target/linux/ramips/patches-3.14/0038-USB-add-OHCI-EHCI-OF-binding.patch

   1 From ffb27de4760595c356ef619c97f25722c8db28e7 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sun, 27 Jul 2014 09:49:07 +0100
   4 Subject: [PATCH 38/57] USB: add OHCI/EHCI OF binding
   5
   6 based on f3bc64d6d1f21c1b92d75f233a37b75d77af6963
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 ---
  10  drivers/usb/Makefile             |    3 ++-
  11  drivers/usb/host/ehci-platform.c |   21 +++++++++++++++++----
  12  drivers/usb/host/ohci-platform.c |   37 +++++++++++++++++++++++++++++++------
  13  3 files changed, 50 insertions(+), 11 deletions(-)
  14
  15 --- a/drivers/usb/Makefile
  16 +++ b/drivers/usb/Makefile
  17 @@ -11,6 +11,8 @@ obj-$(CONFIG_USB_DWC2)                += dwc2/
  18
  19  obj-$(CONFIG_USB_MON)          += mon/
  20
  21 +obj-$(CONFIG_USB_PHY)          += phy/
  22 +
  23  obj-$(CONFIG_PCI)              += host/
  24  obj-$(CONFIG_USB_EHCI_HCD)     += host/
  25  obj-$(CONFIG_USB_ISP116X_HCD)  += host/
  26 @@ -41,7 +43,6 @@ obj-$(CONFIG_USB_TMC)         += class/
  27  obj-$(CONFIG_USB_STORAGE)      += storage/
  28  obj-$(CONFIG_USB)              += storage/
  29
  30 -obj-$(CONFIG_USB_MDC800)       += image/
  31  obj-$(CONFIG_USB_MICROTEK)     += image/
  32
  33  obj-$(CONFIG_USB_SERIAL)       += serial/
  34 --- a/drivers/usb/host/ehci-platform.c
  35 +++ b/drivers/usb/host/ehci-platform.c
  36 @@ -29,6 +29,8 @@
  37  #include <linux/usb.h>
  38  #include <linux/usb/hcd.h>
  39  #include <linux/usb/ehci_pdriver.h>
  40 +#include <linux/usb/phy.h>
  41 +#include <linux/usb/otg.h>
  42
  43  #include "ehci.h"
  44
  45 @@ -124,6 +126,15 @@ static int ehci_platform_probe(struct pl
  46         hcd->rsrc_start = res_mem->start;
  47         hcd->rsrc_len = resource_size(res_mem);
  48
  49 +#ifdef CONFIG_USB_PHY
  50 +       hcd->phy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
  51 +       if (!IS_ERR_OR_NULL(hcd->phy)) {
  52 +               otg_set_host(hcd->phy->otg,
  53 +                               &hcd->self);
  54 +               usb_phy_init(hcd->phy);
  55 +       }
  56 +#endif
  57 +
  58         hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
  59         if (IS_ERR(hcd->regs)) {
  60                 err = PTR_ERR(hcd->regs);
  61 @@ -161,6 +172,9 @@ static int ehci_platform_remove(struct p
  62         if (pdata == &ehci_platform_defaults)
  63                 dev->dev.platform_data = NULL;
  64
  65 +       if (pdata == &ehci_platform_defaults)
  66 +               dev->dev.platform_data = NULL;
  67 +
  68         return 0;
  69  }
  70
  71 @@ -205,9 +219,8 @@ static int ehci_platform_resume(struct d
  72  #define ehci_platform_resume   NULL
  73  #endif /* CONFIG_PM */
  74
  75 -static const struct of_device_id vt8500_ehci_ids[] = {
  76 -       { .compatible = "via,vt8500-ehci", },
  77 -       { .compatible = "wm,prizm-ehci", },
  78 +static const struct of_device_id ralink_ehci_ids[] = {
  79 +       { .compatible = "ralink,rt3xxx-ehci", },
  80         {}
  81  };
  82
  83 @@ -231,7 +244,7 @@ static struct platform_driver ehci_platf
  84                 .owner  = THIS_MODULE,
  85                 .name   = "ehci-platform",
  86                 .pm     = &ehci_platform_pm_ops,
  87 -               .of_match_table = vt8500_ehci_ids,
  88 +               .of_match_table = ralink_ehci_ids,
  89         }
  90  };
  91
