14bc36fd3SMian Yousaf Kaukab /* 24bc36fd3SMian Yousaf Kaukab * Copyright (C) 2010 ST-Ericsson AB 34bc36fd3SMian Yousaf Kaukab * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> 44bc36fd3SMian Yousaf Kaukab * 54bc36fd3SMian Yousaf Kaukab * Based on omap2430.c 64bc36fd3SMian Yousaf Kaukab * 74bc36fd3SMian Yousaf Kaukab * This program is free software; you can redistribute it and/or modify 84bc36fd3SMian Yousaf Kaukab * it under the terms of the GNU General Public License as published by 94bc36fd3SMian Yousaf Kaukab * the Free Software Foundation; either version 2 of the License, or 104bc36fd3SMian Yousaf Kaukab * (at your option) any later version. 114bc36fd3SMian Yousaf Kaukab * 124bc36fd3SMian Yousaf Kaukab * This program is distributed in the hope that it will be useful, 134bc36fd3SMian Yousaf Kaukab * but WITHOUT ANY WARRANTY; without even the implied warranty of 144bc36fd3SMian Yousaf Kaukab * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 154bc36fd3SMian Yousaf Kaukab * GNU General Public License for more details. 164bc36fd3SMian Yousaf Kaukab * 174bc36fd3SMian Yousaf Kaukab * You should have received a copy of the GNU General Public License 184bc36fd3SMian Yousaf Kaukab * along with this program; if not, write to the Free Software 194bc36fd3SMian Yousaf Kaukab * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 204bc36fd3SMian Yousaf Kaukab */ 214bc36fd3SMian Yousaf Kaukab 224bc36fd3SMian Yousaf Kaukab #include <linux/module.h> 234bc36fd3SMian Yousaf Kaukab #include <linux/kernel.h> 244bc36fd3SMian Yousaf Kaukab #include <linux/init.h> 254bc36fd3SMian Yousaf Kaukab #include <linux/clk.h> 264bc36fd3SMian Yousaf Kaukab #include <linux/io.h> 274bc36fd3SMian Yousaf Kaukab #include <linux/platform_device.h> 284bc36fd3SMian Yousaf Kaukab 294bc36fd3SMian Yousaf Kaukab #include "musb_core.h" 304bc36fd3SMian Yousaf Kaukab 314bc36fd3SMian Yousaf Kaukab struct ux500_glue { 324bc36fd3SMian Yousaf Kaukab struct device *dev; 334bc36fd3SMian Yousaf Kaukab struct platform_device *musb; 344bc36fd3SMian Yousaf Kaukab struct clk *clk; 354bc36fd3SMian Yousaf Kaukab }; 364bc36fd3SMian Yousaf Kaukab #define glue_to_musb(g) platform_get_drvdata(g->musb) 374bc36fd3SMian Yousaf Kaukab 384bc36fd3SMian Yousaf Kaukab static int ux500_musb_init(struct musb *musb) 394bc36fd3SMian Yousaf Kaukab { 404bc36fd3SMian Yousaf Kaukab musb->xceiv = otg_get_transceiver(); 414bc36fd3SMian Yousaf Kaukab if (!musb->xceiv) { 424bc36fd3SMian Yousaf Kaukab pr_err("HS USB OTG: no transceiver configured\n"); 434bc36fd3SMian Yousaf Kaukab return -ENODEV; 444bc36fd3SMian Yousaf Kaukab } 454bc36fd3SMian Yousaf Kaukab 464bc36fd3SMian Yousaf Kaukab return 0; 474bc36fd3SMian Yousaf Kaukab } 484bc36fd3SMian Yousaf Kaukab 494bc36fd3SMian Yousaf Kaukab static