1 // SPDX-License-Identifier: GPL-2.0+
20 #include "ehci.h"
27 #define hcd_to_ehci_hcd_mv(h) ((struct ehci_hcd_mv *)hcd_to_ehci(h)->priv)
30 	/* Which mode does this ehci running OTG/Host ? */
49 	retval = clk_prepare_enable(ehci_mv->clk);  in mv_ehci_enable()
53 	retval = phy_init(ehci_mv->phy);  in mv_ehci_enable()
55 		clk_disable_unprepare(ehci_mv->clk);  in mv_ehci_enable()
62 	phy_exit(ehci_mv->phy);  in mv_ehci_disable()
63 	clk_disable_unprepare(ehci_mv->clk);  in mv_ehci_disable()
68 	struct device *dev = hcd->self.controller;  in mv_ehci_reset()
70 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);  in mv_ehci_reset()  local
75 		dev_err(dev, "Can not find private ehci data\n");  in mv_ehci_reset()
76 		return -ENODEV;  in mv_ehci_reset()
79 	hcd->has_tt = 1;  in mv_ehci_reset()
85 	if (of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) {  in mv_ehci_reset()
86 		status = ehci_readl(ehci, &ehci->regs->port_status[0]);  in mv_ehci_reset()
88 		ehci_writel(ehci, status, &ehci->regs->port_status[0]);  in mv_ehci_reset()
90 		ehci_writel(ehci, status, &ehci->regs->port_status[0]);  in mv_ehci_reset()
105 	struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);  in mv_ehci_probe()
107 	struct ehci_hcd *ehci;  in mv_ehci_probe()  local
115 		return -ENODEV;  in mv_ehci_probe()
117 	hcd = usb_create_hcd(&ehci_platform_hc_driver, &pdev->dev, dev_name(&pdev->dev));  in mv_ehci_probe()
119 		return -ENOMEM;  in mv_ehci_probe()
124 	ehci_mv->mode = MV_USB_MODE_HOST;  in mv_ehci_probe()
126 		ehci_mv->mode = pdata->mode;  in mv_ehci_probe()
127 		ehci_mv->set_vbus = pdata->set_vbus;  in mv_ehci_probe()
130 	ehci_mv->phy = devm_phy_optional_get(&pdev->dev, "usb");  in mv_ehci_probe()
131 	if (IS_ERR(ehci_mv->phy)) {  in mv_ehci_probe()
132 		retval = PTR_ERR(ehci_mv->phy);  in mv_ehci_probe()
133 		if (retval != -EPROBE_DEFER)  in mv_ehci_probe()
134 			dev_err(&pdev->dev, "Failed to get phy.\n");  in mv_ehci_probe()
138 	ehci_mv->clk = devm_clk_get(&pdev->dev, NULL);  in mv_ehci_probe()
139 	if (IS_ERR(ehci_mv->clk)) {  in mv_ehci_probe()
140 		dev_err(&pdev->dev, "error getting clock\n");  in mv_ehci_probe()
141 		retval = PTR_ERR(ehci_mv->clk);  in mv_ehci_probe()
145 	ehci_mv->base = devm_platform_get_and_ioremap_resource(pdev, 0, &r);  in mv_ehci_probe()
146 	if (IS_ERR(ehci_mv->base)) {  in mv_ehci_probe()
147 		retval = PTR_ERR(ehci_mv->base);  in mv_ehci_probe()
153 		dev_err(&pdev->dev, "init phy error %d\n", retval);  in mv_ehci_probe()
157 	ehci_mv->cap_regs =  in mv_ehci_probe()
158 		(void __iomem *) ((unsigned long) ehci_mv->base + U2x_CAPREGS_OFFSET);  in mv_ehci_probe()
159 	offset = readl(ehci_mv->cap_regs) & CAPLENGTH_MASK;  in mv_ehci_probe()
160 	ehci_mv->op_regs =  in mv_ehci_probe()
