target/linux/brcm47xx/patches-2.6.32/270-ehci-ssb.patch

   1 ---
   2  drivers/usb/host/Kconfig    |   13 ++
   3  drivers/usb/host/ehci-hcd.c |   12 ++
   4  drivers/usb/host/ehci-ssb.c |  201 ++++++++++++++++++++++++++++++++++++++++++++
   5  drivers/usb/host/ohci-ssb.c |   23 +++++
   6  4 files changed, 247 insertions(+), 2 deletions(-)
   7
   8 --- a/drivers/usb/host/Kconfig
   9 +++ b/drivers/usb/host/Kconfig
  10 @@ -132,6 +132,19 @@ config USB_OXU210HP_HCD
  11           To compile this driver as a module, choose M here: the
  12           module will be called oxu210hp-hcd.
  13
  14 +config USB_EHCI_HCD_SSB
  15 +       bool "EHCI support for Broadcom SSB EHCI core"
  16 +       depends on USB_EHCI_HCD && SSB && EXPERIMENTAL
  17 +       default n
  18 +       ---help---
  19 +         Support for the Sonics Silicon Backplane (SSB) attached
  20 +         Broadcom USB EHCI core.
  21 +
  22 +         This device is present in some embedded devices with
  23 +         Broadcom based SSB bus.
  24 +
  25 +         If unsure, say N.
  26 +
  27  config USB_ISP116X_HCD
  28         tristate "ISP116X HCD support"
  29         depends on USB
  30 --- a/drivers/usb/host/ehci-hcd.c
  31 +++ b/drivers/usb/host/ehci-hcd.c
  32 @@ -1142,8 +1142,16 @@ MODULE_LICENSE ("GPL");
  33  #define        PLATFORM_DRIVER         ehci_atmel_driver
  34  #endif
  35
  36 -#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
  37 -    !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
  38 +#ifdef CONFIG_USB_EHCI_HCD_SSB
  39 +#include "ehci-ssb.c"
  40 +#define SSB_EHCI_DRIVER         ssb_ehci_driver
  41 +#endif
  42 +
  43 +#if !defined(PCI_DRIVER) && \
  44 +    !defined(PLATFORM_DRIVER) && \
  45 +    !defined(PS3_SYSTEM_BUS_DRIVER) && \
  46 +    !defined(OF_PLATFORM_DRIVER) && \
  47 +    !defined(SSB_EHCI_DRIVER)
  48  #error "missing bus glue for ehci-hcd"
  49  #endif
  50
  51 --- /dev/null
  52 +++ b/drivers/usb/host/ehci-ssb.c
  53 @@ -0,0 +1,158 @@
  54 +/*
  55 + * Sonics Silicon Backplane
  56 + * Broadcom USB-core EHCI driver (SSB bus glue)
  57 + *
  58 + * Copyright 2007 Steven Brown <sbrown@cortland.com>
  59 + *
  60 + * Derived from the OHCI-SSB driver
  61 + * Copyright 2007 Michael Buesch <mb@bu3sch.de>
  62 + *
  63 + * Derived from the EHCI-PCI driver
  64 + * Copyright (c) 2000-2004 by David Brownell
  65 + *
  66 + * Derived from the OHCI-PCI driver
  67 + * Copyright 1999 Roman Weissgaerber
  68 + * Copyright 2000-2002 David Brownell
  69 + * Copyright 1999 Linus Torvalds
  70 + * Copyright 1999 Gregory P. Smith
  71 + *
  72 + * Derived from the USBcore related parts of Broadcom-SB
  73 + * Copyright 2005 Broadcom Corporation
  74 + *
  75 + * Licensed under the GNU/GPL. See COPYING for details.
  76 + */
  77 +#include <linux/ssb/ssb.h>
  78 +
  79 +#define SSB_OHCI_TMSLOW_HOSTMODE       (1 << 29)
  80 +
  81 +struct ssb_ehci_device {
  82 +       struct ehci_hcd ehci; /* _must_ be at the beginning. */
  83 +
  84 +       u32 enable_flags;
  85 +};
  86 +
  87 +static inline
  88 +struct ssb_ehci_device *hcd_to_ssb_ehci(struct usb_hcd *hcd)
  89 +{
  90 +       return (struct ssb_ehci_device *)(hcd->hcd_priv);
  91 +}
  92 +
  93 +static int ssb_ehci_reset(struct usb_hcd *hcd)
  94 +{
  95 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  96 +       int err;
  97 +
  98 +       ehci->caps = hcd->regs;
  99 +       ehci->regs = hcd->regs +
 100 +               HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
 101 +
 102 +       dbg_hcs_params(ehci, "reset");
 103 +       dbg_hcc_params(ehci, "reset");
 104 +
 105 +       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 106 +
 107 +       err = ehci_halt(ehci);
 108 +
 109 +       if (err)
 110 +               return err;
 111 +
 112 +       err = ehci_init(hcd);
 113 +
 114 +       if (err)
 115 +               return err;
 116 +
 117 +       ehci_reset(ehci);
 118 +
 119 +       return err;
 120 +}
 121 +
 122 +static const struct hc_driver ssb_ehci_hc_driver = {
 123 +       .description            = "ssb-usb-ehci",
 124 +       .product_desc           = "SSB EHCI Controller",
 125 +       .hcd_priv_size          = sizeof(struct ssb_ehci_device),
 126 +
 127 +       .irq                    = ehci_irq,
 128 +       .flags                  = HCD_MEMORY | HCD_USB2,
 129 +
 130 +       .reset                  = ssb_ehci_reset,
 131 +       .start                  = ehci_run,
 132 +       .stop                   = ehci_stop,
 133 +       .shutdown               = ehci_shutdown,
 134 +
 135 +       .urb_enqueue            = ehci_urb_enqueue,
