target/linux/brcm63xx/patches-2.6.32/010-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 diff --git a/drivers/usb/host/ohci-bcm63xx.c b/drivers/usb/host/ohci-bcm63xx.c
  10 new file mode 100644
  11 index 0000000..c9bccec
  12 --- /dev/null
  13 +++ b/drivers/usb/host/ohci-bcm63xx.c
  14 @@ -0,0 +1,166 @@
  15 +/*
  16 + * This file is subject to the terms and conditions of the GNU General Public
  17 + * License.  See the file "COPYING" in the main directory of this archive
  18 + * for more details.
  19 + *
  20 + * Copyright (C) 2010 Maxime Bizon <mbizon@freebox.fr>
  21 + */
  22 +
  23 +#include <linux/init.h>
  24 +#include <linux/clk.h>
  25 +#include <linux/platform_device.h>
  26 +#include <bcm63xx_cpu.h>
  27 +#include <bcm63xx_regs.h>
  28 +#include <bcm63xx_io.h>
  29 +
  30 +static struct clk *usb_host_clock;
  31 +
  32 +static int __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
  33 +{
  34 +       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  35 +       int ret;
  36 +
  37 +        /*
  38 +         * port 2 can be shared with USB slave, but all boards seem to
  39 +         * have only one host port populated, so we can hardcode it
  40 +         */
  41 +       ohci->num_ports = 1;
  42 +
  43 +       ret = ohci_init(ohci);
  44 +       if (ret < 0)
  45 +               return ret;
  46 +
  47 +       ret = ohci_run(ohci);
  48 +       if (ret < 0) {
  49 +               err("can't start %s", hcd->self.bus_name);
  50 +               ohci_stop(hcd);
  51 +               return ret;
  52 +       }
  53 +       return 0;
  54 +}
  55 +
  56 +static const struct hc_driver ohci_bcm63xx_hc_driver = {
  57 +       .description =          hcd_name,
  58 +       .product_desc =         "BCM63XX integrated OHCI controller",
  59 +       .hcd_priv_size =        sizeof(struct ohci_hcd),
  60 +
  61 +       .irq =                  ohci_irq,
  62 +       .flags =                HCD_USB11 | HCD_MEMORY,
  63 +       .start =                ohci_bcm63xx_start,
  64 +       .stop =                 ohci_stop,
  65 +       .shutdown =             ohci_shutdown,
  66 +       .urb_enqueue =          ohci_urb_enqueue,
  67 +       .urb_dequeue =          ohci_urb_dequeue,
  68 +       .endpoint_disable =     ohci_endpoint_disable,
  69 +       .get_frame_number =     ohci_get_frame,
  70 +       .hub_status_data =      ohci_hub_status_data,
  71 +       .hub_control =          ohci_hub_control,
  72 +       .start_port_reset =     ohci_start_port_reset,
  73 +};
  74 +
  75 +static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
  76 +{
  77 +       struct resource *res_mem;
  78 +       struct usb_hcd *hcd;
  79 +       struct ohci_hcd *ohci;
  80 +       u32 reg;
  81 +       int ret, irq;
  82 +
  83 +       res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  84 +       irq = platform_get_irq(pdev, 0);
  85 +       if (!res_mem || irq < 0)
  86 +               return -ENODEV;
  87 +
  88 +       if (BCMCPU_IS_6348()) {
  89 +               struct clk *clk;
  90 +               /* enable USB host clock */
  91 +               clk = clk_get(&pdev->dev, "usbh");
  92 +               if (IS_ERR(clk))
  93 +                       return -ENODEV;
  94 +
  95 +               clk_enable(clk);
  96 +               usb_host_clock = clk;
  97 +               bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
  98 +
  99 +       } else if (BCMCPU_IS_6358()) {
 100 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
 101 +               reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
 102 +               reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
 103 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
 104 +               /*
 105 +                * The magic value comes for the original vendor BSP
 106 +                * and is needed for USB to work. Datasheet does not
 107 +                * help, so the magic value is used as-is.
