26  * @cdns: pointer to context structure
31 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()
53 			if (cdns->phyrst_a_enable) {  in cdns3_set_mode()
54 				reg = readl(&cdns->otg_v1_regs->phyrst_cfg);  in cdns3_set_mode()
56 				writel(reg, &cdns->otg_v1_regs->phyrst_cfg);  in cdns3_set_mode()
59 			reg = readl(&cdns->otg_v0_regs->ctrl1);  in cdns3_set_mode()
61 			writel(reg, &cdns->otg_v0_regs->ctrl1);  in cdns3_set_mode()
72 		dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode);  in cdns3_set_mode()
79 int cdns3_get_id(struct cdns3 *cdns)  in cdns3_get_id()  argument
83 	id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE;  in cdns3_get_id()
84 	dev_dbg(cdns->dev, "OTG ID: %d", id);  in cdns3_get_id()
89 int cdns3_get_vbus(struct cdns3 *cdns)  in cdns3_get_vbus()  argument
93 	vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID);  in cdns3_get_vbus()
94 	dev_dbg(cdns->dev, "OTG VBUS: %d", vbus);  in cdns3_get_vbus()
99 bool cdns3_is_host(struct cdns3 *cdns)  in cdns3_is_host()  argument
101 	if (cdns->dr_mode == USB_DR_MODE_HOST)  in cdns3_is_host()
103 	else if (cdns3_get_id(cdns) == CDNS3_ID_HOST)  in cdns3_is_host()
109 bool cdns3_is_device(struct cdns3 *cdns)  in cdns3_is_device()  argument
111 	if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL)  in cdns3_is_device()
113 	else if (cdns->dr_mode == USB_DR_MODE_OTG)  in cdns3_is_device()
114 		if (cdns3_get_id(cdns) == CDNS3_ID_PERIPHERAL)  in cdns3_is_device()
122  * @cdns: Pointer to controller context structure
124 static void cdns3_otg_disable_irq(struct cdns3 *cdns)  in cdns3_otg_disable_irq()  argument
126 	writel(0, &cdns->otg_regs->ien);  in cdns3_otg_disable_irq()
131  * @cdns: Pointer to controller context structure
133 static void cdns3_otg_enable_irq(struct cdns3 *cdns)  in cdns3_otg_enable_irq()  argument
136 	       OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_regs->ien);  in cdns3_otg_enable_irq()
141  * @cdns: Pointer to controller context structure.
145 int cdns3_drd_host_on(struct cdns3 *cdns)  in cdns3_drd_host_on()  argument
152 	       &cdns->otg_regs->cmd);  in cdns3_drd_host_on()
154 	dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");  in cdns3_drd_host_on()
155 	ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,  in cdns3_drd_host_on()
159 		dev_err(cdns->dev, "timeout waiting for xhci_ready\n");  in cdns3_drd_host_on()
161 	phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_HOST);  in cdns3_drd_host_on()
167  * @cdns: Pointer to controller context structure.
169 void cdns3_drd_host_off(struct cdns3 *cdns)  in cdns3_drd_host_off()  argument
175 	       &cdns->otg_regs->cmd);  in cdns3_drd_host_off()
178 	readl_poll_timeout_atomic(&cdns->otg_regs->state, val,  in cdns3_drd_host_off()
181 	phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID);  in cdns3_drd_host_off()
186  * @cdns: Pointer to controller context structure.
190 int cdns3_drd_gadget_on(struct cdns3 *cdns)  in cdns3_drd_gadget_on()  argument
196 	writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);  in cdns3_drd_gadget_on()
198 	dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");  in cdns3_drd_gadget_on()
200 	ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,  in cdns3_drd_gadget_on()
204 		dev_err(cdns->dev, "timeout waiting for dev_ready\n");  in cdns3_drd_gadget_on()
208 	phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_DEVICE);  in cdns3_drd_gadget_on()
214  * @cdns: Pointer to controller context structure.
