ehci-mxc.c revision 711669e5b80b6f2d88f61ed8a9681f83d8cbd201
17e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack/* 27e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix 37e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> 47e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * 57e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * This program is free software; you can redistribute it and/or modify it 67e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * under the terms of the GNU General Public License as published by the 77e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * Free Software Foundation; either version 2 of the License, or (at your 87e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * option) any later version. 97e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * 107e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * This program is distributed in the hope that it will be useful, but 117e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 127e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 137e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * for more details. 147e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * 157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * You should have received a copy of the GNU General Public License 167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * along with this program; if not, write to the Free Software Foundation, 177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 187e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 197e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 207e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include <linux/platform_device.h> 217e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include <linux/clk.h> 227e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include <linux/delay.h> 237e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include <linux/usb/otg.h> 245a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 257e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 267e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include <mach/mxc_ehci.h> 277e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 287e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#define ULPI_VIEWPORT_OFFSET 0x170 297e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 307e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstruct ehci_mxc_priv { 31711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard struct clk *usbclk, *ahbclk, *phy1clk; 327e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd; 337e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack}; 347e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 357e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack/* called during probe() after chip reset completes */ 367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic int ehci_mxc_setup(struct usb_hcd *hcd) 377e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 387e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_hcd *ehci = hcd_to_ehci(hcd); 39724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König struct device *dev = hcd->self.controller; 40724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König struct mxc_usbh_platform_data *pdata = dev_get_platdata(dev); 417e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack int retval; 427e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 437e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* EHCI registers start at offset 0x100 */ 447e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci->caps = hcd->regs + 0x100; 457e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci->regs = hcd->regs + 0x100 + 467e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); 477e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dbg_hcs_params(ehci, "reset"); 487e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dbg_hcc_params(ehci, "reset"); 497e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 507e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* cache this readonly data; minimize chip reads */ 517e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 527e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 5365fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET hcd->has_tt = 1; 5465fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET 557e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack retval = ehci_halt(ehci); 567e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (retval) 577e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return retval; 587e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 597e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* data structure init */ 607e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack retval = ehci_init(hcd); 617e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (retval) 627e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return retval; 637e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 647e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci->sbrn = 0x20; 657e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 667e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci_reset(ehci); 677e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 68724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König /* set up the PORTSCx register */ 69724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König ehci_writel(ehci, pdata->portsc, &ehci->regs->port_status[0]); 70724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König 71724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König /* is this really needed? */ 72724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König msleep(10); 73724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König 747e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci_port_power(ehci, 0); 757e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return 0; 767e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 777e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 787e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic const struct hc_driver ehci_mxc_hc_driver = { 797e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .description = hcd_name, 807e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .product_desc = "Freescale On-Chip EHCI Host Controller", 817e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .hcd_priv_size = sizeof(struct ehci_hcd), 827e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 837e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 847e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * generic hardware linkage 857e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 867e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .irq = ehci_irq, 877e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .flags = HCD_USB2 | HCD_MEMORY, 887e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 897e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 907e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * basic lifecycle operations 917e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 927e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .reset = ehci_mxc_setup, 937e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .start = ehci_run, 947e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .stop = ehci_stop, 957e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .shutdown = ehci_shutdown, 967e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 977e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 987e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * managing i/o requests and associated device resources 997e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 1007e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .urb_enqueue = ehci_urb_enqueue, 1017e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .urb_dequeue = ehci_urb_dequeue, 1027e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .endpoint_disable = ehci_endpoint_disable, 1037e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1047e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 1057e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * scheduling support 1067e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 1077e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .get_frame_number = ehci_get_frame, 1087e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1097e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 1107e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * root hub support 1117e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 1127e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .hub_status_data = ehci_hub_status_data, 1137e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .hub_control = ehci_hub_control, 1147e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .bus_suspend = ehci_bus_suspend, 1157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .bus_resume = ehci_bus_resume, 1167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .relinquish_port = ehci_relinquish_port, 1177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .port_handed_over = ehci_port_handed_over, 1187e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack}; 1197e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1207e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic int ehci_mxc_drv_probe(struct platform_device *pdev) 1217e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 1227e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; 1237e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd; 1247e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct resource *res; 125724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König int irq, ret; 1267e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_mxc_priv *priv; 1277e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct device *dev = &pdev->dev; 1287e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1297e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_info(&pdev->dev, "initializing i.MX USB Controller\n"); 1307e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1317e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!pdata) { 1327e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "No platform data given, bailing out.\n"); 1337e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return -EINVAL; 1347e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1357e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack irq = platform_get_irq(pdev, 0); 1377e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1387e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd = usb_create_hcd(&ehci_mxc_hc_driver, dev, dev_name(dev)); 1397e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!hcd) 1407e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return -ENOMEM; 1417e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1427e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack priv = kzalloc(sizeof(*priv), GFP_KERNEL); 1437e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!priv) { 1447e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -ENOMEM; 1457e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_alloc; 1467e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1477e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1487e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1497e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!res) { 1507e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "Found HC with no register addr. Check setup!