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/*
* Copyright (C) 2015 Marvell International Ltd.
*
* MVEBU USB HOST xHCI Controller
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <usb.h>
#include <power/regulator.h>
#include <asm/gpio.h>
#include "xhci.h"
DECLARE_GLOBAL_DATA_PTR;
struct mvebu_xhci_platdata {
fdt_addr_t hcd_base;
};
/**
* Contains pointers to register base addresses
* for the usb controller.
*/
struct mvebu_xhci {
struct xhci_ctrl ctrl; /* Needs to come first in this struct! */
struct usb_platdata usb_plat;
struct xhci_hccr *hcd;
};
/*
* Dummy implementation that can be overwritten by a board
* specific function
*/
__weak int board_xhci_enable(fdt_addr_t base)
{
return 0;
}
static int xhci_usb_probe(struct udevice *dev)
{
struct mvebu_xhci_platdata *plat = dev_get_platdata(dev);
struct mvebu_xhci *ctx = dev_get_priv(dev);
struct xhci_hcor *hcor;
int len, ret;
struct udevice *regulator;
ctx->hcd = (struct xhci_hccr *)plat->hcd_base;
len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase));
hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len);
ret = device_get_supply_regulator(dev, "vbus-supply", ®ulator);
if (!ret) {
ret = regulator_set_enable(regulator, true);
if (ret) {
printf("Failed to turn ON the VBUS regulator\n");
return ret;
}
}
/* Enable USB xHCI (VBUS, reset etc) in board specific code */
board_xhci_enable(devfdt_get_addr_index(dev, 1));
return xhci_register(dev, ctx->hcd, hcor);
}
static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
{
struct mvebu_xhci_platdata *plat = dev_get_platdata(dev);
/*
* Get the base address for XHCI controller from the device node
*/
plat->hcd_base = devfdt_get_addr(dev);
if (plat->hcd_base == FDT_ADDR_T_NONE) {
debug("Can't get the XHCI register base address\n");
return -ENXIO;
}
return 0;
}
static const struct udevice_id xhci_usb_ids[] = {
{ .compatible = "marvell,armada3700-xhci" },
{ .compatible = "marvell,armada-380-xhci" },
{ .compatible = "marvell,armada-8k-xhci" },
{ }
};
U_BOOT_DRIVER(usb_xhci) = {
.name = "xhci_mvebu",
.id = UCLASS_USB,
.of_match = xhci_usb_ids,
.ofdata_to_platdata = xhci_usb_ofdata_to_platdata,
.probe = xhci_usb_probe,
.remove = xhci_deregister,
.ops = &xhci_usb_ops,
.platdata_auto_alloc_size = sizeof(struct mvebu_xhci_platdata),
.priv_auto_alloc_size = sizeof(struct mvebu_xhci),
.flags = DM_FLAG_ALLOC_PRIV_DMA,
};
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