ehci-mxc.c revision c943740ccd7ccfc7e92c80d194d0a8a80ab7b55c
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> 24a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard#include <linux/usb/ulpi.h> 255a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 267e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2703a1d6bf40a273f5a80029f65f9c673308128512Shawn Guo#include <mach/hardware.h> 287e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#include <mach/mxc_ehci.h> 297e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 30a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard#include <asm/mach-types.h> 31a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard 327e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack#define ULPI_VIEWPORT_OFFSET 0x170 337e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 347e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstruct ehci_mxc_priv { 35c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer struct clk *usbclk, *ahbclk, *phyclk; 367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd; 377e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack}; 387e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 397e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack/* called during probe() after chip reset completes */ 407e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic int ehci_mxc_setup(struct usb_hcd *hcd) 417e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 427e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_hcd *ehci = hcd_to_ehci(hcd); 437e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack int retval; 447e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 457e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dbg_hcs_params(ehci, "reset"); 467e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dbg_hcc_params(ehci, "reset"); 477e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 487e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* cache this readonly data; minimize chip reads */ 497e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); 507e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 5165fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET hcd->has_tt = 1; 5265fd42724aee31018b0bb53f4cb04971423be664Matthieu CASTET 537e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack retval = ehci_halt(ehci); 547e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (retval) 557e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return retval; 567e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 577e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* data structure init */ 587e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack retval = ehci_init(hcd); 597e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (retval) 607e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return retval; 617e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 627e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci->sbrn = 0x20; 637e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 647e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci_reset(ehci); 657e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 667e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ehci_port_power(ehci, 0); 677e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return 0; 687e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 697e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 707e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic const struct hc_driver ehci_mxc_hc_driver = { 717e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .description = hcd_name, 727e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .product_desc = "Freescale On-Chip EHCI Host Controller", 737e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .hcd_priv_size = sizeof(struct ehci_hcd), 747e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 757e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 767e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * generic hardware linkage 777e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 787e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .irq = ehci_irq, 797e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .flags = HCD_USB2 | HCD_MEMORY, 807e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 817e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 827e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * basic lifecycle operations 837e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 847e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .reset = ehci_mxc_setup, 857e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .start = ehci_run, 867e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .stop = ehci_stop, 877e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .shutdown = ehci_shutdown, 887e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 897e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 907e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * managing i/o requests and associated device resources 917e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 927e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .urb_enqueue = ehci_urb_enqueue, 937e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .urb_dequeue = ehci_urb_dequeue, 947e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .endpoint_disable = ehci_endpoint_disable, 95b48d7f50e6f16478304170eaf5c2d1a540ba5e31Paul Mundt .endpoint_reset = ehci_endpoint_reset, 967e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 977e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 987e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * scheduling support 997e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 1007e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .get_frame_number = ehci_get_frame, 1017e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1027e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* 1037e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack * root hub support 1047e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack */ 1057e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .hub_status_data = ehci_hub_status_data, 1067e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .hub_control = ehci_hub_control, 1077e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .bus_suspend = ehci_bus_suspend, 1087e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .bus_resume = ehci_bus_resume, 1097e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .relinquish_port = ehci_relinquish_port, 1107e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .port_handed_over = ehci_port_handed_over, 111b48d7f50e6f16478304170eaf5c2d1a540ba5e31Paul Mundt 112b48d7f50e6f16478304170eaf5c2d1a540ba5e31Paul Mundt .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, 1137e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack}; 1147e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic int ehci_mxc_drv_probe(struct platform_device *pdev) 1167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 1177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; 1187e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd; 1197e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct resource *res; 120724c85251f78f1332e0a28f80cead0cee5b7c906Uwe Kleine-König int irq, ret; 121a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard unsigned int flags; 1227e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_mxc_priv *priv; 1237e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct device *dev = &pdev->dev; 1240247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam struct ehci_hcd *ehci; 1257e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1267e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_info(&pdev->dev, "initializing i.MX USB Controller\n"); 1277e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1287e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!pdata) { 1297e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "No platform data given, bailing out.