for hiphi, skip charger confirmation

WHAT: skip charger confirmation for hiphi
WHY: this feature was never supported before the upgrade. After the upgrade
         moto qti_glink driver was modified to implement charger confirmation.
         If device has the flag SKIP_QTI_CHARGER_CONFIRMAION, use the old
         implementation

Change-Id: I041c615506d9df4ced0f4add6ca05967e5d94be7
Reviewed-on: https://gerrit.mot.com/2497685
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Rafael Ortolan <rafones@motorola.com>
Reviewed-by: Douglas do Vale <dtvale@motorola.com>
Reviewed-by: Wentao Xu <xuwt2@motorola.com>
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key

drivers/power/qti_glink_charger/Android.mk

@@ -18,5 +18,10 @@ ifeq ($(WIRELESS_CPS4019),true)
 	KBUILD_OPTIONS += CONFIG_WIRELESS_CPS4019=y
 endif
 
+ifeq ($(SKIP_QTI_CHARGER_CONFIRMAION),true)
+	KERNEL_CFLAGS += CONFIG_SKIP_QTI_CHARGER_CONFIRMAION=y
+	KBUILD_OPTIONS += CONFIG_SKIP_QTI_CHARGER_CONFIRMAION=y
+endif
+
 KBUILD_OPTIONS_GKI += GKI_OBJ_MODULE_DIR=gki
 include $(DLKM_DIR)/AndroidKernelModule.mk

drivers/power/qti_glink_charger/Kbuild

@@ -11,6 +11,10 @@ ifneq ($(filter m y,$(CONFIG_WIRELESS_CPS4019)),)
 	EXTRA_CFLAGS += -DWIRELESS_CPS4019
 endif
 
+ifneq ($(filter m y,$(CONFIG_SKIP_QTI_CHARGER_CONFIRMAION)),)
+	EXTRA_CFLAGS += -DSKIP_QTI_CHARGER_CONFIRMAION
+endif
+
 obj-m += qti_glink_charger.o
 
 KBUILD_EXTRA_SYMBOLS += $(CURDIR)/$(KBUILD_EXTMOD)/../bm_adsp_ulog/$(GKI_OBJ_MODULE_DIR)/Module.symvers

drivers/power/qti_glink_charger/qti_glink_charger.c

@@ -1544,20 +1544,25 @@ static ssize_t tx_mode_show(struct device *dev,
 		struct device_attribute *attr,
 		char *buf)
 {
+#ifndef SKIP_QTI_CHARGER_CONFIRMAION
 	u32 tx_mode = 0;
+#endif
 	struct qti_charger *chg = this_chip;
 
 	if (!chg) {
 		pr_err("QTI: chip not valid\n");
 		return -ENODEV;
 	}
-
+#ifdef SKIP_QTI_CHARGER_CONFIRMAION
+	return scnprintf(buf, CHG_SHOW_MAX_SIZE, "%d\n", chg->tx_mode);
+#else
 	qti_charger_read(chg, OEM_PROP_WLS_TX_MODE,
 				&tx_mode,
 				sizeof(tx_mode));
 
 	chg->tx_mode = tx_mode;
 	return scnprintf(buf, CHG_SHOW_MAX_SIZE, "%d\n", tx_mode);
+#endif
 }
 
 static DEVICE_ATTR(tx_mode, S_IRUGO|S_IWUSR, tx_mode_show, tx_mode_store);