\n"); 1517e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -ENODEV; 1527e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_get_resource; 1537e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1547e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1557e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->rsrc_start = res->start; 1567e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->rsrc_len = resource_size(res); 1577e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1587e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { 1597e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_dbg(dev, "controller already in use\n"); 1607e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -EBUSY; 1617e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_request_mem; 1627e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1637e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1647e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); 1657e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!hcd->regs) { 1667e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "error mapping memory\n"); 1677e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -EFAULT; 1687e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_ioremap; 1697e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1707e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1717e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* enable clocks */ 1727e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack priv->usbclk = clk_get(dev, "usb"); 1737e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (IS_ERR(priv->usbclk)) { 1747e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = PTR_ERR(priv->usbclk); 1757e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_clk; 1767e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1777e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_enable(priv->usbclk); 1787e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1794ea0af0275d7340e5a6823c02e6167b8f3e244fdEric Bénard if (!cpu_is_mx35() && !cpu_is_mx25()) { 1807e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack priv->ahbclk = clk_get(dev, "usb_ahb"); 1817e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (IS_ERR(priv->ahbclk)) { 1827e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = PTR_ERR(priv->ahbclk); 1837e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_clk_ahb; 1847e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1857e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_enable(priv->ahbclk); 1867e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1877e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 188711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard /* "dr" device has its own clock */ 189711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (pdev->id == 0) { 190711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard priv->phy1clk = clk_get(dev, "usb_phy1"); 191711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (IS_ERR(priv->phy1clk)) { 192711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard ret = PTR_ERR(priv->phy1clk); 193711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard goto err_clk_phy; 194711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 195711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard clk_enable(priv->phy1clk); 196711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 197711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard 198711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard 199711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard /* call platform specific init function */ 200711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (pdata->init) { 201711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard ret = pdata->init(pdev); 202711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (ret) { 203711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard dev_err(dev, "platform init failed\n"); 204711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard goto err_init; 205711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 206711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard /* platforms need some time to settle changed IO settings */ 207711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard mdelay(10); 208711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 209711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard 2105a25ad84e01173bb225285eb50f9af48ed1a7598Dinh Nguyen /* setup specific usb hw */ 2115a25ad84e01173bb225285eb50f9af48ed1a7598Dinh Nguyen ret = mxc_initialize_usb_hw(pdev->id, pdata->flags); 2127e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (ret < 0) 2137e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_init; 2147e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* Initialize the transceiver */ 2167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata->otg) { 2177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET; 2184c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang ret = otg_init(pdata->otg); 2194c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang if (ret) { 2204c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang dev_err(dev, "unable to init transceiver, probably missing\n"); 2214c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang ret = -ENODEV; 2224c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang goto err_add; 2234c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang } 2244c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang ret = otg_set_vbus(pdata->otg, 1); 2254c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang if (ret) { 2267e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "unable to enable vbus on transceiver\n"); 2274c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang goto err_add; 2284c9715de52b9b6256bf1e9510917111a47b0c176Wolfram Sang } 2297e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 2307e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2317e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack priv->hcd = hcd; 2327e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack platform_set_drvdata(pdev, priv); 2337e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2347e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); 2357e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (ret) 2367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_add; 2377e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2387e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return 0; 2397e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2407e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_add: 2417e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata && pdata->exit) 2427e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack pdata->exit(pdev); 2437e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_init: 244711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (priv->phy1clk) { 245711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard clk_disable(priv->phy1clk); 246711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard clk_put(priv->phy1clk); 247711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 248711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patarderr_clk_phy: 2497e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (priv->ahbclk) { 2507e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_disable(priv->ahbclk); 2517e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_put(priv->ahbclk); 2527e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 2537e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_clk_ahb: 2547e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_disable(priv->usbclk); 2557e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_put(priv->usbclk); 2567e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_clk: 2577e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack iounmap(hcd->regs); 2587e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_ioremap: 2597e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 2607e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_request_mem: 2617e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_get_resource: 2627e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack kfree(priv); 2637e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_alloc: 2647e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack usb_put_hcd(hcd); 2657e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return ret; 2667e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 2677e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2687e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic int __exit ehci_mxc_drv_remove(struct platform_device *pdev) 2697e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 2707e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; 2717e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_mxc_priv *priv = platform_get_drvdata(pdev); 2727e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd = priv->hcd; 2737e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2747e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata && pdata->exit) 2757e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack pdata->exit(pdev); 2767e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2777e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata->otg) 2787e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack otg_shutdown(pdata->otg); 2797e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2807e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack usb_remove_hcd(hcd); 2817e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack iounmap(hcd->regs); 2827e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 2837e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack usb_put_hcd(hcd); 2847e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack platform_set_drvdata(pdev, NULL); 2857e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2867e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_disable(priv->usbclk); 2877e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_put(priv->usbclk); 2887e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (priv->ahbclk) { 2897e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_disable(priv->ahbclk); 2907e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_put(priv->ahbclk); 2917e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 292711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (priv->phy1clk) { 293711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard clk_disable(priv->phy1clk); 294711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard clk_put(priv->phy1clk); 295711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 2967e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2977e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack kfree(priv); 2987e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2997e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return 0; 3007e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 3017e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3027e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic void ehci_mxc_drv_shutdown(struct platform_device *pdev) 3037e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 3047e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_mxc_priv *priv = platform_get_drvdata(pdev); 3057e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd = priv->hcd; 3067e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3077e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (hcd->driver->shutdown) 3087e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->driver->shutdown(hcd); 3097e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 3107e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3117e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel MackMODULE_ALIAS("platform:mxc-ehci"); 3127e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3137e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic struct platform_driver ehci_mxc_driver = { 3147e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .probe = ehci_mxc_drv_probe, 3157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .remove = __exit_p(ehci_mxc_drv_remove), 3167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .shutdown = ehci_mxc_drv_shutdown, 3177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .driver = { 3187e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .name = "mxc-ehci", 3197e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack }, 3207e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack}; 321