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 --- /dev/null
   9 +++ b/drivers/usb/host/ehci-bcm63xx.c
  10 @@ -0,0 +1,154 @@
  11 +/*
  12 + * This file is subject to the terms and conditions of the GNU General Public
  13 + * License.  See the file "COPYING" in the main directory of this archive
  14 + * for more details.
  15 + *
  16 + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
  17 + */
  18 +
  19 +#include <linux/init.h>
  20 +#include <linux/platform_device.h>
  21 +#include <bcm63xx_cpu.h>
  22 +#include <bcm63xx_regs.h>
  23 +#include <bcm63xx_io.h>
  24 +
  25 +static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
  26 +{
  27 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  28 +       int retval;
  29 +
  30 +       retval = ehci_halt(ehci);
  31 +       if (retval)
  32 +               return retval;
  33 +
  34 +       retval = ehci_init(hcd);
  35 +       if (retval)
  36 +               return retval;
  37 +
  38 +       ehci_reset(ehci);
  39 +       ehci_port_power(ehci, 0);
  40 +
  41 +       return retval;
  42 +}
  43 +
  44 +
  45 +static const struct hc_driver ehci_bcm63xx_hc_driver = {
  46 +       .description =          hcd_name,
  47 +       .product_desc =         "BCM63XX integrated EHCI controller",
  48 +       .hcd_priv_size =        sizeof(struct ehci_hcd),
  49 +
  50 +       .irq =                  ehci_irq,
  51 +       .flags =                HCD_MEMORY | HCD_USB2,
  52 +
  53 +       .reset =                ehci_bcm63xx_setup,
  54 +       .start =                ehci_run,
  55 +       .stop =                 ehci_stop,
  56 +       .shutdown =             ehci_shutdown,
  57 +
  58 +       .urb_enqueue =          ehci_urb_enqueue,
  59 +       .urb_dequeue =          ehci_urb_dequeue,
  60 +       .endpoint_disable =     ehci_endpoint_disable,
  61 +
  62 +       .get_frame_number =     ehci_get_frame,
  63 +
  64 +       .hub_status_data =      ehci_hub_status_data,
  65 +       .hub_control =          ehci_hub_control,
  66 +       .bus_suspend =          ehci_bus_suspend,
  67 +       .bus_resume =           ehci_bus_resume,
  68 +       .relinquish_port =      ehci_relinquish_port,
  69 +       .port_handed_over =     ehci_port_handed_over,
  70 +};
  71 +
  72 +static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
  73 +{
  74 +       struct resource *res_mem;
  75 +       struct usb_hcd *hcd;
  76 +       struct ehci_hcd *ehci;
  77 +       u32 reg;
  78 +       int ret, irq;
  79 +
  80 +       res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  81 +       irq = platform_get_irq(pdev, 0);;
  82 +       if (!res_mem || irq < 0)
  83 +               return -ENODEV;
  84 +
  85 +       reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
  86 +       reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
  87 +       reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
  88 +       bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
  89 +
  90 +       /*
  91 +        * The magic value comes for the original vendor BSP and is
  92 +        * needed for USB to work. Datasheet does not help, so the
  93 +        * magic value is used as-is.
  94 +        */
  95 +       bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG);
  96 +
  97 +       hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
  98 +       if (!hcd)
  99 +               return -ENOMEM;
 100 +       hcd->rsrc_start = res_mem->start;
 101 +       hcd->rsrc_len = res_mem->end - res_mem->start + 1;
 102 +
 103 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 104 +               pr_debug("request_mem_region failed\n");
 105 +               ret = -EBUSY;
 106 +               goto out;
 107 +       }
 108 +
 109 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 110 +       if (!hcd->regs) {
 111 +               pr_debug("ioremap failed\n");
 112 +               ret = -EIO;
 113 +               goto out1;
 114 +       }
 115 +
 116 +       ehci = hcd_to_ehci(hcd);
 117 +       ehci->big_endian_mmio = 1;
 118 +       ehci->big_endian_desc = 0;
 119 +       ehci->caps = hcd->regs;
 120 +       ehci->regs = hcd->regs +
 121 +               HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
 122 +       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 123 +       ehci->sbrn = 0x20;
 124 +
 125 +       ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 126 +       if (ret)
 127 +               goto out2;
 128 +
 129 +       platform_set_drvdata(pdev, hcd);
 130 +       return 0;
 131 +
 132 +out2:
 133 +       iounmap(hcd->regs);
 134 +out1:
 135 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 136 +out:
 137 +       usb_put_hcd(hcd);
 138 +       return ret;
 139 +}
 140 +
 141 +static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
 142 +{
 143 +       struct usb_hcd *hcd;
 144 +
 145 +       hcd = platform_get_drvdata(pdev);
 146 +       usb_remove_hcd(hcd);
 147 +       iounmap(hcd->regs);
 148 +       usb_put_hcd(hcd);
 149 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 150 +       platform_set_drvdata(pdev, NULL);
 151 +       return 0;
 152 +}
 153 +
 154 +static struct platform_driver ehci_hcd_bcm63xx_driver = {
 155 +       .probe          = ehci_hcd_bcm63xx_drv_probe,
 156 +       .remove         = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
 157 +       .shutdown       = usb_hcd_platform_shutdown,
 158 +       .driver         = {
 159 +               .name   = "bcm63xx_ehci",
 160 +               .owner  = THIS_MODULE,
 161 +       },
 162 +};
 163 +
 164 +MODULE_ALIAS("platform:bcm63xx_ehci");
 165 --- a/drivers/usb/host/ehci-hcd.c
 166 +++ b/drivers/usb/host/ehci-hcd.c
 167 @@ -1142,6 +1142,11 @@ MODULE_LICENSE ("GPL");
 168  #define        PLATFORM_DRIVER         ehci_atmel_driver
 169  #endif
 170
 171 +#ifdef CONFIG_BCM63XX
 172 +#include "ehci-bcm63xx.c"
 173 +#define        PLATFORM_DRIVER         ehci_hcd_bcm63xx_driver
 174 +#endif
 175 +
 176  #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
 177      !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
 178  #error "missing bus glue for ehci-hcd"