 136 +       .urb_dequeue            = ehci_urb_dequeue,
 137 +       .endpoint_disable       = ehci_endpoint_disable,
 138 +       .endpoint_reset         = ehci_endpoint_reset,
 139 +
 140 +       .get_frame_number       = ehci_get_frame,
 141 +
 142 +       .hub_status_data        = ehci_hub_status_data,
 143 +       .hub_control            = ehci_hub_control,
 144 +       .bus_suspend            = ehci_bus_suspend,
 145 +       .bus_resume             = ehci_bus_resume,
 146 +       .relinquish_port        = ehci_relinquish_port,
 147 +       .port_handed_over       = ehci_port_handed_over,
 148 +
 149 +       .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 150 +};
 151 +
 152 +static void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd)
 153 +{
 154 +       if (hcd->driver->shutdown)
 155 +               hcd->driver->shutdown(hcd);
 156 +
 157 +       usb_remove_hcd(hcd);
 158 +
 159 +       iounmap(hcd->regs);
 160 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 161 +
 162 +       usb_put_hcd(hcd);
 163 +}
 164 +EXPORT_SYMBOL_GPL(ssb_ehci_detach);
 165 +
 166 +static int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **ehci_hcd)
 167 +{
 168 +       struct ssb_ehci_device *ehcidev;
 169 +       struct usb_hcd *hcd;
 170 +       int err = -ENOMEM;
 171 +       u32 tmp, flags = 0;
 172 +
 173 +       hcd = usb_create_hcd(&ssb_ehci_hc_driver, dev->dev,
 174 +                            dev_name(dev->dev));
 175 +       if (!hcd)
 176 +               goto err_dev_disable;
 177 +
 178 +       ehcidev = hcd_to_ssb_ehci(hcd);
 179 +       ehcidev->enable_flags = flags;
 180 +       tmp = ssb_read32(dev, SSB_ADMATCH0);
 181 +       hcd->rsrc_start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
 182 +       hcd->rsrc_len = 0x100; /* ehci reg block size */
 183 +       /*
 184 +        * start & size modified per sbutils.c
 185 +        */
 186 +       hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
 187 +       if (!hcd->regs)
 188 +               goto err_put_hcd;
 189 +       err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED | IRQF_DISABLED);
 190 +       if (err)
 191 +               goto err_iounmap;
 192 +
 193 +       *ehci_hcd = hcd;
 194 +
 195 +       return err;
 196 +
 197 +err_iounmap:
 198 +       iounmap(hcd->regs);
 199 +err_put_hcd:
 200 +       usb_put_hcd(hcd);
 201 +err_dev_disable:
 202 +       ssb_device_disable(dev, flags);
 203 +       return err;
 204 +}
 205 +EXPORT_SYMBOL_GPL(ssb_ehci_attach);
 206 +
 207 +static const struct ssb_device_id ssb_ehci_table[] = {
 208 +       SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
 209 +       SSB_DEVTABLE_END
 210 +};
 211 +MODULE_DEVICE_TABLE(ssb, ssb_ehci_table);
 212 --- a/drivers/usb/host/ohci-ssb.c
 213 +++ b/drivers/usb/host/ohci-ssb.c
 214 @@ -17,6 +17,8 @@
 215   */
 216  #include <linux/ssb/ssb.h>
 217
 218 +extern int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **hcd);
 219 +extern void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd);
 220
 221  #define SSB_OHCI_TMSLOW_HOSTMODE       (1 << 29)
 222
 223 @@ -24,6 +26,7 @@ struct ssb_ohci_device {
 224         struct ohci_hcd ohci; /* _must_ be at the beginning. */
 225
 226         u32 enable_flags;
 227 +       struct usb_hcd *ehci_hcd;
 228  };
 229
 230  static inline
 231 @@ -92,13 +95,25 @@ static const struct hc_driver ssb_ohci_h
 232  static void ssb_ohci_detach(struct ssb_device *dev)
 233  {
 234         struct usb_hcd *hcd = ssb_get_drvdata(dev);
 235 +#ifdef CONFIG_USB_EHCI_HCD_SSB
 236 +       struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
 237 +#endif
 238
 239         usb_remove_hcd(hcd);
 240         iounmap(hcd->regs);
 241         usb_put_hcd(hcd);
 242 +
 243 +#ifdef CONFIG_USB_EHCI_HCD_SSB
 244 +       /*
 245 +        * Also detach ehci function
 246 +        */
 247 +       if (dev->id.coreid == SSB_DEV_USB20_HOST)
 248 +               ssb_ehci_detach(dev, ohcidev->ehci_hcd);
 249 +#endif
 250         ssb_device_disable(dev, 0);
 251  }
 252
 253 +
 254  static int ssb_ohci_attach(struct ssb_device *dev)
 255  {
 256         struct ssb_ohci_device *ohcidev;
 257 @@ -165,6 +180,14 @@ static int ssb_ohci_attach(struct ssb_de
 258
 259         ssb_set_drvdata(dev, hcd);
 260
 261 +#ifdef CONFIG_USB_EHCI_HCD_SSB
 262 +       /*
 263 +        * attach ehci function in this core
 264 +        */
 265 +       if (dev->id.coreid == SSB_DEV_USB20_HOST)
 266 +               err = ssb_ehci_attach(dev, &(ohcidev->ehci_hcd));
 267 +#endif
 268 +
 269         return err;
 270
 271  err_iounmap: