[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/usb/host/ehci-spear.c b/src/kernel/linux/v4.14/drivers/usb/host/ehci-spear.c
new file mode 100644
index 0000000..1f25c79
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/usb/host/ehci-spear.c
@@ -0,0 +1,191 @@
+/*
+* Driver for EHCI HCD on SPEAr SOC
+*
+* Copyright (C) 2010 ST Micro Electronics,
+* Deepak Sikri <deepak.sikri@st.com>
+*
+* Based on various ehci-*.c drivers
+*
+* This file is subject to the terms and conditions of the GNU General Public
+* License. See the file COPYING in the main directory of this archive for
+* more details.
+*/
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ehci.h"
+
+#define DRIVER_DESC "EHCI SPEAr driver"
+
+static const char hcd_name[] = "SPEAr-ehci";
+
+struct spear_ehci {
+ struct clk *clk;
+};
+
+#define to_spear_ehci(hcd) (struct spear_ehci *)(hcd_to_ehci(hcd)->priv)
+
+static struct hc_driver __read_mostly ehci_spear_hc_driver;
+
+#ifdef CONFIG_PM_SLEEP
+static int ehci_spear_drv_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ bool do_wakeup = device_may_wakeup(dev);
+
+ return ehci_suspend(hcd, do_wakeup);
+}
+
+static int ehci_spear_drv_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ ehci_resume(hcd, false);
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(ehci_spear_pm_ops, ehci_spear_drv_suspend,
+ ehci_spear_drv_resume);
+
+static int spear_ehci_hcd_drv_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd ;
+ struct spear_ehci *sehci;
+ struct resource *res;
+ struct clk *usbh_clk;
+ const struct hc_driver *driver = &ehci_spear_hc_driver;
+ int irq, retval;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ retval = irq;
+ goto fail;
+ }
+
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we have dma capability bindings this can go away.
+ */
+ retval = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ if (retval)
+ goto fail;
+
+ usbh_clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(usbh_clk)) {
+ dev_err(&pdev->dev, "Error getting interface clock\n");
+ retval = PTR_ERR(usbh_clk);
+ goto fail;
+ }
+
+ hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto fail;
+ }
+
+ 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 err_put_hcd;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ sehci = to_spear_ehci(hcd);
+ sehci->clk = usbh_clk;
+
+ /* registers start at offset 0x0 */
+ hcd_to_ehci(hcd)->caps = hcd->regs;
+
+ clk_prepare_enable(sehci->clk);
+ retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (retval)
+ goto err_stop_ehci;
+
+ device_wakeup_enable(hcd->self.controller);
+ return retval;
+
+err_stop_ehci:
+ clk_disable_unprepare(sehci->clk);
+err_put_hcd:
+ usb_put_hcd(hcd);
+fail:
+ dev_err(&pdev->dev, "init fail, %d\n", retval);
+
+ return retval ;
+}
+
+static int spear_ehci_hcd_drv_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct spear_ehci *sehci = to_spear_ehci(hcd);
+
+ usb_remove_hcd(hcd);
+
+ if (sehci->clk)
+ clk_disable_unprepare(sehci->clk);
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+static const struct of_device_id spear_ehci_id_table[] = {
+ { .compatible = "st,spear600-ehci", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, spear_ehci_id_table);
+
+static struct platform_driver spear_ehci_hcd_driver = {
+ .probe = spear_ehci_hcd_drv_probe,
+ .remove = spear_ehci_hcd_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "spear-ehci",
+ .bus = &platform_bus_type,
+ .pm = &ehci_spear_pm_ops,
+ .of_match_table = spear_ehci_id_table,
+ }
+};
+
+static const struct ehci_driver_overrides spear_overrides __initconst = {
+ .extra_priv_size = sizeof(struct spear_ehci),
+};
+
+static int __init ehci_spear_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ehci_init_driver(&ehci_spear_hc_driver, &spear_overrides);
+ return platform_driver_register(&spear_ehci_hcd_driver);
+}
+module_init(ehci_spear_init);
+
+static void __exit ehci_spear_cleanup(void)
+{
+ platform_driver_unregister(&spear_ehci_hcd_driver);
+}
+module_exit(ehci_spear_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_ALIAS("platform:spear-ehci");
+MODULE_AUTHOR("Deepak Sikri");
+MODULE_LICENSE("GPL");