 108 +                */
 109 +               bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG);
 110 +       } else
 111 +               return 0;
 112 +
 113 +       hcd = usb_create_hcd(&ohci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
 114 +       if (!hcd)
 115 +               return -ENOMEM;
 116 +       hcd->rsrc_start = res_mem->start;
 117 +       hcd->rsrc_len = res_mem->end - res_mem->start + 1;
 118 +
 119 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 120 +               pr_debug("request_mem_region failed\n");
 121 +               ret = -EBUSY;
 122 +               goto out;
 123 +       }
 124 +
 125 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 126 +       if (!hcd->regs) {
 127 +               pr_debug("ioremap failed\n");
 128 +               ret = -EIO;
 129 +               goto out1;
 130 +       }
 131 +
 132 +       ohci = hcd_to_ohci(hcd);
 133 +       ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
 134 +               OHCI_QUIRK_FRAME_NO;
 135 +       ohci_hcd_init(ohci);
 136 +
 137 +       ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 138 +       if (ret)
 139 +               goto out2;
 140 +
 141 +       platform_set_drvdata(pdev, hcd);
 142 +       return 0;
 143 +
 144 +out2:
 145 +       iounmap(hcd->regs);
 146 +out1:
 147 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 148 +out:
 149 +       usb_put_hcd(hcd);
 150 +       return ret;
 151 +}
 152 +
 153 +static int __devexit ohci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
 154 +{
 155 +       struct usb_hcd *hcd;
 156 +
 157 +       hcd = platform_get_drvdata(pdev);
 158 +       usb_remove_hcd(hcd);
 159 +       iounmap(hcd->regs);
 160 +       usb_put_hcd(hcd);
 161 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 162 +       if (usb_host_clock) {
 163 +               clk_disable(usb_host_clock);
 164 +               clk_put(usb_host_clock);
 165 +       }
 166 +       platform_set_drvdata(pdev, NULL);
 167 +       return 0;
 168 +}
 169 +
 170 +static struct platform_driver ohci_hcd_bcm63xx_driver = {
 171 +       .probe          = ohci_hcd_bcm63xx_drv_probe,
 172 +       .remove         = __devexit_p(ohci_hcd_bcm63xx_drv_remove),
 173 +       .shutdown       = usb_hcd_platform_shutdown,
 174 +       .driver         = {
 175 +               .name   = "bcm63xx_ohci",
 176 +               .owner  = THIS_MODULE,
 177 +       },
 178 +};
 179 +
 180 +MODULE_ALIAS("platform:bcm63xx_ohci");
 181 diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
 182 index 24eb747..1c82a60 100644
 183 --- a/drivers/usb/host/ohci-hcd.c
 184 +++ b/drivers/usb/host/ohci-hcd.c
 185 @@ -1051,6 +1051,11 @@ MODULE_LICENSE ("GPL");
 186  #define PLATFORM_DRIVER                usb_hcd_pnx4008_driver
 187  #endif
 188
 189 +#ifdef CONFIG_BCM63XX
 190 +#include "ohci-bcm63xx.c"
 191 +#define PLATFORM_DRIVER                ohci_hcd_bcm63xx_driver
 192 +#endif
 193 +
 194  #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
 195      defined(CONFIG_CPU_SUBTYPE_SH7721) || \
 196      defined(CONFIG_CPU_SUBTYPE_SH7763) || \
 197 diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
 198 index 5bf15fe..3c54d3e 100644
 199 --- a/drivers/usb/host/ohci.h
 200 +++ b/drivers/usb/host/ohci.h
 201 @@ -655,7 +655,7 @@ static inline u32 hc32_to_cpup (const struct ohci_hcd *ohci, const __hc32 *x)
 202   * some big-endian SOC implementations.  Same thing happens with PSW access.
 203   */
 204
 205 -#ifdef CONFIG_PPC_MPC52xx
 206 +#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX)
 207  #define big_endian_frame_no_quirk(ohci)        (ohci->flags & OHCI_QUIRK_FRAME_NO)
 208  #else
 209  #define big_endian_frame_no_quirk(ohci)        0
 210 --
 211 1.6.3.3
 212
 213