\n"); 1307e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return -EINVAL; 1317e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1327e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1337e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack irq = platform_get_irq(pdev, 0); 1347e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1357e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd = usb_create_hcd(&ehci_mxc_hc_driver, dev, dev_name(dev)); 1367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!hcd) 1377e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return -ENOMEM; 1387e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1397e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack priv = kzalloc(sizeof(*priv), GFP_KERNEL); 1407e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!priv) { 1417e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -ENOMEM; 1427e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_alloc; 1437e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1447e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1457e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1467e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!res) { 1477e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "Found HC with no register addr. Check setup!\n"); 1487e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -ENODEV; 1497e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_get_resource; 1507e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1517e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1527e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->rsrc_start = res->start; 1537e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->rsrc_len = resource_size(res); 1547e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1557e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { 1567e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_dbg(dev, "controller already in use\n"); 1577e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -EBUSY; 1587e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_request_mem; 1597e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1607e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1617e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); 1627e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (!hcd->regs) { 1637e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack dev_err(dev, "error mapping memory\n"); 1647e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = -EFAULT; 1657e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_ioremap; 1667e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 1677e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1687e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* enable clocks */ 169c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer priv->usbclk = clk_get(dev, "ipg"); 1707e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (IS_ERR(priv->usbclk)) { 1717e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack ret = PTR_ERR(priv->usbclk); 1727e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_clk; 1737e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 174198ad2cecde16ce309a65f2fddd5f6d3442f8250Sascha Hauer clk_prepare_enable(priv->usbclk); 1757e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 176c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer priv->ahbclk = clk_get(dev, "ahb"); 177c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer if (IS_ERR(priv->ahbclk)) { 178c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer ret = PTR_ERR(priv->ahbclk); 179c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer goto err_clk_ahb; 1807e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 181c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_prepare_enable(priv->ahbclk); 1827e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 1833bb8029a2445e289efade6133b01545143336f70Eric Bénard /* "dr" device has its own clock on i.MX51 */ 184c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer priv->phyclk = clk_get(dev, "phy"); 185c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer if (IS_ERR(priv->phyclk)) 186c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer priv->phyclk = NULL; 187c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer if (priv->phyclk) 188c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_prepare_enable(priv->phyclk); 189711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard 190711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard 191711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard /* call platform specific init function */ 192711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (pdata->init) { 193711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard ret = pdata->init(pdev); 194711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard if (ret) { 195711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard dev_err(dev, "platform init failed\n"); 196711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard goto err_init; 197711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 198711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard /* platforms need some time to settle changed IO settings */ 199711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard mdelay(10); 200711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 201711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard 2020247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam ehci = hcd_to_ehci(hcd); 2030247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam 2040247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam /* EHCI registers start at offset 0x100 */ 2050247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam ehci->caps = hcd->regs + 0x100; 2060247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam ehci->regs = hcd->regs + 0x100 + 207c430131a02d677aa708f56342c1565edfdacb3c0Jan Andersson HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); 2080247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam 2090247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam /* set up the PORTSCx register */ 2100247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam ehci_writel(ehci, pdata->portsc, &ehci->regs->port_status[0]); 2110247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam 2120247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam /* is this really needed? */ 2130247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam msleep(10); 2140247a7bcd4273fa10c4aba9b3f567c659bab2d2bFabio Estevam 2157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack /* Initialize the transceiver */ 2167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata->otg) { 2177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET; 218b96d3b08365f5a9603f50f3aadca6012f7eaffa1Heikki Krogerus ret = usb_phy_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 } 2246e13c6505cdff9766d5268ffb8c972c1a2f996e6Heikki Krogerus ret = otg_set_vbus(pdata->otg->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 234b5dd18d8747010e3f3eb1cc76a49f94291938559Yong Zhang ret = usb_add_hcd(hcd, irq, IRQF_SHARED); 2357e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (ret) 2367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack goto err_add; 2377e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 