target/linux/brcm63xx/patches-3.6/400-ohci-add-driver-for-bcm63xx-integrated-controller.patch

   1 From 7b510c5754d3c46e1287803f51e8ecb177414438 Mon Sep 17 00:00:00 2001
   2 From: Maxime Bizon <mbizon@freebox.fr>
   3 Date: Fri, 10 Jun 2011 19:14:30 +0200
   4 Subject: [PATCH 23/63] ohci: add driver for bcm63xx integrated controller.
   5
   6 ---
   7  drivers/usb/host/Kconfig        |    9 ++
   8  drivers/usb/host/ohci-bcm63xx.c |  175 +++++++++++++++++++++++++++++++++++++++
   9  drivers/usb/host/ohci-hcd.c     |    5 +
  10  drivers/usb/host/ohci.h         |    2 +-
  11  4 files changed, 190 insertions(+), 1 deletions(-)
  12  create mode 100644 drivers/usb/host/ohci-bcm63xx.c
  13
  14 --- a/drivers/usb/host/Kconfig
  15 +++ b/drivers/usb/host/Kconfig
  16 @@ -306,6 +306,15 @@ config USB_OHCI_HCD
  17           To compile this driver as a module, choose M here: the
  18           module will be called ohci-hcd.
  19
  20 +config USB_OHCI_BCM63XX
  21 +       bool "Support for Broadcom 63xx on-chip OHCI USB controller"
  22 +       depends on USB_OHCI_HCD && BCM63XX
  23 +       select USB_OHCI_BIG_ENDIAN_DESC
  24 +       select USB_OHCI_BIG_ENDIAN_MMIO
  25 +       ---help---
  26 +         Enables support for the on-chip OHCI controller on
  27 +         BCM63XX chips.
  28 +
  29  config USB_OHCI_HCD_OMAP1
  30         bool "OHCI support for OMAP1/2 chips"
  31         depends on USB_OHCI_HCD && ARCH_OMAP1
  32 --- /dev/null
  33 +++ b/drivers/usb/host/ohci-bcm63xx.c
  34 @@ -0,0 +1,175 @@
  35 +/*
  36 + * This file is subject to the terms and conditions of the GNU General Public
  37 + * License.  See the file "COPYING" in the main directory of this archive
  38 + * for more details.
  39 + *
  40 + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
  41 + */
  42 +
  43 +#include <linux/init.h>
  44 +#include <linux/clk.h>
  45 +#include <linux/platform_device.h>
  46 +#include <bcm63xx_cpu.h>
  47 +#include <bcm63xx_regs.h>
  48 +#include <bcm63xx_io.h>
  49 +
  50 +static struct clk *usb_host_clock;
  51 +
  52 +static int __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
  53 +{
  54 +       struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  55 +       int ret;
  56 +
  57 +       ohci->num_ports = 1;
  58 +
  59 +       ret = ohci_init(ohci);
  60 +       if (ret < 0)
  61 +               return ret;
  62 +
  63 +       /* FIXME: autodetected port 2 is shared with USB slave */
  64 +
  65 +       ret = ohci_run(ohci);
  66 +       if (ret < 0) {
  67 +               err("can't start %s", hcd->self.bus_name);
  68 +               ohci_stop(hcd);
  69 +               return ret;
  70 +       }
  71 +       return 0;
  72 +}
  73 +
  74 +static const struct hc_driver ohci_bcm63xx_hc_driver = {
  75 +       .description =          hcd_name,
  76 +       .product_desc =         "BCM63XX integrated OHCI controller",
  77 +       .hcd_priv_size =        sizeof(struct ohci_hcd),
  78 +
  79 +       .irq =                  ohci_irq,
  80 +       .flags =                HCD_USB11 | HCD_MEMORY,
  81 +       .start =                ohci_bcm63xx_start,
  82 +       .stop =                 ohci_stop,
  83 +       .shutdown =             ohci_shutdown,
  84 +       .urb_enqueue =          ohci_urb_enqueue,
  85 +       .urb_dequeue =          ohci_urb_dequeue,
  86 +       .endpoint_disable =     ohci_endpoint_disable,
  87 +       .get_frame_number =     ohci_get_frame,
  88 +       .hub_status_data =      ohci_hub_status_data,
  89 +       .hub_control =          ohci_hub_control,
  90 +       .start_port_reset =     ohci_start_port_reset,
  91 +};
  92 +
  93 +static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
  94 +{
  95 +       struct resource *res_mem;
  96 +       struct usb_hcd *hcd;
  97 +       struct ohci_hcd *ohci;
  98 +       struct clk *clk;
  99 +       u32 reg;
 100 +       int ret, irq;
 101 +
 102 +       res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 103 +       irq = platform_get_irq(pdev, 0);
 104 +       if (!res_mem || irq < 0)
 105 +               return -ENODEV;
 106 +
 107 +       /* enable USB host clock */
 108 +       clk = clk_get(&pdev->dev, "usbh");
 109 +       if (IS_ERR(clk))
 110 +               return -ENODEV;
 111 +
 112 +       clk_enable(clk);
 113 +       usb_host_clock = clk;
 114 +       msleep(100);
 115 +
 116 +       if (BCMCPU_IS_6348())
 117 +               bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
 118 +       else if (BCMCPU_IS_6358()) {
 119 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
 120 +               reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
 121 +               reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
 122 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
 123 +               /*
 124 +                * The magic value comes for the original vendor BSP
 125 +                * and is needed for USB to work. Datasheet does not
 126 +                * help, so the magic value is used as-is.
