16 static void dwc2_ovr_init(struct dwc2_hsotg *hsotg)  in dwc2_ovr_init()  argument
21 	spin_lock_irqsave(&hsotg->lock, flags);  in dwc2_ovr_init()
23 	gotgctl = dwc2_readl(hsotg, GOTGCTL);  in dwc2_ovr_init()
27 	dwc2_writel(hsotg, gotgctl, GOTGCTL);  in dwc2_ovr_init()
29 	spin_unlock_irqrestore(&hsotg->lock, flags);  in dwc2_ovr_init()
31 	dwc2_force_mode(hsotg, (hsotg->dr_mode == USB_DR_MODE_HOST));  in dwc2_ovr_init()
34 static int dwc2_ovr_avalid(struct dwc2_hsotg *hsotg, bool valid)  in dwc2_ovr_avalid()  argument
36 	u32 gotgctl = dwc2_readl(hsotg, GOTGCTL);  in dwc2_ovr_avalid()
48 	dwc2_writel(hsotg, gotgctl, GOTGCTL);  in dwc2_ovr_avalid()
53 static int dwc2_ovr_bvalid(struct dwc2_hsotg *hsotg, bool valid)  in dwc2_ovr_bvalid()  argument
55 	u32 gotgctl = dwc2_readl(hsotg, GOTGCTL);  in dwc2_ovr_bvalid()
67 	dwc2_writel(hsotg, gotgctl, GOTGCTL);  in dwc2_ovr_bvalid()
74 	struct dwc2_hsotg *hsotg = usb_role_switch_get_drvdata(sw);  in dwc2_drd_role_sw_set()  local
79 	if ((role == USB_ROLE_DEVICE && hsotg->dr_mode == USB_DR_MODE_HOST) ||  in dwc2_drd_role_sw_set()
80 	    (role == USB_ROLE_HOST && hsotg->dr_mode == USB_DR_MODE_PERIPHERAL))  in dwc2_drd_role_sw_set()
86 	if (role == USB_ROLE_NONE && hsotg->test_mode) {  in dwc2_drd_role_sw_set()
87 		dev_dbg(hsotg->dev, "Core is in test mode\n");  in dwc2_drd_role_sw_set()
99 	if (!hsotg->ll_hw_enabled) {  in dwc2_drd_role_sw_set()
100 		int ret = clk_bulk_prepare_enable(hsotg->num_clks, hsotg->clks);  in dwc2_drd_role_sw_set()
106 	spin_lock_irqsave(&hsotg->lock, flags);  in dwc2_drd_role_sw_set()
109 		already = dwc2_ovr_avalid(hsotg, true);  in dwc2_drd_role_sw_set()
111 		already = dwc2_ovr_bvalid(hsotg, true);  in dwc2_drd_role_sw_set()
112 		if (dwc2_is_device_enabled(hsotg)) {  in dwc2_drd_role_sw_set()
114 			dwc2_hsotg_core_connect(hsotg);  in dwc2_drd_role_sw_set()
117 		if (dwc2_is_device_mode(hsotg)) {  in dwc2_drd_role_sw_set()
118 			if (!dwc2_ovr_bvalid(hsotg, false))  in dwc2_drd_role_sw_set()
120 				dwc2_hsotg_core_disconnect(hsotg);  in dwc2_drd_role_sw_set()
122 			dwc2_ovr_avalid(hsotg, false);  in dwc2_drd_role_sw_set()
126 	spin_unlock_irqrestore(&hsotg->lock, flags);  in dwc2_drd_role_sw_set()
128 	if (!already && hsotg->dr_mode == USB_DR_MODE_OTG)  in dwc2_drd_role_sw_set()
130 		dwc2_force_mode(hsotg, role == USB_ROLE_HOST);  in dwc2_drd_role_sw_set()
132 	if (!hsotg->ll_hw_enabled)  in dwc2_drd_role_sw_set()
133 		clk_bulk_disable_unprepare(hsotg->num_clks, hsotg->clks);  in dwc2_drd_role_sw_set()
135 	dev_dbg(hsotg->dev, "%s-session valid\n",  in dwc2_drd_role_sw_set()
142 int dwc2_drd_init(struct dwc2_hsotg *hsotg)  in dwc2_drd_init()  argument
148 	if (!device_property_read_bool(hsotg->dev, "usb-role-switch"))  in dwc2_drd_init()
151 	role_sw_desc.driver_data = hsotg;  in dwc2_drd_init()
152 	role_sw_desc.fwnode = dev_fwnode(hsotg->dev);  in dwc2_drd_init()
156 	role_sw = usb_role_switch_register(hsotg->dev, &role_sw_desc);  in dwc2_drd_init()
159 		dev_err(hsotg->dev,  in dwc2_drd_init()
164 	hsotg->role_sw = role_sw;  in dwc2_drd_init()
167 	dwc2_ovr_init(hsotg);  in dwc2_drd_init()
172 void dwc2_drd_suspend(struct dwc2_hsotg *hsotg)  in dwc2_drd_suspend()  argument
176 	if (hsotg->role_sw && !hsotg->params.external_id_pin_ctl) {  in dwc2_drd_suspend()
177 		gintmsk = dwc2_readl(hsotg, GINTMSK);  in dwc2_drd_suspend()
179 		dwc2_writel(hsotg, gintmsk, GINTMSK);  in dwc2_drd_suspend()
180 		gintsts = dwc2_readl(hsotg, GINTSTS);  in dwc2_drd_suspend()
181 		dwc2_writel(hsotg, gintsts | GINTSTS_CONIDSTSCHNG, GINTSTS);  in dwc2_drd_suspend()
185 void dwc2_drd_resume(struct dwc2_hsotg *hsotg)  in dwc2_drd_resume()  argument
189 	if (hsotg->role_sw && !hsotg->params.external_id_pin_ctl) {  in dwc2_drd_resume()
190 		gintsts = dwc2_readl(hsotg, GINTSTS);  in dwc2_drd_resume()
191 		dwc2_writel(hsotg, gintsts | GINTSTS_CONIDSTSCHNG, GINTSTS);  in dwc2_drd_resume()
192 		gintmsk = dwc2_readl(hsotg, GINTMSK);  in dwc2_drd_resume()
194 		dwc2_writel(hsotg, gintmsk, GINTMSK);  in dwc2_drd_resume()
198 void dwc2_drd_exit(struct dwc2_hsotg *hsotg)  in dwc2_drd_exit()  argument
200 	if (hsotg->role_sw)  in dwc2_drd_exit()
201 		usb_role_switch_unregister(hsotg->role_sw);  in dwc2_drd_exit()