--- /dev/null
+/*
+ * (C) Copyright David Brownell 2000-2002
+ * Copyright (c) 2005 MontaVista Software
+ *
+ * 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.
+ *
+ * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
+ * by Hunter Wu.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+
+#include "ehci-fsl.h"
+
+/* FIXME: Power Managment is un-ported so temporarily disable it */
+#undef CONFIG_PM
+
+/* PCI-based HCs are common, but plenty of non-PCI HCs are used too */
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/**
+ * usb_hcd_fsl_probe - initialize FSL-based HCDs
+ * @drvier: Driver to be used for this HCD
+ * @pdev: USB Host Controller being probed
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller.
+ *
+ */
+int usb_hcd_fsl_probe(const struct hc_driver *driver,
+ struct platform_device *pdev)
+{
+ struct fsl_usb2_platform_data *pdata;
+ struct usb_hcd *hcd;
+ struct resource *res;
+ int irq;
+ int retval;
+ unsigned int temp;
+
+ pr_debug("initializing FSL-SOC USB Controller\n");
+
+ /* Need platform data for setup */
+ pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev,
+ "No platform data for %s.\n", pdev->dev.bus_id);
+ return -ENODEV;
+ }
+
+ /*
+ * This is a host mode driver, verify that we're supposed to be
+ * in host mode.
+ */
+ if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
+ (pdata->operating_mode == FSL_USB2_MPH_HOST))) {
+ dev_err(&pdev->dev,
+ "Non Host Mode configured for %s. Wrong driver linked.\n",
+ pdev->dev.bus_id);
+ return -ENODEV;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Found HC with no IRQ. Check %s setup!\n",
+ pdev->dev.bus_id);
+ return -ENODEV;
+ }
+ irq = res->start;
+
+ hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto err1;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Found HC with no register addr. Check %s setup!\n",
+ pdev->dev.bus_id);
+ retval = -ENODEV;
+ goto err2;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = res->end - res->start + 1;
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+ driver->description)) {
+ dev_dbg(&pdev->dev, "controller already in use\n");
+ retval = -EBUSY;
+ goto err2;
+ }
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+
+ if (hcd->regs == NULL) {
+ dev_dbg(&pdev->dev, "error mapping memory\n");
+ retval = -EFAULT;
+ goto err3;
+ }
+
+ /* Enable USB controller */
+ temp = in_be32(hcd->regs + 0x500);
+ out_be32(hcd->regs + 0x500, temp | 0x4);
+
+ /* Set to Host mode */
+ temp = in_le32(hcd->regs + 0x1a8);
+ out_le32(hcd->regs + 0x1a8, temp | 0x3);
+
+ retval = usb_add_hcd(hcd, irq, SA_SHIRQ);
+ if (retval != 0)
+ goto err4;
+ return retval;
+
+ err4:
+ iounmap(hcd->regs);
+ err3:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ err2:
+ usb_put_hcd(hcd);
+ err1:
+ dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
+ return retval;
+}
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_fsl_probe().