 127 +                */
 128 +               bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
 129 +                               USBH_PRIV_TEST_6358_REG);
 130 +
 131 +       } else if (BCMCPU_IS_6368()) {
 132 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
 133 +               reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
 134 +               reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK;
 135 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
 136 +
 137 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
 138 +               reg |= USBH_PRIV_SETUP_IOC_MASK;
 139 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
 140 +       }
 141 +
 142 +       hcd = usb_create_hcd(&ohci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
 143 +       if (!hcd)
 144 +               return -ENOMEM;
 145 +       hcd->rsrc_start = res_mem->start;
 146 +       hcd->rsrc_len = res_mem->end - res_mem->start + 1;
 147 +
 148 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 149 +               pr_debug("request_mem_region failed\n");
 150 +               ret = -EBUSY;
 151 +               goto out;
 152 +       }
 153 +
 154 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 155 +       if (!hcd->regs) {
 156 +               pr_debug("ioremap failed\n");
 157 +               ret = -EIO;
 158 +               goto out1;
 159 +       }
 160 +
 161 +       ohci = hcd_to_ohci(hcd);
 162 +       ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
 163 +               OHCI_QUIRK_FRAME_NO;
 164 +       ohci_hcd_init(ohci);
 165 +
 166 +       ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 167 +       if (ret)
 168 +               goto out2;
 169 +
 170 +       platform_set_drvdata(pdev, hcd);
 171 +       return 0;
 172 +
 173 +out2:
 174 +       iounmap(hcd->regs);
 175 +out1:
 176 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 177 +out:
 178 +       usb_put_hcd(hcd);
 179 +       return ret;
 180 +}
 181 +
 182 +static int __devexit ohci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
 183 +{
 184 +       struct usb_hcd *hcd;
 185 +
 186 +       hcd = platform_get_drvdata(pdev);
 187 +       usb_remove_hcd(hcd);
 188 +       iounmap(hcd->regs);
 189 +       usb_put_hcd(hcd);
 190 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 191 +       if (usb_host_clock) {
 192 +               clk_disable(usb_host_clock);
 193 +               clk_put(usb_host_clock);
 194 +       }
 195 +       platform_set_drvdata(pdev, NULL);
 196 +       return 0;
 197 +}
 198 +
 199 +static struct platform_driver ohci_hcd_bcm63xx_driver = {
 200 +       .probe          = ohci_hcd_bcm63xx_drv_probe,
 201 +       .remove         = __devexit_p(ohci_hcd_bcm63xx_drv_remove),
 202 +       .shutdown       = usb_hcd_platform_shutdown,
 203 +       .driver         = {
 204 +               .name   = "bcm63xx_ohci",
 205 +               .owner  = THIS_MODULE,
 206 +       },
 207 +};
 208 +
 209 +MODULE_ALIAS("platform:bcm63xx_ohci");
 210 --- a/drivers/usb/host/ohci-hcd.c
 211 +++ b/drivers/usb/host/ohci-hcd.c
 212 @@ -1120,6 +1120,11 @@ MODULE_LICENSE ("GPL");
 213  #define PLATFORM_DRIVER                ohci_platform_driver
 214  #endif
 215
 216 +#ifdef CONFIG_USB_OHCI_BCM63XX
 217 +#include "ohci-bcm63xx.c"
 218 +#define PLATFORM_DRIVER                ohci_hcd_bcm63xx_driver
 219 +#endif
 220 +
 221  #if    !defined(PCI_DRIVER) &&         \
 222         !defined(PLATFORM_DRIVER) &&    \
 223         !defined(OMAP1_PLATFORM_DRIVER) &&      \
 224 --- a/drivers/usb/host/ohci.h
 225 +++ b/drivers/usb/host/ohci.h
 226 @@ -647,7 +647,7 @@ static inline u32 hc32_to_cpup (const st
 227   * some big-endian SOC implementations.  Same thing happens with PSW access.
 228   */
 229
 230 -#ifdef CONFIG_PPC_MPC52xx
 231 +#if defined(CONFIG_PPC_MPC52xx) || defined(CONFIG_BCM63XX)
 232  #define big_endian_frame_no_quirk(ohci)        (ohci->flags & OHCI_QUIRK_FRAME_NO)
 233  #else
 234  #define big_endian_frame_no_quirk(ohci)        0