30 int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)  in cdns3_set_mode()  argument
41 		dev_dbg(cdns->dev, "Set controller to OTG mode\n");  in cdns3_set_mode()
42 		if (cdns->version == CDNS3_CONTROLLER_V1) {  in cdns3_set_mode()
43 			reg = readl(&cdns->otg_v1_regs->override);  in cdns3_set_mode()
45 			writel(reg, &cdns->otg_v1_regs->override);  in cdns3_set_mode()
47 			reg = readl(&cdns->otg_v0_regs->ctrl1);  in cdns3_set_mode()
49 			writel(reg, &cdns->otg_v0_regs->ctrl1);  in cdns3_set_mode()
60 		dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode);  in cdns3_set_mode()
67 int cdns3_get_id(struct cdns3 *cdns)  in cdns3_get_id()  argument
71 	id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE;  in cdns3_get_id()
72 	dev_dbg(cdns->dev, "OTG ID: %d", id);  in cdns3_get_id()
77 int cdns3_get_vbus(struct cdns3 *cdns)  in cdns3_get_vbus()  argument
81 	vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID);  in cdns3_get_vbus()
82 	dev_dbg(cdns->dev, "OTG VBUS: %d", vbus);  in cdns3_get_vbus()
87 int cdns3_is_host(struct cdns3 *cdns)  in cdns3_is_host()  argument
89 	if (cdns->dr_mode == USB_DR_MODE_HOST)  in cdns3_is_host()
91 	else if (!cdns3_get_id(cdns))  in cdns3_is_host()
97 int cdns3_is_device(struct cdns3 *cdns)  in cdns3_is_device()  argument
99 	if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL)  in cdns3_is_device()
101 	else if (cdns->dr_mode == USB_DR_MODE_OTG)  in cdns3_is_device()
102 		if (cdns3_get_id(cdns))  in cdns3_is_device()
112 static void cdns3_otg_disable_irq(struct cdns3 *cdns)  in cdns3_otg_disable_irq()  argument
114 	writel(0, &cdns->otg_regs->ien);  in cdns3_otg_disable_irq()
121 static void cdns3_otg_enable_irq(struct cdns3 *cdns)  in cdns3_otg_enable_irq()  argument
124 	       OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_regs->ien);  in cdns3_otg_enable_irq()
134 int cdns3_drd_switch_host(struct cdns3 *cdns, int on)  in cdns3_drd_switch_host()  argument
141 		writel(OTGCMD_HOST_BUS_REQ | reg, &cdns->otg_regs->cmd);  in cdns3_drd_switch_host()
143 		dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");  in cdns3_drd_switch_host()
144 		ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,  in cdns3_drd_switch_host()
148 			dev_err(cdns->dev, "timeout waiting for xhci_ready\n");  in cdns3_drd_switch_host()
154 		       &cdns->otg_regs->cmd);  in cdns3_drd_switch_host()
156 		readl_poll_timeout_atomic(&cdns->otg_regs->state, val,  in cdns3_drd_switch_host()
171 int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on)  in cdns3_drd_switch_gadget()  argument
178 		writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);  in cdns3_drd_switch_gadget()
180 		dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");  in cdns3_drd_switch_gadget()
182 		ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,  in cdns3_drd_switch_gadget()
186 			dev_err(cdns->dev, "timeout waiting for dev_ready\n");  in cdns3_drd_switch_gadget()
197 		       &cdns->otg_regs->cmd);  in cdns3_drd_switch_gadget()
199 		readl_poll_timeout_atomic(&cdns->otg_regs->state, val,  in cdns3_drd_switch_gadget()
213 static int cdns3_init_otg_mode(struct cdns3 *cdns)  in cdns3_init_otg_mode()  argument
217 	cdns3_otg_disable_irq(cdns);  in cdns3_init_otg_mode()
219 	writel(~0, &cdns->otg_regs->ivect);  in cdns3_init_otg_mode()
