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openwrt-xburst/target/linux/brcm47xx/patches-3.2/186-USB-OHCI-remove-old-SSB-OHCI-driver.patch
hauke 6d7798dc01 brcm47xx: update usb driver for brcm47xx. 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30480 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-02-12 16:38:10 +00:00

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From 57857d7df6c22eaf11e3c67042d55a9546415059 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 26 Nov 2011 21:36:50 +0100
Subject: [PATCH 186/186] USB: OHCI: remove old SSB OHCI driver
This is now replaced by the new ssb USB driver, which also supports
devices with an EHCI controller.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
drivers/usb/host/Kconfig | 13 --
drivers/usb/host/ohci-hcd.c | 21 +----
drivers/usb/host/ohci-ssb.c | 260 -------------------------------------------
3 files changed, 1 insertions(+), 293 deletions(-)
delete mode 100644 drivers/usb/host/ohci-ssb.c
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -351,19 +351,6 @@ config USB_OHCI_HCD_PCI
Enables support for PCI-bus plug-in USB controller cards.
If unsure, say Y.
-config USB_OHCI_HCD_SSB
- bool "OHCI support for Broadcom SSB OHCI core"
- depends on USB_OHCI_HCD && (SSB = y || SSB = USB_OHCI_HCD) && EXPERIMENTAL
- default n
- ---help---
- Support for the Sonics Silicon Backplane (SSB) attached
- Broadcom USB OHCI core.
-
- This device is present in some embedded devices with
- Broadcom based SSB bus.
-
- If unsure, say N.
-
config USB_OHCI_SH
bool "OHCI support for SuperH USB controller"
depends on USB_OHCI_HCD && SUPERH
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1076,11 +1076,6 @@ MODULE_LICENSE ("GPL");
#define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver
#endif
-#ifdef CONFIG_USB_OHCI_HCD_SSB
-#include "ohci-ssb.c"
-#define SSB_OHCI_DRIVER ssb_ohci_driver
-#endif
-
#ifdef CONFIG_MFD_SM501
#include "ohci-sm501.c"
#define SM501_OHCI_DRIVER ohci_hcd_sm501_driver
@@ -1129,8 +1124,7 @@ MODULE_LICENSE ("GPL");
!defined(SA1111_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && \
!defined(SM501_OHCI_DRIVER) && \
- !defined(TMIO_OHCI_DRIVER) && \
- !defined(SSB_OHCI_DRIVER)
+ !defined(TMIO_OHCI_DRIVER)
#error "missing bus glue for ohci-hcd"
#endif
@@ -1196,12 +1190,6 @@ static int __init ohci_hcd_mod_init(void
goto error_pci;
#endif
-#ifdef SSB_OHCI_DRIVER
- retval = ssb_driver_register(&SSB_OHCI_DRIVER);
- if (retval)
- goto error_ssb;
-#endif
-
#ifdef SM501_OHCI_DRIVER
retval = platform_driver_register(&SM501_OHCI_DRIVER);
if (retval < 0)
@@ -1225,10 +1213,6 @@ static int __init ohci_hcd_mod_init(void
platform_driver_unregister(&SM501_OHCI_DRIVER);
error_sm501:
#endif
-#ifdef SSB_OHCI_DRIVER
- ssb_driver_unregister(&SSB_OHCI_DRIVER);
- error_ssb:
-#endif
#ifdef PCI_DRIVER
pci_unregister_driver(&PCI_DRIVER);
error_pci:
@@ -1276,9 +1260,6 @@ static void __exit ohci_hcd_mod_exit(voi
#ifdef SM501_OHCI_DRIVER
platform_driver_unregister(&SM501_OHCI_DRIVER);
#endif
-#ifdef SSB_OHCI_DRIVER
- ssb_driver_unregister(&SSB_OHCI_DRIVER);
-#endif
#ifdef PCI_DRIVER
pci_unregister_driver(&PCI_DRIVER);
#endif
--- a/drivers/usb/host/ohci-ssb.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * Sonics Silicon Backplane
- * Broadcom USB-core OHCI driver
- *
- * Copyright 2007 Michael Buesch <m@bues.ch>
- *
- * Derived from the OHCI-PCI driver
- * Copyright 1999 Roman Weissgaerber
- * Copyright 2000-2002 David Brownell
- * Copyright 1999 Linus Torvalds
- * Copyright 1999 Gregory P. Smith
- *
- * Derived from the USBcore related parts of Broadcom-SB
- * Copyright 2005 Broadcom Corporation
- *
- * Licensed under the GNU/GPL. See COPYING for details.
