zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/usb/host/ehci-mxc.c b/ap/os/linux/linux-3.4.x/drivers/usb/host/ehci-mxc.c
new file mode 100644
index 0000000..77477ca
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/usb/host/ehci-mxc.c
@@ -0,0 +1,344 @@
+/*
+ * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * 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, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+#include <linux/slab.h>
+
+#include <mach/hardware.h>
+#include <mach/mxc_ehci.h>
+
+#include <asm/mach-types.h>
+
+#define ULPI_VIEWPORT_OFFSET 0x170
+
+struct ehci_mxc_priv {
+ struct clk *usbclk, *ahbclk, *phy1clk;
+ struct usb_hcd *hcd;
+};
+
+/* called during probe() after chip reset completes */
+static int ehci_mxc_setup(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval;
+
+ dbg_hcs_params(ehci, "reset");
+ dbg_hcc_params(ehci, "reset");
+
+ /* cache this readonly data; minimize chip reads */
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+ hcd->has_tt = 1;
+
+ retval = ehci_halt(ehci);
+ if (retval)
+ return retval;
+
+ /* data structure init */
+ retval = ehci_init(hcd);
+ if (retval)
+ return retval;
+
+ ehci->sbrn = 0x20;
+
+ ehci_reset(ehci);
+
+ ehci_port_power(ehci, 0);
+ return 0;
+}
+
+static const struct hc_driver ehci_mxc_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "Freescale On-Chip EHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ehci_irq,
+ .flags = HCD_USB2 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ehci_mxc_setup,
+ .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,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static int ehci_mxc_drv_probe(struct platform_device *pdev)
+{
+ struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
+ struct usb_hcd *hcd;
+ struct resource *res;
+ int irq, ret;
+ unsigned int flags;
+ struct ehci_mxc_priv *priv;
+ struct device *dev = &pdev->dev;
+ struct ehci_hcd *ehci;
+
+ dev_info(&pdev->dev, "initializing i.MX USB Controller\n");
+
+ if (!pdata) {
+ dev_err(dev, "No platform data given, bailing out.\n");
+ return -EINVAL;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+
+ hcd = usb_create_hcd(&ehci_mxc_hc_driver, dev, dev_name(dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto err_alloc;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "Found HC with no register addr. Check setup!\n");
+ ret = -ENODEV;
+ goto err_get_resource;
+ }
+
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ dev_dbg(dev, "controller already in use\n");
+ ret = -EBUSY;
+ goto err_request_mem;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ dev_err(dev, "error mapping memory\n");
+ ret = -EFAULT;
+ goto err_ioremap;
+ }
+
+ /* enable clocks */
+ priv->usbclk = clk_get(dev, "usb");
+ if (IS_ERR(priv->usbclk)) {
+ ret = PTR_ERR(priv->usbclk);
+ goto err_clk;
+ }
+ clk_enable(priv->usbclk);
+
+ if (!cpu_is_mx35() && !cpu_is_mx25()) {
+ priv->ahbclk = clk_get(dev, "usb_ahb");
+ if (IS_ERR(priv->ahbclk)) {
+ ret = PTR_ERR(priv->ahbclk);
+ goto err_clk_ahb;
+ }
+ clk_enable(priv->ahbclk);
+ }
+
+ /* "dr" device has its own clock on i.MX51 */
+ if (cpu_is_mx51() && (pdev->id == 0)) {
+ priv->phy1clk = clk_get(dev, "usb_phy1");
+ if (IS_ERR(priv->phy1clk)) {
+ ret = PTR_ERR(priv->phy1clk);
+ goto err_clk_phy;
+ }
+ clk_enable(priv->phy1clk);
