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/clk.h> 25ded017eeSKishon Vijay Abraham I #include <linux/err.h> 264bc36fd3SMian Yousaf Kaukab #include <linux/io.h> 27313bdb11SLee Jones #include <linux/of.h> 284bc36fd3SMian Yousaf Kaukab #include <linux/platform_device.h> 29af6882beSFabio Baltieri #include <linux/usb/musb-ux500.h> 304bc36fd3SMian Yousaf Kaukab 314bc36fd3SMian Yousaf Kaukab #include "musb_core.h" 324bc36fd3SMian Yousaf Kaukab 33a20b1b79SLee Jones static struct musb_hdrc_config ux500_musb_hdrc_config = { 34a20b1b79SLee Jones .multipoint = true, 35a20b1b79SLee Jones .dyn_fifo = true, 36a20b1b79SLee Jones .num_eps = 16, 37a20b1b79SLee Jones .ram_bits = 16, 38a20b1b79SLee Jones }; 39a20b1b79SLee Jones 404bc36fd3SMian Yousaf Kaukab struct ux500_glue { 414bc36fd3SMian Yousaf Kaukab struct device *dev; 424bc36fd3SMian Yousaf Kaukab struct platform_device *musb; 434bc36fd3SMian Yousaf Kaukab struct clk *clk; 444bc36fd3SMian Yousaf Kaukab }; 454bc36fd3SMian Yousaf Kaukab #define glue_to_musb(g) platform_get_drvdata(g->musb) 464bc36fd3SMian Yousaf Kaukab 47996a9d26SFabio Baltieri static void ux500_musb_set_vbus(struct musb *musb, int is_on) 48996a9d26SFabio Baltieri { 49996a9d26SFabio Baltieri u8 devctl; 50996a9d26SFabio Baltieri unsigned long timeout = jiffies + msecs_to_jiffies(1000); 51996a9d26SFabio Baltieri /* HDRC controls CPEN, but beware current surges during device 52996a9d26SFabio Baltieri * connect. They can trigger transient overcurrent conditions 53996a9d26SFabio Baltieri * that must be ignored. 54996a9d26SFabio Baltieri */ 55996a9d26SFabio Baltieri 56996a9d26SFabio Baltieri devctl = musb_readb(musb->mregs, MUSB_DEVCTL); 57996a9d26SFabio Baltieri 58996a9d26SFabio Baltieri if (is_on) { 59e47d9254SAntoine Tenart if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) { 60996a9d26SFabio Baltieri /* start the session */ 61996a9d26SFabio Baltieri devctl |= MUSB_DEVCTL_SESSION; 62996a9d26SFabio Baltieri musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); 63996a9d26SFabio Baltieri /* 64996a9d26SFabio Baltieri * Wait for the musb to set as A device to enable the 65996a9d26SFabio Baltieri * VBUS 66996a9d26SFabio Baltieri */ 67996a9d26SFabio Baltieri while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { 68996a9d26SFabio Baltieri 69996a9d26SFabio Baltieri if (time_after(jiffies, timeout)) { 70996a9d26SFabio Baltieri dev_err(musb->controller, 71996a9d26SFabio Baltieri "configured as A device timeout"); 72996a9d26SFabio Baltieri break; 73996a9d26SFabio Baltieri } 74996a9d26SFabio Baltieri } 75996a9d26SFabio Baltieri 76996a9d26SFabio Baltieri } else { 77996a9d26SFabio Baltieri musb->is_active = 1; 78996a9d26SFabio Baltieri musb->xceiv->otg->default_a = 1; 79e47d9254SAntoine Tenart musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; 80996a9d26SFabio Baltieri devctl |= MUSB_DEVCTL_SESSION; 81996a9d26SFabio Baltieri MUSB_HST_MODE(musb); 82996a9d26SFabio Baltieri } 83996a9d26SFabio Baltieri } else { 84996a9d26SFabio Baltieri musb->is_active = 0; 85996a9d26SFabio Baltieri 86996a9d26SFabio Baltieri /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and jumping 87996a9d26SFabio Baltieri * right to B_IDLE... 88996a9d26SFabio Baltieri */ 89996a9d26SFabio Baltieri musb->xceiv->otg->default_a = 0; 90996a9d26SFabio Baltieri devctl &= ~MUSB_DEVCTL_SESSION; 91996a9d26SFabio Baltieri MUSB_DEV_MODE(musb); 92996a9d26SFabio Baltieri } 93996a9d26SFabio Baltieri musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); 94996a9d26SFabio Baltieri 95996a9d26SFabio Baltieri /* 96996a9d26SFabio Baltieri * Devctl values will be updated after vbus goes below 97996a9d26SFabio Baltieri * session_valid. The time taken depends on the capacitance 98996a9d26SFabio Baltieri * on VBUS line. The max discharge time can be upto 1 sec 99996a9d26SFabio Baltieri * as per the spec. Typically on our platform, it is 200ms 100996a9d26SFabio Baltieri */ 101996a9d26SFabio Baltieri if (!is_on) 102996a9d26SFabio Baltieri mdelay(200); 103996a9d26SFabio Baltieri 104996a9d26SFabio Baltieri dev_dbg(musb->controller, "VBUS %s, devctl %02x\n", 105e47d9254SAntoine Tenart usb_otg_state_string(musb->xceiv->otg->state), 106996a9d26SFabio Baltieri musb_readb(musb->mregs, MUSB_DEVCTL)); 107996a9d26SFabio Baltieri } 108996a9d26SFabio Baltieri 1090135522cSFabio Baltieri static int musb_otg_notifications(struct notifier_block *nb, 1100135522cSFabio Baltieri unsigned long event, void *unused) 1110135522cSFabio Baltieri { 1120135522cSFabio Baltieri struct musb *musb = container_of(nb, struct musb, nb); 1130135522cSFabio Baltieri 1140135522cSFabio Baltieri dev_dbg(musb->controller, "musb_otg_notifications %ld %s\n", 115e47d9254SAntoine Tenart event, usb_otg_state_string(musb->xceiv->otg->state)); 1160135522cSFabio Baltieri 1170135522cSFabio Baltieri switch (event) { 118af6882beSFabio Baltieri case UX500_MUSB_ID: 1190135522cSFabio Baltieri dev_dbg(musb->controller, "ID GND\n"); 1200135522cSFabio Baltieri ux500_musb_set_vbus(musb, 1); 1210135522cSFabio Baltieri break; 122af6882beSFabio Baltieri case UX500_MUSB_VBUS: 1230135522cSFabio Baltieri dev_dbg(musb->controller, "VBUS Connect\n"); 1240135522cSFabio Baltieri break; 125af6882beSFabio Baltieri case UX500_MUSB_NONE: 1260135522cSFabio Baltieri dev_dbg(musb->controller, "VBUS Disconnect\n"); 1270135522cSFabio Baltieri if (is_host_active(musb)) 1280135522cSFabio Baltieri ux500_musb_set_vbus(musb, 0); 1290135522cSFabio Baltieri else 130e47d9254SAntoine Tenart musb->xceiv->otg->state = OTG_STATE_B_IDLE; 1310135522cSFabio Baltieri break; 1320135522cSFabio Baltieri default: 1330135522cSFabio Baltieri dev_dbg(musb->controller, "ID float\n"); 1340135522cSFabio Baltieri return NOTIFY_DONE; 1350135522cSFabio Baltieri } 1360135522cSFabio Baltieri return NOTIFY_OK; 1370135522cSFabio Baltieri } 1380135522cSFabio Baltieri 139baef653aSPhilippe De Swert static irqreturn_t ux500_musb_interrupt(int irq, void *__hci) 140baef653aSPhilippe De Swert { 141baef653aSPhilippe De Swert unsigned long flags; 142baef653aSPhilippe De Swert irqreturn_t retval = IRQ_NONE; 143baef653aSPhilippe De Swert struct musb *musb = __hci; 144baef653aSPhilippe De Swert 145baef653aSPhilippe De Swert