[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/usb/host/ehci-w90x900.c b/src/kernel/linux/v4.19/drivers/usb/host/ehci-w90x900.c
new file mode 100644
index 0000000..6d77ace
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/usb/host/ehci-w90x900.c
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/driver/usb/host/ehci-w90x900.c
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ehci.h"
+
+/* enable phy0 and phy1 for w90p910 */
+#define ENPHY (0x01<<8)
+#define PHY0_CTR (0xA4)
+#define PHY1_CTR (0xA8)
+
+#define DRIVER_DESC "EHCI w90x900 driver"
+
+static const char hcd_name[] = "ehci-w90x900 ";
+
+static struct hc_driver __read_mostly ehci_w90x900_hc_driver;
+
+static int ehci_w90x900_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci;
+ struct resource *res;
+ int retval = 0, irq;
+ unsigned long val;
+
+ hcd = usb_create_hcd(&ehci_w90x900_hc_driver,
+ &pdev->dev, "w90x900 EHCI");
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto err1;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
+ retval = PTR_ERR(hcd->regs);
+ goto err2;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ ehci = hcd_to_ehci(hcd);
+ ehci->caps = hcd->regs;
+ ehci->regs = hcd->regs +
+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+
+ /* enable PHY 0,1,the regs only apply to w90p910
+ * 0xA4,0xA8 were offsets of PHY0 and PHY1 controller of
+ * w90p910 IC relative to ehci->regs.
+ */
+ val = __raw_readl(ehci->regs+PHY0_CTR);
+ val |= ENPHY;
+ __raw_writel(val, ehci->regs+PHY0_CTR);
+
+ val = __raw_readl(ehci->regs+PHY1_CTR);
+ val |= ENPHY;
+ __raw_writel(val, ehci->regs+PHY1_CTR);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ retval = irq;
+ goto err2;
+ }
+
+ retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (retval != 0)
+ goto err2;
+
+ device_wakeup_enable(hcd->self.controller);
+ return retval;
+err2:
+ usb_put_hcd(hcd);
+err1:
+ return retval;
+}
+
+static int ehci_w90x900_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_remove_hcd(hcd);
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+static struct platform_driver ehci_hcd_w90x900_driver = {
+ .probe = ehci_w90x900_probe,
+ .remove = ehci_w90x900_remove,
+ .driver = {
+ .name = "w90x900-ehci",
+ },
+};
+
+static int __init ehci_w90X900_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ehci_init_driver(&ehci_w90x900_hc_driver, NULL);
+ return platform_driver_register(&ehci_hcd_w90x900_driver);
+}
+module_init(ehci_w90X900_init);
+
+static void __exit ehci_w90X900_cleanup(void)
+{
+ platform_driver_unregister(&ehci_hcd_w90x900_driver);
+}
+module_exit(ehci_w90X900_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
+MODULE_ALIAS("platform:w90p910-ehci");
+MODULE_LICENSE("GPL v2");