216 void cdns3_drd_gadget_off(struct cdns3 *cdns)  in cdns3_drd_gadget_off()  argument
227 	       &cdns->otg_regs->cmd);  in cdns3_drd_gadget_off()
229 	readl_poll_timeout_atomic(&cdns->otg_regs->state, val,  in cdns3_drd_gadget_off()
232 	phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID);  in cdns3_drd_gadget_off()
237  * @cdns: Pointer to controller context structure
241 static int cdns3_init_otg_mode(struct cdns3 *cdns)  in cdns3_init_otg_mode()  argument
245 	cdns3_otg_disable_irq(cdns);  in cdns3_init_otg_mode()
247 	writel(~0, &cdns->otg_regs->ivect);  in cdns3_init_otg_mode()
249 	ret = cdns3_set_mode(cdns, USB_DR_MODE_OTG);  in cdns3_init_otg_mode()
253 	cdns3_otg_enable_irq(cdns);  in cdns3_init_otg_mode()
260  * @cdns: Pointer to controller context structure
264 int cdns3_drd_update_mode(struct cdns3 *cdns)  in cdns3_drd_update_mode()  argument
268 	switch (cdns->dr_mode) {  in cdns3_drd_update_mode()
270 		ret = cdns3_set_mode(cdns, USB_DR_MODE_PERIPHERAL);  in cdns3_drd_update_mode()
273 		ret = cdns3_set_mode(cdns, USB_DR_MODE_HOST);  in cdns3_drd_update_mode()
276 		ret = cdns3_init_otg_mode(cdns);  in cdns3_drd_update_mode()
279 		dev_err(cdns->dev, "Unsupported mode of operation %d\n",  in cdns3_drd_update_mode()
280 			cdns->dr_mode);  in cdns3_drd_update_mode()
289 	struct cdns3 *cdns = data;  in cdns3_drd_thread_irq()  local
291 	cdns3_hw_role_switch(cdns);  in cdns3_drd_thread_irq()
307 	struct cdns3 *cdns = data;  in cdns3_drd_irq()  local
310 	if (cdns->dr_mode != USB_DR_MODE_OTG)  in cdns3_drd_irq()
313 	if (cdns->in_lpm)  in cdns3_drd_irq()
316 	reg = readl(&cdns->otg_regs->ivect);  in cdns3_drd_irq()
322 		dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n",  in cdns3_drd_irq()
323 			cdns3_get_id(cdns));  in cdns3_drd_irq()
329 		dev_dbg(cdns->dev, "OTG IRQ: new VBUS: %d\n",  in cdns3_drd_irq()
330 			cdns3_get_vbus(cdns));  in cdns3_drd_irq()
335 	writel(~0, &cdns->otg_regs->ivect);  in cdns3_drd_irq()
339 int cdns3_drd_init(struct cdns3 *cdns)  in cdns3_drd_init()  argument
345 	regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);  in cdns3_drd_init()
358 	cdns->otg_v0_regs = regs;  in cdns3_drd_init()
359 	if (!readl(&cdns->otg_v0_regs->cmd)) {  in cdns3_drd_init()
360 		cdns->version  = CDNS3_CONTROLLER_V0;  in cdns3_drd_init()
361 		cdns->otg_v1_regs = NULL;  in cdns3_drd_init()
362 		cdns->otg_regs = regs;  in cdns3_drd_init()
363 		writel(1, &cdns->otg_v0_regs->simulate);  in cdns3_drd_init()
364 		dev_dbg(cdns->dev, "DRD version v0 (%08x)\n",  in cdns3_drd_init()
365 			 readl(&cdns->otg_v0_regs->version));  in cdns3_drd_init()
367 		cdns->otg_v0_regs = NULL;  in cdns3_drd_init()
368 		cdns->otg_v1_regs = regs;  in cdns3_drd_init()
369 		cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd;  in cdns3_drd_init()
370 		cdns->version  = CDNS3_CONTROLLER_V1;  in cdns3_drd_init()
371 		writel(1, &cdns->otg_v1_regs->simulate);  in cdns3_drd_init()
372 		dev_dbg(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n",  in cdns3_drd_init()
373 			 readl(&cdns->otg_v1_regs->did),  in cdns3_drd_init()
374 			 readl(&cdns->otg_v1_regs->rid));  in cdns3_drd_init()
377 	state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts));  in cdns3_drd_init()
380 	cdns->dr_mode = USB_DR_MODE_OTG;  in cdns3_drd_init()
382 		dev_dbg(cdns->dev, "Controller strapped to HOST\n");  in cdns3_drd_init()
383 		cdns->dr_mode = USB_DR_MODE_HOST;  in cdns3_drd_init()
385 		dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n");  in cdns3_drd_init()
386 		cdns->dr_mode = USB_DR_MODE_PERIPHERAL;  in cdns3_drd_init()
389 	ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq,  in cdns3_drd_init()
393 					dev_name(cdns->dev), cdns);  in cdns3_drd_init()
395 		dev_err(cdns->dev, "couldn't get otg_irq\n");  in cdns3_drd_init()
399 	state = readl(&cdns->otg_regs->sts);  in cdns3_drd_init()
401 		dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n");  in cdns3_drd_init()
408 int cdns3_drd_exit(struct cdns3 *cdns)  in cdns3_drd_exit()  argument
410 	cdns3_otg_disable_irq(cdns);  in cdns3_drd_exit()