zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/usb/host/ehci-msm.c b/ap/os/linux/linux-3.4.x/drivers/usb/host/ehci-msm.c
new file mode 100644
index 0000000..9803a55
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/usb/host/ehci-msm.c
@@ -0,0 +1,247 @@
+/* ehci-msm.c - HSUSB Host Controller Driver Implementation
+ *
+ * Copyright (c) 2008-2011, Code Aurora Forum. All rights reserved.
+ *
+ * Partly derived from ehci-fsl.c and ehci-hcd.c
+ * Copyright (c) 2000-2004 by David Brownell
+ * Copyright (c) 2005 MontaVista Software
+ *
+ * All source code in this file is licensed under the following license except
+ * where indicated.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * See the GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you can find it at http://www.fsf.org
+ */
+
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/pm_runtime.h>
+
+#include <linux/usb/otg.h>
+#include <linux/usb/msm_hsusb_hw.h>
+
+#define MSM_USB_BASE (hcd->regs)
+
+static struct usb_phy *phy;
+
+static int ehci_msm_reset(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval;
+
+ ehci->caps = USB_CAPLENGTH;
+ hcd->has_tt = 1;
+
+ retval = ehci_setup(hcd);
+ if (retval)
+ return retval;
+
+ /* bursts of unspecified length. */
+ writel(0, USB_AHBBURST);
+ /* Use the AHB transactor */
+ writel(0, USB_AHBMODE);
+ /* Disable streaming mode and select host mode */
+ writel(0x13, USB_USBMODE);
+
+ ehci_port_power(ehci, 1);
+ return 0;
+}
+
+static struct hc_driver msm_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "Qualcomm On-Chip EHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ehci_irq,
+ .flags = HCD_USB2 | HCD_MEMORY,
+
+ .reset = ehci_msm_reset,
+ .start = ehci_run,
+
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .endpoint_reset = ehci_endpoint_reset,
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ /*
+ * PM support
+ */
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+};
+
+static int ehci_msm_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res;
+ int ret;
+
+ dev_dbg(&pdev->dev, "ehci_msm proble\n");
+
+ hcd = usb_create_hcd(&msm_hc_driver, &pdev->dev, dev_name(&pdev->dev));
+ if (!hcd) {
+ dev_err(&pdev->dev, "Unable to create HCD\n");
+ return -ENOMEM;
+ }
+
+ hcd->irq = platform_get_irq(pdev, 0);
+ if (hcd->irq < 0) {
+ dev_err(&pdev->dev, "Unable to get IRQ resource\n");
+ ret = hcd->irq;
+ goto put_hcd;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Unable to get memory resource\n");
+ ret = -ENODEV;
+ goto put_hcd;
+ }
+
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto put_hcd;
+ }
+
+ /*
+ * OTG driver takes care of PHY initialization, clock management,
+ * powering up VBUS, mapping of registers address space and power
+ * management.
+ */
+ phy = usb_get_transceiver();
+ if (!phy) {
+ dev_err(&pdev->dev, "unable to find transceiver\n");
+ ret = -ENODEV;
+ goto unmap;
+ }
+
+ ret = otg_set_host(phy->otg, &hcd->self);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "unable to register with transceiver\n");
+ goto put_transceiver;
+ }
+
+ device_init_wakeup(&pdev->dev, 1);
+ /*
+ * OTG device parent of HCD takes care of putting
+ * hardware into low power mode.
+ */
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+
+put_transceiver:
+ usb_put_transceiver(phy);
+unmap:
+ iounmap(hcd->regs);
+put_hcd:
+ usb_put_hcd(hcd);
+
+ return ret;
+}
+
+static int __devexit ehci_msm_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ device_init_wakeup(&pdev->dev, 0);
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
+
+ otg_set_host(phy->otg, NULL);
+ usb_put_transceiver(phy);
+
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ehci_msm_pm_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ bool wakeup = device_may_wakeup(dev);
+
+ dev_dbg(dev, "ehci-msm PM suspend\n");
+
+ /*
+ * EHCI helper function has also the same check before manipulating
+ * port wakeup flags. We do check here the same condition before
+ * calling the same helper function to avoid bringing hardware
+ * from Low power mode when there is no need for adjusting port
+ * wakeup flags.
+ */
+ if (hcd->self.root_hub->do_remote_wakeup && !wakeup) {
+ pm_runtime_resume(dev);
+ ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
+ wakeup);
+ }
+
+ return 0;
+}
+
+static int ehci_msm_pm_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "ehci-msm PM resume\n");
+ ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
+
+ return 0;
+}
+#else
+#define ehci_msm_pm_suspend NULL
+#define ehci_msm_pm_resume NULL
+#endif
+
+static const struct dev_pm_ops ehci_msm_dev_pm_ops = {
+ .suspend = ehci_msm_pm_suspend,
+ .resume = ehci_msm_pm_resume,
+};
+
+static struct platform_driver ehci_msm_driver = {
+ .probe = ehci_msm_probe,
+ .remove = __devexit_p(ehci_msm_remove),
+ .driver = {
+ .name = "msm_hsusb_host",
+ .pm = &ehci_msm_dev_pm_ops,
+ },
+};