int ux500_musb_exit(struct musb *musb) 504bc36fd3SMian Yousaf Kaukab { 514bc36fd3SMian Yousaf Kaukab otg_put_transceiver(musb->xceiv); 524bc36fd3SMian Yousaf Kaukab 534bc36fd3SMian Yousaf Kaukab return 0; 544bc36fd3SMian Yousaf Kaukab } 554bc36fd3SMian Yousaf Kaukab 564bc36fd3SMian Yousaf Kaukab static const struct musb_platform_ops ux500_ops = { 574bc36fd3SMian Yousaf Kaukab .init = ux500_musb_init, 584bc36fd3SMian Yousaf Kaukab .exit = ux500_musb_exit, 594bc36fd3SMian Yousaf Kaukab }; 604bc36fd3SMian Yousaf Kaukab 614bc36fd3SMian Yousaf Kaukab static int __init ux500_probe(struct platform_device *pdev) 624bc36fd3SMian Yousaf Kaukab { 634bc36fd3SMian Yousaf Kaukab struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data; 644bc36fd3SMian Yousaf Kaukab struct platform_device *musb; 654bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue; 664bc36fd3SMian Yousaf Kaukab struct clk *clk; 674bc36fd3SMian Yousaf Kaukab 684bc36fd3SMian Yousaf Kaukab int ret = -ENOMEM; 694bc36fd3SMian Yousaf Kaukab 704bc36fd3SMian Yousaf Kaukab glue = kzalloc(sizeof(*glue), GFP_KERNEL); 714bc36fd3SMian Yousaf Kaukab if (!glue) { 724bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to allocate glue context\n"); 734bc36fd3SMian Yousaf Kaukab goto err0; 744bc36fd3SMian Yousaf Kaukab } 754bc36fd3SMian Yousaf Kaukab 764bc36fd3SMian Yousaf Kaukab musb = platform_device_alloc("musb-hdrc", -1); 774bc36fd3SMian Yousaf Kaukab if (!musb) { 784bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to allocate musb device\n"); 794bc36fd3SMian Yousaf Kaukab goto err1; 804bc36fd3SMian Yousaf Kaukab } 814bc36fd3SMian Yousaf Kaukab 824bc36fd3SMian Yousaf Kaukab clk = clk_get(&pdev->dev, "usb"); 834bc36fd3SMian Yousaf Kaukab if (IS_ERR(clk)) { 844bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to get clock\n"); 854bc36fd3SMian Yousaf Kaukab ret = PTR_ERR(clk); 864bc36fd3SMian Yousaf Kaukab goto err2; 874bc36fd3SMian Yousaf Kaukab } 884bc36fd3SMian Yousaf Kaukab 894bc36fd3SMian Yousaf Kaukab ret = clk_enable(clk); 904bc36fd3SMian Yousaf Kaukab if (ret) { 914bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to enable clock\n"); 924bc36fd3SMian Yousaf Kaukab goto err3; 934bc36fd3SMian Yousaf Kaukab } 944bc36fd3SMian Yousaf Kaukab 954bc36fd3SMian Yousaf Kaukab musb->dev.parent = &pdev->dev; 9687266064SMian Yousaf Kaukab musb->dev.dma_mask = pdev->dev.dma_mask; 9787266064SMian Yousaf Kaukab musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; 984bc36fd3SMian Yousaf Kaukab 994bc36fd3SMian Yousaf Kaukab glue->dev = &pdev->dev; 1004bc36fd3SMian Yousaf Kaukab glue->musb = musb; 1014bc36fd3SMian Yousaf Kaukab glue->clk = clk; 1024bc36fd3SMian Yousaf Kaukab 1034bc36fd3SMian Yousaf Kaukab pdata->platform_ops = &ux500_ops; 1044bc36fd3SMian Yousaf