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