spin_lock_irqsave(&musb->lock, flags); 146baef653aSPhilippe De Swert 147baef653aSPhilippe De Swert musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); 148baef653aSPhilippe De Swert musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); 149baef653aSPhilippe De Swert musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); 150baef653aSPhilippe De Swert 151baef653aSPhilippe De Swert if (musb->int_usb || musb->int_tx || musb->int_rx) 152baef653aSPhilippe De Swert retval = musb_interrupt(musb); 153baef653aSPhilippe De Swert 154baef653aSPhilippe De Swert spin_unlock_irqrestore(&musb->lock, flags); 155baef653aSPhilippe De Swert 156baef653aSPhilippe De Swert return retval; 157baef653aSPhilippe De Swert } 158baef653aSPhilippe De Swert 1594bc36fd3SMian Yousaf Kaukab static int ux500_musb_init(struct musb *musb) 1604bc36fd3SMian Yousaf Kaukab { 1610135522cSFabio Baltieri int status; 1620135522cSFabio Baltieri 163662dca54SKishon Vijay Abraham I musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); 164ded017eeSKishon Vijay Abraham I if (IS_ERR_OR_NULL(musb->xceiv)) { 1654bc36fd3SMian Yousaf Kaukab pr_err("HS USB OTG: no transceiver configured\n"); 16625736e0cSMing Lei return -EPROBE_DEFER; 1674bc36fd3SMian Yousaf Kaukab } 1684bc36fd3SMian Yousaf Kaukab 1690135522cSFabio Baltieri musb->nb.notifier_call = musb_otg_notifications; 1700135522cSFabio Baltieri status = usb_register_notifier(musb->xceiv, &musb->nb); 1710135522cSFabio Baltieri if (status < 0) { 1720135522cSFabio Baltieri dev_dbg(musb->controller, "notification register failed\n"); 1730135522cSFabio Baltieri return status; 1740135522cSFabio Baltieri } 1750135522cSFabio Baltieri 176baef653aSPhilippe De Swert musb->isr = ux500_musb_interrupt; 177baef653aSPhilippe De Swert 1784bc36fd3SMian Yousaf Kaukab return 0; 1794bc36fd3SMian Yousaf Kaukab } 1804bc36fd3SMian Yousaf Kaukab 1814bc36fd3SMian Yousaf Kaukab static int ux500_musb_exit(struct musb *musb) 1824bc36fd3SMian Yousaf Kaukab { 1830135522cSFabio Baltieri usb_unregister_notifier(musb->xceiv, &musb->nb); 1840135522cSFabio Baltieri 185721002ecSKishon Vijay Abraham I usb_put_phy(musb->xceiv); 1864bc36fd3SMian Yousaf Kaukab 1874bc36fd3SMian Yousaf Kaukab return 0; 1884bc36fd3SMian Yousaf Kaukab } 1894bc36fd3SMian Yousaf Kaukab 1904bc36fd3SMian Yousaf Kaukab static const struct musb_platform_ops ux500_ops = { 191f8e9f34fSTony Lindgren .quirks = MUSB_DMA_UX500 | MUSB_INDEXED_EP, 1927f6283edSTony Lindgren #ifdef CONFIG_USB_UX500_DMA 1937f6283edSTony Lindgren .dma_init = ux500_dma_controller_create, 1947f6283edSTony Lindgren .dma_exit = ux500_dma_controller_destroy, 1957f6283edSTony Lindgren #endif 1964bc36fd3SMian Yousaf Kaukab .init = ux500_musb_init, 1974bc36fd3SMian Yousaf Kaukab .exit = ux500_musb_exit, 1988a77f05aSTony Lindgren .fifo_mode = 5, 199996a9d26SFabio Baltieri 200996a9d26SFabio Baltieri .set_vbus = ux500_musb_set_vbus, 2014bc36fd3SMian Yousaf Kaukab }; 2024bc36fd3SMian Yousaf Kaukab 203313bdb11SLee Jones static struct musb_hdrc_platform_data * 204313bdb11SLee Jones ux500_of_probe(struct platform_device *pdev, struct