161 		(void __iomem *) ((unsigned long) ehci_mv->cap_regs + offset);  in mv_ehci_probe()
163 	hcd->rsrc_start = r->start;  in mv_ehci_probe()
164 	hcd->rsrc_len = resource_size(r);  in mv_ehci_probe()
165 	hcd->regs = ehci_mv->op_regs;  in mv_ehci_probe()
170 	hcd->irq = retval;  in mv_ehci_probe()
172 	ehci = hcd_to_ehci(hcd);  in mv_ehci_probe()
173 	ehci->caps = (struct ehci_caps __iomem *) ehci_mv->cap_regs;  in mv_ehci_probe()
175 	if (ehci_mv->mode == MV_USB_MODE_OTG) {  in mv_ehci_probe()
176 		ehci_mv->otg = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);  in mv_ehci_probe()
177 		if (IS_ERR(ehci_mv->otg)) {  in mv_ehci_probe()
178 			retval = PTR_ERR(ehci_mv->otg);  in mv_ehci_probe()
180 			if (retval == -ENXIO)  in mv_ehci_probe()
181 				dev_info(&pdev->dev, "MV_USB_MODE_OTG "  in mv_ehci_probe()
184 				dev_err(&pdev->dev,  in mv_ehci_probe()
189 		retval = otg_set_host(ehci_mv->otg->otg, &hcd->self);  in mv_ehci_probe()
191 			dev_err(&pdev->dev,  in mv_ehci_probe()
193 			retval = -ENODEV;  in mv_ehci_probe()
199 		if (ehci_mv->set_vbus)  in mv_ehci_probe()
200 			ehci_mv->set_vbus(1);  in mv_ehci_probe()
202 		retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);  in mv_ehci_probe()
204 			dev_err(&pdev->dev,  in mv_ehci_probe()
208 		device_wakeup_enable(hcd->self.controller);  in mv_ehci_probe()
211 	if (of_usb_get_phy_mode(pdev->dev.of_node) == USBPHY_INTERFACE_MODE_HSIC) {  in mv_ehci_probe()
212 		status = ehci_readl(ehci, &ehci->regs->port_status[0]);  in mv_ehci_probe()
216 		ehci_writel(ehci, status, &ehci->regs->port_status[0]);  in mv_ehci_probe()
219 	dev_info(&pdev->dev,  in mv_ehci_probe()
220 		 "successful find EHCI device with regs 0x%p irq %d"  in mv_ehci_probe()
221 		 " working in %s mode\n", hcd->regs, hcd->irq,  in mv_ehci_probe()
222 		 ehci_mv->mode == MV_USB_MODE_OTG ? "OTG" : "Host");  in mv_ehci_probe()
227 	if (ehci_mv->set_vbus)  in mv_ehci_probe()
228 		ehci_mv->set_vbus(0);  in mv_ehci_probe()
242 	if (hcd->rh_registered)  in mv_ehci_remove()
245 	if (!IS_ERR_OR_NULL(ehci_mv->otg))  in mv_ehci_remove()
246 		otg_set_host(ehci_mv->otg->otg, NULL);  in mv_ehci_remove()
248 	if (ehci_mv->mode == MV_USB_MODE_HOST) {  in mv_ehci_remove()
249 		if (ehci_mv->set_vbus)  in mv_ehci_remove()
250 			ehci_mv->set_vbus(0);  in mv_ehci_remove()
259 	{"pxa-u2oehci", 0},
260 	{"pxa-sph", 0},
268 	if (!hcd->rh_registered)  in mv_ehci_shutdown()
271 	if (hcd->driver->shutdown)  in mv_ehci_shutdown()
272 		hcd->driver->shutdown(hcd);  in mv_ehci_shutdown()
276 	{ .compatible = "marvell,pxau2o-ehci", },
285 		.name = "mv-ehci",
295 		return -ENODEV;  in ehci_platform_init()
308 MODULE_DESCRIPTION("Marvell EHCI driver");
311 MODULE_ALIAS("mv-ehci");