Kaukab 1054bc36fd3SMian Yousaf Kaukab platform_set_drvdata(pdev, glue); 1064bc36fd3SMian Yousaf Kaukab 1074bc36fd3SMian Yousaf Kaukab ret = platform_device_add_resources(musb, pdev->resource, 1084bc36fd3SMian Yousaf Kaukab pdev->num_resources); 1094bc36fd3SMian Yousaf Kaukab if (ret) { 1104bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to add resources\n"); 1114bc36fd3SMian Yousaf Kaukab goto err4; 1124bc36fd3SMian Yousaf Kaukab } 1134bc36fd3SMian Yousaf Kaukab 1144bc36fd3SMian Yousaf Kaukab ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); 1154bc36fd3SMian Yousaf Kaukab if (ret) { 1164bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to add platform_data\n"); 1174bc36fd3SMian Yousaf Kaukab goto err4; 1184bc36fd3SMian Yousaf Kaukab } 1194bc36fd3SMian Yousaf Kaukab 1204bc36fd3SMian Yousaf Kaukab ret = platform_device_add(musb); 1214bc36fd3SMian Yousaf Kaukab if (ret) { 1224bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to register musb device\n"); 1234bc36fd3SMian Yousaf Kaukab goto err4; 1244bc36fd3SMian Yousaf Kaukab } 1254bc36fd3SMian Yousaf Kaukab 1264bc36fd3SMian Yousaf Kaukab return 0; 1274bc36fd3SMian Yousaf Kaukab 1284bc36fd3SMian Yousaf Kaukab err4: 1294bc36fd3SMian Yousaf Kaukab clk_disable(clk); 1304bc36fd3SMian Yousaf Kaukab 1314bc36fd3SMian Yousaf Kaukab err3: 1324bc36fd3SMian Yousaf Kaukab clk_put(clk); 1334bc36fd3SMian Yousaf Kaukab 1344bc36fd3SMian Yousaf Kaukab err2: 1354bc36fd3SMian Yousaf Kaukab platform_device_put(musb); 1364bc36fd3SMian Yousaf Kaukab 1374bc36fd3SMian Yousaf Kaukab err1: 1384bc36fd3SMian Yousaf Kaukab kfree(glue); 1394bc36fd3SMian Yousaf Kaukab 1404bc36fd3SMian Yousaf Kaukab err0: 1414bc36fd3SMian Yousaf Kaukab return ret; 1424bc36fd3SMian Yousaf Kaukab } 1434bc36fd3SMian Yousaf Kaukab 1444bc36fd3SMian Yousaf Kaukab static int __exit ux500_remove(struct platform_device *pdev) 1454bc36fd3SMian Yousaf Kaukab { 1464bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = platform_get_drvdata(pdev); 1474bc36fd3SMian Yousaf Kaukab 1484bc36fd3SMian Yousaf Kaukab platform_device_del(glue->musb); 1494bc36fd3SMian Yousaf Kaukab platform_device_put(glue->musb); 1504bc36fd3SMian Yousaf Kaukab clk_disable(glue->clk); 1514bc36fd3SMian Yousaf Kaukab clk_put(glue->clk); 1524bc36fd3SMian Yousaf Kaukab kfree(glue); 1534bc36fd3SMian Yousaf Kaukab 1544bc36fd3SMian Yousaf Kaukab return 0; 1554bc36fd3SMian Yousaf Kaukab } 1564bc36fd3SMian Yousaf Kaukab 1574bc36fd3SMian Yousaf Kaukab #ifdef CONFIG_PM 1584bc36fd3SMian Yousaf Kaukab static int ux500_suspend(struct device *dev) 1594bc36fd3SMian Yousaf Kaukab { 1604bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = dev_get_drvdata(dev); 1614bc36fd3SMian Yousaf Kaukab struct musb *musb = glue_to_musb(glue); 1624bc36fd3SMian Yousaf Kaukab 