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
+/*
+ * Cadence USBSS DRD Driver - host side
+ *
+ * Copyright (C) 2018-2019 Cadence Design Systems.
+ * Copyright (C) 2017-2018 NXP
+ *
+ * Authors: Peter Chen <peter.chen@nxp.com>
+ *          Pawel Laszczak <pawell@cadence.com>
+ */
+#include <dm.h>
+#include <linux/compat.h>
+#include <usb.h>
+#include <usb/xhci.h>
+
+#include "core.h"
+#include "drd.h"
+
+static int __cdns3_host_init(struct cdns3 *cdns)
+{
+	struct xhci_hcor *hcor;
+	struct xhci_hccr *hccr;
+
+	cdns3_drd_switch_host(cdns, 1);
+
+	hccr = (struct xhci_hccr *)cdns->xhci_regs;
+	hcor = (struct xhci_hcor *)(cdns->xhci_regs +
+			HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
+
+	return xhci_register(cdns->dev, hccr, hcor);
+}
+
+static void cdns3_host_exit(struct cdns3 *cdns)
+{
+	xhci_deregister(cdns->dev);
+	cdns3_drd_switch_host(cdns, 0);
+}
+
+int cdns3_host_init(struct cdns3 *cdns)
+{
+	struct cdns3_role_driver *rdrv;
+
+	rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);
+	if (!rdrv)
+		return -ENOMEM;
+
+	rdrv->start	= __cdns3_host_init;
+	rdrv->stop	= cdns3_host_exit;
+	rdrv->state	= CDNS3_ROLE_STATE_INACTIVE;
+	rdrv->name	= "host";
+
+	cdns->roles[USB_ROLE_HOST] = rdrv;
+
+	return 0;
+}