USB: Set power supply online status to false after cable disconnect
During bootup, power supply online status is set to true in
qpnp_charger_probe() as soon as usb cable insert is detected by
PMIC without waiting for notification from USB driver.
Later when usb cable is disconnected before charger detection
mechanism starts, online status is not set to false by USB.
As part of cable disconnect, USB checks in msm_otg_notify_charger()
whether the cur_power is same as requested mA, if both are same
then USB does not call power_supply_set_online() to set it to false.
Fix the issue by setting power supply online status to false for
the scenario when usb cable is disconected during bootup before
charger detection mechanism is completed.
CRs-fixed: 634183
Change-Id: Ibd57a40c7364e13bb10870e9e6343224e01171d7
Signed-off-by: Saket Saurabh <ssaurabh@codeaurora.org>
diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index 15a9ab0..1249575 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -1381,6 +1381,16 @@
return -ENXIO;
}
+static void msm_otg_set_online_status(struct msm_otg *motg)
+{
+ if (!psy)
+ dev_dbg(motg->phy.dev, "no usb power supply registered\n");
+
+ /* Set power supply online status to false */
+ if (power_supply_set_online(psy, false))
+ dev_dbg(motg->phy.dev, "error setting power supply property\n");
+}
+
static void msm_otg_notify_charger(struct msm_otg *motg, unsigned mA)
{
struct usb_gadget *g = motg->phy.otg->gadget;
@@ -1400,6 +1410,13 @@
"Failed notifying %d charger type to PMIC\n",
motg->chg_type);
+ /*
+ * This condition will be true when usb cable is disconnected
+ * during bootup before charger detection mechanism starts.
+ */
+ if (motg->online && motg->cur_power == 0 && mA == 0)
+ msm_otg_set_online_status(motg);
+
if (motg->cur_power == mA)
return;