+ }
+
+
+ /* call platform specific init function */
+ if (pdata->init) {
+ ret = pdata->init(pdev);
+ if (ret) {
+ dev_err(dev, "platform init failed\n");
+ goto err_init;
+ }
+ /* platforms need some time to settle changed IO settings */
+ mdelay(10);
+ }
+
+ ehci = hcd_to_ehci(hcd);
+
+ /* EHCI registers start at offset 0x100 */
+ ehci->caps = hcd->regs + 0x100;
+ ehci->regs = hcd->regs + 0x100 +
+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+
+ /* set up the PORTSCx register */
+ ehci_writel(ehci, pdata->portsc, &ehci->regs->port_status[0]);
+
+ /* is this really needed? */
+ msleep(10);
+
+ /* Initialize the transceiver */
+ if (pdata->otg) {
+ pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET;
+ ret = usb_phy_init(pdata->otg);
+ if (ret) {
+ dev_err(dev, "unable to init transceiver, probably missing\n");
+ ret = -ENODEV;
+ goto err_add;
+ }
+ ret = otg_set_vbus(pdata->otg->otg, 1);
+ if (ret) {
+ dev_err(dev, "unable to enable vbus on transceiver\n");
+ goto err_add;
+ }
+ }
+
+ priv->hcd = hcd;
+ platform_set_drvdata(pdev, priv);
+
+ ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (ret)
+ goto err_add;
+
+ if (pdata->otg) {
+ /*
+ * efikamx and efikasb have some hardware bug which is
+ * preventing usb to work unless CHRGVBUS is set.
+ * It's in violation of USB specs
+ */
+ if (machine_is_mx51_efikamx() || machine_is_mx51_efikasb()) {
+ flags = usb_phy_io_read(pdata->otg,
+ ULPI_OTG_CTRL);
+ flags |= ULPI_OTG_CTRL_CHRGVBUS;
+ ret = usb_phy_io_write(pdata->otg, flags,
+ ULPI_OTG_CTRL);
+ if (ret) {
+ dev_err(dev, "unable to set CHRVBUS\n");
+ goto err_add;
+ }
+ }
+ }
+
+ return 0;
+
+err_add:
+ if (pdata && pdata->exit)
+ pdata->exit(pdev);
+err_init:
+ if (priv->phy1clk) {
+ clk_disable(priv->phy1clk);
+ clk_put(priv->phy1clk);
+ }
+err_clk_phy:
+ if (priv->ahbclk) {
+ clk_disable(priv->ahbclk);
+ clk_put(priv->ahbclk);
+ }
+err_clk_ahb:
+ clk_disable(priv->usbclk);
+ clk_put(priv->usbclk);
+err_clk:
+ iounmap(hcd->regs);
+err_ioremap:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_request_mem:
+err_get_resource:
+ kfree(priv);
+err_alloc:
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+static int __exit ehci_mxc_drv_remove(struct platform_device *pdev)
+{
+ struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
+ struct ehci_mxc_priv *priv = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = priv->hcd;
+
+ if (pdata && pdata->exit)
+ pdata->exit(pdev);
+
+ if (pdata && pdata->otg)
+ usb_phy_shutdown(pdata->otg);
+
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+ platform_set_drvdata(pdev, NULL);
+
+ clk_disable(priv->usbclk);
+ clk_put(priv->usbclk);
+ if (priv->ahbclk) {
+ clk_disable(priv->ahbclk);
+ clk_put(priv->ahbclk);
+ }
+ if (priv->phy1clk) {
+ clk_disable(priv->phy1clk);
+ clk_put(priv->phy1clk);
+ }
+
+ kfree(priv);
+
+ return 0;
+}
+
+static void ehci_mxc_drv_shutdown(struct platform_device *pdev)
+{
+ struct ehci_mxc_priv *priv = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = priv->hcd;
+
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+}
+
+MODULE_ALIAS("platform:mxc-ehci");
+
+static struct platform_driver ehci_mxc_driver = {
+ .probe = ehci_mxc_drv_probe,
+ .remove = __exit_p(ehci_mxc_drv_remove),
+ .shutdown = ehci_mxc_drv_shutdown,
+ .driver = {
+ .name = "mxc-ehci",
+ },
+};