15fd54aceSGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0+ 24bc36fd3SMian Yousaf Kaukab /* 34bc36fd3SMian Yousaf Kaukab * Copyright (C) 2010 ST-Ericsson AB 44bc36fd3SMian Yousaf Kaukab * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> 54bc36fd3SMian Yousaf Kaukab * 64bc36fd3SMian Yousaf Kaukab * Based on omap2430.c 74bc36fd3SMian Yousaf Kaukab * 84bc36fd3SMian Yousaf Kaukab * This program is free software; you can redistribute it and/or modify 94bc36fd3SMian Yousaf Kaukab * it under the terms of the GNU General Public License as published by 104bc36fd3SMian Yousaf Kaukab * the Free Software Foundation; either version 2 of the License, or 114bc36fd3SMian Yousaf Kaukab * (at your option) any later version. 124bc36fd3SMian Yousaf Kaukab * 134bc36fd3SMian Yousaf Kaukab * This program is distributed in the hope that it will be useful, 144bc36fd3SMian Yousaf Kaukab * but WITHOUT ANY WARRANTY; without even the implied warranty of 154bc36fd3SMian Yousaf Kaukab * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 164bc36fd3SMian Yousaf Kaukab * GNU General Public License for more details. 174bc36fd3SMian Yousaf Kaukab * 184bc36fd3SMian Yousaf Kaukab * You should have received a copy of the GNU General Public License 194bc36fd3SMian Yousaf Kaukab * along with this program; if not, write to the Free Software 204bc36fd3SMian Yousaf Kaukab * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 214bc36fd3SMian Yousaf Kaukab */ 224bc36fd3SMian Yousaf Kaukab 234bc36fd3SMian Yousaf Kaukab #include <linux/module.h> 244bc36fd3SMian Yousaf Kaukab #include <linux/kernel.h> 254bc36fd3SMian Yousaf Kaukab #include <linux/clk.h> 26ded017eeSKishon Vijay Abraham I #include <linux/err.h> 274bc36fd3SMian Yousaf Kaukab #include <linux/io.h> 28313bdb11SLee Jones #include <linux/of.h> 294bc36fd3SMian Yousaf Kaukab #include <linux/platform_device.h> 30af6882beSFabio Baltieri #include <linux/usb/musb-ux500.h> 314bc36fd3SMian Yousaf Kaukab 324bc36fd3SMian Yousaf Kaukab #include "musb_core.h" 334bc36fd3SMian Yousaf Kaukab 341e572aa5SBhumika Goyal static const struct musb_hdrc_config ux500_musb_hdrc_config = { 35a20b1b79SLee Jones .multipoint = true, 36a20b1b79SLee Jones .dyn_fifo = true, 37a20b1b79SLee Jones .num_eps = 16, 38a20b1b79SLee Jones .ram_bits = 16, 39a20b1b79SLee Jones }; 40a20b1b79SLee Jones 414bc36fd3SMian Yousaf Kaukab struct ux500_glue { 424bc36fd3SMian Yousaf Kaukab struct device *dev; 434bc36fd3SMian Yousaf Kaukab struct platform_device *musb; 444bc36fd3SMian Yousaf Kaukab struct clk *clk; 454bc36fd3SMian Yousaf Kaukab }; 464bc36fd3SMian Yousaf Kaukab #define glue_to_musb(g) platform_get_drvdata(g->musb) 474bc36fd3SMian Yousaf Kaukab 48996a9d26SFabio Baltieri static void ux500_musb_set_vbus(struct musb *musb, int is_on) 49996a9d26SFabio Baltieri { 50996a9d26SFabio Baltieri u8 devctl; 51996a9d26SFabio Baltieri unsigned long timeout = jiffies + msecs_to_jiffies(1000); 52996a9d26SFabio Baltieri /* HDRC controls CPEN, but beware current surges during device 53996a9d26SFabio Baltieri * connect. They can trigger transient overcurrent conditions 54996a9d26SFabio Baltieri * that must be ignored. 55996a9d26SFabio Baltieri */ 56996a9d26SFabio Baltieri 57996a9d26SFabio Baltieri devctl = musb_readb(musb->mregs, MUSB_DEVCTL); 58996a9d26SFabio Baltieri 59996a9d26SFabio Baltieri if (is_on) { 60e47d9254SAntoine Tenart if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) { 61996a9d26SFabio Baltieri /* start the session */ 62996a9d26SFabio Baltieri devctl |= MUSB_DEVCTL_SESSION; 63996a9d26SFabio Baltieri musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); 64996a9d26SFabio Baltieri /* 65996a9d26SFabio Baltieri * Wait for the musb to set as A device to enable the 66996a9d26SFabio Baltieri * VBUS 67996a9d26SFabio Baltieri */ 68996a9d26SFabio Baltieri