target/linux/ramips/patches-3.9/0161-USB-add-OHCI-EHCI-OF-binding.patch

   1 From 9a15efea2e55327cf7c813da64589509f9c40786 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Thu, 16 May 2013 23:11:45 +0200
   4 Subject: [PATCH 161/164] USB: add OHCI/EHCI OF binding
   5
   6 based on f3bc64d6d1f21c1b92d75f233a37b75d77af6963
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 ---
  10  arch/mips/ralink/Kconfig         |    2 ++
  11  drivers/usb/Makefile             |    3 ++-
  12  drivers/usb/host/ehci-platform.c |   44 ++++++++++++++++++++++++++++++++------
  13  drivers/usb/host/ohci-platform.c |   37 +++++++++++++++++++++++++++-----
  14  4 files changed, 74 insertions(+), 12 deletions(-)
  15
  16 --- a/arch/mips/ralink/Kconfig
  17 +++ b/arch/mips/ralink/Kconfig
  18 @@ -27,6 +27,8 @@ choice
  19                 bool "MT7620"
  20                 select CLKEVT_RT3352
  21                 select HW_HAS_PCI
  22 +               select USB_ARCH_HAS_OHCI
  23 +               select USB_ARCH_HAS_EHCI
  24
  25  endchoice
  26
  27 --- a/drivers/usb/Makefile
  28 +++ b/drivers/usb/Makefile
  29 @@ -12,6 +12,8 @@ obj-$(CONFIG_USB_DWC3)                += dwc3/
  30
  31  obj-$(CONFIG_USB_MON)          += mon/
  32
  33 +obj-$(CONFIG_USB_OTG_UTILS)    += phy/
  34 +
  35  obj-$(CONFIG_PCI)              += host/
  36  obj-$(CONFIG_USB_EHCI_HCD)     += host/
  37  obj-$(CONFIG_USB_ISP116X_HCD)  += host/
  38 @@ -46,7 +48,6 @@ obj-$(CONFIG_USB_MICROTEK)    += image/
  39  obj-$(CONFIG_USB_SERIAL)       += serial/
  40
  41  obj-$(CONFIG_USB)              += misc/
  42 -obj-$(CONFIG_USB_OTG_UTILS)    += phy/
  43  obj-$(CONFIG_EARLY_PRINTK_DBGP)        += early/
  44
  45  obj-$(CONFIG_USB_ATM)          += atm/
  46 --- a/drivers/usb/host/ehci-platform.c
  47 +++ b/drivers/usb/host/ehci-platform.c
  48 @@ -18,14 +18,18 @@
  49   *
  50   * Licensed under the GNU/GPL. See COPYING for details.
  51   */
  52 +#include <linux/dma-mapping.h>
  53  #include <linux/err.h>
  54  #include <linux/kernel.h>
  55  #include <linux/hrtimer.h>
  56  #include <linux/io.h>
  57  #include <linux/module.h>
  58 +#include <linux/of.h>
  59  #include <linux/platform_device.h>
  60  #include <linux/usb.h>
  61  #include <linux/usb/hcd.h>
  62 +#include <linux/usb/otg.h>
  63 +#include <linux/usb/phy.h>
  64  #include <linux/usb/ehci_pdriver.h>
  65
  66  #include "ehci.h"
  67 @@ -63,22 +67,32 @@ static const struct ehci_driver_override
  68         .reset =        ehci_platform_reset,
  69  };
  70
  71 +static struct usb_ehci_pdata ehci_platform_defaults;
  72 +
  73  static int ehci_platform_probe(struct platform_device *dev)
  74  {
  75         struct usb_hcd *hcd;
  76         struct resource *res_mem;
  77 -       struct usb_ehci_pdata *pdata = dev->dev.platform_data;
  78 +       struct usb_ehci_pdata *pdata;
  79         int irq;
  80         int err = -ENOMEM;
  81
  82 -       if (!pdata) {
  83 -               WARN_ON(1);
  84 -               return -ENODEV;
  85 -       }
  86 -
  87         if (usb_disabled())
  88                 return -ENODEV;
  89
  90 +       /*
  91 +        * use reasonable defaults so platforms don't have to provide these.
  92 +        * with DT probing on ARM, none of these are set.