device_node *np) 205313bdb11SLee Jones { 206313bdb11SLee Jones struct musb_hdrc_platform_data *pdata; 207313bdb11SLee Jones const char *mode; 208313bdb11SLee Jones int strlen; 209313bdb11SLee Jones 210313bdb11SLee Jones pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 211313bdb11SLee Jones if (!pdata) 212313bdb11SLee Jones return NULL; 213313bdb11SLee Jones 214313bdb11SLee Jones mode = of_get_property(np, "dr_mode", &strlen); 215313bdb11SLee Jones if (!mode) { 216313bdb11SLee Jones dev_err(&pdev->dev, "No 'dr_mode' property found\n"); 217313bdb11SLee Jones return NULL; 218313bdb11SLee Jones } 219313bdb11SLee Jones 220313bdb11SLee Jones if (strlen > 0) { 221313bdb11SLee Jones if (!strcmp(mode, "host")) 222313bdb11SLee Jones pdata->mode = MUSB_HOST; 223313bdb11SLee Jones if (!strcmp(mode, "otg")) 224313bdb11SLee Jones pdata->mode = MUSB_OTG; 225313bdb11SLee Jones if (!strcmp(mode, "peripheral")) 226313bdb11SLee Jones pdata->mode = MUSB_PERIPHERAL; 227313bdb11SLee Jones } 228313bdb11SLee Jones 229313bdb11SLee Jones return pdata; 230313bdb11SLee Jones } 231313bdb11SLee Jones 23241ac7b3aSBill Pemberton static int ux500_probe(struct platform_device *pdev) 2334bc36fd3SMian Yousaf Kaukab { 23409fc7d22SFelipe Balbi struct resource musb_resources[2]; 235c1a7d67cSJingoo Han struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); 236313bdb11SLee Jones struct device_node *np = pdev->dev.of_node; 2374bc36fd3SMian Yousaf Kaukab struct platform_device *musb; 2384bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue; 2394bc36fd3SMian Yousaf Kaukab struct clk *clk; 2404bc36fd3SMian Yousaf Kaukab int ret = -ENOMEM; 2414bc36fd3SMian Yousaf Kaukab 242313bdb11SLee Jones if (!pdata) { 243313bdb11SLee Jones if (np) { 244313bdb11SLee Jones pdata = ux500_of_probe(pdev, np); 245313bdb11SLee Jones if (!pdata) 246313bdb11SLee Jones goto err0; 247313bdb11SLee Jones 248313bdb11SLee Jones pdev->dev.platform_data = pdata; 249313bdb11SLee Jones } else { 250313bdb11SLee Jones dev_err(&pdev->dev, "no pdata or device tree found\n"); 251313bdb11SLee Jones goto err0; 252313bdb11SLee Jones } 253313bdb11SLee Jones } 254313bdb11SLee Jones 255d7dc5bdeSHimangi Saraogi glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); 25624c611b9SPeter Chen if (!glue) 2574bc36fd3SMian Yousaf Kaukab goto err0; 2584bc36fd3SMian Yousaf Kaukab 2592f771164SSebastian Andrzej Siewior musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); 2604bc36fd3SMian Yousaf Kaukab if (!musb) { 2614bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to allocate musb device\n"); 262d7dc5bdeSHimangi Saraogi goto err0; 2634bc36fd3SMian Yousaf Kaukab } 2644bc36fd3SMian Yousaf Kaukab 265d7dc5bdeSHimangi Saraogi clk = devm_clk_get(&pdev->dev, NULL); 2664bc36fd3SMian Yousaf Kaukab if (IS_ERR(clk)) { 2674bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to get clock\n"); 2684bc36fd3SMian Yousaf Kaukab ret = PTR_ERR(clk); 269d7dc5bdeSHimangi Saraogi goto err1; 2704bc36fd3SMian Yousaf Kaukab } 2714bc36fd3SMian Yousaf Kaukab 27299d17cfaSFabio Baltieri ret = clk_prepare_enable(clk); 2734bc36fd3SMian