diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.31/270-ehci-ssb.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.31/270-ehci-ssb.patch | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.31/270-ehci-ssb.patch b/target/linux/brcm47xx/patches-2.6.31/270-ehci-ssb.patch new file mode 100644 index 0000000000..5b205e0e7c --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.31/270-ehci-ssb.patch @@ -0,0 +1,314 @@ +--- + drivers/usb/host/Kconfig | 13 ++ + drivers/usb/host/ehci-hcd.c | 12 ++ + drivers/usb/host/ehci-ssb.c | 201 ++++++++++++++++++++++++++++++++++++++++++++ + drivers/usb/host/ohci-ssb.c | 23 +++++ + 4 files changed, 247 insertions(+), 2 deletions(-) + +--- a/drivers/usb/host/Kconfig ++++ b/drivers/usb/host/Kconfig +@@ -126,6 +126,19 @@ config USB_OXU210HP_HCD + To compile this driver as a module, choose M here: the + module will be called oxu210hp-hcd. + ++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 +--- a/drivers/usb/host/ehci-hcd.c ++++ b/drivers/usb/host/ehci-hcd.c +@@ -1117,8 +1117,16 @@ 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 + +--- /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_name(dev->dev)); ++ 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); +--- 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_h + 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; +@@ -165,6 +180,14 @@ static int ssb_ohci_attach(struct ssb_de + + 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: |