add initial 2.6.28 support for brcm47xx target

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13909 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 311 insertions, 0 deletions

diff --git a/target/linux/brcm47xx/patches-2.6.28/270-ehci-ssb.patch b/target/linux/brcm47xx/patches-2.6.28/270-ehci-ssb.patch
new file mode 100644
index 0000000000..767ba23041
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.28/270-ehci-ssb.patch
@@ -0,0 +1,311 @@
+diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -96,6 +96,19 @@ config USB_EHCI_HCD_PPC_OF
+ 	  Enables support for the USB controller present on the PowerPC
+ 	  OpenFirmware platform bus.
+ 
++config USB_EHCI_HCD_SSB
++	bool "EHCI support for Broadcom SSB EHCI core"
++	depends on USB_EHCI_HCD && SSB && EXPERIMENTAL
++	default n
++	---help---
++	  Support for the Sonics Silicon Backplane (SSB) attached
++	  Broadcom USB EHCI core.
++
++	  This device is present in some embedded devices with
++	  Broadcom based SSB bus.
++
++	  If unsure, say N.
++
+ config USB_ISP116X_HCD
+ 	tristate "ISP116X HCD support"
+ 	depends on USB
+diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -1034,8 +1034,16 @@ MODULE_LICENSE ("GPL");
+ #define	PLATFORM_DRIVER		ixp4xx_ehci_driver
+ #endif
+ 
+-#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
+-    !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
++#ifdef CONFIG_USB_EHCI_HCD_SSB
++#include "ehci-ssb.c"
++#define SSB_EHCI_DRIVER         ssb_ehci_driver
++#endif
++
++#if !defined(PCI_DRIVER) && \
++    !defined(PLATFORM_DRIVER) && \
++    !defined(PS3_SYSTEM_BUS_DRIVER) && \
++    !defined(OF_PLATFORM_DRIVER) && \
++    !defined(SSB_EHCI_DRIVER)
+ #error "missing bus glue for ehci-hcd"
+ #endif
+ 
+diff --git a/drivers/usb/host/ehci-ssb.c b/drivers/usb/host/ehci-ssb.c
+--- /dev/null
++++ b/drivers/usb/host/ehci-ssb.c
+@@ -0,0 +1,201 @@
++/*
++ * Sonics Silicon Backplane
++ * Broadcom USB-core EHCI driver (SSB bus glue)
++ *
++ * Copyright 2007 Steven Brown <sbrown@cortland.com>
++ *
++ * Derived from the OHCI-SSB driver
++ * Copyright 2007 Michael Buesch <mb@bu3sch.de>
++ *
++ * Derived from the EHCI-PCI driver
++ * Copyright (c) 2000-2004 by David Brownell
++ *
++ * 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_ehci_device {
++	struct ehci_hcd ehci; /* _must_ be at the beginning. */
++
++	u32 enable_flags;
++};
++
++static inline
++struct ssb_ehci_device *hcd_to_ssb_ehci(struct usb_hcd *hcd)
++{
++	return (struct ssb_ehci_device *)(hcd->hcd_priv);
++}
++
++
++static int ssb_ehci_reset(struct usb_hcd *hcd)
++{
++	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
++	int err;
++
++	ehci->caps = hcd->regs;
++	ehci->regs = hcd->regs +
++		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
++
++	dbg_hcs_params(ehci, "reset");
++	dbg_hcc_params(ehci, "reset");
++
++	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
++
++	err = ehci_halt(ehci);
++
++	if (err)
++		return err;
++
++	err = ehci_init(hcd);
++
++	if (err)
++		return err;
++
++	ehci_port_power(ehci, 0);
++
++	return err;
++}
++
++static int ssb_ehci_start(struct usb_hcd *hcd)
++{
++	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
++	int err;
++
++	err = ehci_run(hcd);
++	if (err < 0) {
++		ehci_err(ehci, "can't start\n");
++		ehci_stop(hcd);
++	}
++
++	return err;
++}
++
++#ifdef CONFIG_PM
++static int ssb_ehci_hcd_suspend(struct usb_hcd *hcd, pm_message_t message)
++{
++	struct ssb_ehci_device *ehcidev = hcd_to_ssb_ehci(hcd);
++	struct ehci_hcd *ehci = &ehcidev->ehci;
++	unsigned long flags;
++
++	spin_lock_irqsave(&ehci->lock, flags);
++
++	ehci_writel(ehci, EHCI_INTR_MIE, &ehci->regs->intrdisable);
++	ehci_readl(ehci, &ehci->regs->intrdisable); /* commit write */
++
++	/* make sure snapshot being resumed re-enumerates everything */
++	if (message.event == PM_EVENT_PRETHAW)
++		ehci_usb_reset(ehci);
++
