diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.23/230-ohci-ssb.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.23/230-ohci-ssb.patch | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.23/230-ohci-ssb.patch b/target/linux/brcm47xx/patches-2.6.23/230-ohci-ssb.patch new file mode 100644 index 0000000..1db627f --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.23/230-ohci-ssb.patch @@ -0,0 +1,347 @@ +From: Michael Buesch <mb@bu3sch.de> +Date: Wed, 10 Oct 2007 06:47:17 +0000 (-0700) +Subject: USB: ohci SSB bus glue +X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fralf%2Flinux.git;a=commitdiff_plain;h=c604e851486eabcbeb73e984279d436ce121fd5d + +USB: ohci SSB bus glue + +This adds SSB bus glue for the USB OHCI HCD. + +Signed-off-by: Michael Buesch <mb@bu3sch.de> +Signed-off-by: John W. Linville <linville@tuxdriver.com> +Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> +Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> +--- + +diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig +index 565d6ef..c978d62 100644 +--- a/drivers/usb/host/Kconfig ++++ b/drivers/usb/host/Kconfig +@@ -154,6 +154,19 @@ 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 && 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_BIG_ENDIAN_DESC + bool + depends on USB_OHCI_HCD +diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c +index f7c6ced..240c7f5 100644 +--- a/drivers/usb/host/ohci-hcd.c ++++ b/drivers/usb/host/ohci-hcd.c +@@ -1033,11 +1033,17 @@ 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 ++ + #if !defined(PCI_DRIVER) && \ + !defined(PLATFORM_DRIVER) && \ + !defined(OF_PLATFORM_DRIVER) && \ + !defined(SA1111_DRIVER) && \ +- !defined(PS3_SYSTEM_BUS_DRIVER) ++ !defined(PS3_SYSTEM_BUS_DRIVER) && \ ++ !defined(SSB_OHCI_DRIVER) + #error "missing bus glue for ohci-hcd" + #endif + +@@ -1082,10 +1088,20 @@ 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 ++ + return retval; + + /* Error path */ ++#ifdef SSB_OHCI_DRIVER ++ error_ssb: ++#endif + #ifdef PCI_DRIVER ++ pci_unregister_driver(&PCI_DRIVER); + error_pci: + #endif + #ifdef SA1111_DRIVER +@@ -1110,6 +1126,9 @@ module_init(ohci_hcd_mod_init); + + static void __exit ohci_hcd_mod_exit(void) + { ++#ifdef SSB_OHCI_DRIVER ++ ssb_driver_unregister(&SSB_OHCI_DRIVER); ++#endif + #ifdef PCI_DRIVER + pci_unregister_driver(&PCI_DRIVER); + #endif +diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c +new file mode 100644 +index 0000000..bc3e785 +--- /dev/null ++++ b/drivers/usb/host/ohci-ssb.c +@@ -0,0 +1,247 @@ ++/* ++ * Sonics Silicon Backplane ++ * Broadcom USB-core OHCI driver ++ * ++ * Copyright 2007 Michael Buesch <mb@bu3sch.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 ++ * ++ * 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; ++} ++ ++#ifdef CONFIG_PM ++static int ssb_ohci_hcd_suspend(struct usb_hcd *hcd, pm_message_t message) ++{ ++ struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd); ++ struct ohci_hcd *ohci = &ohcidev->ohci; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&ohci->lock, flags); ++ ++ ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); ++ ohci_readl(ohci, &ohci->regs->intrdisable); /* commit write */ ++ ++ /* make sure snapshot being resumed re-enumerates everything */ ++ if (message.event == PM_EVENT_PRETHAW) ++ ohci_usb_reset(ohci); ++ ++ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); ++ ++ spin_unlock_irqrestore(&ohci->lock, flags); ++ return 0; ++} ++ ++static int ssb_ohci_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_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, ++ ++#ifdef CONFIG_PM ++ .suspend = ssb_ohci_hcd_suspend, ++ .resume = ssb_ohci_hcd_resume, ++#endif ++ ++ .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, ++ .hub_irq_enable = ohci_rhsc_enable, ++ .bus_suspend = ohci_bus_suspend, ++ .bus_resume = ohci_bus_resume, ++ ++ .start_port_reset = ohci_start_port_reset, ++}; ++ ++static void ssb_ohci_detach(struct ssb_device *dev) ++{ ++ struct usb_hcd *hcd = ssb_get_drvdata(dev); ++ ++ usb_remove_hcd(hcd); ++ iounmap(hcd->regs); ++ 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 (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) ++ flags |= SSB_OHCI_TMSLOW_HOSTMODE; ++ ++ ssb_device_enable(dev, flags); ++ ++ hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev, ++ dev->dev->bus_id); ++ 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); ++ ++ 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_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, ++}; + |