target/linux/brcm63xx/patches-3.3/402-ehci-add-driver-for-bcm63xx-integrated-controller.patch

   1 From db58271d5152aa1d3894fdef13ca04379139d5d9 Mon Sep 17 00:00:00 2001
   2 From: Maxime Bizon <mbizon@freebox.fr>
   3 Date: Fri, 10 Jun 2011 19:15:47 +0200
   4 Subject: [PATCH 25/63] ehci: add driver for bcm63xx integrated controller.
   5
   6 ---
   7  drivers/usb/host/Kconfig        |   10 ++-
   8  drivers/usb/host/ehci-bcm63xx.c |  186 +++++++++++++++++++++++++++++++++++++++
   9  drivers/usb/host/ehci-hcd.c     |    5 +
  10  3 files changed, 199 insertions(+), 1 deletions(-)
  11  create mode 100644 drivers/usb/host/ehci-bcm63xx.c
  12
  13 --- a/drivers/usb/host/Kconfig
  14 +++ b/drivers/usb/host/Kconfig
  15 @@ -106,7 +106,7 @@ config USB_EHCI_BIG_ENDIAN_MMIO
  16         depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \
  17                                     ARCH_IXP4XX || XPS_USB_HCD_XILINX || \
  18                                     PPC_MPC512x || CPU_CAVIUM_OCTEON || \
  19 -                                   PMC_MSP || SPARC_LEON)
  20 +                                   PMC_MSP || SPARC_LEON || BCM63XX)
  21         default y
  22
  23  config USB_EHCI_BIG_ENDIAN_DESC
  24 @@ -129,6 +129,14 @@ config XPS_USB_HCD_XILINX
  25  config USB_FSL_MPH_DR_OF
  26         tristate
  27
  28 +config USB_EHCI_BCM63XX
  29 +       bool "Support for Broadcom 63xx on-chip EHCI USB controller"
  30 +       depends on USB_EHCI_HCD && BCM63XX
  31 +       select USB_EHCI_BIG_ENDIAN_MMIO
  32 +       ---help---
  33 +         Enables support for the on-chip EHCI controller on
  34 +         BCM6358 and later chips.
  35 +
  36  config USB_EHCI_FSL
  37         bool "Support for Freescale PPC on-chip EHCI USB controller"
  38         depends on USB_EHCI_HCD && FSL_SOC
  39 --- /dev/null
  40 +++ b/drivers/usb/host/ehci-bcm63xx.c
  41 @@ -0,0 +1,186 @@
  42 +/*
  43 + * This file is subject to the terms and conditions of the GNU General Public
  44 + * License.  See the file "COPYING" in the main directory of this archive
  45 + * for more details.
  46 + *
  47 + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
  48 + */
  49 +
  50 +#include <linux/init.h>
  51 +#include <linux/clk.h>
  52 +#include <linux/platform_device.h>
  53 +#include <bcm63xx_cpu.h>
  54 +#include <bcm63xx_regs.h>
  55 +#include <bcm63xx_io.h>
  56 +
  57 +static struct clk *usb_host_clock;
  58 +
  59 +static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
  60 +{
  61 +       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
  62 +       int retval;
  63 +
  64 +       retval = ehci_halt(ehci);
  65 +       if (retval)
  66 +               return retval;
  67 +
  68 +       retval = ehci_init(hcd);
  69 +       if (retval)
  70 +               return retval;
  71 +
  72 +       ehci_reset(ehci);
  73 +       ehci_port_power(ehci, 0);
  74 +
  75 +       return retval;
  76 +}
  77 +
  78 +
  79 +static const struct hc_driver ehci_bcm63xx_hc_driver = {
  80 +       .description =          hcd_name,
  81 +       .product_desc =         "BCM63XX integrated EHCI controller",
  82 +       .hcd_priv_size =        sizeof(struct ehci_hcd),
  83 +
  84 +       .irq =                  ehci_irq,
  85 +       .flags =                HCD_MEMORY | HCD_USB2,
  86 +
  87 +       .reset =                ehci_bcm63xx_setup,
  88 +       .start =                ehci_run,
  89 +       .stop =                 ehci_stop,
  90 +       .shutdown =             ehci_shutdown,
  91 +
  92 +       .urb_enqueue =          ehci_urb_enqueue,
  93 +       .urb_dequeue =          ehci_urb_dequeue,
  94 +       .endpoint_disable =     ehci_endpoint_disable,
  95 +
  96 +       .get_frame_number =     ehci_get_frame,
  97 +
  98 +       .hub_status_data =      ehci_hub_status_data,
  99 +       .hub_control =          ehci_hub_control,
 100 +       .bus_suspend =          ehci_bus_suspend,
 101 +       .bus_resume =           ehci_bus_resume,
 102 +       .relinquish_port =      ehci_relinquish_port,
 103 +       .port_handed_over =     ehci_port_handed_over,
 104 +};
 105 +
 106 +static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
 107 +{
 108 +       struct resource *res_mem;
 109 +       struct usb_hcd *hcd;
 110 +       struct ehci_hcd *ehci;
 111 +       struct clk *clk;
 112 +       u32 reg;
 113 +       int ret, irq;
 114 +
 115 +       res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 116 +       irq = platform_get_irq(pdev, 0);;
 117 +       if (!res_mem || irq < 0)
 118 +               return -ENODEV;
 119 +
 120 +       /* enable USB host clock */
 121 +       clk = clk_get(&pdev->dev, "usbh");
 122 +       if (IS_ERR(clk))
 123 +               return -ENODEV;
 124 +
 125 +       clk_enable(clk);
 126 +       usb_host_clock = clk;
 127 +       msleep(100);
 128 +
 129 +       if (BCMCPU_IS_6358()) {
 130 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG);
 131 +               reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
 132 +               reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
 133 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG);
 134 +
 135 +               /*
 136 +                * The magic value comes for the original vendor BSP
 137 +                * and is needed for USB to work. Datasheet does not
 138 +                * help, so the magic value is used as-is.
