diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.38/022-USB-Add-ehci-ssb-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-2.6.38/022-USB-Add-ehci-ssb-driver.patch | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.38/022-USB-Add-ehci-ssb-driver.patch b/target/linux/brcm47xx/patches-2.6.38/022-USB-Add-ehci-ssb-driver.patch new file mode 100644 index 0000000000..496b6c078f --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.38/022-USB-Add-ehci-ssb-driver.patch @@ -0,0 +1,345 @@ +From ad224c0d5fa0fc05f8aaef3c19fc9b4eb275a5d2 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sun, 18 Jul 2010 21:29:40 +0200 +Subject: [PATCH 2/2] USB: Add ehci ssb driver + +Support for the Sonics Silicon Backplane (SSB) attached Broadcom USB EHCI core. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/usb/host/Kconfig | 13 ++ + drivers/usb/host/ehci-hcd.c | 22 ++++- + drivers/usb/host/ehci-ssb.c | 255 +++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 288 insertions(+), 2 deletions(-) + create mode 100644 drivers/usb/host/ehci-ssb.c + +--- a/drivers/usb/host/Kconfig ++++ b/drivers/usb/host/Kconfig +@@ -189,6 +189,19 @@ 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 = y || SSB = USB_EHCI_HCD) && 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 +@@ -1254,9 +1254,14 @@ MODULE_LICENSE ("GPL"); + #define PLATFORM_DRIVER ehci_msm_driver + #endif + ++#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(XILINX_OF_PLATFORM_DRIVER) ++ !defined(XILINX_OF_PLATFORM_DRIVER) && !defined(SSB_EHCI_DRIVER) + #error "missing bus glue for ehci-hcd" + #endif + +@@ -1316,10 +1321,20 @@ static int __init ehci_hcd_init(void) + if (retval < 0) + goto clean4; + #endif ++ ++#ifdef SSB_EHCI_DRIVER ++ retval = ssb_driver_register(&SSB_EHCI_DRIVER); ++ if (retval < 0) ++ goto clean5; ++#endif + return retval; + ++#ifdef SSB_EHCI_DRIVER ++ /* ssb_driver_unregister(&SSB_EHCI_DRIVER); */ ++clean5: ++#endif + #ifdef XILINX_OF_PLATFORM_DRIVER +- /* of_unregister_platform_driver(&XILINX_OF_PLATFORM_DRIVER); */ ++ of_unregister_platform_driver(&XILINX_OF_PLATFORM_DRIVER); + clean4: + #endif + #ifdef OF_PLATFORM_DRIVER +@@ -1350,6 +1365,9 @@ module_init(ehci_hcd_init); + + static void __exit ehci_hcd_cleanup(void) + { ++#ifdef SSB_EHCI_DRIVER ++ ssb_driver_unregister(&SSB_EHCI_DRIVER); ++#endif + #ifdef XILINX_OF_PLATFORM_DRIVER + of_unregister_platform_driver(&XILINX_OF_PLATFORM_DRIVER); + #endif +--- /dev/null ++++ b/drivers/usb/host/ehci-ssb.c +@@ -0,0 +1,255 @@ ++/* ++ * Sonics Silicon Backplane ++ * Broadcom USB-core EHCI driver (SSB bus glue) ++ * ++ * Copyright 2007 Steven Brown <sbrown@cortland.com> ++ * Copyright 2010 Hauke Mehrtens <hauke@hauke-m.de> ++ * ++ * 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> ++ ++ ++struct ssb_ehci_device { ++ struct ehci_hcd ehci; /* _must_ be at the beginning. */ ++}; ++ ++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_reset(ehci); ++ ++ return err; ++} ++ ++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 = ehci_run, ++ .stop = ehci_stop, ++ .shutdown = ehci_shutdown, ++ ++ .urb_enqueue = ehci_urb_enqueue, ++ .urb_dequeue = ehci_urb_dequeue, ++ .endpoint_disable = ehci_endpoint_disable, ++ .endpoint_reset = ehci_endpoint_reset, ++ ++ .get_frame_number = ehci_get_frame, ++ ++ .hub_status_data = ehci_hub_status_data, ++ .hub_control = ehci_hub_control, ++#if defined(CONFIG_PM) ++ .bus_suspend = ehci_bus_suspend, ++ .bus_resume = ehci_bus_resume, ++#endif ++ .relinquish_port = ehci_relinquish_port, ++ .port_handed_over = ehci_port_handed_over, ++ ++ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, ++}; ++ ++static void ssb_ehci_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_ehci_attach(struct ssb_device *dev) ++{ ++ struct ssb_ehci_device *ehcidev; ++ struct usb_hcd *hcd; ++ int err = -ENOMEM; ++ u32 tmp; ++ ++ if (dma_set_mask(dev->dma_dev, DMA_BIT_MASK(32)) || ++ dma_set_coherent_mask(dev->dma_dev, DMA_BIT_MASK(32))) ++ return -EOPNOTSUPP; ++ ++ /* ++ * 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); ++ } ++ ++ 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); ++ 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_DISABLED | 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, 0); ++ return err; ++} ++ ++static int ssb_ehci_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; ++ ++ err = ssb_ehci_attach(dev); ++ ++ return err; ++} ++ ++static void ssb_ehci_remove(struct ssb_device *dev) ++{ ++ ssb_ehci_detach(dev); ++} ++ ++#ifdef CONFIG_PM ++ ++static int ssb_ehci_suspend(struct ssb_device *dev, pm_message_t state) ++{ ++ ssb_device_disable(dev, 0); ++ ++ return 0; ++} ++ ++static int ssb_ehci_resume(struct ssb_device *dev) ++{ ++ struct usb_hcd *hcd = ssb_get_drvdata(dev); ++ struct ssb_ehci_device *ehcidev = hcd_to_ssb_ehci(hcd); ++ ++ ssb_device_enable(dev, 0); ++ ++ ehci_finish_controller_resume(hcd); ++ return 0; ++} ++ ++#else /* !CONFIG_PM */ ++#define ssb_ehci_suspend NULL ++#define ssb_ehci_resume NULL ++#endif /* CONFIG_PM */ ++ ++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); ++ ++static struct ssb_driver ssb_ehci_driver = { ++ .name = KBUILD_MODNAME, ++ .id_table = ssb_ehci_table, ++ .probe = ssb_ehci_probe, ++ .remove = ssb_ehci_remove, ++ .suspend = ssb_ehci_suspend, ++ .resume = ssb_ehci_resume, ++}; |