238a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard if (pdata->otg) { 239a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard /* 240a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard * efikamx and efikasb have some hardware bug which is 241a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard * preventing usb to work unless CHRGVBUS is set. 242a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard * It's in violation of USB specs 243a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard */ 244a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard if (machine_is_mx51_efikamx() || machine_is_mx51_efikasb()) { 245b96d3b08365f5a9603f50f3aadca6012f7eaffa1Heikki Krogerus flags = usb_phy_io_read(pdata->otg, 246b96d3b08365f5a9603f50f3aadca6012f7eaffa1Heikki Krogerus ULPI_OTG_CTRL); 247a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard flags |= ULPI_OTG_CTRL_CHRGVBUS; 248b96d3b08365f5a9603f50f3aadca6012f7eaffa1Heikki Krogerus ret = usb_phy_io_write(pdata->otg, flags, 249b96d3b08365f5a9603f50f3aadca6012f7eaffa1Heikki Krogerus ULPI_OTG_CTRL); 250a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard if (ret) { 251a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard dev_err(dev, "unable to set CHRVBUS\n"); 252a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard goto err_add; 253a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard } 254a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard } 255a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard } 256a464dc4d4044c936d4558725fa2229fb4a1aa932Arnaud Patard 2577e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return 0; 2587e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2597e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_add: 2607e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata && pdata->exit) 2617e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack pdata->exit(pdev); 2627e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_init: 263c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer if (priv->phyclk) { 264c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_disable_unprepare(priv->phyclk); 265c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_put(priv->phyclk); 2667e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack } 267c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer 268c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_disable_unprepare(priv->ahbclk); 269c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_put(priv->ahbclk); 2707e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_clk_ahb: 271198ad2cecde16ce309a65f2fddd5f6d3442f8250Sascha Hauer clk_disable_unprepare(priv->usbclk); 2727e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_put(priv->usbclk); 2737e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_clk: 2747e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack iounmap(hcd->regs); 2757e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_ioremap: 2767e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 2777e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_request_mem: 2787e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_get_resource: 2797e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack kfree(priv); 2807e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackerr_alloc: 2817e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack usb_put_hcd(hcd); 2827e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return ret; 2837e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 2847e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2857e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic int __exit ehci_mxc_drv_remove(struct platform_device *pdev) 2867e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 2877e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data; 2887e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_mxc_priv *priv = platform_get_drvdata(pdev); 2897e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd = priv->hcd; 2907e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2917e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata && pdata->exit) 2927e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack pdata->exit(pdev); 2937e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2947e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (pdata->otg) 295b96d3b08365f5a9603f50f3aadca6012f7eaffa1Heikki Krogerus usb_phy_shutdown(pdata->otg); 2967e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 2977e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack usb_remove_hcd(hcd); 2987e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack iounmap(hcd->regs); 2997e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack release_mem_region(hcd->rsrc_start, hcd->rsrc_len); 3007e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack usb_put_hcd(hcd); 3017e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack platform_set_drvdata(pdev, NULL); 3027e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 303198ad2cecde16ce309a65f2fddd5f6d3442f8250Sascha Hauer clk_disable_unprepare(priv->usbclk); 3047e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack clk_put(priv->usbclk); 305c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_disable_unprepare(priv->ahbclk); 306c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_put(priv->ahbclk); 307c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer 308c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer if (priv->phyclk) { 309c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_disable_unprepare(priv->phyclk); 310c943740ccd7ccfc7e92c80d194d0a8a80ab7b55cSascha Hauer clk_put(priv->phyclk); 311711669e5b80b6f2d88f61ed8a9681f83d8cbd201Arnaud Patard } 3127e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3137e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack kfree(priv); 3147e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3157e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack return 0; 3167e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 3177e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3187e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic void ehci_mxc_drv_shutdown(struct platform_device *pdev) 3197e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack{ 3207e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct ehci_mxc_priv *priv = platform_get_drvdata(pdev); 3217e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack struct usb_hcd *hcd = priv->hcd; 3227e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3237e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack if (hcd->driver->shutdown) 3247e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack hcd->driver->shutdown(hcd); 3257e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack} 3267e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3277e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel MackMODULE_ALIAS("platform:mxc-ehci"); 3287e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack 3297e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mackstatic struct platform_driver ehci_mxc_driver = { 3307e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .probe = ehci_mxc_drv_probe, 3317e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .remove = __exit_p(ehci_mxc_drv_remove), 3327e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .shutdown = ehci_mxc_drv_shutdown, 3337e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .driver = { 3347e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack .name = "mxc-ehci", 3357e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack }, 3367e8d5cd93fac4d3720d8f780b350c9421e8997d4Daniel Mack}; 337