3  * xhci-plat.c - xHCI host controller driver platform Bus Glue.
8  * A lot of code borrowed from the Linux xHCI driver.
23 #include "xhci.h"
24 #include "xhci-plat.h"
25 #include "xhci-mvebu.h"
26 #include "xhci-rcar.h"
87 static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)  in xhci_plat_quirks()  argument
89 	struct xhci_plat_priv *priv = xhci_to_priv(xhci);  in xhci_plat_quirks()
96 	xhci->quirks |= XHCI_PLAT | priv->quirks;  in xhci_plat_quirks()
142 		.compatible = "generic-xhci",
144 		.compatible = "xhci-platform",
146 		.compatible = "marvell,armada-375-xhci",
149 		.compatible = "marvell,armada-380-xhci",
152 		.compatible = "marvell,armada3700-xhci",
155 		.compatible = "renesas,xhci-r8a7790",
158 		.compatible = "renesas,xhci-r8a7791",
161 		.compatible = "renesas,xhci-r8a7793",
164 		.compatible = "renesas,xhci-r8a7795",
167 		.compatible = "renesas,xhci-r8a7796",
170 		.compatible = "renesas,rcar-gen2-xhci",
173 		.compatible = "renesas,rcar-gen3-xhci",
176 		.compatible = "brcm,xhci-brcm-v2",
179 		.compatible = "brcm,bcm7445-xhci",
192 	struct xhci_hcd		*xhci;  in xhci_plat_probe()  local
264 	xhci = hcd_to_xhci(hcd);  in xhci_plat_probe()
270 	xhci->reg_clk = devm_clk_get_optional(&pdev->dev, "reg");  in xhci_plat_probe()
271 	if (IS_ERR(xhci->reg_clk)) {  in xhci_plat_probe()
272 		ret = PTR_ERR(xhci->reg_clk);  in xhci_plat_probe()
276 	ret = clk_prepare_enable(xhci->reg_clk);  in xhci_plat_probe()
280 	xhci->clk = devm_clk_get_optional(&pdev->dev, NULL);  in xhci_plat_probe()
281 	if (IS_ERR(xhci->clk)) {  in xhci_plat_probe()
282 		ret = PTR_ERR(xhci->clk);  in xhci_plat_probe()
286 	ret = clk_prepare_enable(xhci->clk);  in xhci_plat_probe()
303 	xhci->main_hcd = hcd;  in xhci_plat_probe()
304 	xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev,  in xhci_plat_probe()
306 	if (!xhci->shared_hcd) {  in xhci_plat_probe()
312 	xhci->imod_interval = 40000;  in xhci_plat_probe()
318 			xhci->quirks |= XHCI_HW_LPM_DISABLE;  in xhci_plat_probe()
321 			xhci->quirks |= XHCI_LPM_SUPPORT;  in xhci_plat_probe()
324 			xhci->quirks |= XHCI_BROKEN_PORT_PED;  in xhci_plat_probe()
326 		if (device_property_read_bool(tmpdev, "xhci-sg-trb-cache-size-quirk"))  in xhci_plat_probe()
327 			xhci->quirks |= XHCI_SG_TRB_CACHE_SIZE_QUIRK;  in xhci_plat_probe()
330 					 &xhci->imod_interval);  in xhci_plat_probe()
346 	xhci->shared_hcd->tpl_support = hcd->tpl_support;  in xhci_plat_probe()
354 	if ((xhci->quirks & XHCI_SKIP_PHY_INIT) || (priv && (priv->quirks & XHCI_SKIP_PHY_INIT)))  in xhci_plat_probe()
358 		xhci->quirks |= XHCI_SG_TRB_CACHE_SIZE_QUIRK;  in xhci_plat_probe()
364 	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)  in xhci_plat_probe()
365 		xhci->shared_hcd->can_do_streams = 1;  in xhci_plat_probe()
367 	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);  in xhci_plat_probe()
390 	usb_put_hcd(xhci->shared_hcd);  in xhci_plat_probe()
393 	clk_disable_unprepare(xhci->clk);  in xhci_plat_probe()
396 	clk_disable_unprepare(xhci->reg_clk);  in xhci_plat_probe()
411 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);  in xhci_plat_remove()  local
412 	struct clk *clk = xhci->clk;  in xhci_plat_remove()
413 	struct clk *reg_clk = xhci->reg_clk;  in xhci_plat_remove()
414 	struct usb_hcd *shared_hcd = xhci->shared_hcd;  in xhci_plat_remove()
417 	xhci->xhc_state |= XHCI_STATE_REMOVING;  in xhci_plat_remove()
420 	xhci->shared_hcd = NULL;  in xhci_plat_remove()
440 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);  in xhci_plat_suspend()  local
453 	ret = xhci_suspend(xhci, device_may_wakeup(dev));  in xhci_plat_suspend()
457 	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {  in xhci_plat_suspend()
458 		clk_disable_unprepare(xhci->clk);  in xhci_plat_suspend()
459 		clk_disable_unprepare(xhci->reg_clk);  in xhci_plat_suspend()
468 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);  in xhci_plat_resume()  local
471 	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {  in xhci_plat_resume()
472 		ret = clk_prepare_enable(xhci->clk);  in xhci_plat_resume()
476 		ret = clk_prepare_enable(xhci->reg_clk);  in xhci_plat_resume()
478 			clk_disable_unprepare(xhci->clk);  in xhci_plat_resume()
487 	ret = xhci_resume(xhci, 0);  in xhci_plat_resume()
498 	if (!device_may_wakeup(dev) && (xhci->quirks & XHCI_SUSPEND_RESUME_CLKS)) {  in xhci_plat_resume()
499 		clk_disable_unprepare(xhci->clk);  in xhci_plat_resume()
500 		clk_disable_unprepare(xhci->reg_clk);  in xhci_plat_resume()
509 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);  in xhci_plat_runtime_suspend()  local
516 	return xhci_suspend(xhci, true);  in xhci_plat_runtime_suspend()
522 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);  in xhci_plat_runtime_resume()  local
524 	return xhci_resume(xhci, 0);  in xhci_plat_runtime_resume()
537 	/* XHCI-compliant USB Controller */
549 		.name = "xhci-hcd",
555 MODULE_ALIAS("platform:xhci-hcd");
570 MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");