = false;
if (pd->vbus_enabled) {
@ -2249,6 +2274,9 @@ static void usbpd_sm(struct work_struct *w)
}
pd->in_pr_swap = true;
val.intval = 1;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PR_SWAP, &val);
usbpd_set_state(pd, PE_PRS_SNK_SRC_TRANSITION_TO_OFF);
break;