 139 +                */
 140 +               bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020,
 141 +                               USBH_PRIV_TEST_6358_REG);
 142 +
 143 +       } else if (BCMCPU_IS_6368()) {
 144 +
 145 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG);
 146 +               reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
 147 +               reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
 148 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG);
 149 +
 150 +               reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG);
 151 +               reg |= USBH_PRIV_SETUP_IOC_MASK;
 152 +               bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG);
 153 +       }
 154 +
 155 +       hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
 156 +       if (!hcd)
 157 +               return -ENOMEM;
 158 +       hcd->rsrc_start = res_mem->start;
 159 +       hcd->rsrc_len = res_mem->end - res_mem->start + 1;
 160 +
 161 +       if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
 162 +               pr_debug("request_mem_region failed\n");
 163 +               ret = -EBUSY;
 164 +               goto out;
 165 +       }
 166 +
 167 +       hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
 168 +       if (!hcd->regs) {
 169 +               pr_debug("ioremap failed\n");
 170 +               ret = -EIO;
 171 +               goto out1;
 172 +       }
 173 +
 174 +       ehci = hcd_to_ehci(hcd);
 175 +       ehci->big_endian_mmio = 1;
 176 +       ehci->big_endian_desc = 0;
 177 +       ehci->caps = hcd->regs;
 178 +       ehci->regs = hcd->regs +
 179 +               HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 180 +       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 181 +       ehci->sbrn = 0x20;
 182 +       ehci->ignore_oc = 1;
 183 +
 184 +       ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 185 +       if (ret)
 186 +               goto out2;
 187 +
 188 +       platform_set_drvdata(pdev, hcd);
 189 +       return 0;
 190 +
 191 +out2:
 192 +       iounmap(hcd->regs);
 193 +out1:
 194 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 195 +out:
 196 +       usb_put_hcd(hcd);
 197 +       return ret;
 198 +}
 199 +
 200 +static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
 201 +{
 202 +       struct usb_hcd *hcd;
 203 +
 204 +       hcd = platform_get_drvdata(pdev);
 205 +       usb_remove_hcd(hcd);
 206 +       iounmap(hcd->regs);
 207 +       usb_put_hcd(hcd);
 208 +       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
 209 +       if (usb_host_clock) {
 210 +               clk_disable(usb_host_clock);
 211 +               clk_put(usb_host_clock);
 212 +       }
 213 +       platform_set_drvdata(pdev, NULL);
 214 +       return 0;
 215 +}
 216 +
 217 +static struct platform_driver ehci_hcd_bcm63xx_driver = {
 218 +       .probe          = ehci_hcd_bcm63xx_drv_probe,
 219 +       .remove         = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
 220 +       .shutdown       = usb_hcd_platform_shutdown,
 221 +       .driver         = {
 222 +               .name   = "bcm63xx_ehci",
 223 +               .owner  = THIS_MODULE,
 224 +       },
 225 +};
 226 +
 227 +MODULE_ALIAS("platform:bcm63xx_ehci");
 228 --- a/drivers/usb/host/ehci-hcd.c
 229 +++ b/drivers/usb/host/ehci-hcd.c
 230 @@ -1381,6 +1381,11 @@ MODULE_LICENSE ("GPL");
 231  #define        PLATFORM_DRIVER         ehci_mv_driver
 232  #endif
 233
 234 +#ifdef CONFIG_USB_EHCI_BCM63XX
 235 +#include "ehci-bcm63xx.c"
 236 +#define        PLATFORM_DRIVER         ehci_hcd_bcm63xx_driver
 237 +#endif
 238 +
 239  #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
 240      !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
 241      !defined(XILINX_OF_PLATFORM_DRIVER)