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/*
* Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <linux/err.h>
#include <linux/io.h>
#include <usb.h>
#include <mach/mio-regs.h>
#include <fdtdec.h>
#include "ehci.h"
DECLARE_GLOBAL_DATA_PTR;
#define FDT gd->fdt_blob
#define COMPAT "socionext,uniphier-ehci"
static int get_uniphier_ehci_base(int index, struct ehci_hccr **base)
{
int offset;
for (offset = fdt_node_offset_by_compatible(FDT, 0, COMPAT);
offset >= 0;
offset = fdt_node_offset_by_compatible(FDT, offset, COMPAT)) {
if (index == 0) {
*base = (struct ehci_hccr *)
fdtdec_get_addr(FDT, offset, "reg");
return 0;
}
index--;
}
return -ENODEV; /* not found */
}
static void uniphier_ehci_reset(int index, int on)
{
u32 tmp;
tmp = readl(MIO_USB_RSTCTRL(index));
if (on)
tmp &= ~MIO_USB_RSTCTRL_XRST;
else
tmp |= MIO_USB_RSTCTRL_XRST;
writel(tmp, MIO_USB_RSTCTRL(index));
}
int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
struct ehci_hcor **hcor)
{
int ret;
struct ehci_hccr *cr;
struct ehci_hcor *or;
uniphier_ehci_reset(index, 0);
ret = get_uniphier_ehci_base(index, &cr);
if (ret < 0)
return ret;
or = (void *)cr + HC_LENGTH(ehci_readl(&cr->cr_capbase));
*hccr = cr;
*hcor = or;
return 0;
}
int ehci_hcd_stop(int index)
{
uniphier_ehci_reset(index, 1);
return 0;
}
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