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-rw-r--r--target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch291
1 files changed, 291 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch b/target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch
new file mode 100644
index 0000000..51b112a
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch
@@ -0,0 +1,291 @@
+From b39adeae5b06e40699c174ed78ca7c45b8d7976f Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 26 Nov 2011 21:20:54 +0100
+Subject: [PATCH 17/21] USB: OHCI: Add a generic platform device driver
+
+This adds a generic driver for platform devices. It works like the PCI
+driver and is based on it. This is for devices which do not have an own
+bus but their OHCI controller works like a PCI controller. It will be
+used for the Broadcom bcma and ssb USB OHCI controller.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ drivers/usb/host/Kconfig | 10 ++
+ drivers/usb/host/ohci-hcd.c | 21 ++++-
+ drivers/usb/host/ohci-platform.c | 197 ++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 227 insertions(+), 1 deletions(-)
+ create mode 100644 drivers/usb/host/ohci-platform.c
+
+--- 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 "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
+@@ -1114,6 +1114,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER ohci_hcd_ath79_driver
+ #endif
+
++#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
++#include "ohci-platform.c"
++#define PLATFORM_OHCI_DRIVER ohci_platform_driver
++#endif
++
+ #if !defined(PCI_DRIVER) && \
+ !defined(PLATFORM_DRIVER) && \
+ !defined(OMAP1_PLATFORM_DRIVER) && \
+@@ -1123,7 +1128,8 @@ MODULE_LICENSE ("GPL");
+ !defined(PS3_SYSTEM_BUS_DRIVER) && \
+ !defined(SM501_OHCI_DRIVER) && \
+ !defined(TMIO_OHCI_DRIVER) && \
+- !defined(SSB_OHCI_DRIVER)
++ !defined(SSB_OHCI_DRIVER) && \
++ !defined(PLATFORM_OHCI_DRIVER)
+ #error "missing bus glue for ohci-hcd"
+ #endif
+
+@@ -1207,9 +1213,19 @@ static int __init ohci_hcd_mod_init(void
+ goto error_tmio;
+ #endif
+
++#ifdef PLATFORM_OHCI_DRIVER
++ retval = platform_driver_register(&PLATFORM_OHCI_DRIVER);
++ if (retval)
++ goto error_platform;
++#endif
++
+ return retval;
+
+ /* Error path */
++#ifdef PLATFORM_OHCI_DRIVER
++ platform_driver_unregister(&PLATFORM_OHCI_DRIVER);
++ error_platform:
++#endif
+ #ifdef TMIO_OHCI_DRIVER
+ platform_driver_unregister(&TMIO_OHCI_DRIVER);
+ error_tmio:
+@@ -1263,6 +1279,9 @@ module_init(ohci_hcd_mod_init);
+
+ static void __exit ohci_hcd_mod_exit(void)
+ {
++#ifdef PLATFORM_OHCI_DRIVER
++ platform_driver_unregister(&PLATFORM_OHCI_DRIVER);
++#endif
+ #ifdef TMIO_OHCI_DRIVER
+ platform_driver_unregister(&TMIO_OHCI_DRIVER);
+ #endif
+--- /dev/null
++++ b/drivers/usb/host/ohci-platform.c
+@@ -0,0 +1,197 @@
++/*
++ * Generic platform ohci driver
++ *
++ * Copyright 2007 Michael Buesch <m@bues.ch>
++ * Copyright 2011 Hauke Mehrtens <hauke@hauke-m.de>
++ *
++ * 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>
++
++static int ohci_platform_reset(struct usb_hcd *hcd)
++{
++ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
++ int err;
++
++ 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 = "platform-usb-ohci",
++ .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 ohci_platform_attach(struct platform_device *dev)
++{
++ struct usb_hcd *hcd;
++ struct resource *res_irq, *res_mem;
++ int err = -ENOMEM;
++
++ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
++ dev_name(&dev->dev));
++ if (!hcd)
++ goto err_return;
++
++ res_irq = platform_get_resource(dev, IORESOURCE_IRQ, 0);
++ if (!res_irq) {
++ err = -ENXIO;
++ goto err_return;
++ }
++ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
++ if (!res_mem) {
++ err = -ENXIO;
++ goto err_return;
++ }
++ hcd->rsrc_start = res_mem->start;
++ hcd->rsrc_len = res_mem->end - res_mem->start + 1;
++
++ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
++ if (!hcd->regs)
++ goto err_put_hcd;
++ err = usb_add_hcd(hcd, res_irq->start, IRQF_SHARED);
++ if (err)
++ goto err_iounmap;
++
++ platform_set_drvdata(dev, hcd);
++
++ return err;
++
++err_iounmap:
++ iounmap(hcd->regs);
++err_put_hcd:
++ usb_put_hcd(hcd);
++err_return:
++ return err;
++}
++
++static int ohci_platform_probe(struct platform_device *dev)
++{
++ int err;
++
++ if (usb_disabled())
++ return -ENODEV;
++
++ /* We currently always attach BCMA_DEV_USB11_HOSTDEV
++ * as HOST OHCI. If we want to attach it as Client device,
++ * we must branch here and call into the (yet to
++ * be written) Client mode driver. Same for remove(). */
++
++ err = ohci_platform_attach(dev);
++
++ return err;
++}
++
++static int ohci_platform_remove(struct platform_device *dev)
++{
++ struct usb_hcd *hcd;
++
++ hcd = platform_get_drvdata(dev);
++ if (!hcd)
++ return -ENODEV;
++
++ usb_remove_hcd(hcd);
++ iounmap(hcd->regs);
++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
++ usb_put_hcd(hcd);
++
++ return 0;
++}
++
++static void ohci_platform_shutdown(struct platform_device *dev)
++{
++ struct usb_hcd *hcd;
++
++ hcd = platform_get_drvdata(dev);
++ if (!hcd)
++ return;
++
++ if (hcd->driver->shutdown)
++ hcd->driver->shutdown(hcd);
++}
++
++#ifdef CONFIG_PM
++
++static int ohci_platform_suspend(struct platform_device *dev,
++ pm_message_t state)
++{
++
++ return 0;
++}
++
++static int ohci_platform_resume(struct platform_device *dev)
++{
++ struct usb_hcd *hcd = platform_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 struct platform_driver ohci_platform_driver = {
++ .id_table = ohci_platform_table,
++ .probe = ohci_platform_probe,
++ .remove = ohci_platform_remove,
++ .shutdown = ohci_platform_shutdown,
++ .suspend = ohci_platform_suspend,
++ .resume = ohci_platform_resume,
++ .driver = {
++ .name = "ohci-platform",
++ }
++};