target/linux/brcm63xx/patches-3.2/010-add_bcm63xx_ohci_controller.patch

   1 Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
   2 ---
   3  drivers/usb/host/ohci-bcm63xx.c |  166 +++++++++++++++++++++++++++++++++++++++
   4  drivers/usb/host/ohci-hcd.c     |    5 +
   5  drivers/usb/host/ohci.h         |    2 +-
   6  3 files changed, 172 insertions(+), 1 deletions(-)
   7  create mode 100644 drivers/usb/host/ohci-bcm63xx.c
   8
   9 --- /dev/null
  10 +++ b/drivers/usb/host/ohci-bcm63xx.c
  11 @@ -0,0 +1,166 @@
  12 +/*
  13 + * This file is subject to the terms and conditions of the GNU General Public
  14 + * License.  See the file "COPYING" in the main directory of this archive
  15 + * for more details.
  16 + *
  17 + * Copyright (C) 2010 Maxime Bizon <mbizon@freebox.fr>
  18 + */
  19 +
  20 +#include <linux/init.h>
  21 +#include <linux/clk.h>
  22 +#include <linux/platform_device.h>
  23 +#include <bcm63xx_cpu.h>
  24 +#include <bcm63xx_regs.h>
  25 +#include <bcm63xx_io.h>
  26 +
  27 +static struct clk *usb_host_clock;
  28 +
  29 +static int __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
  30 +{
  31 +       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  32 +       int ret;
  33 +
  34 +        /*
  35 +         * port 2 can be shared with USB slave, but all boards seem to
  36 +         * have only one host port populated, so we can hardcode it
  37 +         */
  38 +       ohci->num_ports = 1;
  39 +
  40 +       ret = ohci_init(ohci);
  41 +       if (ret < 0)
  42 +               return ret;
  43 +
  44 +       ret = ohci_run(ohci);
  45 +       if (ret < 0) {
  46 +               err("can't start %s", hcd->self.bus_name);
  47 +               ohci_stop(hcd);
  48 +               return ret;
  49 +       }
  50 +       return 0;
  51 +}
  52 +
  53 +static const struct hc_driver ohci_bcm63xx_hc_driver = {
  54 +       .description =          hcd_name,
  55 +       .product_desc =         "BCM63XX integrated OHCI controller",
  56 +       .hcd_priv_size =        sizeof(struct ohci_hcd),
  57 +
  58 +       .irq =                  ohci_irq,
  59 +       .flags =                HCD_USB11 | HCD_MEMORY,
  60 +       .start =                ohci_bcm63xx_start,
  61 +       .stop =                 ohci_stop,
  62 +       .shutdown =             ohci_shutdown,
  63 +       .urb_enqueue =          ohci_urb_enqueue,
  64 +       .urb_dequeue =          ohci_urb_dequeue,
  65 +       .endpoint_disable =     ohci_endpoint_disable,
  66 +       .get_frame_number =     ohci_get_frame,
  67 +       .hub_status_data =      ohci_hub_status_data,
  68 +       .hub_control =          ohci_hub_control,
  69 +       .start_port_reset =     ohci_start_port_reset,
  70 +};
  71 +
  72 +static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
  73 +{
  74 +       struct resource *res_mem;
  75 +       struct usb_hcd *hcd;
  76 +       struct ohci_hcd *ohci;
  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 +       if (BCMCPU_IS_6348()) {
  86 +               struct clk *clk;
  87 +               /* enable USB host clock */
  88 +               clk = clk_get(&pdev->dev, "usbh");
  89 +               if (IS_ERR(clk))
  90 +                       return -ENODEV;
  91 +
  92 +               clk_enable(clk);
  93 +               usb_host_clock = clk;
  94 +               bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
  95 +
  96 +       } else if (BCMCPU_IS_6358()) {
  97 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
  98 +               reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
  99 +               reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
 100 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
 101 +               /*
 102 +                * The magic value comes for the original vendor BSP
 103 +                * and is needed for USB to work. Datasheet does not
 104 +                * help, so the magic value is used as-is.