+ *
+ */
+void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+{
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
+ enum fsl_usb2_phy_modes phy_mode,
+ unsigned int port_offset)
+{
+ u32 portsc = readl(&ehci->regs->port_status[port_offset]);
+ portsc &= ~PORT_PTS_MSK;
+ switch (phy_mode) {
+ case FSL_USB2_PHY_ULPI:
+ portsc |= PORT_PTS_ULPI;
+ break;
+ case FSL_USB2_PHY_SERIAL:
+ portsc |= PORT_PTS_SERIAL;
+ break;
+ case FSL_USB2_PHY_UTMI_WIDE:
+ portsc |= PORT_PTS_PTW;
+ /* fall through */
+ case FSL_USB2_PHY_UTMI:
+ portsc |= PORT_PTS_UTMI;
+ break;
+ case FSL_USB2_PHY_NONE:
+ break;
+ }
+ writel(portsc, &ehci->regs->port_status[port_offset]);
+}
+
+static void mpc83xx_usb_setup(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ struct fsl_usb2_platform_data *pdata;
+ void __iomem *non_ehci = hcd->regs;
+
+ pdata =
+ (struct fsl_usb2_platform_data *)hcd->self.controller->
+ platform_data;
+ /* Enable PHY interface in the control reg. */
+ out_be32(non_ehci + FSL_SOC_USB_CTRL, 0x00000004);
+ out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
+
+ if (pdata->operating_mode == FSL_USB2_DR_HOST)
+ mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
+
+ if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
+ if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
+ mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
+ if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
+ mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
+ }
+
+ /* put controller in host mode. */
+ writel(0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
+ out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
+ out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
+ out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
+}
+
+/* called after powerup, by probe or system-pm "wakeup" */
+static int ehci_fsl_reinit(struct ehci_hcd *ehci)
+{
+ mpc83xx_usb_setup(ehci_to_hcd(ehci));
+ ehci_port_power(ehci, 0);
+
+ return 0;
+}
+
+/* called during probe() after chip reset completes */
+static int ehci_fsl_setup(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval;
+
+ /* EHCI registers start at offset 0x100 */
+ ehci->caps = hcd->regs + 0x100;
+ ehci->regs = hcd->regs + 0x100 +
+ HC_LENGTH(readl(&ehci->caps->hc_capbase));
+ dbg_hcs_params(ehci, "reset");
+ dbg_hcc_params(ehci, "reset");
+
+ /* cache this readonly data; minimize chip reads */
+ ehci->hcs_params = readl(&ehci->caps->hcs_params);
+
+ retval = ehci_halt(ehci);
+ if (retval)
+ return retval;
+
+ /* data structure init */
+ retval = ehci_init(hcd);
+ if (retval)
+ return retval;
+
+ ehci->is_tdi_rh_tt = 1;
+
+ ehci->sbrn = 0x20;
+
+ ehci_reset(ehci);
+
+ retval = ehci_fsl_reinit(ehci);
+ return retval;
+}
+
+static const struct hc_driver ehci_fsl_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,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ehci_fsl_setup,
+ .start = ehci_run,
+#ifdef CONFIG_PM
+ .suspend = ehci_bus_suspend,
+ .resume = ehci_bus_resume,
+#endif
+ .stop = ehci_stop,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+
+ /*
+ * 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,
+};
+
+static int ehci_fsl_drv_probe(struct platform_device *pdev)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
+}
+
+static int ehci_fsl_drv_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_hcd_fsl_remove(hcd, pdev);
+
+ return 0;
+}
+
+static struct platform_driver ehci_fsl_dr_driver = {
+ .probe = ehci_fsl_drv_probe,
+ .remove = ehci_fsl_drv_remove,
+ .driver = {
+ .name = "fsl-usb2-dr",
+ },
+};
+
+static struct platform_driver ehci_fsl_mph_driver = {
+ .probe = ehci_fsl_drv_probe,
+ .remove = ehci_fsl_drv_remove,
+ .driver = {
+ .name = "fsl-usb2-mph",
+ },
+};
+
+static int __init ehci_fsl_init(void)
+{
+ int retval;
+
+ pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
+ hcd_name,
+ sizeof(struct ehci_qh), sizeof(struct ehci_qtd),
+ sizeof(struct ehci_itd), sizeof(struct ehci_sitd));
+
+ retval = platform_driver_register(&ehci_fsl_dr_driver);
+ if (retval)
+ return retval;
+
+ return platform_driver_register(&ehci_fsl_mph_driver);
+}
+
+static void __exit ehci_fsl_cleanup(void)
+{
+ platform_driver_unregister(&ehci_fsl_mph_driver);
+ platform_driver_unregister(&ehci_fsl_dr_driver);
+}
+
+module_init(ehci_fsl_init);
+module_exit(ehci_fsl_cleanup);
projects / powerpc.git / commitdiff