Yousaf Kaukab if (ret) { 2744bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to enable clock\n"); 275d7dc5bdeSHimangi Saraogi goto err1; 2764bc36fd3SMian Yousaf Kaukab } 2774bc36fd3SMian Yousaf Kaukab 2784bc36fd3SMian Yousaf Kaukab musb->dev.parent = &pdev->dev; 2791e6eebb4SLee Jones musb->dev.dma_mask = &pdev->dev.coherent_dma_mask; 28087266064SMian Yousaf Kaukab musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; 2814bc36fd3SMian Yousaf Kaukab 2824bc36fd3SMian Yousaf Kaukab glue->dev = &pdev->dev; 2834bc36fd3SMian Yousaf Kaukab glue->musb = musb; 2844bc36fd3SMian Yousaf Kaukab glue->clk = clk; 2854bc36fd3SMian Yousaf Kaukab 2864bc36fd3SMian Yousaf Kaukab pdata->platform_ops = &ux500_ops; 287a20b1b79SLee Jones pdata->config = &ux500_musb_hdrc_config; 2884bc36fd3SMian Yousaf Kaukab 2894bc36fd3SMian Yousaf Kaukab platform_set_drvdata(pdev, glue); 2904bc36fd3SMian Yousaf Kaukab 29109fc7d22SFelipe Balbi memset(musb_resources, 0x00, sizeof(*musb_resources) * 29209fc7d22SFelipe Balbi ARRAY_SIZE(musb_resources)); 29309fc7d22SFelipe Balbi 29409fc7d22SFelipe Balbi musb_resources[0].name = pdev->resource[0].name; 29509fc7d22SFelipe Balbi musb_resources[0].start = pdev->resource[0].start; 29609fc7d22SFelipe Balbi musb_resources[0].end = pdev->resource[0].end; 29709fc7d22SFelipe Balbi musb_resources[0].flags = pdev->resource[0].flags; 29809fc7d22SFelipe Balbi 29909fc7d22SFelipe Balbi musb_resources[1].name = pdev->resource[1].name; 30009fc7d22SFelipe Balbi musb_resources[1].start = pdev->resource[1].start; 30109fc7d22SFelipe Balbi musb_resources[1].end = pdev->resource[1].end; 30209fc7d22SFelipe Balbi musb_resources[1].flags = pdev->resource[1].flags; 30309fc7d22SFelipe Balbi 30409fc7d22SFelipe Balbi ret = platform_device_add_resources(musb, musb_resources, 30509fc7d22SFelipe Balbi ARRAY_SIZE(musb_resources)); 3064bc36fd3SMian Yousaf Kaukab if (ret) { 3074bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to add resources\n"); 308d7dc5bdeSHimangi Saraogi goto err2; 3094bc36fd3SMian Yousaf Kaukab } 3104bc36fd3SMian Yousaf Kaukab 3114bc36fd3SMian Yousaf Kaukab ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); 3124bc36fd3SMian Yousaf Kaukab if (ret) { 3134bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to add platform_data\n"); 314d7dc5bdeSHimangi Saraogi goto err2; 3154bc36fd3SMian Yousaf Kaukab } 3164bc36fd3SMian Yousaf Kaukab 3174bc36fd3SMian Yousaf Kaukab ret = platform_device_add(musb); 3184bc36fd3SMian Yousaf Kaukab if (ret) { 3194bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to register musb device\n"); 320d7dc5bdeSHimangi Saraogi goto err2; 3214bc36fd3SMian Yousaf Kaukab } 3224bc36fd3SMian Yousaf Kaukab 3234bc36fd3SMian Yousaf Kaukab return 0; 3244bc36fd3SMian Yousaf Kaukab 325d7dc5bdeSHimangi Saraogi err2: 32699d17cfaSFabio Baltieri clk_disable_unprepare(clk); 3274bc36fd3SMian Yousaf Kaukab 3284bc36fd3SMian Yousaf Kaukab err1: 329d7dc5bdeSHimangi Saraogi platform_device_put(musb); 3304bc36fd3SMian Yousaf Kaukab 3314bc36fd3SMian Yousaf Kaukab err0: 3324bc36fd3SMian Yousaf Kaukab return ret; 3334bc36fd3SMian