linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 *  PS3 EHCI Host Controller driver

 *

 *  Copyright (C) 2006 Sony Computer Entertainment Inc.

 *  Copyright 2006 Sony Corp.

 */

​

#include <asm/firmware.h>

#include <asm/ps3.h>

​

static void ps3_ehci_setup_insnreg(struct ehci_hcd *ehci)

{

    /* PS3 HC internal setup register offsets. */

​

    enum ps3_ehci_hc_insnreg {

        ps3_ehci_hc_insnreg01 = 0x084,

        ps3_ehci_hc_insnreg02 = 0x088,

        ps3_ehci_hc_insnreg03 = 0x08c,

    };

​

    /* PS3 EHCI HC errata fix 316 - The PS3 EHCI HC will reset its

     * internal INSNREGXX setup regs back to the chip default values

     * on Host Controller Reset (CMD_RESET) or Light Host Controller

     * Reset (CMD_LRESET).  The work-around for this is for the HC

     * driver to re-initialise these regs when ever the HC is reset.

     */

​

    /* Set burst transfer counts to 256 out, 32 in. */

​

    writel_be(0x01000020, (void __iomem *)ehci->regs +

        ps3_ehci_hc_insnreg01);

​

    /* Enable burst transfer counts. */

​

    writel_be(0x00000001, (void __iomem *)ehci->regs +

        ps3_ehci_hc_insnreg03);

}

​

static int ps3_ehci_hc_reset(struct usb_hcd *hcd)

{

    int result;

    struct ehci_hcd *ehci = hcd_to_ehci(hcd);

​

    ehci->big_endian_mmio = 1;

    ehci->caps = hcd->regs;

​

    result = ehci_setup(hcd);

    if (result)

        return result;

​

    ps3_ehci_setup_insnreg(ehci);

​

    return result;

}

​

static const struct hc_driver ps3_ehci_hc_driver = {

    .description        = hcd_name,

    .product_desc       = "PS3 EHCI Host Controller",

    .hcd_priv_size      = sizeof(struct ehci_hcd),

    .irq            = ehci_irq,

    .flags          = HCD_MEMORY | HCD_USB2 | HCD_BH,

    .reset          = ps3_ehci_hc_reset,

    .start          = ehci_run,

    .stop           = ehci_stop,

    .shutdown       = ehci_shutdown,

    .urb_enqueue        = ehci_urb_enqueue,

    .urb_dequeue        = ehci_urb_dequeue,

    .endpoint_disable   = ehci_endpoint_disable,

    .endpoint_reset     = ehci_endpoint_reset,

    .get_frame_number   = ehci_get_frame,

    .hub_status_data    = ehci_hub_status_data,

    .hub_control        = ehci_hub_control,

#if defined(CONFIG_PM)

    .bus_suspend        = ehci_bus_suspend,

    .bus_resume     = ehci_bus_resume,

#endif

    .relinquish_port    = ehci_relinquish_port,

    .port_handed_over   = ehci_port_handed_over,

​

    .clear_tt_buffer_complete   = ehci_clear_tt_buffer_complete,

};

​

static int ps3_ehci_probe(struct ps3_system_bus_device *dev)

{

    int result;

    struct usb_hcd *hcd;

    unsigned int virq;

    static u64 dummy_mask;

​

    if (usb_disabled()) {

        result = -ENODEV;