1634bc36fd3SMian Yousaf Kaukab otg_set_suspend(musb->xceiv, 1); 1644bc36fd3SMian Yousaf Kaukab clk_disable(glue->clk); 1654bc36fd3SMian Yousaf Kaukab 1664bc36fd3SMian Yousaf Kaukab return 0; 1674bc36fd3SMian Yousaf Kaukab } 1684bc36fd3SMian Yousaf Kaukab 1694bc36fd3SMian Yousaf Kaukab static int ux500_resume(struct device *dev) 1704bc36fd3SMian Yousaf Kaukab { 1714bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = dev_get_drvdata(dev); 1724bc36fd3SMian Yousaf Kaukab struct musb *musb = glue_to_musb(glue); 1734bc36fd3SMian Yousaf Kaukab int ret; 1744bc36fd3SMian Yousaf Kaukab 1754bc36fd3SMian Yousaf Kaukab ret = clk_enable(glue->clk); 1764bc36fd3SMian Yousaf Kaukab if (ret) { 1774bc36fd3SMian Yousaf Kaukab dev_err(dev, "failed to enable clock\n"); 1784bc36fd3SMian Yousaf Kaukab return ret; 1794bc36fd3SMian Yousaf Kaukab } 1804bc36fd3SMian Yousaf Kaukab 1814bc36fd3SMian Yousaf Kaukab otg_set_suspend(musb->xceiv, 0); 1824bc36fd3SMian Yousaf Kaukab 1834bc36fd3SMian Yousaf Kaukab return 0; 1844bc36fd3SMian Yousaf Kaukab } 1854bc36fd3SMian Yousaf Kaukab 1864bc36fd3SMian Yousaf Kaukab static const struct dev_pm_ops ux500_pm_ops = { 1874bc36fd3SMian Yousaf Kaukab .suspend = ux500_suspend, 1884bc36fd3SMian Yousaf Kaukab .resume = ux500_resume, 1894bc36fd3SMian Yousaf Kaukab }; 1904bc36fd3SMian Yousaf Kaukab 1914bc36fd3SMian Yousaf Kaukab #define DEV_PM_OPS (&ux500_pm_ops) 1924bc36fd3SMian Yousaf Kaukab #else 1934bc36fd3SMian Yousaf Kaukab #define DEV_PM_OPS NULL 1944bc36fd3SMian Yousaf Kaukab #endif 1954bc36fd3SMian Yousaf Kaukab 1964bc36fd3SMian Yousaf Kaukab static struct platform_driver ux500_driver = { 1974bc36fd3SMian Yousaf Kaukab .remove = __exit_p(ux500_remove), 1984bc36fd3SMian Yousaf Kaukab .driver = { 1994bc36fd3SMian Yousaf Kaukab .name = "musb-ux500", 2004bc36fd3SMian Yousaf Kaukab .pm = DEV_PM_OPS, 2014bc36fd3SMian Yousaf Kaukab }, 2024bc36fd3SMian Yousaf Kaukab }; 2034bc36fd3SMian Yousaf Kaukab 2044bc36fd3SMian Yousaf Kaukab MODULE_DESCRIPTION("UX500 MUSB Glue Layer"); 2054bc36fd3SMian Yousaf Kaukab MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>"); 2064bc36fd3SMian Yousaf Kaukab MODULE_LICENSE("GPL v2"); 2074bc36fd3SMian Yousaf Kaukab 2084bc36fd3SMian Yousaf Kaukab static int __init ux500_init(void) 2094bc36fd3SMian Yousaf Kaukab { 2104bc36fd3SMian Yousaf Kaukab return platform_driver_probe(&ux500_driver, ux500_probe); 2114bc36fd3SMian Yousaf Kaukab } 2124bc36fd3SMian Yousaf Kaukab subsys_initcall(ux500_init); 2134bc36fd3SMian Yousaf Kaukab 2144bc36fd3SMian Yousaf Kaukab static void __exit ux500_exit(void) 2154bc36fd3SMian Yousaf Kaukab { 2164bc36fd3SMian Yousaf Kaukab platform_driver_unregister(&ux500_driver); 2174bc36fd3SMian Yousaf Kaukab } 2184bc36fd3SMian Yousaf Kaukab module_exit(ux500_exit); 219