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
59 #define PCI_INTEL_BXT_DSM_GUID		"732b85d5-b7a7-4a1b-9ba0-4bbd00ffd511"
69  * struct dwc3_pci - Driver private structure
90 	{ "reset-gpios", &reset_gpios, 1 },
91 	{ "cs-gpios", &cs_gpios, 1 },
111 		return -ENOMEM;  in dwc3_byt_enable_ulpi_refclock()
149 	PROPERTY_ENTRY_STRING("linux,extcon-name", "mrfld_bcove_pwrsrc"),
152 	PROPERTY_ENTRY_BOOL("snps,usb2-gadget-lpm-disable"),
158 	PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"),
159 	PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf),
179 	PROPERTY_ENTRY_BOOL("usb-role-switch"),
180 	PROPERTY_ENTRY_STRING("role-switch-default-mode", "host"),
212 	struct pci_dev			*pdev = dwc->pci;  in dwc3_pci_quirks()
214 	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {  in dwc3_pci_quirks()
215 		if (pdev->device == PCI_DEVICE_ID_INTEL_BXT ||  in dwc3_pci_quirks()
216 		    pdev->device == PCI_DEVICE_ID_INTEL_BXT_M ||  in dwc3_pci_quirks()
217 		    pdev->device == PCI_DEVICE_ID_INTEL_EHL) {  in dwc3_pci_quirks()
218 			guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid);  in dwc3_pci_quirks()
219 			dwc->has_dsm_for_pm = true;  in dwc3_pci_quirks()
222 		if (pdev->device == PCI_DEVICE_ID_INTEL_BYT) {  in dwc3_pci_quirks()
226 			/* On BYT the FW does not always enable the refclock */  in dwc3_pci_quirks()
231 			ret = devm_acpi_dev_add_driver_gpios(&pdev->dev,  in dwc3_pci_quirks()
234 				dev_dbg(&pdev->dev, "failed to add mapping table\n");  in dwc3_pci_quirks()
238 			 * the GPIOs. If the ACPI entry for the GPIO controller  in dwc3_pci_quirks()
240 			 * design GPIOs which all boards seem to use.  in dwc3_pci_quirks()
242 			if (acpi_dev_present("INT33FC", NULL, -1))  in dwc3_pci_quirks()
246 			 * These GPIOs will turn on the USB2 PHY. Note that we have to  in dwc3_pci_quirks()
250 			gpio = gpiod_get_optional(&pdev->dev, "cs", GPIOD_OUT_LOW);  in dwc3_pci_quirks()
257 			gpio = gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW);  in dwc3_pci_quirks()
269 			 * and patch the phy dev-name into the lookup table so  in dwc3_pci_quirks()
270 			 * that the phy-driver can get the GPIOs.  in dwc3_pci_quirks()
272 			dwc->dwc3->id = PLATFORM_DEVID_NONE;  in dwc3_pci_quirks()
283 				dev_info(&pdev->dev, "Using TUSB1211 phy for charger detection\n");  in dwc3_pci_quirks()
289 	return device_add_software_node(&dwc->dwc3->dev, swnode);  in dwc3_pci_quirks()
296 	struct platform_device *dwc3 = dwc->dwc3;  in dwc3_pci_resume_work()
299 	ret = pm_runtime_get_sync(&dwc3->dev);  in dwc3_pci_resume_work()
301 		pm_runtime_put_sync_autosuspend(&dwc3->dev);  in dwc3_pci_resume_work()
305 	pm_runtime_mark_last_busy(&dwc3->dev);  in dwc3_pci_resume_work()
306 	pm_runtime_put_sync_autosuspend(&dwc3->dev);  in dwc3_pci_resume_work()
315 	struct device		*dev = &pci->dev;  in dwc3_pci_probe()
320 		return -ENODEV;  in dwc3_pci_probe()
327 		return -ENOMEM;  in dwc3_pci_probe()
329 	dwc->dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO);  in dwc3_pci_probe()
330 	if (!dwc->dwc3)  in dwc3_pci_probe()
331 		return -ENOMEM;  in dwc3_pci_probe()
340 	res[1].start	= pci->irq;  in dwc3_pci_probe()
344 	ret = platform_device_add_resources(dwc->dwc3, res, ARRAY_SIZE(res));  in dwc3_pci_probe()
350 	dwc->pci = pci;  in dwc3_pci_probe()
351 	dwc->dwc3->dev.parent = dev;  in dwc3_pci_probe()
352 	ACPI_COMPANION_SET(&dwc->dwc3->dev, ACPI_COMPANION(dev));  in dwc3_pci_probe()
354 	ret = dwc3_pci_quirks(dwc, (void *)id->driver_data);  in dwc3_pci_probe()
358 	ret = platform_device_add(dwc->dwc3);  in dwc3_pci_probe()
368 	INIT_WORK(&dwc->wakeup_work, dwc3_pci_resume_work);  in dwc3_pci_probe()
373 	device_remove_software_node(&dwc->dwc3->dev);  in dwc3_pci_probe()
374 	platform_device_put(dwc->dwc3);  in dwc3_pci_probe()
381 	struct pci_dev		*pdev = dwc->pci;  in dwc3_pci_remove()
383 	if (pdev->device == PCI_DEVICE_ID_INTEL_BYT)  in dwc3_pci_remove()
386 	cancel_work_sync(&dwc->wakeup_work);  in dwc3_pci_remove()
388 	device_init_wakeup(&pci->dev, false);  in dwc3_pci_remove()
389 	pm_runtime_get(&pci->dev);  in dwc3_pci_remove()
390 	device_remove_software_node(&dwc->dwc3->dev);  in dwc3_pci_remove()
391 	platform_device_unregister(dwc->dwc3);  in dwc3_pci_remove()
444 	if (!dwc->has_dsm_for_pm)  in dwc3_pci_dsm()
450 	obj = acpi_evaluate_dsm(ACPI_HANDLE(&dwc->pci->dev), &dwc->guid,  in dwc3_pci_dsm()
453 		dev_err(&dwc->pci->dev, "failed to evaluate _DSM\n");  in dwc3_pci_dsm()
454 		return -EIO;  in dwc3_pci_dsm()
471 	return -EBUSY;  in dwc3_pci_runtime_suspend()
483 	queue_work(pm_wq, &dwc->wakeup_work);  in dwc3_pci_runtime_resume()
512 	.name		= "dwc3-pci",