target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch

   1 --- a/drivers/usb/host/ohci-hcd.c
   2 +++ b/drivers/usb/host/ohci-hcd.c
   3 @@ -589,7 +589,6 @@ static int ohci_run (struct ohci_hcd *oh
   4
   5         /* boot firmware should have set this up (5.1.1.3.1) */
   6         if (first) {
   7 -
   8                 val = ohci_readl (ohci, &ohci->regs->fminterval);
   9                 ohci->fminterval = val & 0x3fff;
  10                 if (ohci->fminterval != FI)
  11 @@ -673,6 +672,9 @@ retry:
  12
  13         periodic_reinit (ohci);
  14
  15 +       if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL)
  16 +               ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval);
  17 +
  18         /* some OHCI implementations are finicky about how they init.
  19          * bogus values here mean not even enumeration could work.
  20          */
  21 @@ -1067,6 +1069,11 @@ MODULE_LICENSE ("GPL");
  22  #define PLATFORM_DRIVER                ohci_hcd_da8xx_driver
  23  #endif
  24
  25 +#ifdef CONFIG_ARCH_CNS21XX
  26 +#include "ohci-cns21xx.c"
  27 +#define PLATFORM_DRIVER                ohci_cns21xx_driver
  28 +#endif
  29 +
  30  #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
  31      defined(CONFIG_CPU_SUBTYPE_SH7721) || \
  32      defined(CONFIG_CPU_SUBTYPE_SH7763) || \
  33 --- /dev/null
  34 +++ b/drivers/usb/host/ohci-cns21xx.c
  35 @@ -0,0 +1,175 @@
  36 +/*
  37 + *  Copyright (c) 2008 Cavium Networks
  38 + *  Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
  39 + *
  40 + *  This file is free software; you can redistribute it and/or modify
  41 + *  it under the terms of the GNU General Public License, Version 2, as
  42 + *  published by the Free Software Foundation.
  43 + */
  44 +
  45 +#include <linux/platform_device.h>
  46 +
  47 +#include <mach/cns21xx.h>
  48 +
  49 +#define DRIVER_NAME    "cns21xx-ohci"
  50 +
  51 +static int __devinit cns21xx_ohci_start(struct usb_hcd *hcd)
  52 +{
  53 +       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  54 +       int ret;
  55 +
  56 +       ret = ohci_init(ohci);
  57 +       if (ret)
  58 +               return ret;
  59 +
  60 +       ret = ohci_run(ohci);
  61 +       if (ret) {
  62 +               err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
  63 +               goto err;
  64 +       }
  65 +
  66 +       return 0;
  67 +
  68 +err:
  69 +       ohci_stop(hcd);
  70 +       return ret;
  71 +}
  72 +
  73 +static const struct hc_driver ohci_cns21xx_hc_driver = {
  74 +       .description            = hcd_name,
  75 +       .product_desc           = "cns21xx-ohci",
  76 +       .hcd_priv_size          = sizeof(struct ohci_hcd),
  77 +
  78 +       /*
  79 +        * generic hardware linkage
  80 +        */
  81 +       .irq                    = ohci_irq,
  82 +       .flags                  = HCD_USB11 | HCD_MEMORY,
  83 +
  84 +       /*
  85 +        * basic lifecycle operations
  86 +        */
  87 +       .start                  = cns21xx_ohci_start,
  88 +       .stop                   = ohci_stop,
  89 +       .shutdown               = ohci_shutdown,
  90 +
  91 +       /*
  92 +        * managing i/o requests and associated device resources
  93 +        */
  94 +       .urb_enqueue            = ohci_urb_enqueue,
  95 +       .urb_dequeue            = ohci_urb_dequeue,
  96 +       .endpoint_disable       = ohci_endpoint_disable,
  97 +
  98 +       /*
  99 +        * scheduling support
 100 +        */
 101 +       .get_frame_number       = ohci_get_frame,
 102 +
 103 +       /*
 104 +        * root hub support
 105 +        */
 106 +       .hub_status_data        = ohci_hub_status_data,
 107 +       .hub_control            = ohci_hub_control,
 108 +       .start_port_reset       = ohci_start_port_reset,
 109 +};
 110 +
 111 +static void cns21xx_ohci_init_hc(void)
 112 +{
 113 +       __raw_writel(0x146, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x04);
 114 +       __raw_writel(0x200, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x44);
 115 +       msleep(100);
 116 +}
 117 +