221 	ret = cdns3_set_mode(cdns, USB_DR_MODE_OTG);  in cdns3_init_otg_mode()
225 	cdns3_otg_enable_irq(cdns);  in cdns3_init_otg_mode()
235 int cdns3_drd_update_mode(struct cdns3 *cdns)  in cdns3_drd_update_mode()  argument
239 	switch (cdns->dr_mode) {  in cdns3_drd_update_mode()
241 		ret = cdns3_set_mode(cdns, USB_DR_MODE_PERIPHERAL);  in cdns3_drd_update_mode()
244 		ret = cdns3_set_mode(cdns, USB_DR_MODE_HOST);  in cdns3_drd_update_mode()
247 		ret = cdns3_init_otg_mode(cdns);  in cdns3_drd_update_mode()
250 		dev_err(cdns->dev, "Unsupported mode of operation %d\n",  in cdns3_drd_update_mode()
251 			cdns->dr_mode);  in cdns3_drd_update_mode()
260 	struct cdns3 *cdns = data;  in cdns3_drd_thread_irq()  local
262 	cdns3_hw_role_switch(cdns);  in cdns3_drd_thread_irq()
278 	struct cdns3 *cdns = data;  in cdns3_drd_irq()  local
281 	if (cdns->dr_mode != USB_DR_MODE_OTG)  in cdns3_drd_irq()
284 	reg = readl(&cdns->otg_regs->ivect);  in cdns3_drd_irq()
290 		dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n",  in cdns3_drd_irq()
291 			cdns3_get_id(cdns));  in cdns3_drd_irq()
297 		dev_dbg(cdns->dev, "OTG IRQ: new VBUS: %d\n",  in cdns3_drd_irq()
298 			cdns3_get_vbus(cdns));  in cdns3_drd_irq()
303 	writel(~0, &cdns->otg_regs->ivect);  in cdns3_drd_irq()
307 int cdns3_drd_init(struct cdns3 *cdns)  in cdns3_drd_init()  argument
313 	regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);  in cdns3_drd_init()
326 	cdns->otg_v0_regs = regs;  in cdns3_drd_init()
327 	if (!readl(&cdns->otg_v0_regs->cmd)) {  in cdns3_drd_init()
328 		cdns->version  = CDNS3_CONTROLLER_V0;  in cdns3_drd_init()
329 		cdns->otg_v1_regs = NULL;  in cdns3_drd_init()
330 		cdns->otg_regs = regs;  in cdns3_drd_init()
331 		writel(1, &cdns->otg_v0_regs->simulate);  in cdns3_drd_init()
332 		dev_info(cdns->dev, "DRD version v0 (%08x)\n",  in cdns3_drd_init()
333 			 readl(&cdns->otg_v0_regs->version));  in cdns3_drd_init()
335 		cdns->otg_v0_regs = NULL;  in cdns3_drd_init()
336 		cdns->otg_v1_regs = regs;  in cdns3_drd_init()
337 		cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd;  in cdns3_drd_init()
338 		cdns->version  = CDNS3_CONTROLLER_V1;  in cdns3_drd_init()
339 		writel(1, &cdns->otg_v1_regs->simulate);  in cdns3_drd_init()
340 		dev_info(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n",  in cdns3_drd_init()
341 			 readl(&cdns->otg_v1_regs->did),  in cdns3_drd_init()
342 			 readl(&cdns->otg_v1_regs->rid));  in cdns3_drd_init()
345 	state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts));  in cdns3_drd_init()
348 	cdns->dr_mode = USB_DR_MODE_OTG;  in cdns3_drd_init()
350 		dev_dbg(cdns->dev, "Controller strapped to HOST\n");  in cdns3_drd_init()
351 		cdns->dr_mode = USB_DR_MODE_HOST;  in cdns3_drd_init()
353 		dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n");  in cdns3_drd_init()
354 		cdns->dr_mode = USB_DR_MODE_PERIPHERAL;  in cdns3_drd_init()
357 	ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq,  in cdns3_drd_init()
361 					dev_name(cdns->dev), cdns);  in cdns3_drd_init()
364 		dev_err(cdns->dev, "couldn't get otg_irq\n");  in cdns3_drd_init()
368 	state = readl(&cdns->otg_regs->sts);  in cdns3_drd_init()
370 		dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n");  in cdns3_drd_init()
377 int cdns3_drd_exit(struct cdns3 *cdns)  in cdns3_drd_exit()  argument
379 	cdns3_otg_disable_irq(cdns);  in cdns3_drd_exit()