evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

usb: dwc3: dwc3-msm: Handle floating charger PMI notification properly

Browse source 
When floating charger is detected, driver first notifies -ETIMEDOUT to
PMI after 10 sec and then stops peripheral by simulating cable disconnect.
As part of disconnect it notifies PMI to draw 0ma which PMI re-interprets
as a SDP in bus suspend state and reconfigures PMI for SDP. Hence send
charger current notification only as part of cable disconnect simulation
by checking charger type.

Change-Id: Ibafe8d52fa14ff32b6cb11e9f6e15a4f3f147d7a
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
This commit is contained in:
Hemant Kumar 2017-07-27 15:11:25 -07:00
parent 0a57938d14
commit c5c2ca0587
1 changed files with 8 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
drivers/usb/dwc3/dwc3-msm.c
View file

@ -2634,8 +2634,6 @@ done:
static void check_for_sdp_connection(struct work_struct *w)
{
int ret;
union power_supply_propval pval = {0};
struct dwc3_msm *mdwc =
container_of(w, struct dwc3_msm, sdp_check.work);
struct dwc3 *dwc = platform_get_drvdata(mdwc->dwc3);
@ -2646,21 +2644,6 @@ static void check_for_sdp_connection(struct work_struct *w)
/* floating D+/D- lines detected */
if (dwc->gadget.state < USB_STATE_DEFAULT &&
dwc3_gadget_get_link_state(dwc) != DWC3_LINK_STATE_CMPLY) {
if (!mdwc->usb_psy) {
mdwc->usb_psy = power_supply_get_by_name("usb");
if (!mdwc->usb_psy) {
dev_dbg(mdwc->dev,
"Could not get usb power_supply\n");
return;
}
}
pval.intval = -ETIMEDOUT;
ret = power_supply_set_property(mdwc->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &pval);
if (ret)
dev_dbg(mdwc->dev,
"power supply error when setting property\n");
mdwc->vbus_active = 0;
dbg_event(0xFF, "Q RW SPD CHK", mdwc->vbus_active);
queue_work(mdwc->dwc3_wq, &mdwc->resume_work);
@ -3708,14 +3691,16 @@ static int dwc3_msm_gadget_vbus_draw(struct dwc3_msm *mdwc, unsigned mA)
return 0;
psy_type = get_psy_type(mdwc);
if (psy_type != POWER_SUPPLY_TYPE_USB &&
psy_type != POWER_SUPPLY_TYPE_USB_FLOAT)
if (psy_type == POWER_SUPPLY_TYPE_USB) {
dev_info(mdwc->dev, "Avail curr from USB = %u\n", mA);
/* Set max current limit in uA */
pval.intval = 1000 * mA;
} else if (psy_type == POWER_SUPPLY_TYPE_USB_FLOAT) {
pval.intval = -ETIMEDOUT;
} else {
return 0;
}
dev_info(mdwc->dev, "Avail curr from USB = %u\n", mA);
/* Set max current limit in uA */
pval.intval = 1000 * mA;
ret = power_supply_set_property(mdwc->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &pval);
if (ret) {