diff options
Diffstat (limited to 'drivers/usb/host/xhci-plat.c')
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 163bafde709f..09f164f8cf8c 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * xhci-plat.c - xHCI host controller driver platform Bus Glue. * @@ -5,10 +6,6 @@ * Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> * * A lot of code borrowed from the Linux xHCI driver. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. */ #include <linux/clk.h> @@ -16,6 +13,7 @@ #include <linux/module.h> #include <linux/pci.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/usb/phy.h> #include <linux/slab.h> @@ -152,7 +150,7 @@ MODULE_DEVICE_TABLE(of, usb_xhci_of_match); static int xhci_plat_probe(struct platform_device *pdev) { - const struct of_device_id *match; + const struct xhci_plat_priv *priv_match; const struct hc_driver *driver; struct device *sysdev; struct xhci_hcd *xhci; @@ -178,14 +176,18 @@ static int xhci_plat_probe(struct platform_device *pdev) * 2. xhci_plat is child of a device from firmware (dwc3-plat) * 3. xhci_plat is grandchild of a pci device (dwc3-pci) */ - sysdev = &pdev->dev; - if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node) - sysdev = sysdev->parent; + for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) { + if (is_of_node(sysdev->fwnode) || + is_acpi_device_node(sysdev->fwnode)) + break; #ifdef CONFIG_PCI - else if (sysdev->parent && sysdev->parent->parent && - sysdev->parent->parent->bus == &pci_bus_type) - sysdev = sysdev->parent->parent; + else if (sysdev->bus == &pci_bus_type) + break; #endif + } + + if (!sysdev) + sysdev = &pdev->dev; /* Try to set 64-bit DMA first */ if (WARN_ON(!sysdev->dma_mask)) @@ -238,9 +240,8 @@ static int xhci_plat_probe(struct platform_device *pdev) } xhci = hcd_to_xhci(hcd); - match = of_match_node(usb_xhci_of_match, pdev->dev.of_node); - if (match) { - const struct xhci_plat_priv *priv_match = match->data; + priv_match = of_device_get_match_data(&pdev->dev); + if (priv_match) { struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); /* Just copy data for now */ @@ -259,6 +260,9 @@ static int xhci_plat_probe(struct platform_device *pdev) goto disable_clk; } + if (device_property_read_bool(sysdev, "usb2-lpm-disable")) + xhci->quirks |= XHCI_HW_LPM_DISABLE; + if (device_property_read_bool(sysdev, "usb3-lpm-capable")) xhci->quirks |= XHCI_LPM_SUPPORT; |