evie/android_kernel_oneplus_msm8998
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usb: pd: Use new power_supply properties for PD current

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Switch to setting the POWER_SUPPLY_PROP_PD_CURRENT_MAX for
indicating the current limit to the charger driver when
an explicit contract is established. Also set the
POWER_SUPPLY_PROP_PD_USB_SUSPEND_SUPPORTED property whenever
encountering the "USB Suspend Supported" bit in the first
PDO of a Source Capabilities message. This is an indication
to the charger that when the USB bus enters suspend state that
it should follow suspend rules according to USB 2.0/3.1 spec.

Change-Id: I665ec788a770632b4849b9beff8444d00e956ce1
Signed-off-by: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Jack Pham 2016-10-05 16:12:11 -07:00
parent 18da08334e
commit 7f87a85c97
1 changed files with 18 additions and 4 deletions
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22
drivers/usb/pd/policy_engine.c
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@ -460,6 +460,7 @@ static int pd_select_pdo(struct usbpd *pd, int pdo_pos)
static int pd_eval_src_caps(struct usbpd *pd, const u32 *src_caps)
{
union power_supply_propval val;
u32 first_pdo = src_caps[0];
/* save the PDOs so userspace can further evaluate */
@ -475,6 +476,10 @@ static int pd_eval_src_caps(struct usbpd *pd, const u32 *src_caps)
pd->peer_pr_swap = PD_SRC_PDO_FIXED_PR_SWAP(first_pdo);
pd->peer_dr_swap = PD_SRC_PDO_FIXED_DR_SWAP(first_pdo);
val.intval = PD_SRC_PDO_FIXED_USB_SUSP(first_pdo);
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PD_USB_SUSPEND_SUPPORTED, &val);
/* Select the first PDO (vSafe5V) immediately. */
pd_select_pdo(pd, 1);
@ -1404,6 +1409,10 @@ static void usbpd_sm(struct work_struct *w)
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PD_IN_HARD_RESET, &val);
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PD_USB_SUSPEND_SUPPORTED,
&val);
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_PD_ACTIVE, &val);
@ -1681,9 +1690,14 @@ static void usbpd_sm(struct work_struct *w)
POWER_SUPPLY_PROP_VOLTAGE_MIN,
&val);
val.intval = 0; /* suspend charging */
/*
* disable charging; technically we are allowed to
* charge up to pSnkStdby (2.5 W) during this
* transition, but disable it just for simplicity.
*/
val.intval = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &val);
POWER_SUPPLY_PROP_PD_CURRENT_MAX, &val);
pd->selected_pdo = pd->requested_pdo;
usbpd_set_state(pd, PE_SNK_TRANSITION_SINK);
@ -1714,7 +1728,7 @@ static void usbpd_sm(struct work_struct *w)
/* resume charging */
val.intval = pd->requested_current * 1000; /* mA->uA */
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &val);
POWER_SUPPLY_PROP_PD_CURRENT_MAX, &val);
usbpd_set_state(pd, PE_SNK_READY);
} else {
@ -1866,7 +1880,7 @@ static void usbpd_sm(struct work_struct *w)
if (pd->requested_current) {
val.intval = pd->requested_current = 0;
power_supply_set_property(pd->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &val);
POWER_SUPPLY_PROP_PD_CURRENT_MAX, &val);
}
val.intval = pd->requested_voltage;