  92 --- a/drivers/usb/host/ohci-platform.c
  93 +++ b/drivers/usb/host/ohci-platform.c
  94 @@ -22,18 +22,22 @@
  95  #include <linux/platform_device.h>
  96  #include <linux/usb/ohci_pdriver.h>
  97  #include <linux/usb.h>
  98 +#include <linux/usb/phy.h>
  99  #include <linux/usb/hcd.h>
 100 +#include <linux/dma-mapping.h>
 101 +#include <linux/of.h>
 102
 103  #include "ohci.h"
 104
 105  #define DRIVER_DESC "OHCI generic platform driver"
 106
 107 +static struct usb_ohci_pdata ohci_platform_defaults;
 108  static const char hcd_name[] = "ohci-platform";
 109
 110  static int ohci_platform_reset(struct usb_hcd *hcd)
 111  {
 112         struct platform_device *pdev = to_platform_device(hcd->self.controller);
 113 -       struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev);
 114 +       struct usb_ohci_pdata *pdata = dev_get_platdata(&pdev->dev);;
 115         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
 116
 117         if (pdata->big_endian_desc)
 118 @@ -63,11 +67,18 @@ static int ohci_platform_probe(struct pl
 119         int irq;
 120         int err = -ENOMEM;
 121
 122 -       if (!pdata) {
 123 -               WARN_ON(1);
 124 -               return -ENODEV;
 125 -       }
 126 +       /*
 127 +        * use reasonable defaults so platforms don't have to provide these.
 128 +        * with DT probing on ARM, none of these are set.
 129 +        */
 130 +       if (!dev->dev.platform_data)
 131 +               dev->dev.platform_data = &ohci_platform_defaults;
 132 +       if (!dev->dev.dma_mask)
 133 +               dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
 134 +       if (!dev->dev.coherent_dma_mask)
 135 +               dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 136
 137 +       pdata = dev->dev.platform_data;
 138         if (usb_disabled())
 139                 return -ENODEV;
 140
 141 @@ -99,6 +110,12 @@ static int ohci_platform_probe(struct pl
 142         hcd->rsrc_start = res_mem->start;
 143         hcd->rsrc_len = resource_size(res_mem);
 144
 145 +#ifdef CONFIG_USB_PHY
 146 +       hcd->phy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
 147 +       if (!IS_ERR_OR_NULL(hcd->phy))
 148 +               usb_phy_init(hcd->phy);
 149 +#endif
 150 +
 151         hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
 152         if (IS_ERR(hcd->regs)) {
 153                 err = PTR_ERR(hcd->regs);
 154 @@ -134,6 +151,9 @@ static int ohci_platform_remove(struct p
 155         if (pdata->power_off)
 156                 pdata->power_off(dev);
 157
 158 +       if (pdata == &ohci_platform_defaults)
 159 +               dev->dev.platform_data = NULL;
 160 +
 161         return 0;
 162  }
 163
 164 @@ -180,6 +200,11 @@ static int ohci_platform_resume(struct d
 165  #define ohci_platform_resume   NULL
 166  #endif /* CONFIG_PM */
 167
 168 +static const struct of_device_id ralink_ohci_ids[] = {
 169 +       { .compatible = "ralink,rt3xxx-ohci", },
 170 +       {}
 171 +};
 172 +
 173  static const struct platform_device_id ohci_platform_table[] = {
 174         { "ohci-platform", 0 },
 175         { }
 176 @@ -200,6 +225,7 @@ static struct platform_driver ohci_platf
 177                 .owner  = THIS_MODULE,
 178                 .name   = "ohci-platform",
 179                 .pm     = &ohci_platform_pm_ops,
 180 +               .of_match_table = of_match_ptr(ralink_ohci_ids),
 181         }
 182  };
 183