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power: qpnp-smbcharger: Add support for float charger detection

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PMI8996 charger does not detect FLOAT adapter. To support it,
FLOAT detection is done by the USB driver and notified to PMIC
by reporting  -ETIMEDOUT through the CURRENT_MAX power-supply
property. Charger then configures the charge current to 1500mA.

Change-Id: I6abd4668b41988d98465f00402aa2be558054cdd
Signed-off-by: Kavya Nunna <knunna@codeaurora.org>
This commit is contained in:
Kavya Nunna 2019-05-21 10:32:25 +05:30
parent 22dc337a69
commit 716a46317a
1 changed files with 11 additions and 1 deletions
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12
drivers/power/supply/qcom/qpnp-smbcharger.c
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@ -5747,6 +5747,16 @@ static void update_typec_otg_status(struct smbchg_chip *chip, int mode,
static int smbchg_set_sdp_current(struct smbchg_chip *chip, int current_ma)
{
if (chip->usb_supply_type == POWER_SUPPLY_TYPE_USB) {
if (current_ma == -ETIMEDOUT) {
/* float charger */
current_ma = CURRENT_1500_MA;
pr_smb(PR_MISC,
"Update usb_type to FLOAT current=%dmA\n",
current_ma);
chip->usb_psy_d.type = POWER_SUPPLY_TYPE_USB_FLOAT;
} else {
current_ma = current_ma / 1000;
}
/* Override if type-c charger used */
if (chip->typec_current_ma > 500 &&
current_ma < chip->typec_current_ma) {
@ -5807,7 +5817,7 @@ static int smbchg_usb_set_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
case POWER_SUPPLY_PROP_SDP_CURRENT_MAX:
smbchg_set_sdp_current(chip, val->intval / 1000);
smbchg_set_sdp_current(chip, val->intval);
default:
return -EINVAL;
}