1 // SPDX-License-Identifier: GPL-2.0
3  * SuperH EHCI host controller driver
7  * Based on ohci-sh.c and ehci-atmel.c.
19 	struct ehci_hcd	*ehci = hcd_to_ehci(hcd);  in ehci_sh_reset()  local
21 	ehci->caps = hcd->regs;  in ehci_sh_reset()
28 	.product_desc			= "SuperH EHCI",
32 	 * generic hardware linkage
82 		return -ENODEV;  in ehci_hcd_sh_probe()
86 		ret = -ENODEV;  in ehci_hcd_sh_probe()
91 	hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev,  in ehci_hcd_sh_probe()
92 			     dev_name(&pdev->dev));  in ehci_hcd_sh_probe()
94 		ret = -ENOMEM;  in ehci_hcd_sh_probe()
99 	hcd->regs = devm_ioremap_resource(&pdev->dev, res);  in ehci_hcd_sh_probe()
100 	if (IS_ERR(hcd->regs)) {  in ehci_hcd_sh_probe()
101 		ret = PTR_ERR(hcd->regs);  in ehci_hcd_sh_probe()
104 	hcd->rsrc_start = res->start;  in ehci_hcd_sh_probe()
105 	hcd->rsrc_len = resource_size(res);  in ehci_hcd_sh_probe()
107 	priv = devm_kzalloc(&pdev->dev, sizeof(struct ehci_sh_priv),  in ehci_hcd_sh_probe()
110 		ret = -ENOMEM;  in ehci_hcd_sh_probe()
115 	priv->fclk = devm_clk_get(&pdev->dev, "usb_fck");  in ehci_hcd_sh_probe()
116 	if (IS_ERR(priv->fclk))  in ehci_hcd_sh_probe()
117 		priv->fclk = NULL;  in ehci_hcd_sh_probe()
119 	priv->iclk = devm_clk_get(&pdev->dev, "usb_ick");  in ehci_hcd_sh_probe()
120 	if (IS_ERR(priv->iclk))  in ehci_hcd_sh_probe()
121 		priv->iclk = NULL;  in ehci_hcd_sh_probe()
123 	clk_enable(priv->fclk);  in ehci_hcd_sh_probe()
124 	clk_enable(priv->iclk);  in ehci_hcd_sh_probe()
128 		dev_err(&pdev->dev, "Failed to add hcd");  in ehci_hcd_sh_probe()
131 	device_wakeup_enable(hcd->self.controller);  in ehci_hcd_sh_probe()
133 	priv->hcd = hcd;  in ehci_hcd_sh_probe()
139 	clk_disable(priv->iclk);  in ehci_hcd_sh_probe()
140 	clk_disable(priv->fclk);  in ehci_hcd_sh_probe()
145 	dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), ret);  in ehci_hcd_sh_probe()
153 	struct usb_hcd *hcd = priv->hcd;  in ehci_hcd_sh_remove()
158 	clk_disable(priv->fclk);  in ehci_hcd_sh_remove()
159 	clk_disable(priv->iclk);  in ehci_hcd_sh_remove()
167 	struct usb_hcd *hcd = priv->hcd;  in ehci_hcd_sh_shutdown()
169 	if (hcd->driver->shutdown)  in ehci_hcd_sh_shutdown()
170 		hcd->driver->shutdown(hcd);  in ehci_hcd_sh_shutdown()