 118 +static int ohci_cns21xx_probe(struct platform_device *pdev)
 119 +{
 120 +       struct usb_hcd *hcd;
 121 +       struct resource *res;
 122 +       struct ohci_hcd *ohci;
 123 +       int irq;
 124 +       int ret;
 125 +
 126 +       if (usb_disabled())
 127 +               return -ENODEV;
 128 +
 129 +       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 130 +       if (!res) {
 131 +               dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
 132 +                       dev_name(&pdev->dev));
 133 +               return -ENODEV;
 134 +       }
 135 +       irq = res->start;
 136 +
 137 +       hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev,
 138 +                            dev_name(&pdev->dev));
 139 +       if (!hcd)
 140 +               return -ENOMEM;
 141 +
 142 +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 143 +       if (!res) {
 144 +               dev_dbg(&pdev->dev, "no base address specified for %s\n",
 145 +                       dev_name(&pdev->dev));
 146 +               ret = -ENODEV;
 147 +               goto err_put_hcd;
 148 +       }
 149 +       hcd->rsrc_start = res->start;
 150 +       hcd->rsrc_len   = res->end - res->start + 1;
 151 +
 152 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 153 +               dev_dbg(&pdev->dev, "controller already in use\n");
 154 +               ret = -EBUSY;
 155 +               goto err_put_hcd;
 156 +       }
 157 +
 158 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 159 +       if (!hcd->regs) {
 160 +               dev_dbg(&pdev->dev, "error mapping memory\n");
 161 +               ret = -EFAULT;
 162 +               goto err_release_region;
 163 +       }
 164 +
 165 +       cns21xx_ohci_init_hc();
 166 +
 167 +       ohci = hcd_to_ohci(hcd);
 168 +       ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL;
 169 +       ohci_hcd_init(ohci);
 170 +
 171 +       ret = usb_add_hcd(hcd, irq,  IRQF_DISABLED);
 172 +       if (ret)
 173 +               goto err_unmap;
 174 +
 175 +       platform_set_drvdata(pdev, hcd);
 176 +       return 0;
 177 +
 178 +err_unmap:
 179 +       iounmap(hcd->regs);
 180 +err_release_region:
 181 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 182 +err_put_hcd:
 183 +       usb_put_hcd(hcd);
 184 +       return ret;
 185 +}
 186 +
 187 +static int ohci_cns21xx_remove(struct platform_device *pdev)
 188 +{
 189 +       struct usb_hcd *hcd = platform_get_drvdata(pdev);
 190 +
 191 +       usb_remove_hcd(hcd);
 192 +       iounmap(hcd->regs);
 193 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 194 +       usb_put_hcd(hcd);
 195 +       platform_set_drvdata(pdev, NULL);
 196 +
 197 +       return 0;
 198 +}
 199 +
 200 +static struct platform_driver ohci_cns21xx_driver = {
 201 +       .probe          = ohci_cns21xx_probe,
 202 +       .remove         = ohci_cns21xx_remove,
 203 +       .shutdown       = usb_hcd_platform_shutdown,
 204 +       .driver         = {
 205 +               .owner  = THIS_MODULE,
 206 +               .name   = DRIVER_NAME,
 207 +       },
 208 +};
 209 +
 210 +MODULE_ALIAS("platform:" DRIVER_NAME);
 211 --- a/drivers/usb/host/ohci.h
 212 +++ b/drivers/usb/host/ohci.h
 213 @@ -404,6 +404,7 @@ struct ohci_hcd {
 214  #define        OHCI_QUIRK_AMD_ISO      0x200                   /* ISO transfers*/
 215  #define        OHCI_QUIRK_AMD_PREFETCH 0x400                   /* pre-fetch for ISO transfer */
 216  #define        OHCI_QUIRK_SHUTDOWN     0x800                   /* nVidia power bug */
 217 +#define OHCI_QUIRK_INIT_FMINTERVAL 0x1000              /* fminterval must be initialized */
 218         // there are also chip quirks/bugs in init logic
 219
 220         struct work_struct      nec_work;       /* Worker for NEC quirk */
 221 --- a/arch/arm/Kconfig
 222 +++ b/arch/arm/Kconfig
 223 @@ -299,6 +299,7 @@ config ARCH_CNS21XX
 224         select PLAT_FA_GPIO
 225         select ARCH_REQUIRE_GPIOLIB
 226         select ARM_L1_CACHE_SHIFT_4
 227 +       select USB_ARCH_HAS_OHCI
 228         help
 229           Support for Cavium Networks CNS21xx family.
 230