++	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
++
++	spin_unlock_irqrestore(&ehci->lock, flags);
++	return 0;
++}
++
++static int ssb_ehci_hcd_resume(struct usb_hcd *hcd)
++{
++	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
++	usb_hcd_resume_root_hub(hcd);
++	return 0;
++}
++#endif /* CONFIG_PM */
++
++static const struct hc_driver ssb_ehci_hc_driver = {
++	.description		= "ssb-usb-ehci",
++	.product_desc		= "SSB EHCI Controller",
++	.hcd_priv_size		= sizeof(struct ssb_ehci_device),
++
++	.irq			= ehci_irq,
++	.flags			= HCD_MEMORY | HCD_USB2,
++
++	.reset			= ssb_ehci_reset,
++	.start			= ssb_ehci_start,
++	.stop			= ehci_stop,
++	.shutdown		= ehci_shutdown,
++
++#ifdef CONFIG_PM
++	.suspend		= ssb_ehci_hcd_suspend,
++	.resume			= ssb_ehci_hcd_resume,
++#endif
++
++	.urb_enqueue		= ehci_urb_enqueue,
++	.urb_dequeue		= ehci_urb_dequeue,
++	.endpoint_disable	= ehci_endpoint_disable,
++
++	.get_frame_number	= ehci_get_frame,
++
++	.hub_status_data	= ehci_hub_status_data,
++	.hub_control		= ehci_hub_control,
++#ifdef CONFIG_PM
++	.bus_suspend		= ehci_bus_suspend,
++	.bus_resume		= ehci_bus_resume,
++#endif
++
++};
++
++static void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd)
++{
++
++	usb_remove_hcd(hcd);
++	iounmap(hcd->regs);
++	usb_put_hcd(hcd);
++}
++EXPORT_SYMBOL_GPL(ssb_ehci_detach);
++
++static int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **ehci_hcd)
++{
++	struct ssb_ehci_device *ehcidev;
++	struct usb_hcd *hcd;
++	int err = -ENOMEM;
++	u32 tmp, flags = 0;
++
++	hcd = usb_create_hcd(&ssb_ehci_hc_driver, dev->dev,
++		dev->dev->bus_id);
++	if (!hcd)
++		goto err_dev_disable;
++
++	ehcidev = hcd_to_ssb_ehci(hcd);
++	ehcidev->enable_flags = flags;
++	tmp = ssb_read32(dev, SSB_ADMATCH0);
++	hcd->rsrc_start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
++	hcd->rsrc_len = 0x100; /* ehci reg block size */
++	/*
++	 * start & size modified per sbutils.c
++	 */
++	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 | IRQF_DISABLED);
++	if (err)
++		goto err_iounmap;
++
++	*ehci_hcd = 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;
++}
++EXPORT_SYMBOL_GPL(ssb_ehci_attach);
++
++static const struct ssb_device_id ssb_ehci_table[] = {
++	SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
++	SSB_DEVTABLE_END
++};
++MODULE_DEVICE_TABLE(ssb, ssb_ehci_table);
+diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
+--- a/drivers/usb/host/ohci-ssb.c
++++ b/drivers/usb/host/ohci-ssb.c
+@@ -17,6 +17,8 @@
+  */
+ #include <linux/ssb/ssb.h>
+ 
++extern int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **hcd);
++extern void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd);
+ 
+ #define SSB_OHCI_TMSLOW_HOSTMODE	(1 << 29)
+ 
+@@ -24,6 +26,7 @@ struct ssb_ohci_device {
+ 	struct ohci_hcd ohci; /* _must_ be at the beginning. */
+ 
+ 	u32 enable_flags;
++	struct usb_hcd *ehci_hcd;
+ };
+ 
+ static inline
+@@ -92,13 +95,25 @@ static const struct hc_driver ssb_ohci_hc_driver = {
+ static void ssb_ohci_detach(struct ssb_device *dev)
+ {
+ 	struct usb_hcd *hcd = ssb_get_drvdata(dev);
++#ifdef CONFIG_USB_EHCI_HCD_SSB
++	struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
++#endif
+ 
+ 	usb_remove_hcd(hcd);
+ 	iounmap(hcd->regs);
+ 	usb_put_hcd(hcd);
++
++#ifdef CONFIG_USB_EHCI_HCD_SSB
++	/*
++	 * Also detach ehci function
++	 */
++	if (dev->id.coreid == SSB_DEV_USB20_HOST)
++		ssb_ehci_detach(dev, ohcidev->ehci_hcd);
++#endif
+ 	ssb_device_disable(dev, 0);
+ }
+ 
++
+ static int ssb_ohci_attach(struct ssb_device *dev)
+ {
+ 	struct ssb_ohci_device *ohcidev;
+@@ -184,6 +199,14 @@ static int ssb_ohci_attach(struct ssb_device *dev)
+ 
+ 	ssb_set_drvdata(dev, hcd);
+ 
++#ifdef CONFIG_USB_EHCI_HCD_SSB
++	/*
++	 * attach ehci function in this core
++	 */
++	if (dev->id.coreid == SSB_DEV_USB20_HOST)
++		err = ssb_ehci_attach(dev, &(ohcidev->ehci_hcd));
++#endif
++
+ 	return err;
+ 
+ err_iounmap: