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/*
* Copyright (c) 2012 Sascha Hauer <s.hauer@pengutronix.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <common.h>
#include <init.h>
#include <io.h>
#include <driver.h>
#include <usb/ehci.h>
#include <usb/chipidea-imx.h>
#include <usb/ulpi.h>
#define MXC_EHCI_PORTSC_MASK (0xf << 28)
static int imx_chipidea_probe(struct device_d *dev)
{
struct imxusb_platformdata *pdata = dev->platform_data;
int ret;
void __iomem *base;
struct ehci_data data;
uint32_t portsc;
if (!pdata) {
dev_err(dev, "no pdata!\n");
return -EINVAL;
}
base = dev_request_mem_region(dev, 0);
if (!base)
return -ENODEV;
portsc = readl(base + 0x184);
portsc &= ~MXC_EHCI_PORTSC_MASK;
portsc |= pdata->flags & MXC_EHCI_PORTSC_MASK;
writel(portsc, base + 0x184);
ret = imx_usbmisc_port_init(dev->id, pdata->flags);
if (ret) {
dev_err(dev, "failed to init misc regs: %s\n", strerror(-ret));
return ret;
}
if ((pdata->flags & MXC_EHCI_PORTSC_MASK) == MXC_EHCI_MODE_ULPI) {
dev_dbg(dev, "using ULPI phy\n");
if (IS_ENABLED(CONFIG_USB_ULPI)) {
ret = ulpi_setup(base + 0x170, 1);
} else {
dev_err(dev, "no ULPI support available\n");
ret = -ENODEV;
}
if (ret)
return ret;
}
data.hccr = base + 0x100;
data.hcor = base + 0x140;
data.flags = EHCI_HAS_TT;
if (pdata->mode == IMX_USB_MODE_HOST) {
ret = ehci_register(dev, &data);
} else {
/*
* Not yet implemented. Register USB gadget driver here.
*/
ret = -ENOSYS;
}
return ret;
};
static struct driver_d imx_chipidea_driver = {
.name = "imx-usb",
.probe = imx_chipidea_probe,
};
static int imx_chipidea_init(void)
{
return platform_driver_register(&imx_chipidea_driver);
}
device_initcall(imx_chipidea_init);
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