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()
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()
98 	hcd->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in ehci_hcd_sh_probe()
99 	if (IS_ERR(hcd->regs)) {  in ehci_hcd_sh_probe()
100 		ret = PTR_ERR(hcd->regs);  in ehci_hcd_sh_probe()
103 	hcd->rsrc_start = res->start;  in ehci_hcd_sh_probe()
104 	hcd->rsrc_len = resource_size(res);  in ehci_hcd_sh_probe()
106 	priv = devm_kzalloc(&pdev->dev, sizeof(struct ehci_sh_priv),  in ehci_hcd_sh_probe()
109 		ret = -ENOMEM;  in ehci_hcd_sh_probe()
114 	priv->fclk = devm_clk_get(&pdev->dev, "usb_fck");  in ehci_hcd_sh_probe()
115 	if (IS_ERR(priv->fclk))  in ehci_hcd_sh_probe()
116 		priv->fclk = NULL;  in ehci_hcd_sh_probe()
118 	priv->iclk = devm_clk_get(&pdev->dev, "usb_ick");  in ehci_hcd_sh_probe()
119 	if (IS_ERR(priv->iclk))  in ehci_hcd_sh_probe()
120 		priv->iclk = NULL;  in ehci_hcd_sh_probe()
122 	clk_enable(priv->fclk);  in ehci_hcd_sh_probe()
123 	clk_enable(priv->iclk);  in ehci_hcd_sh_probe()
127 		dev_err(&pdev->dev, "Failed to add hcd");  in ehci_hcd_sh_probe()
130 	device_wakeup_enable(hcd->self.controller);  in ehci_hcd_sh_probe()
132 	priv->hcd = hcd;  in ehci_hcd_sh_probe()
138 	clk_disable(priv->iclk);  in ehci_hcd_sh_probe()
139 	clk_disable(priv->fclk);  in ehci_hcd_sh_probe()
144 	dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), ret);  in ehci_hcd_sh_probe()
152 	struct usb_hcd *hcd = priv->hcd;  in ehci_hcd_sh_remove()
157 	clk_disable(priv->fclk);  in ehci_hcd_sh_remove()
158 	clk_disable(priv->iclk);  in ehci_hcd_sh_remove()
164 	struct usb_hcd *hcd = priv->hcd;  in ehci_hcd_sh_shutdown()
166 	if (hcd->driver->shutdown)  in ehci_hcd_sh_shutdown()
167 		hcd->driver->shutdown(hcd);  in ehci_hcd_sh_shutdown()