  93 +        */
  94 +       if (!dev->dev.platform_data)
  95 +               dev->dev.platform_data = &ehci_platform_defaults;
  96 +       if (!dev->dev.dma_mask)
  97 +               dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
  98 +       if (!dev->dev.coherent_dma_mask)
  99 +               dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 100 +
 101 +       pdata = dev->dev.platform_data;
 102 +
 103         irq = platform_get_irq(dev, 0);
 104         if (irq < 0) {
 105                 dev_err(&dev->dev, "no irq provided");
 106 @@ -106,6 +120,15 @@ static int ehci_platform_probe(struct pl
 107         hcd->rsrc_start = res_mem->start;
 108         hcd->rsrc_len = resource_size(res_mem);
 109
 110 +#ifdef CONFIG_USB_OTG_UTILS
 111 +       hcd->phy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
 112 +       if (!IS_ERR_OR_NULL(hcd->phy)) {
 113 +               otg_set_host(hcd->phy->otg,
 114 +                               &hcd->self);
 115 +               usb_phy_init(hcd->phy);
 116 +       }
 117 +#endif
 118 +
 119         hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
 120         if (IS_ERR(hcd->regs)) {
 121                 err = PTR_ERR(hcd->regs);
 122 @@ -140,6 +163,9 @@ static int ehci_platform_remove(struct p
 123         if (pdata->power_off)
 124                 pdata->power_off(dev);
 125
 126 +       if (pdata == &ehci_platform_defaults)
 127 +               dev->dev.platform_data = NULL;
 128 +
 129         return 0;
 130  }
 131
 132 @@ -184,6 +210,11 @@ static int ehci_platform_resume(struct d
 133  #define ehci_platform_resume   NULL
 134  #endif /* CONFIG_PM */
 135
 136 +static const struct of_device_id ralink_ehci_ids[] = {
 137 +       { .compatible = "ralink,rt3xxx-ehci", },
 138 +       {}
 139 +};
 140 +
 141  static const struct platform_device_id ehci_platform_table[] = {
 142         { "ehci-platform", 0 },
 143         { }
 144 @@ -204,6 +235,7 @@ static struct platform_driver ehci_platf
 145                 .owner  = THIS_MODULE,
 146                 .name   = "ehci-platform",
 147                 .pm     = &ehci_platform_pm_ops,
 148 +               .of_match_table = of_match_ptr(ralink_ehci_ids),
 149         }
 150  };
 151
 152 --- a/drivers/usb/host/ohci-platform.c
 153 +++ b/drivers/usb/host/ohci-platform.c
 154 @@ -16,6 +16,10 @@
 155  #include <linux/err.h>
 156  #include <linux/platform_device.h>
 157  #include <linux/usb/ohci_pdriver.h>
 158 +#include <linux/dma-mapping.h>
 159 +#include <linux/of.h>
 160 +
 161 +static struct usb_ohci_pdata ohci_platform_defaults;
 162
 163  static int ohci_platform_reset(struct usb_hcd *hcd)
 164  {
 165 @@ -88,14 +92,22 @@ static int ohci_platform_probe(struct pl
 166  {
 167         struct usb_hcd *hcd;
 168         struct resource *res_mem;
 169 -       struct usb_ohci_pdata *pdata = dev->dev.platform_data;
 170 +       struct usb_ohci_pdata *pdata;
 171         int irq;
 172         int err = -ENOMEM;
 173
 174 -       if (!pdata) {
 175 -               WARN_ON(1);
 176 -               return -ENODEV;
 177 -       }
 178 +       /*
 179 +        * use reasonable defaults so platforms don't have to provide these.
 180 +        * with DT probing on ARM, none of these are set.
 181 +        */
 182 +       if (!dev->dev.platform_data)
 183 +               dev->dev.platform_data = &ohci_platform_defaults;
 184 +       if (!dev->dev.dma_mask)
 185 +               dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
 186 +       if (!dev->dev.coherent_dma_mask)
 187 +               dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 188 +
 189 +       pdata = dev->dev.platform_data;
 190
 191         if (usb_disabled())
 192                 return -ENODEV;
 193 @@ -128,6 +140,12 @@ static int ohci_platform_probe(struct pl
 194         hcd->rsrc_start = res_mem->start;
 195         hcd->rsrc_len = resource_size(res_mem);
 196
 197 +#ifdef CONFIG_USB_OTG_UTILS
 198 +       hcd->phy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
 199 +       if (!IS_ERR_OR_NULL(hcd->phy))
 200 +               usb_phy_init(hcd->phy);
 201 +#endif
 202 +
 203         hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
 204         if (IS_ERR(hcd->regs)) {
 205                 err = PTR_ERR(hcd->regs);
 206 @@ -162,6 +180,9 @@ static int ohci_platform_remove(struct p
 207         if (pdata->power_off)
 208                 pdata->power_off(dev);
 209
 210 +       if (pdata == &ohci_platform_defaults)
 211 +               dev->dev.platform_data = NULL;
 212 +
 213         return 0;
 214  }
 215
 216 @@ -201,6 +222,11 @@ static int ohci_platform_resume(struct d
 217  #define ohci_platform_resume   NULL
 218  #endif /* CONFIG_PM */
 219
 220 +static const struct of_device_id ralink_ohci_ids[] = {
 221 +       { .compatible = "ralink,rt3xxx-ohci", },
 222 +       {}
 223 +};
 224 +
 225  static const struct platform_device_id ohci_platform_table[] = {
 226         { "ohci-platform", 0 },
 227         { }
 228 @@ -221,5 +247,6 @@ static struct platform_driver ohci_platf
 229                 .owner  = THIS_MODULE,
 230                 .name   = "ohci-platform",
 231                 .pm     = &ohci_platform_pm_ops,
 232 +               .of_match_table = of_match_ptr(ralink_ohci_ids),
 233         }
 234  };