1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-keystone.c - Keystone Specific Glue layer
5  * Copyright (C) 2010-2013 Texas Instruments Incorporated - https://www.ti.com
7  * Author: WingMan Kwok <w-kwok2@ti.com>
14 #include <linux/dma-mapping.h>
56 	val = kdwc3_readl(kdwc->usbss, USBSS_IRQENABLE_SET_0);  in kdwc3_enable_irqs()
58 	kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_SET_0, val);  in kdwc3_enable_irqs()
65 	val = kdwc3_readl(kdwc->usbss, USBSS_IRQENABLE_SET_0);  in kdwc3_disable_irqs()
67 	kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_SET_0, val);  in kdwc3_disable_irqs()
74 	kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_CLR_0, USBSS_IRQ_COREIRQ_CLR);  in dwc3_keystone_interrupt()
75 	kdwc3_writel(kdwc->usbss, USBSS_IRQSTATUS_0, USBSS_IRQ_EVENT_ST);  in dwc3_keystone_interrupt()
76 	kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_SET_0, USBSS_IRQ_COREIRQ_EN);  in dwc3_keystone_interrupt()
77 	kdwc3_writel(kdwc->usbss, USBSS_IRQ_EOI, USBSS_IRQ_EOI_LINE(0));  in dwc3_keystone_interrupt()
84 	struct device		*dev = &pdev->dev;  in kdwc3_probe()
85 	struct device_node	*node = pdev->dev.of_node;  in kdwc3_probe()
91 		return -ENOMEM;  in kdwc3_probe()
95 	kdwc->dev = dev;  in kdwc3_probe()
97 	kdwc->usbss = devm_platform_ioremap_resource(pdev, 0);  in kdwc3_probe()
98 	if (IS_ERR(kdwc->usbss))  in kdwc3_probe()
99 		return PTR_ERR(kdwc->usbss);  in kdwc3_probe()
102 	kdwc->usb3_phy = devm_phy_optional_get(dev, "usb3-phy");  in kdwc3_probe()
103 	if (IS_ERR(kdwc->usb3_phy))  in kdwc3_probe()
104 		return dev_err_probe(dev, PTR_ERR(kdwc->usb3_phy), "couldn't get usb3 phy\n");  in kdwc3_probe()
106 	phy_pm_runtime_get_sync(kdwc->usb3_phy);  in kdwc3_probe()
108 	error = phy_reset(kdwc->usb3_phy);  in kdwc3_probe()
114 	error = phy_init(kdwc->usb3_phy);  in kdwc3_probe()
120 	error = phy_power_on(kdwc->usb3_phy);  in kdwc3_probe()
123 		phy_exit(kdwc->usb3_phy);  in kdwc3_probe()
127 	pm_runtime_enable(kdwc->dev);  in kdwc3_probe()
128 	error = pm_runtime_get_sync(kdwc->dev);  in kdwc3_probe()
130 		dev_err(kdwc->dev, "pm_runtime_get_sync failed, error %d\n",  in kdwc3_probe()
136 	if (of_device_is_compatible(node, "ti,am654-dwc3"))  in kdwc3_probe()
148 		dev_err(dev, "failed to request IRQ #%d --> %d\n",  in kdwc3_probe()
158 		dev_err(&pdev->dev, "failed to create dwc3 core\n");  in kdwc3_probe()
167 	pm_runtime_put_sync(kdwc->dev);  in kdwc3_probe()
168 	pm_runtime_disable(kdwc->dev);  in kdwc3_probe()
169 	phy_power_off(kdwc->usb3_phy);  in kdwc3_probe()
170 	phy_exit(kdwc->usb3_phy);  in kdwc3_probe()
171 	phy_pm_runtime_put_sync(kdwc->usb3_phy);  in kdwc3_probe()
188 	struct device_node *node = pdev->dev.of_node;  in kdwc3_remove()
190 	if (!of_device_is_compatible(node, "ti,am654-dwc3"))  in kdwc3_remove()
193 	device_for_each_child(&pdev->dev, NULL, kdwc3_remove_core);  in kdwc3_remove()
194 	pm_runtime_put_sync(kdwc->dev);  in kdwc3_remove()
195 	pm_runtime_disable(kdwc->dev);  in kdwc3_remove()
197 	phy_power_off(kdwc->usb3_phy);  in kdwc3_remove()
198 	phy_exit(kdwc->usb3_phy);  in kdwc3_remove()
199 	phy_pm_runtime_put_sync(kdwc->usb3_phy);  in kdwc3_remove()
203 	{ .compatible = "ti,keystone-dwc3", },
204 	{ .compatible = "ti,am654-dwc3" },
213 		.name	= "keystone-dwc3",
220 MODULE_ALIAS("platform:keystone-dwc3");
221 MODULE_AUTHOR("WingMan Kwok <w-kwok2@ti.com>");
223 MODULE_DESCRIPTION("DesignWare USB3 KEYSTONE Glue Layer");