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authorFlorian Fainelli <florian@openwrt.org>2012-12-05 14:18:05 +0000
committerFlorian Fainelli <florian@openwrt.org>2012-12-05 14:18:05 +0000
commit512baafc6b88c6e30bab7979c87c6931714a1c43 (patch)
tree098014351826028fa21b39c09530d89afbeaafab /target/linux/generic/patches-3.3/081-USB-OHCI-Add-a-generic-platform-device-driver.patch
parent838d6e3b8d73a8cd0b645abeeff846cd1eea7501 (diff)
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kernel/3.3: move OHCI and EHCI platform drivers to generic
These patches are not specific to bcm47xx and will be used on other platforms as well. Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 34501
Diffstat (limited to 'target/linux/generic/patches-3.3/081-USB-OHCI-Add-a-generic-platform-device-driver.patch')
-rw-r--r--target/linux/generic/patches-3.3/081-USB-OHCI-Add-a-generic-platform-device-driver.patch271
1 files changed, 271 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.3/081-USB-OHCI-Add-a-generic-platform-device-driver.patch b/target/linux/generic/patches-3.3/081-USB-OHCI-Add-a-generic-platform-device-driver.patch
new file mode 100644
index 0000000..8ea102f
--- /dev/null
+++ b/target/linux/generic/patches-3.3/081-USB-OHCI-Add-a-generic-platform-device-driver.patch
@@ -0,0 +1,271 @@
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -393,6 +393,16 @@ 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
+@@ -1121,6 +1121,11 @@ 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 */