1 // SPDX-License-Identifier: GPL-2.0
3  * dwc3-pci.c - PCI Specific glue layer
5  * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
49 #define PCI_INTEL_BXT_DSM_GUID		"732b85d5-b7a7-4a1b-9ba0-4bbd00ffd511"
59  * struct dwc3_pci - Driver private structure
80 	{ "reset-gpios", &reset_gpios, 1 },
81 	{ "cs-gpios", &cs_gpios, 1 },
101 		return -ENOMEM;  in dwc3_byt_enable_ulpi_refclock()
124 	PROPERTY_ENTRY_STRING("linux,extcon-name", "mrfld_bcove_pwrsrc"),
127 	PROPERTY_ENTRY_BOOL("snps,usb2-gadget-lpm-disable"),
133 	PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"),
134 	PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf),
154 	PROPERTY_ENTRY_BOOL("usb-role-switch"),
155 	PROPERTY_ENTRY_STRING("role-switch-default-mode", "host"),
178 	struct pci_dev			*pdev = dwc->pci;  in dwc3_pci_quirks()
180 	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {  in dwc3_pci_quirks()
181 		if (pdev->device == PCI_DEVICE_ID_INTEL_BXT ||  in dwc3_pci_quirks()
182 		    pdev->device == PCI_DEVICE_ID_INTEL_BXT_M ||  in dwc3_pci_quirks()
183 		    pdev->device == PCI_DEVICE_ID_INTEL_EHL) {  in dwc3_pci_quirks()
184 			guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid);  in dwc3_pci_quirks()
185 			dwc->has_dsm_for_pm = true;  in dwc3_pci_quirks()
188 		if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) {  in dwc3_pci_quirks()
197 			ret = devm_acpi_dev_add_driver_gpios(&pdev->dev,  in dwc3_pci_quirks()
200 				dev_dbg(&pdev->dev, "failed to add mapping table\n");  in dwc3_pci_quirks()
210 			 * These GPIOs will turn on the USB2 PHY. Note that we have to  in dwc3_pci_quirks()
214 			gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);  in dwc3_pci_quirks()
221 			gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);  in dwc3_pci_quirks()
240 	struct platform_device *dwc3 = dwc->dwc3;  in dwc3_pci_resume_work()
243 	ret = pm_runtime_get_sync(&dwc3->dev);  in dwc3_pci_resume_work()
245 		pm_runtime_put_sync_autosuspend(&dwc3->dev);  in dwc3_pci_resume_work()
249 	pm_runtime_mark_last_busy(&dwc3->dev);  in dwc3_pci_resume_work()
250 	pm_runtime_put_sync_autosuspend(&dwc3->dev);  in dwc3_pci_resume_work()
259 	struct device		*dev = &pci->dev;  in dwc3_pci_probe()
264 		return -ENODEV;  in dwc3_pci_probe()
271 		return -ENOMEM;  in dwc3_pci_probe()
273 	dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);  in dwc3_pci_probe()
274 	if (!dwc->dwc3)  in dwc3_pci_probe()
275 		return -ENOMEM;  in dwc3_pci_probe()
284 	res[1].start	= pci->irq;  in dwc3_pci_probe()
288 	ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));  in dwc3_pci_probe()
294 	dwc->pci = pci;  in dwc3_pci_probe()
295 	dwc->dwc3->dev.parent = dev;  in dwc3_pci_probe()
296 	ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev));  in dwc3_pci_probe()
298 	ret = device_add_software_node(&dwc->dwc3->dev, (void *)id->driver_data);  in dwc3_pci_probe()
306 	ret = platform_device_add(dwc->dwc3);  in dwc3_pci_probe()
316 	INIT_WORK(&dwc->wakeup_work, dwc3_pci_resume_work);  in dwc3_pci_probe()
321 	device_remove_software_node(&dwc->dwc3->dev);  in dwc3_pci_probe()
322 	platform_device_put(dwc->dwc3);  in dwc3_pci_probe()
329 	struct pci_dev		*pdev = dwc->pci;  in dwc3_pci_remove()
331 	if (pdev->device == PCI_DEVICE_ID_INTEL_BYT)  in dwc3_pci_remove()
334 	cancel_work_sync(&dwc->wakeup_work);  in dwc3_pci_remove()
336 	device_init_wakeup(&pci->dev, false);  in dwc3_pci_remove()
337 	pm_runtime_get(&pci->dev);  in dwc3_pci_remove()
338 	device_remove_software_node(&dwc->dwc3->dev);  in dwc3_pci_remove()
339 	platform_device_unregister(dwc->dwc3);  in dwc3_pci_remove()
432 	if (!dwc->has_dsm_for_pm)  in dwc3_pci_dsm()
438 	obj = acpi_evaluate_dsm(ACPI_HANDLE(&dwc->pci->dev), &dwc->guid,  in dwc3_pci_dsm()
441 		dev_err(&dwc->pci->dev, "failed to evaluate _DSM\n");  in dwc3_pci_dsm()
442 		return -EIO;  in dwc3_pci_dsm()
459 	return -EBUSY;  in dwc3_pci_runtime_suspend()
471 	queue_work(pm_wq, &dwc->wakeup_work);  in dwc3_pci_runtime_resume()
500 	.name		= "dwc3-pci",