target/linux/cns21xx/patches-3.8/103-cns21xx-usb-ohci-support.patch

   1 --- a/drivers/usb/host/ohci-hcd.c
   2 +++ b/drivers/usb/host/ohci-hcd.c
   3 @@ -691,6 +691,9 @@ retry:
   4
   5         periodic_reinit (ohci);
   6
   7 +       if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL)
   8 +               ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval);
   9 +
  10         /* some OHCI implementations are finicky about how they init.
  11          * bogus values here mean not even enumeration could work.
  12          */
  13 @@ -1186,6 +1189,11 @@ MODULE_LICENSE ("GPL");
  14  #define PLATFORM_DRIVER                ohci_hcd_tilegx_driver
  15  #endif
  16
  17 +#ifdef CONFIG_ARCH_CNS21XX
  18 +#include "ohci-cns21xx.c"
  19 +#define PLATFORM_DRIVER                ohci_cns21xx_driver
  20 +#endif
  21 +
  22  #ifdef CONFIG_USB_OHCI_HCD_PLATFORM
  23  #include "ohci-platform.c"
  24  #define OHCI_PLATFORM_DRIVER           ohci_platform_driver
  25 --- /dev/null
  26 +++ b/drivers/usb/host/ohci-cns21xx.c
  27 @@ -0,0 +1,178 @@
  28 +/*
  29 + *  Copyright (c) 2008 Cavium Networks
  30 + *  Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org>
  31 + *
  32 + *  This file is free software; you can redistribute it and/or modify
  33 + *  it under the terms of the GNU General Public License, Version 2, as
  34 + *  published by the Free Software Foundation.
  35 + */
  36 +
  37 +#include <linux/platform_device.h>
  38 +
  39 +#include <mach/cns21xx.h>
  40 +
  41 +#define DRIVER_NAME    "cns21xx-ohci"
  42 +
  43 +static int cns21xx_ohci_start(struct usb_hcd *hcd)
  44 +{
  45 +       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  46 +       int ret;
  47 +
  48 +       ret = ohci_init(ohci);
  49 +       if (ret)
  50 +               return ret;
  51 +
  52 +       ret = ohci_run(ohci);
  53 +       if (ret) {
  54 +               ohci_err(ohci, "can't start %s",
  55 +                        ohci_to_hcd(ohci)->self.bus_name);
  56 +               goto err;
  57 +       }
  58 +
  59 +       return 0;
  60 +
  61 +err:
  62 +       ohci_stop(hcd);
  63 +       return ret;
  64 +}
  65 +
  66 +static const struct hc_driver ohci_cns21xx_hc_driver = {
  67 +       .description            = hcd_name,
  68 +       .product_desc           = "cns21xx-ohci",
  69 +       .hcd_priv_size          = sizeof(struct ohci_hcd),
  70 +
  71 +       /*
  72 +        * generic hardware linkage
  73 +        */
  74 +       .irq                    = ohci_irq,
  75 +       .flags                  = HCD_USB11 | HCD_MEMORY,
  76 +
  77 +       /*
  78 +        * basic lifecycle operations
  79 +        */
  80 +       .start                  = cns21xx_ohci_start,
  81 +       .stop                   = ohci_stop,
  82 +       .shutdown               = ohci_shutdown,
  83 +
  84 +       /*
  85 +        * managing i/o requests and associated device resources
  86 +        */
  87 +       .urb_enqueue            = ohci_urb_enqueue,
  88 +       .urb_dequeue            = ohci_urb_dequeue,
  89 +       .endpoint_disable       = ohci_endpoint_disable,
  90 +
  91 +       /*
  92 +        * scheduling support
  93 +        */
  94 +       .get_frame_number       = ohci_get_frame,
  95 +
  96 +       /*
  97 +        * root hub support
  98 +        */
  99 +       .hub_status_data        = ohci_hub_status_data,
 100 +       .hub_control            = ohci_hub_control,
 101 +       .start_port_reset       = ohci_start_port_reset,
 102 +};
 103 +
 104 +static void cns21xx_ohci_init_hc(void)
 105 +{
 106 +       void __iomem *base = (void __iomem *) CNS21XX_OHCI_CONFIG_BASE_VIRT;
 107 +
 108 +       __raw_writel(0x146, base + 0x04);
 109 +       __raw_writel(0x200, base + 0x44);
 110 +       msleep(100);
 111 +}
 112 +
 113 +static int ohci_cns21xx_probe(struct platform_device *pdev)
 114 +{
 115 +       struct usb_hcd *hcd;
 116 +       struct resource *res;
 117 +       struct ohci_hcd *ohci;
