1 // SPDX-License-Identifier: GPL-2.0
3  * Cadence USBSS DRD Driver.
5  * Copyright (C) 2018-2020 Cadence.
6  * Copyright (C) 2017-2018 NXP
11  *         Pawel Laszczak <pawell@cadence.com>
22 #include "gadget-export.h"
29 	ret = phy_power_on(cdns->usb2_phy);  in set_phy_power_on()
33 	ret = phy_power_on(cdns->usb3_phy);  in set_phy_power_on()
35 		phy_power_off(cdns->usb2_phy);  in set_phy_power_on()
42 	phy_power_off(cdns->usb3_phy);  in set_phy_power_off()
43 	phy_power_off(cdns->usb2_phy);  in set_phy_power_off()
47  * cdns3_plat_probe - probe for cdns3 core device
54 	struct device *dev = &pdev->dev;  in cdns3_plat_probe()
62 		return -ENOMEM;  in cdns3_plat_probe()
64 	cdns->dev = dev;  in cdns3_plat_probe()
65 	cdns->pdata = dev_get_platdata(dev);  in cdns3_plat_probe()
73 	cdns->xhci_res[0].start = ret;  in cdns3_plat_probe()
74 	cdns->xhci_res[0].end = ret;  in cdns3_plat_probe()
75 	cdns->xhci_res[0].flags = IORESOURCE_IRQ | irq_get_trigger_type(ret);  in cdns3_plat_probe()
76 	cdns->xhci_res[0].name = "host";  in cdns3_plat_probe()
81 		return -ENXIO;  in cdns3_plat_probe()
84 	cdns->xhci_res[1] = *res;  in cdns3_plat_probe()
86 	cdns->dev_irq = platform_get_irq_byname(pdev, "peripheral");  in cdns3_plat_probe()
88 	if (cdns->dev_irq < 0)  in cdns3_plat_probe()
89 		return cdns->dev_irq;  in cdns3_plat_probe()
94 	cdns->dev_regs	= regs;  in cdns3_plat_probe()
96 	cdns->otg_irq = platform_get_irq_byname(pdev, "otg");  in cdns3_plat_probe()
97 	if (cdns->otg_irq < 0)  in cdns3_plat_probe()
98 		return cdns->otg_irq;  in cdns3_plat_probe()
103 		return -ENXIO;  in cdns3_plat_probe()
106 	cdns->phyrst_a_enable = device_property_read_bool(dev, "cdns,phyrst-a-enable");  in cdns3_plat_probe()
108 	cdns->otg_res = *res;  in cdns3_plat_probe()
110 	cdns->wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup");  in cdns3_plat_probe()
111 	if (cdns->wakeup_irq == -EPROBE_DEFER)  in cdns3_plat_probe()
112 		return cdns->wakeup_irq;  in cdns3_plat_probe()
114 	if (cdns->wakeup_irq < 0) {  in cdns3_plat_probe()
116 		cdns->wakeup_irq = 0x0;  in cdns3_plat_probe()
119 	cdns->usb2_phy = devm_phy_optional_get(dev, "cdns3,usb2-phy");  in cdns3_plat_probe()
120 	if (IS_ERR(cdns->usb2_phy))  in cdns3_plat_probe()
121 		return PTR_ERR(cdns->usb2_phy);  in cdns3_plat_probe()
123 	ret = phy_init(cdns->usb2_phy);  in cdns3_plat_probe()
127 	cdns->usb3_phy = devm_phy_optional_get(dev, "cdns3,usb3-phy");  in cdns3_plat_probe()
128 	if (IS_ERR(cdns->usb3_phy))  in cdns3_plat_probe()
129 		return PTR_ERR(cdns->usb3_phy);  in cdns3_plat_probe()
131 	ret = phy_init(cdns->usb3_phy);  in cdns3_plat_probe()
139 	cdns->gadget_init = cdns3_gadget_init;  in cdns3_plat_probe()
148 	if (!(cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW)))  in cdns3_plat_probe()
165 	phy_exit(cdns->usb3_phy);  in cdns3_plat_probe()
167 	phy_exit(cdns->usb2_phy);  in cdns3_plat_probe()
173  * cdns3_plat_remove() - unbind drd driver and clean up
181 	struct device *dev = cdns->dev;  in cdns3_plat_remove()
188 	phy_exit(cdns->usb2_phy);  in cdns3_plat_remove()
189 	phy_exit(cdns->usb3_phy);  in cdns3_plat_remove()
201 	if (cdns->pdata && cdns->pdata->platform_suspend)  in cdns3_set_platform_suspend()
202 		ret = cdns->pdata->platform_suspend(dev, suspend, wakeup);  in cdns3_set_platform_suspend()
213 	if (cdns->in_lpm)  in cdns3_controller_suspend()
221 	cdns3_set_platform_suspend(cdns->dev, true, wakeup);  in cdns3_controller_suspend()
223 	spin_lock_irqsave(&cdns->lock, flags);  in cdns3_controller_suspend()
224 	cdns->in_lpm = true;  in cdns3_controller_suspend()
225 	spin_unlock_irqrestore(&cdns->lock, flags);  in cdns3_controller_suspend()
226 	dev_dbg(cdns->dev, "%s ends\n", __func__);  in cdns3_controller_suspend()
237 	if (!cdns->in_lpm)  in cdns3_controller_resume()
241 		phy_exit(cdns->usb2_phy);  in cdns3_controller_resume()
242 		ret = phy_init(cdns->usb2_phy);  in cdns3_controller_resume()
246 		phy_exit(cdns->usb3_phy);  in cdns3_controller_resume()
247 		ret = phy_init(cdns->usb3_phy);  in cdns3_controller_resume()
256 	cdns3_set_platform_suspend(cdns->dev, false, false);  in cdns3_controller_resume()
258 	spin_lock_irqsave(&cdns->lock, flags);  in cdns3_controller_resume()
260 	cdns->in_lpm = false;  in cdns3_controller_resume()
261 	spin_unlock_irqrestore(&cdns->lock, flags);  in cdns3_controller_resume()
262 	if (cdns->wakeup_pending) {  in cdns3_controller_resume()
263 		cdns->wakeup_pending = false;  in cdns3_controller_resume()
264 		enable_irq(cdns->wakeup_irq);  in cdns3_controller_resume()
266 	dev_dbg(cdns->dev, "%s ends\n", __func__);  in cdns3_controller_resume()
294 	if (device_may_wakeup(dev) && cdns->wakeup_irq)  in cdns3_plat_suspend()
295 		enable_irq_wake(cdns->wakeup_irq);  in cdns3_plat_suspend()
325 		.name	= "cdns-usb3",
334 MODULE_AUTHOR("Pawel Laszczak <pawell@cadence.com>");
336 MODULE_DESCRIPTION("Cadence USB3 DRD Controller Driver");