target/linux/ixp4xx/patches-2.6.24/402-ixp4xx_ehci_backport.patch

   1 Index: linux-2.6.24.7/drivers/usb/host/ehci.h
   2 ===================================================================
   3 --- linux-2.6.24.7.orig/drivers/usb/host/ehci.h
   4 +++ linux-2.6.24.7/drivers/usb/host/ehci.h
   5 @@ -730,6 +730,11 @@ ehci_port_speed(struct ehci_hcd *ehci, u
   6  #define writel_be(val, addr)   out_be32((__force unsigned *)addr, val)
   7  #endif
   8
   9 +#if defined(CONFIG_ARM) && defined(CONFIG_ARCH_IXP4XX)
  10 +#define readl_be(addr)         __raw_readl((__force unsigned *)addr)
  11 +#define writel_be(val, addr)   __raw_writel(val, (__force unsigned *)addr)
  12 +#endif
  13 +
  14  static inline unsigned int ehci_readl(const struct ehci_hcd *ehci,
  15                 __u32 __iomem * regs)
  16  {
  17 Index: linux-2.6.24.7/drivers/usb/host/ehci-hcd.c
  18 ===================================================================
  19 --- linux-2.6.24.7.orig/drivers/usb/host/ehci-hcd.c
  20 +++ linux-2.6.24.7/drivers/usb/host/ehci-hcd.c
  21 @@ -964,6 +964,11 @@ MODULE_LICENSE ("GPL");
  22  #define        PLATFORM_DRIVER         ehci_ppc_soc_driver
  23  #endif
  24
  25 +#ifdef CONFIG_ARCH_IXP4XX
  26 +#include "ehci-ixp4xx.c"
  27 +#define        PLATFORM_DRIVER         ixp4xx_ehci_driver
  28 +#endif
  29 +
  30  #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
  31      !defined(PS3_SYSTEM_BUS_DRIVER)
  32  #error "missing bus glue for ehci-hcd"
  33 Index: linux-2.6.24.7/drivers/usb/host/ehci-ixp4xx.c
  34 ===================================================================
  35 --- /dev/null
  36 +++ linux-2.6.24.7/drivers/usb/host/ehci-ixp4xx.c
  37 @@ -0,0 +1,152 @@
  38 +/*
  39 + * IXP4XX EHCI Host Controller Driver
  40 + *
  41 + * Author: Vladimir Barinov <vbarinov@ru.mvista.com>
  42 + *
  43 + * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com>
  44 + *
  45 + * 2007 (c) MontaVista Software, Inc. This file is licensed under
  46 + * the terms of the GNU General Public License version 2. This program
  47 + * is licensed "as is" without any warranty of any kind, whether express
  48 + * or implied.
  49 + */
  50 +
  51 +#include <linux/platform_device.h>
  52 +
  53 +static int ixp4xx_ehci_init(struct usb_hcd *hcd)
  54 +{
  55 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  56 +       int retval = 0;
  57 +
  58 +       ehci->big_endian_desc = 1;
  59 +       ehci->big_endian_mmio = 1;
  60 +
  61 +       ehci->caps = hcd->regs + 0x100;
  62 +       ehci->regs = hcd->regs + 0x100
  63 +               + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
  64 +       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
  65 +
  66 +       ehci->is_tdi_rh_tt = 1;
  67 +       ehci_reset(ehci);
  68 +
  69 +       retval = ehci_init(hcd);
  70 +       if (retval)
  71 +               return retval;
  72 +
  73 +       ehci_port_power(ehci, 0);
  74 +
  75 +       return retval;
  76 +}
  77 +
  78 +static const struct hc_driver ixp4xx_ehci_hc_driver = {
  79 +       .description            = hcd_name,
  80 +       .product_desc           = "IXP4XX EHCI Host Controller",
  81 +       .hcd_priv_size          = sizeof(struct ehci_hcd),
  82 +       .irq                    = ehci_irq,
  83 +       .flags                  = HCD_MEMORY | HCD_USB2,
  84 +       .reset                  = ixp4xx_ehci_init,
  85 +       .start                  = ehci_run,
  86 +       .stop                   = ehci_stop,
  87 +       .shutdown               = ehci_shutdown,
  88 +       .urb_enqueue            = ehci_urb_enqueue,
  89 +       .urb_dequeue            = ehci_urb_dequeue,
  90 +       .endpoint_disable       = ehci_endpoint_disable,
  91 +       .get_frame_number       = ehci_get_frame,
  92 +       .hub_status_data        = ehci_hub_status_data,
  93 +       .hub_control            = ehci_hub_control,
  94 +#if defined(CONFIG_PM)
  95 +       .bus_suspend            = ehci_bus_suspend,
  96 +       .bus_resume             = ehci_bus_resume,
  97 +#endif
  98 +};
  99 +
 100 +static int ixp4xx_ehci_probe(struct platform_device *pdev)
 101 +{
 102 +       struct usb_hcd *hcd;