 118 +       int irq;
 119 +       int ret;
 120 +
 121 +       if (usb_disabled())
 122 +               return -ENODEV;
 123 +
 124 +       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 125 +       if (!res) {
 126 +               dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
 127 +                       dev_name(&pdev->dev));
 128 +               return -ENODEV;
 129 +       }
 130 +       irq = res->start;
 131 +
 132 +       hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev,
 133 +                            dev_name(&pdev->dev));
 134 +       if (!hcd)
 135 +               return -ENOMEM;
 136 +
 137 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 138 +       if (!res) {
 139 +               dev_dbg(&pdev->dev, "no base address specified for %s\n",
 140 +                       dev_name(&pdev->dev));
 141 +               ret = -ENODEV;
 142 +               goto err_put_hcd;
 143 +       }
 144 +       hcd->rsrc_start = res->start;
 145 +       hcd->rsrc_len   = res->end - res->start + 1;
 146 +
 147 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 148 +               dev_dbg(&pdev->dev, "controller already in use\n");
 149 +               ret = -EBUSY;
 150 +               goto err_put_hcd;
 151 +       }
 152 +
 153 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 154 +       if (!hcd->regs) {
 155 +               dev_dbg(&pdev->dev, "error mapping memory\n");
 156 +               ret = -EFAULT;
 157 +               goto err_release_region;
 158 +       }
 159 +
 160 +       cns21xx_ohci_init_hc();
 161 +
 162 +       ohci = hcd_to_ohci(hcd);
 163 +       ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL;
 164 +       ohci_hcd_init(ohci);
 165 +
 166 +       ret = usb_add_hcd(hcd, irq,  IRQF_DISABLED);
 167 +       if (ret)
 168 +               goto err_unmap;
 169 +
 170 +       platform_set_drvdata(pdev, hcd);
 171 +       return 0;
 172 +
 173 +err_unmap:
 174 +       iounmap(hcd->regs);
 175 +err_release_region:
 176 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 177 +err_put_hcd:
 178 +       usb_put_hcd(hcd);
 179 +       return ret;
 180 +}
 181 +
 182 +static int ohci_cns21xx_remove(struct platform_device *pdev)
 183 +{
 184 +       struct usb_hcd *hcd = platform_get_drvdata(pdev);
 185 +
 186 +       usb_remove_hcd(hcd);
 187 +       iounmap(hcd->regs);
 188 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 189 +       usb_put_hcd(hcd);
 190 +       platform_set_drvdata(pdev, NULL);
 191 +
 192 +       return 0;
 193 +}
 194 +
 195 +static struct platform_driver ohci_cns21xx_driver = {
 196 +       .probe          = ohci_cns21xx_probe,
 197 +       .remove         = ohci_cns21xx_remove,
 198 +       .shutdown       = usb_hcd_platform_shutdown,
 199 +       .driver         = {
 200 +               .owner  = THIS_MODULE,
 201 +               .name   = DRIVER_NAME,
 202 +       },
 203 +};
 204 +
 205 +MODULE_ALIAS("platform:" DRIVER_NAME);
 206 --- a/drivers/usb/host/ohci.h
 207 +++ b/drivers/usb/host/ohci.h
 208 @@ -405,6 +405,7 @@ struct ohci_hcd {
 209  #define        OHCI_QUIRK_HUB_POWER    0x100                   /* distrust firmware power/oc setup */
 210  #define        OHCI_QUIRK_AMD_PLL      0x200                   /* AMD PLL quirk*/
 211  #define        OHCI_QUIRK_AMD_PREFETCH 0x400                   /* pre-fetch for ISO transfer */
 212 +#define        OHCI_QUIRK_INIT_FMINTERVAL 0x1000               /* fminterval must be initialized */
 213         // there are also chip quirks/bugs in init logic
 214
 215         struct work_struct      nec_work;       /* Worker for NEC quirk */
 216 --- a/arch/arm/Kconfig
 217 +++ b/arch/arm/Kconfig
 218 @@ -381,6 +381,7 @@ config ARCH_CNS21XX
 219         select PLAT_FA_GPIO
 220         select ARCH_REQUIRE_GPIOLIB
 221         select ARM_L1_CACHE_SHIFT_4
 222 +       select USB_ARCH_HAS_OHCI
 223         help
 224           Support for Cavium Networks CNS21xx family.
 225