charge: Handle QC2.0 charger vbus rise 12V

some non-standard QC2.0 charger (e.g. Tronsmart) will rise
vbus to 12V when phone do HVDCP3 detect protocol.
So when vbus reach 12V, we disable HVDCP to workaround it.

refer to (CR)

Change-Id: I1a1fbf1715ac6fbd12a9cd550207b210f16a951d
Signed-off-by: chailu1 <chailu1@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1709435
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Haijian Ma <mahj8@motorola.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key

drivers/power/supply/qcom/qpnp-smb5.c

@@ -648,6 +648,9 @@ static int smb5_parse_dt_misc(struct smb5 *chip, struct device_node *node)
 	if (chg->chg_param.qc4_max_icl_ua <= 0)
 		chg->chg_param.qc4_max_icl_ua = MICRO_4PA;
 
+	chg->ext_ovp_greater_12v = of_property_read_bool(node,
+					"mmi,ext-ovp-greater-12v");
+
 	return 0;
 }
 
@@ -4260,6 +4263,7 @@ static int smb5_probe(struct platform_device *pdev)
 	chg->connector_health = -EINVAL;
 	chg->otg_present = false;
 	chg->main_fcc_max = -EINVAL;
+	chg->qc_usbov = false;
 	mutex_init(&chg->adc_lock);
 
 	chg->regmap = dev_get_regmap(chg->dev->parent, NULL);

drivers/power/supply/qcom/smb5-lib.c

@@ -574,12 +574,12 @@ static const struct apsd_result smblib_apsd_results[] = {
 	[HVDCP2] = {
 		.name	= "HVDCP2",
 		.bit	= DCP_CHARGER_BIT | QC_2P0_BIT,
-		.pst	= POWER_SUPPLY_TYPE_USB_DCP
+		.pst	= POWER_SUPPLY_TYPE_USB_HVDCP
 	},
 	[HVDCP3] = {
 		.name	= "HVDCP3",
 		.bit	= DCP_CHARGER_BIT | QC_3P0_BIT,
-		.pst	= POWER_SUPPLY_TYPE_USB_DCP,
+		.pst	= POWER_SUPPLY_TYPE_USB_HVDCP_3,
 	},
 };
 
@@ -1156,6 +1156,26 @@ void smblib_hvdcp_hw_inov_enable(struct smb_charger *chg, bool enable)
 				rc);
 }
 
+void smblib_hvdcp_enable_mmi(struct smb_charger *chg, bool enable)
+{
+	int rc;
+	u8 mask;
+
+	if (chg->hvdcp_disable)
+		return;
+
+	mask = HVDCP_AUTH_ALG_EN_CFG_BIT | HVDCP_EN_BIT;
+	rc = smblib_masked_write(chg, USBIN_OPTIONS_1_CFG_REG, mask,
+						enable ? mask : 0);
+	if (rc < 0)
+		smblib_err(chg, "MMI failed to write USBIN_OPTIONS_1_CFG rc=%d\n",
+				rc);
+	else
+		chg->hvdcp_is_disable = enable ? false : true;
+
+	return;
+}
+
 void smblib_hvdcp_exit_config(struct smb_charger *chg)
 {
 	u8 stat;
@@ -6875,6 +6895,14 @@ static void typec_src_removal(struct smb_charger *chg)
 		chg->qc2_unsupported_voltage = QC2_COMPLIANT;
 	}
 
+	if (chg->hvdcp_is_disable &&
+		((!chg->ext_ovp_greater_12v && !chg->qc_usbov) ||
+		(chg->ext_ovp_greater_12v && chg->qc_usbov))) {
+		smblib_err(chg, "Re-enable HVDCP as type-c removal\n");
+		smblib_hvdcp_enable_mmi(chg, true);
+	}
+	chg->qc_usbov = false;
+
 	if (chg->use_extcon)
 		smblib_notify_device_mode(chg, false);
 
@@ -7684,6 +7712,16 @@ irqreturn_t usbin_ov_irq_handler(int irq, void *data)
 
 	smblib_dbg(chg, PR_MISC, "USBOV debounce status %d\n",
 				chg->dbc_usbov);
+
+	if ((!chg->qc_usbov) &&
+	    (chg->real_charger_type == POWER_SUPPLY_TYPE_USB_HVDCP ||
+	    chg->real_charger_type == POWER_SUPPLY_TYPE_USB_HVDCP_3)) {
+		smblib_err(chg, "QC vbus OV disable HVDCP\n");
+		chg->qc_usbov = true;
+		smblib_hvdcp_enable_mmi(chg, false);
+		smblib_rerun_apsd(chg);
+	}
+
 	return IRQ_HANDLED;
 }
 

drivers/power/supply/qcom/smb5-lib.h

@@ -738,7 +738,10 @@ struct smb_charger {
 	int                     qc2_max_pulses;
 	enum qc2_non_comp_voltage qc2_unsupported_voltage;
 	bool			dbc_usbov;
-
+	bool			qc_usbov;
+	bool			hvdcp_is_disable;
+	/*if external ovp threshold greater than 12V*/
+	bool			ext_ovp_greater_12v;
 	/* extcon for VBUS / ID notification to USB for uUSB */
 	struct extcon_dev	*extcon;