1 // SPDX-License-Identifier: GPL-2.0
3  * xhci-plat.c - xHCI host controller driver platform Bus Glue.
5  * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com
12 #include <linux/dma-mapping.h>
24 #include "xhci-plat.h"
25 #include "xhci-mvebu.h"
42 	if (priv->plat_start)  in xhci_priv_plat_start()
43 		priv->plat_start(hcd);  in xhci_priv_plat_start()
50 	if (!priv->init_quirk)  in xhci_priv_init_quirk()
53 	return priv->init_quirk(hcd);  in xhci_priv_init_quirk()
60 	if (!priv->suspend_quirk)  in xhci_priv_suspend_quirk()
63 	return priv->suspend_quirk(hcd);  in xhci_priv_suspend_quirk()
70 	if (!priv->resume_quirk)  in xhci_priv_resume_quirk()
73 	return priv->resume_quirk(hcd);  in xhci_priv_resume_quirk()
80 	xhci->quirks |= priv->quirks;  in xhci_plat_quirks()
117 		.compatible = "generic-xhci",
119 		.compatible = "xhci-platform",
121 		.compatible = "marvell,armada-375-xhci",
124 		.compatible = "marvell,armada-380-xhci",
127 		.compatible = "marvell,armada3700-xhci",
130 		.compatible = "brcm,xhci-brcm-v2",
133 		.compatible = "brcm,bcm7445-xhci",
154 		return -ENODEV;  in xhci_plat_probe()
163 		sysdev = &pdev->dev;  in xhci_plat_probe()
169 	pm_runtime_set_active(&pdev->dev);  in xhci_plat_probe()
170 	pm_runtime_enable(&pdev->dev);  in xhci_plat_probe()
171 	pm_runtime_get_noresume(&pdev->dev);  in xhci_plat_probe()
173 	hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,  in xhci_plat_probe()
174 			       dev_name(&pdev->dev), NULL);  in xhci_plat_probe()
176 		ret = -ENOMEM;  in xhci_plat_probe()
180 	hcd->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in xhci_plat_probe()
181 	if (IS_ERR(hcd->regs)) {  in xhci_plat_probe()
182 		ret = PTR_ERR(hcd->regs);  in xhci_plat_probe()
186 	hcd->rsrc_start = res->start;  in xhci_plat_probe()
187 	hcd->rsrc_len = resource_size(res);  in xhci_plat_probe()
191 	xhci->allow_single_roothub = 1;  in xhci_plat_probe()
197 	xhci->reg_clk = devm_clk_get_optional(&pdev->dev, "reg");  in xhci_plat_probe()
198 	if (IS_ERR(xhci->reg_clk)) {  in xhci_plat_probe()
199 		ret = PTR_ERR(xhci->reg_clk);  in xhci_plat_probe()
203 	xhci->clk = devm_clk_get_optional(&pdev->dev, NULL);  in xhci_plat_probe()
204 	if (IS_ERR(xhci->clk)) {  in xhci_plat_probe()
205 		ret = PTR_ERR(xhci->clk);  in xhci_plat_probe()
209 	xhci->reset = devm_reset_control_array_get_optional_shared(&pdev->dev);  in xhci_plat_probe()
210 	if (IS_ERR(xhci->reset)) {  in xhci_plat_probe()
211 		ret = PTR_ERR(xhci->reset);  in xhci_plat_probe()
215 	ret = reset_control_deassert(xhci->reset);  in xhci_plat_probe()
219 	ret = clk_prepare_enable(xhci->reg_clk);  in xhci_plat_probe()
223 	ret = clk_prepare_enable(xhci->clk);  in xhci_plat_probe()
233 	device_set_wakeup_capable(&pdev->dev, true);  in xhci_plat_probe()
235 	xhci->main_hcd = hcd;  in xhci_plat_probe()
238 	xhci->imod_interval = 40000;  in xhci_plat_probe()
241 	for (tmpdev = &pdev->dev; tmpdev; tmpdev = tmpdev->parent) {  in xhci_plat_probe()
243 		if (device_property_read_bool(tmpdev, "usb2-lpm-disable"))  in xhci_plat_probe()
244 			xhci->quirks |= XHCI_HW_LPM_DISABLE;  in xhci_plat_probe()
246 		if (device_property_read_bool(tmpdev, "usb3-lpm-capable"))  in xhci_plat_probe()
247 			xhci->quirks |= XHCI_LPM_SUPPORT;  in xhci_plat_probe()
249 		if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))  in xhci_plat_probe()
250 			xhci->quirks |= XHCI_BROKEN_PORT_PED;  in xhci_plat_probe()
252 		device_property_read_u32(tmpdev, "imod-interval-ns",  in xhci_plat_probe()
253 					 &xhci->imod_interval);  in xhci_plat_probe()
256 	hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);  in xhci_plat_probe()
257 	if (IS_ERR(hcd->usb_phy)) {  in xhci_plat_probe()
258 		ret = PTR_ERR(hcd->usb_phy);  in xhci_plat_probe()
259 		if (ret == -EPROBE_DEFER)  in xhci_plat_probe()
261 		hcd->usb_phy = NULL;  in xhci_plat_probe()
263 		ret = usb_phy_init(hcd->usb_phy);  in xhci_plat_probe()