 103 +       const struct hc_driver *driver = &ixp4xx_ehci_hc_driver;
 104 +       struct resource *res;
 105 +       int irq;
 106 +       int retval;
 107 +
 108 +       if (usb_disabled())
 109 +               return -ENODEV;
 110 +
 111 +       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 112 +       if (!res) {
 113 +               dev_err(&pdev->dev,
 114 +                       "Found HC with no IRQ. Check %s setup!\n",
 115 +                       pdev->dev.bus_id);
 116 +               return -ENODEV;
 117 +       }
 118 +       irq = res->start;
 119 +
 120 +       hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
 121 +       if (!hcd) {
 122 +               retval = -ENOMEM;
 123 +               goto fail_create_hcd;
 124 +       }
 125 +
 126 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 127 +       if (!res) {
 128 +               dev_err(&pdev->dev,
 129 +                       "Found HC with no register addr. Check %s setup!\n",
 130 +                       pdev->dev.bus_id);
 131 +               retval = -ENODEV;
 132 +               goto fail_request_resource;
 133 +       }
 134 +       hcd->rsrc_start = res->start;
 135 +       hcd->rsrc_len = res->end - res->start + 1;
 136 +
 137 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
 138 +                               driver->description)) {
 139 +               dev_dbg(&pdev->dev, "controller already in use\n");
 140 +               retval = -EBUSY;
 141 +               goto fail_request_resource;
 142 +       }
 143 +
 144 +       hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
 145 +       if (hcd->regs == NULL) {
 146 +               dev_dbg(&pdev->dev, "error mapping memory\n");
 147 +               retval = -EFAULT;
 148 +               goto fail_ioremap;
 149 +       }
 150 +
 151 +       retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
 152 +       if (retval)
 153 +               goto fail_add_hcd;
 154 +
 155 +       return retval;
 156 +
 157 +fail_add_hcd:
 158 +       iounmap(hcd->regs);
 159 +fail_ioremap:
 160 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 161 +fail_request_resource:
 162 +       usb_put_hcd(hcd);
 163 +fail_create_hcd:
 164 +       dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
 165 +       return retval;
 166 +}
 167 +
 168 +static int ixp4xx_ehci_remove(struct platform_device *pdev)
 169 +{
 170 +       struct usb_hcd *hcd = platform_get_drvdata(pdev);
 171 +
 172 +       usb_remove_hcd(hcd);
 173 +       iounmap(hcd->regs);
 174 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 175 +       usb_put_hcd(hcd);
 176 +
 177 +       return 0;
 178 +}
 179 +
 180 +MODULE_ALIAS("platform:ixp4xx-ehci");
 181 +
 182 +static struct platform_driver ixp4xx_ehci_driver = {
 183 +       .probe = ixp4xx_ehci_probe,
 184 +       .remove = ixp4xx_ehci_remove,
 185 +       .driver = {
 186 +               .name = "ixp4xx-ehci",
 187 +//             .bus = &platform_bus_type
 188 +       },
 189 +};
 190 Index: linux-2.6.24.7/drivers/usb/host/Kconfig
 191 ===================================================================
 192 --- linux-2.6.24.7.orig/drivers/usb/host/Kconfig
 193 +++ linux-2.6.24.7/drivers/usb/host/Kconfig
 194 @@ -69,12 +69,12 @@ config USB_EHCI_TT_NEWSCHED
 195
 196  config USB_EHCI_BIG_ENDIAN_MMIO
 197         bool
 198 -       depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX)
 199 +       depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || ARCH_IXP4XX)
 200         default y
 201
 202  config USB_EHCI_BIG_ENDIAN_DESC
 203         bool
 204 -       depends on USB_EHCI_HCD && 440EPX
 205 +       depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX)
 206         default y
 207
 208  config USB_EHCI_FSL
 209 Index: linux-2.6.24.7/drivers/usb/Kconfig
 210 ===================================================================
 211 --- linux-2.6.24.7.orig/drivers/usb/Kconfig
 212 +++ linux-2.6.24.7/drivers/usb/Kconfig
 213 @@ -49,6 +49,7 @@ config USB_ARCH_HAS_EHCI
 214         boolean
 215         default y if PPC_83xx
 216         default y if SOC_AU1200
 217 +       default y if ARCH_IXP4XX
 218         default PCI
 219
 220  # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.