target/linux/brcm63xx/patches-2.6.32/011-add_bcm63xx_ehci_controller.patch

   1 Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
   2 ---
   3  drivers/usb/host/ehci-bcm63xx.c |  154 +++++++++++++++++++++++++++++++++++++++
   4  drivers/usb/host/ehci-hcd.c     |    5 +
   5  2 files changed, 159 insertions(+), 0 deletions(-)
   6  create mode 100644 drivers/usb/host/ehci-bcm63xx.c
   7
   8 diff --git a/drivers/usb/host/ehci-bcm63xx.c b/drivers/usb/host/ehci-bcm63xx.c
   9 new file mode 100644
  10 index 0000000..50638f7
  11 --- /dev/null
  12 +++ b/drivers/usb/host/ehci-bcm63xx.c
  13 @@ -0,0 +1,154 @@
  14 +/*
  15 + * This file is subject to the terms and conditions of the GNU General Public
  16 + * License.  See the file "COPYING" in the main directory of this archive
  17 + * for more details.
  18 + *
  19 + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
  20 + */
  21 +
  22 +#include <linux/init.h>
  23 +#include <linux/platform_device.h>
  24 +#include <bcm63xx_cpu.h>
  25 +#include <bcm63xx_regs.h>
  26 +#include <bcm63xx_io.h>
  27 +
  28 +static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
  29 +{
  30 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  31 +       int retval;
  32 +
  33 +       retval = ehci_halt(ehci);
  34 +       if (retval)
  35 +               return retval;
  36 +
  37 +       retval = ehci_init(hcd);
  38 +       if (retval)
  39 +               return retval;
  40 +
  41 +       ehci_reset(ehci);
  42 +       ehci_port_power(ehci, 0);
  43 +
  44 +       return retval;
  45 +}
  46 +
  47 +
  48 +static const struct hc_driver ehci_bcm63xx_hc_driver = {
  49 +       .description =          hcd_name,
  50 +       .product_desc =         "BCM63XX integrated EHCI controller",
  51 +       .hcd_priv_size =        sizeof(struct ehci_hcd),
  52 +
  53 +       .irq =                  ehci_irq,
  54 +       .flags =                HCD_MEMORY | HCD_USB2,
  55 +
  56 +       .reset =                ehci_bcm63xx_setup,
  57 +       .start =                ehci_run,
  58 +       .stop =                 ehci_stop,
  59 +       .shutdown =             ehci_shutdown,
  60 +
  61 +       .urb_enqueue =          ehci_urb_enqueue,
  62 +       .urb_dequeue =          ehci_urb_dequeue,
  63 +       .endpoint_disable =     ehci_endpoint_disable,
  64 +
  65 +       .get_frame_number =     ehci_get_frame,
  66 +
  67 +       .hub_status_data =      ehci_hub_status_data,
  68 +       .hub_control =          ehci_hub_control,
  69 +       .bus_suspend =          ehci_bus_suspend,
  70 +       .bus_resume =           ehci_bus_resume,
  71 +       .relinquish_port =      ehci_relinquish_port,
  72 +       .port_handed_over =     ehci_port_handed_over,
  73 +};
  74 +
  75 +static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
  76 +{
  77 +       struct resource *res_mem;
  78 +       struct usb_hcd *hcd;
  79 +       struct ehci_hcd *ehci;
  80 +       u32 reg;
  81 +       int ret, irq;
  82 +
  83 +       res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  84 +       irq = platform_get_irq(pdev, 0);;
  85 +       if (!res_mem || irq < 0)
  86 +               return -ENODEV;
  87 +
  88 +       reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
  89 +       reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
  90 +       reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
  91 +       bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
  92 +
  93 +       /*
  94 +        * The magic value comes for the original vendor BSP and is
  95 +        * needed for USB to work. Datasheet does not help, so the
  96 +        * magic value is used as-is.
  97 +        */
  98 +       bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG);
  99 +
 100 +       hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
 101 +       if (!hcd)
 102 +               return -ENOMEM;
 103 +       hcd->rsrc_start = res_mem->start;
 104 +       hcd->rsrc_len = res_mem->end - res_mem->start + 1;
 105 +
 106 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 107 +               pr_debug("request_mem_region failed\n");
 108 +               ret = -EBUSY;
 109 +               goto out;
 110 +       }
 111 +
 112 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 113 +       if (!hcd->regs) {
 114 +               pr_debug("ioremap failed\n");
 115 +               ret = -EIO;
 116 +               goto out1;
 117 +       }
 118 +
 119 +       ehci = hcd_to_ehci(hcd);
 120 +       ehci->big_endian_mmio = 1;
 121 +       ehci->big_endian_desc = 0;
 122 +       ehci->caps = hcd->regs;
 123 +       ehci->regs = hcd->regs +
 124 +               HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
 125 +       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 126 +       ehci->sbrn = 0x20;
 127 +
 128 +       ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 129 +       if (ret)
 130 +               goto out2;
 131 +
 132 +       platform_set_drvdata(pdev, hcd);
 133 +       return 0;
 134 +
 135 +out2:
 136 +       iounmap(hcd->regs);
 137 +out1:
 138 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 139 +out:
 140 +       usb_put_hcd(hcd);
 141 +       return ret;
 142 +}
 143 +
 144 +static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
 145 +{
 146 +       struct usb_hcd *hcd;
 147 +
 148 +       hcd = platform_get_drvdata(pdev);
 149 +       usb_remove_hcd(hcd);
 150 +       iounmap(hcd->regs);
 151 +       usb_put_hcd(hcd);
 152 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 153 +       platform_set_drvdata(pdev, NULL);
 154 +       return 0;
 155 +}
 156 +
 157 +static struct platform_driver ehci_hcd_bcm63xx_driver = {
 158 +       .probe          = ehci_hcd_bcm63xx_drv_probe,
 159 +       .remove         = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
 160 +       .shutdown       = usb_hcd_platform_shutdown,
 161 +       .driver         = {
 162 +               .name   = "bcm63xx_ehci",
 163 +               .owner  = THIS_MODULE,
 164 +       },
 165 +};
 166 +
 167 +MODULE_ALIAS("platform:bcm63xx_ehci");
 168 diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
 169 index 1ec3857..8e7c61e 100644
 170 --- a/drivers/usb/host/ehci-hcd.c
 171 +++ b/drivers/usb/host/ehci-hcd.c
 172 @@ -1158,6 +1158,11 @@ MODULE_LICENSE ("GPL");
 173  #define        PLATFORM_DRIVER         ehci_atmel_driver
 174  #endif
 175
 176 +#ifdef CONFIG_BCM63XX
 177 +#include "ehci-bcm63xx.c"
 178 +#define        PLATFORM_DRIVER         ehci_hcd_bcm63xx_driver
 179 +#endif
 180 +
 181  #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
 182      !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
 183  #error "missing bus glue for ehci-hcd"
 184 --
 185 1.6.3.3
 186
 187