GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Marvell International Ltd.
+ *
+ * MVEBU USB HOST xHCI Controller
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <usb.h>
+#include <power/regulator.h>
+#include <asm/gpio.h>
+
+#include <usb/xhci.h>
+
+struct mvebu_xhci_platdata {
+	fdt_addr_t hcd_base;
+};
+
+/**
+ * Contains pointers to register base addresses
+ * for the usb controller.
+ */
+struct mvebu_xhci {
+	struct xhci_ctrl ctrl;	/* Needs to come first in this struct! */
+	struct usb_platdata usb_plat;
+	struct xhci_hccr *hcd;
+};
+
+/*
+ * Dummy implementation that can be overwritten by a board
+ * specific function
+ */
+__weak int board_xhci_enable(fdt_addr_t base)
+{
+	return 0;
+}
+
+static int xhci_usb_probe(struct udevice *dev)
+{
+	struct mvebu_xhci_platdata *plat = dev_get_platdata(dev);
+	struct mvebu_xhci *ctx = dev_get_priv(dev);
+	struct xhci_hcor *hcor;
+	int len, ret;
+	struct udevice *regulator;
+
+	ctx->hcd = (struct xhci_hccr *)plat->hcd_base;
+	len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase));
+	hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len);
+
+	ret = device_get_supply_regulator(dev, "vbus-supply", &regulator);
+	if (!ret) {
+		ret = regulator_set_enable(regulator, true);
+		if (ret) {
+			printf("Failed to turn ON the VBUS regulator\n");
+			return ret;
+		}
+	}
+
+	/* Enable USB xHCI (VBUS, reset etc) in board specific code */
+	board_xhci_enable(devfdt_get_addr_index(dev, 1));
+
+	return xhci_register(dev, ctx->hcd, hcor);
+}
+
+static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
+{
+	struct mvebu_xhci_platdata *plat = dev_get_platdata(dev);
+
+	/*
+	 * Get the base address for XHCI controller from the device node
+	 */
+	plat->hcd_base = devfdt_get_addr(dev);
+	if (plat->hcd_base == FDT_ADDR_T_NONE) {
+		debug("Can't get the XHCI register base address\n");
+		return -ENXIO;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id xhci_usb_ids[] = {
+	{ .compatible = "marvell,armada3700-xhci" },
+	{ .compatible = "marvell,armada-380-xhci" },
+	{ .compatible = "marvell,armada-8k-xhci" },
+	{ }
+};
+
+U_BOOT_DRIVER(usb_xhci) = {
+	.name	= "xhci_mvebu",
+	.id	= UCLASS_USB,
+	.of_match = xhci_usb_ids,
+	.ofdata_to_platdata = xhci_usb_ofdata_to_platdata,
+	.probe = xhci_usb_probe,
+	.remove = xhci_deregister,
+	.ops	= &xhci_usb_ops,
+	.platdata_auto_alloc_size = sizeof(struct mvebu_xhci_platdata),
+	.priv_auto_alloc_size = sizeof(struct mvebu_xhci),
+	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
+};