 105 +                */
 106 +               bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG);
 107 +       } else
 108 +               return 0;
 109 +
 110 +       hcd = usb_create_hcd(&ohci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
 111 +       if (!hcd)
 112 +               return -ENOMEM;
 113 +       hcd->rsrc_start = res_mem->start;
 114 +       hcd->rsrc_len = res_mem->end - res_mem->start + 1;
 115 +
 116 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 117 +               pr_debug("request_mem_region failed\n");
 118 +               ret = -EBUSY;
 119 +               goto out;
 120 +       }
 121 +
 122 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 123 +       if (!hcd->regs) {
 124 +               pr_debug("ioremap failed\n");
 125 +               ret = -EIO;
 126 +               goto out1;
 127 +       }
 128 +
 129 +       ohci = hcd_to_ohci(hcd);
 130 +       ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
 131 +               OHCI_QUIRK_FRAME_NO;
 132 +       ohci_hcd_init(ohci);
 133 +
 134 +       ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 135 +       if (ret)
 136 +               goto out2;
 137 +
 138 +       platform_set_drvdata(pdev, hcd);
 139 +       return 0;
 140 +
 141 +out2:
 142 +       iounmap(hcd->regs);
 143 +out1:
 144 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 145 +out:
 146 +       usb_put_hcd(hcd);
 147 +       return ret;
 148 +}
 149 +
 150 +static int __devexit ohci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
 151 +{
 152 +       struct usb_hcd *hcd;
 153 +
 154 +       hcd = platform_get_drvdata(pdev);
 155 +       usb_remove_hcd(hcd);
 156 +       iounmap(hcd->regs);
 157 +       usb_put_hcd(hcd);
 158 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 159 +       if (usb_host_clock) {
 160 +               clk_disable(usb_host_clock);
 161 +               clk_put(usb_host_clock);
 162 +       }
 163 +       platform_set_drvdata(pdev, NULL);
 164 +       return 0;
 165 +}
 166 +
 167 +static struct platform_driver ohci_hcd_bcm63xx_driver = {
 168 +       .probe          = ohci_hcd_bcm63xx_drv_probe,
 169 +       .remove         = __devexit_p(ohci_hcd_bcm63xx_drv_remove),
 170 +       .shutdown       = usb_hcd_platform_shutdown,
 171 +       .driver         = {
 172 +               .name   = "bcm63xx_ohci",
 173 +               .owner  = THIS_MODULE,
 174 +       },
 175 +};
 176 +
 177 +MODULE_ALIAS("platform:bcm63xx_ohci");
 178 --- a/drivers/usb/host/ohci-hcd.c
 179 +++ b/drivers/usb/host/ohci-hcd.c
 180 @@ -1055,6 +1055,11 @@ MODULE_LICENSE ("GPL");
 181  #define PLATFORM_DRIVER                ohci_hcd_da8xx_driver
 182  #endif
 183
 184 +#ifdef CONFIG_BCM63XX
 185 +#include "ohci-bcm63xx.c"
 186 +#define PLATFORM_DRIVER                ohci_hcd_bcm63xx_driver
 187 +#endif
 188 +
 189  #ifdef CONFIG_USB_OHCI_SH
 190  #include "ohci-sh.c"
 191  #define PLATFORM_DRIVER                ohci_hcd_sh_driver
 192 --- a/drivers/usb/host/ohci.h
 193 +++ b/drivers/usb/host/ohci.h
 194 @@ -645,7 +645,7 @@ static inline u32 hc32_to_cpup (const st
 195   * some big-endian SOC implementations.  Same thing happens with PSW access.
 196   */
 197
 198 -#ifdef CONFIG_PPC_MPC52xx
 199 +#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX)
 200  #define big_endian_frame_no_quirk(ohci)        (ohci->flags & OHCI_QUIRK_FRAME_NO)
 201  #else
 202  #define big_endian_frame_no_quirk(ohci)        0