15 static void dwc2_ovr_init(struct dwc2_hsotg *hsotg)  in dwc2_ovr_init()  argument
20 	spin_lock_irqsave(&hsotg->lock, flags);  in dwc2_ovr_init()
22 	gotgctl = dwc2_readl(hsotg, GOTGCTL);  in dwc2_ovr_init()
26 	dwc2_writel(hsotg, gotgctl, GOTGCTL);  in dwc2_ovr_init()
28 	dwc2_force_mode(hsotg, false);  in dwc2_ovr_init()
30 	spin_unlock_irqrestore(&hsotg->lock, flags);  in dwc2_ovr_init()
33 static int dwc2_ovr_avalid(struct dwc2_hsotg *hsotg, bool valid)  in dwc2_ovr_avalid()  argument
35 	u32 gotgctl = dwc2_readl(hsotg, GOTGCTL);  in dwc2_ovr_avalid()
46 	dwc2_writel(hsotg, gotgctl, GOTGCTL);  in dwc2_ovr_avalid()
51 static int dwc2_ovr_bvalid(struct dwc2_hsotg *hsotg, bool valid)  in dwc2_ovr_bvalid()  argument
53 	u32 gotgctl = dwc2_readl(hsotg, GOTGCTL);  in dwc2_ovr_bvalid()
64 	dwc2_writel(hsotg, gotgctl, GOTGCTL);  in dwc2_ovr_bvalid()
71 	struct dwc2_hsotg *hsotg = usb_role_switch_get_drvdata(sw);  in dwc2_drd_role_sw_set()  local
76 	if ((role == USB_ROLE_DEVICE && hsotg->dr_mode == USB_DR_MODE_HOST) ||  in dwc2_drd_role_sw_set()
77 	    (role == USB_ROLE_HOST && hsotg->dr_mode == USB_DR_MODE_PERIPHERAL))  in dwc2_drd_role_sw_set()
83 	if (role == USB_ROLE_NONE && hsotg->test_mode) {  in dwc2_drd_role_sw_set()
84 		dev_dbg(hsotg->dev, "Core is in test mode\n");  in dwc2_drd_role_sw_set()
89 	spin_lock_irqsave(&hsotg->lock, flags);  in dwc2_drd_role_sw_set()
92 		already = dwc2_ovr_avalid(hsotg, true);  in dwc2_drd_role_sw_set()
94 		already = dwc2_ovr_bvalid(hsotg, true);  in dwc2_drd_role_sw_set()
96 		dwc2_hsotg_core_connect(hsotg);  in dwc2_drd_role_sw_set()
98 		if (dwc2_is_device_mode(hsotg)) {  in dwc2_drd_role_sw_set()
99 			if (!dwc2_ovr_bvalid(hsotg, false))  in dwc2_drd_role_sw_set()
101 				dwc2_hsotg_core_disconnect(hsotg);  in dwc2_drd_role_sw_set()
103 			dwc2_ovr_avalid(hsotg, false);  in dwc2_drd_role_sw_set()
107 	spin_unlock_irqrestore(&hsotg->lock, flags);  in dwc2_drd_role_sw_set()
109 	if (!already && hsotg->dr_mode == USB_DR_MODE_OTG)  in dwc2_drd_role_sw_set()
111 		dwc2_force_mode(hsotg, role == USB_ROLE_HOST);  in dwc2_drd_role_sw_set()
113 	dev_dbg(hsotg->dev, "%s-session valid\n",  in dwc2_drd_role_sw_set()
120 int dwc2_drd_init(struct dwc2_hsotg *hsotg)  in dwc2_drd_init()  argument
126 	if (!device_property_read_bool(hsotg->dev, "usb-role-switch"))  in dwc2_drd_init()
129 	role_sw_desc.driver_data = hsotg;  in dwc2_drd_init()
130 	role_sw_desc.fwnode = dev_fwnode(hsotg->dev);  in dwc2_drd_init()
134 	role_sw = usb_role_switch_register(hsotg->dev, &role_sw_desc);  in dwc2_drd_init()
137 		dev_err(hsotg->dev,  in dwc2_drd_init()
142 	hsotg->role_sw = role_sw;  in dwc2_drd_init()
145 	dwc2_ovr_init(hsotg);  in dwc2_drd_init()
150 void dwc2_drd_suspend(struct dwc2_hsotg *hsotg)  in dwc2_drd_suspend()  argument
154 	if (hsotg->role_sw && !hsotg->params.external_id_pin_ctl) {  in dwc2_drd_suspend()
155 		gintmsk = dwc2_readl(hsotg, GINTMSK);  in dwc2_drd_suspend()
157 		dwc2_writel(hsotg, gintmsk, GINTMSK);  in dwc2_drd_suspend()
158 		gintsts = dwc2_readl(hsotg, GINTSTS);  in dwc2_drd_suspend()
159 		dwc2_writel(hsotg, gintsts | GINTSTS_CONIDSTSCHNG, GINTSTS);  in dwc2_drd_suspend()
163 void dwc2_drd_resume(struct dwc2_hsotg *hsotg)  in dwc2_drd_resume()  argument
167 	if (hsotg->role_sw && !hsotg->params.external_id_pin_ctl) {  in dwc2_drd_resume()
168 		gintsts = dwc2_readl(hsotg, GINTSTS);  in dwc2_drd_resume()
169 		dwc2_writel(hsotg, gintsts | GINTSTS_CONIDSTSCHNG, GINTSTS);  in dwc2_drd_resume()
170 		gintmsk = dwc2_readl(hsotg, GINTMSK);  in dwc2_drd_resume()
172 		dwc2_writel(hsotg, gintmsk, GINTMSK);  in dwc2_drd_resume()
176 void dwc2_drd_exit(struct dwc2_hsotg *hsotg)  in dwc2_drd_exit()  argument
178 	if (hsotg->role_sw)  in dwc2_drd_exit()
179 		usb_role_switch_unregister(hsotg->role_sw);  in dwc2_drd_exit()