dwc3: msm: Add module parameter to disable dp pulse

Add module parameter to disable sending pulse on D+ for CDP
charger, which can be enabled while running BC1.2 compliance.
Else could see CDP test failure, as compliance tester see pullup
on D+ line and starts enumeration.

Change-Id: I25dbad69ca4e6dcdf7555617ccd6eb9b34b08d40
Signed-off-by: Vijayavardhan Vennapusa <quic_vvreddy@quicinc.com>

drivers/usb/dwc3/dwc3-msm.c

@@ -47,6 +47,10 @@
 #include "debug.h"
 #include "xhci.h"
 
+static bool bc12_compliance;
+module_param(bc12_compliance, bool, 0644);
+MODULE_PARM_DESC(bc12_compliance, "Disable sending dp pulse for CDP");
+
 #define SDP_CONNETION_CHECK_TIME 10000 /* in ms */
 #define EXTCON_SYNC_EVENT_TIMEOUT_MS 1500 /* in ms */
 
@@ -3379,7 +3383,8 @@ static int dwc3_msm_vbus_notifier(struct notifier_block *nb,
 	 * and only when the vbus connect event is a valid one.
 	 */
 	if (get_psy_type(mdwc) == POWER_SUPPLY_TYPE_USB_CDP &&
-			mdwc->vbus_active && !mdwc->check_eud_state) {
+			mdwc->vbus_active &&
+				!mdwc->check_eud_state && !bc12_compliance) {
 		dev_dbg(mdwc->dev, "Connected to CDP, pull DP up\n");
 		usb_phy_drive_dp_pulse(mdwc->hs_phy, DP_PULSE_WIDTH_MSEC);
 	}