268 	hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);  in xhci_plat_probe()
270 	if (priv && (priv->quirks & XHCI_SKIP_PHY_INIT))  in xhci_plat_probe()
271 		hcd->skip_phy_initialization = 1;  in xhci_plat_probe()
273 	if (priv && (priv->quirks & XHCI_SG_TRB_CACHE_SIZE_QUIRK))  in xhci_plat_probe()
274 		xhci->quirks |= XHCI_SG_TRB_CACHE_SIZE_QUIRK;  in xhci_plat_probe()
281 		xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,  in xhci_plat_probe()
282 						    dev_name(&pdev->dev), hcd);  in xhci_plat_probe()
283 		if (!xhci->shared_hcd) {  in xhci_plat_probe()
284 			ret = -ENOMEM;  in xhci_plat_probe()
288 		xhci->shared_hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev,  in xhci_plat_probe()
289 			    "usb-phy", 1);  in xhci_plat_probe()
290 		if (IS_ERR(xhci->shared_hcd->usb_phy)) {  in xhci_plat_probe()
291 			xhci->shared_hcd->usb_phy = NULL;  in xhci_plat_probe()
293 			ret = usb_phy_init(xhci->shared_hcd->usb_phy);  in xhci_plat_probe()
299 		xhci->shared_hcd->tpl_support = hcd->tpl_support;  in xhci_plat_probe()
303 	if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4)  in xhci_plat_probe()
304 		usb3_hcd->can_do_streams = 1;  in xhci_plat_probe()
306 	if (xhci->shared_hcd) {  in xhci_plat_probe()
307 		ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);  in xhci_plat_probe()
312 	device_enable_async_suspend(&pdev->dev);  in xhci_plat_probe()
313 	pm_runtime_put_noidle(&pdev->dev);  in xhci_plat_probe()
319 	pm_runtime_forbid(&pdev->dev);  in xhci_plat_probe()
325 	usb_put_hcd(xhci->shared_hcd);  in xhci_plat_probe()
331 	usb_phy_shutdown(hcd->usb_phy);  in xhci_plat_probe()
334 	clk_disable_unprepare(xhci->clk);  in xhci_plat_probe()
337 	clk_disable_unprepare(xhci->reg_clk);  in xhci_plat_probe()
340 	reset_control_assert(xhci->reset);  in xhci_plat_probe()
346 	pm_runtime_put_noidle(&pdev->dev);  in xhci_plat_probe()
347 	pm_runtime_disable(&pdev->dev);  in xhci_plat_probe()
363 	 * 2. xhci_plat is child of a device from firmware (dwc3-plat)  in xhci_generic_plat_probe()
364 	 * 3. xhci_plat is grandchild of a pci device (dwc3-pci)  in xhci_generic_plat_probe()
366 	for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {  in xhci_generic_plat_probe()
367 		if (is_of_node(sysdev->fwnode) ||  in xhci_generic_plat_probe()
368 			is_acpi_device_node(sysdev->fwnode))  in xhci_generic_plat_probe()
375 		sysdev = &pdev->dev;  in xhci_generic_plat_probe()
377 	if (WARN_ON(!sysdev->dma_mask)) {  in xhci_generic_plat_probe()
384 	if (pdev->dev.of_node)  in xhci_generic_plat_probe()
385 		priv_match = of_device_get_match_data(&pdev->dev);  in xhci_generic_plat_probe()
387 		priv_match = dev_get_platdata(&pdev->dev);  in xhci_generic_plat_probe()
396 	struct clk *clk = xhci->clk;  in xhci_plat_remove()
397 	struct clk *reg_clk = xhci->reg_clk;  in xhci_plat_remove()
398 	struct usb_hcd *shared_hcd = xhci->shared_hcd;  in xhci_plat_remove()
400 	xhci->xhc_state |= XHCI_STATE_REMOVING;  in xhci_plat_remove()
401 	pm_runtime_get_sync(&dev->dev);  in xhci_plat_remove()
405 		xhci->shared_hcd = NULL;  in xhci_plat_remove()
408 	usb_phy_shutdown(hcd->usb_phy);  in xhci_plat_remove()
417 	reset_control_assert(xhci->reset);  in xhci_plat_remove()
420 	pm_runtime_disable(&dev->dev);  in xhci_plat_remove()
421 	pm_runtime_put_noidle(&dev->dev);  in xhci_plat_remove()
422 	pm_runtime_set_suspended(&dev->dev);  in xhci_plat_remove()
446 	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {  in xhci_plat_suspend()
447 		clk_disable_unprepare(xhci->clk);  in xhci_plat_suspend()
448 		clk_disable_unprepare(xhci->reg_clk);  in xhci_plat_suspend()
460 	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {  in xhci_plat_resume()
461 		clk_prepare_enable(xhci->clk);  in xhci_plat_resume()
462 		clk_prepare_enable(xhci->reg_clk);  in xhci_plat_resume()
512 	/* XHCI-compliant USB Controller */
524 		.name = "xhci-hcd",
530 MODULE_ALIAS("platform:xhci-hcd");