/* * 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> #include <usb/fsl_usb2.h> #define MXC_EHCI_PORTSC_MASK ((0xf << 28) | (1 << 25)) static int imx_chipidea_port_init(void *drvdata) { struct device_d *dev = drvdata; struct imxusb_platformdata *pdata = dev->platform_data; int ret; ret = imx_usbmisc_port_init(dev->id, pdata->flags); if (ret) dev_err(dev, "misc init failed: %s\n", strerror(-ret)); if (pdata->init) pdata->init(dev->id); return ret; } static int imx_chipidea_port_post_init(void *drvdata) { struct device_d *dev = drvdata; struct imxusb_platformdata *pdata = dev->platform_data; int ret; ret = imx_usbmisc_port_post_init(dev->id, pdata->flags); if (ret) dev_err(dev, "post misc init failed: %s\n", strerror(-ret)); return ret; } 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; data.init = imx_chipidea_port_init; data.post_init = imx_chipidea_port_post_init; data.drvdata = dev; portsc = readl(base + 0x184); portsc &= ~MXC_EHCI_PORTSC_MASK; portsc |= pdata->flags & MXC_EHCI_PORTSC_MASK; writel(portsc, base + 0x184); imx_chipidea_port_init(dev); 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 && IS_ENABLED(CONFIG_USB_EHCI)) { ret = ehci_register(dev, &data); } else if (pdata->mode == IMX_USB_MODE_DEVICE && IS_ENABLED(CONFIG_USB_GADGET_DRIVER_ARC)) { ret = ci_udc_register(dev, base); } else { dev_err(dev, "No supported role\n"); ret = -ENODEV; } return ret; }; static struct driver_d imx_chipidea_driver = { .name = "imx-usb", .probe = imx_chipidea_probe, }; device_platform_driver(imx_chipidea_driver);