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|
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -378,6 +378,16 @@ config USB_CNS3XXX_OHCI
Enable support for the CNS3XXX SOC's on-chip OHCI controller.
It is needed for low-speed USB 1.0 device support.
+config USB_OHCI_HCD_PLATFORM
+ bool "Generic OHCI driver for a platform device"
+ depends on USB_OHCI_HCD && EXPERIMENTAL
+ default n
+ ---help---
+ Adds an OHCI host driver for a generic platform device, which
+ provieds a memory space and an irq.
+
+ If unsure, say N.
+
config USB_OHCI_BIG_ENDIAN_DESC
bool
depends on USB_OHCI_HCD
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1116,6 +1116,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_xls_driver
#endif
+#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
+#include "ohci-platform.c"
+#define PLATFORM_DRIVER ohci_platform_driver
+#endif
+
#if !defined(PCI_DRIVER) && \
!defined(PLATFORM_DRIVER) && \
!defined(OMAP1_PLATFORM_DRIVER) && \
--- /dev/null
+++ b/drivers/usb/host/ohci-platform.c
@@ -0,0 +1,194 @@
+/*
+ * Generic platform ohci driver
+ *
+ * Copyright 2007 Michael Buesch <m@bues.ch>
+ * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Derived from the OCHI-SSB driver
+ * Derived from the OHCI-PCI driver
+ * Copyright 1999 Roman Weissgaerber
+ * Copyright 2000-2002 David Brownell
+ * Copyright 1999 Linus Torvalds
+ * Copyright 1999 Gregory P. Smith
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+#include <linux/platform_device.h>
+#include <linux/usb/ohci_pdriver.h>
+
+static int ohci_platform_reset(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
+ struct usb_ohci_pdata *pdata = pdev->dev.platform_data;
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int err;
+
+ if (pdata->big_endian_desc)
+ ohci->flags |= OHCI_QUIRK_BE_DESC;
+ if (pdata->big_endian_mmio)
+ ohci->flags |= OHCI_QUIRK_BE_MMIO;
+ if (pdata->no_big_frame_no)
+ ohci->flags |= OHCI_QUIRK_FRAME_NO;
+
+ ohci_hcd_init(ohci);
+ err = ohci_init(ohci);
+
+ return err;
+}
+
+static int ohci_platform_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int err;
+
+ err = ohci_run(ohci);
+ if (err < 0) {
+ ohci_err(ohci, "can't start\n");
+ ohci_stop(hcd);
+ }
+
+ return err;
+}
+
+static const struct hc_driver ohci_platform_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "Generic Platform OHCI Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ .irq = ohci_irq,
+ .flags = HCD_MEMORY | HCD_USB11,
+
+ .reset = ohci_platform_reset,
+ .start = ohci_platform_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ .get_frame_number = ohci_get_frame,
+
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+
+ .start_port_reset = ohci_start_port_reset,
+};
+
+static int __devinit ohci_platform_probe(struct platform_device *dev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res_mem;
+ int irq;
+ int err = -ENOMEM;
+
+ BUG_ON(!dev->dev.platform_data);
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ irq = platform_get_irq(dev, 0);
+ if (irq < 0) {
+ pr_err("no irq provieded");
+ return irq;
+ }
+
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!res_mem) {
+ pr_err("no memory recourse provieded");
+ return -ENXIO;
+ }
+
+ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_err("controller already in use");
+ err = -EBUSY;
+ goto err_put_hcd;
+ }
+
+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs)
+ goto err_release_region;
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err)
+ goto err_iounmap;
+
+ platform_set_drvdata(dev, hcd);
+
+ return err;
+
+err_iounmap:
+ iounmap(hcd->regs);
+err_release_region:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_put_hcd:
+ usb_put_hcd(hcd);
+ return err;
+}
+
+static int __devexit ohci_platform_remove(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+ platform_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int ohci_platform_suspend(struct device *dev)
+{
+ return 0;
+}
+
+static int ohci_platform_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ ohci_finish_controller_resume(hcd);
+ return 0;
+}
+
+#else /* !CONFIG_PM */
+#define ohci_platform_suspend NULL
+#define ohci_platform_resume NULL
+#endif /* CONFIG_PM */
+
+static const struct platform_device_id ohci_platform_table[] = {
+ { "ohci-platform", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, ohci_platform_table);
+
+static const struct dev_pm_ops ohci_platform_pm_ops = {
+ .suspend = ohci_platform_suspend,
+ .resume = ohci_platform_resume,
+};
+
+static struct platform_driver ohci_platform_driver = {
+ .id_table = ohci_platform_table,
+ .probe = ohci_platform_probe,
+ .remove = __devexit_p(ohci_platform_remove),
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ohci-platform",
+ .pm = &ohci_platform_pm_ops,
+ }
+};
--- /dev/null
+++ b/include/linux/usb/ohci_pdriver.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.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.
+ */
+
+#ifndef __USB_CORE_OHCI_PDRIVER_H
+#define __USB_CORE_OHCI_PDRIVER_H
+
+/**
+ * struct usb_ohci_pdata - platform_data for generic ohci driver
+ *
+ * @big_endian_desc: BE descriptors
+ * @big_endian_mmio: BE registers
+ * @no_big_frame_no: no big endian frame_no shift
+ *
+ * These are general configuration options for the OHCI controller. All of
+ * these options are activating more or less workarounds for some hardware.
+ */
+struct usb_ohci_pdata {
+ unsigned big_endian_desc:1;
+ unsigned big_endian_mmio:1;
+ unsigned no_big_frame_no:1;
+};
+
+#endif /* __USB_CORE_OHCI_PDRIVER_H */
|