- */
-#include <linux/ssb/ssb.h>
-
-
-#define SSB_OHCI_TMSLOW_HOSTMODE (1 << 29)
-
-struct ssb_ohci_device {
- struct ohci_hcd ohci; /* _must_ be at the beginning. */
-
- u32 enable_flags;
-};
-
-static inline
-struct ssb_ohci_device *hcd_to_ssb_ohci(struct usb_hcd *hcd)
-{
- return (struct ssb_ohci_device *)(hcd->hcd_priv);
-}
-
-
-static int ssb_ohci_reset(struct usb_hcd *hcd)
-{
- struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
- struct ohci_hcd *ohci = &ohcidev->ohci;
- int err;
-
- ohci_hcd_init(ohci);
- err = ohci_init(ohci);
-
- return err;
-}
-
-static int ssb_ohci_start(struct usb_hcd *hcd)
-{
- struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
- struct ohci_hcd *ohci = &ohcidev->ohci;
- 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 ssb_ohci_hc_driver = {
- .description = "ssb-usb-ohci",
- .product_desc = "SSB OHCI Controller",
- .hcd_priv_size = sizeof(struct ssb_ohci_device),
-
- .irq = ohci_irq,
- .flags = HCD_MEMORY | HCD_USB11,
-
- .reset = ssb_ohci_reset,
- .start = ssb_ohci_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 void ssb_ohci_detach(struct ssb_device *dev)
-{
- struct usb_hcd *hcd = ssb_get_drvdata(dev);
-
- if (hcd->driver->shutdown)
- hcd->driver->shutdown(hcd);
- usb_remove_hcd(hcd);
- iounmap(hcd->regs);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
- usb_put_hcd(hcd);
- ssb_device_disable(dev, 0);
-}
-
-static int ssb_ohci_attach(struct ssb_device *dev)
-{
- struct ssb_ohci_device *ohcidev;
- struct usb_hcd *hcd;
- int err = -ENOMEM;
- u32 tmp, flags = 0;
-
- if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) ||
- dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32)))
- return -EOPNOTSUPP;
-
- if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
- /* Put the device into host-mode. */
- flags |= SSB_OHCI_TMSLOW_HOSTMODE;
- ssb_device_enable(dev, flags);
- } else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
- /*
- * USB 2.0 special considerations:
- *
- * In addition to the standard SSB reset sequence, the Host
- * Control Register must be programmed to bring the USB core
- * and various phy components out of reset.
- */
- ssb_device_enable(dev, 0);
- ssb_write32(dev, 0x200, 0x7ff);
-
- /* Change Flush control reg */
- tmp = ssb_read32(dev, 0x400);
- tmp &= ~8;
- ssb_write32(dev, 0x400, tmp);
- tmp = ssb_read32(dev, 0x400);
-
- /* Change Shim control reg */
- tmp = ssb_read32(dev, 0x304);
- tmp &= ~0x100;
- ssb_write32(dev, 0x304, tmp);
- tmp = ssb_read32(dev, 0x304);
-
- udelay(1);
-
- /* Work around for 5354 failures */
- if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
- /* Change syn01 reg */
- tmp = 0x00fe00fe;
- ssb_write32(dev, 0x894, tmp);
-
- /* Change syn03 reg */
- tmp = ssb_read32(dev, 0x89c);
- tmp |= 0x1;
- ssb_write32(dev, 0x89c, tmp);
- }
- } else
- ssb_device_enable(dev, 0);
-
- hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev,
- dev_name(dev->dev));
- if (!hcd)
- goto err_dev_disable;
- ohcidev = hcd_to_ssb_ohci(hcd);
- ohcidev->enable_flags = flags;
-
- tmp = ssb_read32(dev, SSB_ADMATCH0);
- hcd->rsrc_start = ssb_admatch_base(tmp);
- hcd->rsrc_len = ssb_admatch_size(tmp);
- hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
- if (!hcd->regs)
- goto err_put_hcd;
- err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
- if (err)
- goto err_iounmap;
-
- ssb_set_drvdata(dev, hcd);
-
- return err;
-
-err_iounmap:
- iounmap(hcd->regs);
-err_put_hcd:
- usb_put_hcd(hcd);
-err_dev_disable:
- ssb_device_disable(dev, flags);
- return err;
-}
-
-static int ssb_ohci_probe(struct ssb_device *dev,
- const struct ssb_device_id *id)
-{
- int err;
- u16 chipid_top;
-
- /* USBcores are only connected on embedded devices. */
- chipid_top = (dev->bus->chip_id & 0xFF00);
- if (chipid_top != 0x4700 && chipid_top != 0x5300)
- return -ENODEV;
-
- /* TODO: Probably need checks here; is the core connected? */
-
- if (usb_disabled())
- return -ENODEV;
-
- /* We currently always attach SSB_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 = ssb_ohci_attach(dev);
-
- return err;
-}
-
-static void ssb_ohci_remove(struct ssb_device *dev)
-{
- ssb_ohci_detach(dev);
-}
-
-#ifdef CONFIG_PM
-
-static int ssb_ohci_suspend(struct ssb_device *dev, pm_message_t state)
-{
- ssb_device_disable(dev, 0);
-
- return 0;
-}
-
-static int ssb_ohci_resume(struct ssb_device *dev)
-{
- struct usb_hcd *hcd = ssb_get_drvdata(dev);
- struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
-
- ssb_device_enable(dev, ohcidev->enable_flags);
-
- ohci_finish_controller_resume(hcd);
- return 0;
-}
-
-#else /* !CONFIG_PM */
-#define ssb_ohci_suspend NULL
-#define ssb_ohci_resume NULL
-#endif /* CONFIG_PM */
-
-static const struct ssb_device_id ssb_ohci_table[] = {
- SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
- SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
- SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
- SSB_DEVTABLE_END
-};
-MODULE_DEVICE_TABLE(ssb, ssb_ohci_table);
-
-static struct ssb_driver ssb_ohci_driver = {
- .name = KBUILD_MODNAME,
- .id_table = ssb_ohci_table,
- .probe = ssb_ohci_probe,
- .remove = ssb_ohci_remove,
- .suspend = ssb_ohci_suspend,
- .resume = ssb_ohci_resume,
-};
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