Yousaf Kaukab } 3344bc36fd3SMian Yousaf Kaukab 335fb4e98abSBill Pemberton static int ux500_remove(struct platform_device *pdev) 3364bc36fd3SMian Yousaf Kaukab { 3374bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = platform_get_drvdata(pdev); 3384bc36fd3SMian Yousaf Kaukab 3394b0de6f3SWei Yongjun platform_device_unregister(glue->musb); 34099d17cfaSFabio Baltieri clk_disable_unprepare(glue->clk); 3414bc36fd3SMian Yousaf Kaukab 3424bc36fd3SMian Yousaf Kaukab return 0; 3434bc36fd3SMian Yousaf Kaukab } 3444bc36fd3SMian Yousaf Kaukab 34530d09223SFelipe Balbi #ifdef CONFIG_PM_SLEEP 3464bc36fd3SMian Yousaf Kaukab static int ux500_suspend(struct device *dev) 3474bc36fd3SMian Yousaf Kaukab { 3484bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = dev_get_drvdata(dev); 3494bc36fd3SMian Yousaf Kaukab struct musb *musb = glue_to_musb(glue); 3504bc36fd3SMian Yousaf Kaukab 351b96d3b08SHeikki Krogerus usb_phy_set_suspend(musb->xceiv, 1); 35299d17cfaSFabio Baltieri clk_disable_unprepare(glue->clk); 3534bc36fd3SMian Yousaf Kaukab 3544bc36fd3SMian Yousaf Kaukab return 0; 3554bc36fd3SMian Yousaf Kaukab } 3564bc36fd3SMian Yousaf Kaukab 3574bc36fd3SMian Yousaf Kaukab static int ux500_resume(struct device *dev) 3584bc36fd3SMian Yousaf Kaukab { 3594bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = dev_get_drvdata(dev); 3604bc36fd3SMian Yousaf Kaukab struct musb *musb = glue_to_musb(glue); 3614bc36fd3SMian Yousaf Kaukab int ret; 3624bc36fd3SMian Yousaf Kaukab 36399d17cfaSFabio Baltieri ret = clk_prepare_enable(glue->clk); 3644bc36fd3SMian Yousaf Kaukab if (ret) { 3654bc36fd3SMian Yousaf Kaukab dev_err(dev, "failed to enable clock\n"); 3664bc36fd3SMian Yousaf Kaukab return ret; 3674bc36fd3SMian Yousaf Kaukab } 3684bc36fd3SMian Yousaf Kaukab 369b96d3b08SHeikki Krogerus usb_phy_set_suspend(musb->xceiv, 0); 3704bc36fd3SMian Yousaf Kaukab 3714bc36fd3SMian Yousaf Kaukab return 0; 3724bc36fd3SMian Yousaf Kaukab } 3734bc36fd3SMian Yousaf Kaukab #endif 3744bc36fd3SMian Yousaf Kaukab 375a89adb09SDaniel Mack static SIMPLE_DEV_PM_OPS(ux500_pm_ops, ux500_suspend, ux500_resume); 376a89adb09SDaniel Mack 377313bdb11SLee Jones static const struct of_device_id ux500_match[] = { 378313bdb11SLee Jones { .compatible = "stericsson,db8500-musb", }, 379313bdb11SLee Jones {} 380313bdb11SLee Jones }; 381313bdb11SLee Jones 3824bc36fd3SMian Yousaf Kaukab static struct platform_driver ux500_driver = { 383e9e8c85eSFelipe Balbi .probe = ux500_probe, 3847690417dSBill Pemberton .remove = ux500_remove, 3854bc36fd3SMian Yousaf Kaukab .driver = { 3864bc36fd3SMian Yousaf Kaukab .name = "musb-ux500", 387a89adb09SDaniel Mack .pm = &ux500_pm_ops, 388313bdb11SLee Jones .of_match_table = ux500_match, 3894bc36fd3SMian Yousaf Kaukab }, 3904bc36fd3SMian Yousaf Kaukab }; 3914bc36fd3SMian Yousaf Kaukab 3924bc36fd3SMian Yousaf Kaukab MODULE_DESCRIPTION("UX500 MUSB Glue Layer"); 3934bc36fd3SMian Yousaf Kaukab MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>"); 3944bc36fd3SMian Yousaf Kaukab MODULE_LICENSE("GPL v2"); 3950e7090a6SSrinivas Kandagatla module_platform_driver(ux500_driver); 396