while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) { 69996a9d26SFabio Baltieri 70996a9d26SFabio Baltieri if (time_after(jiffies, timeout)) { 71996a9d26SFabio Baltieri dev_err(musb->controller, 72996a9d26SFabio Baltieri "configured as A device timeout"); 73996a9d26SFabio Baltieri break; 74996a9d26SFabio Baltieri } 75996a9d26SFabio Baltieri } 76996a9d26SFabio Baltieri 77996a9d26SFabio Baltieri } else { 78996a9d26SFabio Baltieri musb->is_active = 1; 79996a9d26SFabio Baltieri musb->xceiv->otg->default_a = 1; 80e47d9254SAntoine Tenart musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; 81996a9d26SFabio Baltieri devctl |= MUSB_DEVCTL_SESSION; 82996a9d26SFabio Baltieri MUSB_HST_MODE(musb); 83996a9d26SFabio Baltieri } 84996a9d26SFabio Baltieri } else { 85996a9d26SFabio Baltieri musb->is_active = 0; 86996a9d26SFabio Baltieri 87996a9d26SFabio Baltieri /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and jumping 88996a9d26SFabio Baltieri * right to B_IDLE... 89996a9d26SFabio Baltieri */ 90996a9d26SFabio Baltieri musb->xceiv->otg->default_a = 0; 91996a9d26SFabio Baltieri devctl &= ~MUSB_DEVCTL_SESSION; 92996a9d26SFabio Baltieri MUSB_DEV_MODE(musb); 93996a9d26SFabio Baltieri } 94996a9d26SFabio Baltieri musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); 95996a9d26SFabio Baltieri 96996a9d26SFabio Baltieri /* 97996a9d26SFabio Baltieri * Devctl values will be updated after vbus goes below 98996a9d26SFabio Baltieri * session_valid. The time taken depends on the capacitance 99996a9d26SFabio Baltieri * on VBUS line. The max discharge time can be upto 1 sec 100996a9d26SFabio Baltieri * as per the spec. Typically on our platform, it is 200ms 101996a9d26SFabio Baltieri */ 102996a9d26SFabio Baltieri if (!is_on) 103996a9d26SFabio Baltieri mdelay(200); 104996a9d26SFabio Baltieri 105996a9d26SFabio Baltieri dev_dbg(musb->controller, "VBUS %s, devctl %02x\n", 106e47d9254SAntoine Tenart usb_otg_state_string(musb->xceiv->otg->state), 107996a9d26SFabio Baltieri musb_readb(musb->mregs, MUSB_DEVCTL)); 108996a9d26SFabio Baltieri } 109996a9d26SFabio Baltieri 1100135522cSFabio Baltieri static int musb_otg_notifications(struct notifier_block *nb, 1110135522cSFabio Baltieri unsigned long event, void *unused) 1120135522cSFabio Baltieri { 1130135522cSFabio Baltieri struct musb *musb = container_of(nb, struct musb, nb); 1140135522cSFabio Baltieri 1150135522cSFabio Baltieri dev_dbg(musb->controller, "musb_otg_notifications %ld %s\n", 116e47d9254SAntoine Tenart event, usb_otg_state_string(musb->xceiv->otg->state)); 1170135522cSFabio Baltieri 1180135522cSFabio Baltieri switch (event) { 119af6882beSFabio Baltieri case UX500_MUSB_ID: 1200135522cSFabio Baltieri dev_dbg(musb->controller, "ID GND\n"); 1210135522cSFabio Baltieri ux500_musb_set_vbus(musb, 1); 1220135522cSFabio Baltieri break; 123af6882beSFabio Baltieri case UX500_MUSB_VBUS: 1240135522cSFabio Baltieri dev_dbg(musb->controller, "VBUS Connect\n"); 1250135522cSFabio Baltieri break; 126af6882beSFabio Baltieri case UX500_MUSB_NONE: 1270135522cSFabio Baltieri dev_dbg(musb->controller, "VBUS Disconnect\n"); 1280135522cSFabio Baltieri if (is_host_active(musb)) 1290135522cSFabio Baltieri ux500_musb_set_vbus(musb, 0); 1300135522cSFabio Baltieri else 131e47d9254SAntoine Tenart musb->xceiv->otg->state = OTG_STATE_B_IDLE; 1320135522cSFabio Baltieri break; 1330135522cSFabio Baltieri default: 1340135522cSFabio Baltieri dev_dbg(musb->controller, "ID float\n"); 1350135522cSFabio Baltieri return NOTIFY_DONE; 1360135522cSFabio Baltieri } 1370135522cSFabio Baltieri return NOTIFY_OK; 1380135522cSFabio Baltieri } 1390135522cSFabio Baltieri 140baef653aSPhilippe De Swert static irqreturn_t ux500_musb_interrupt(int irq, void *__hci) 141baef653aSPhilippe De Swert { 142baef653aSPhilippe De Swert unsigned long flags; 143baef653aSPhilippe De Swert irqreturn_t retval = IRQ_NONE; 144baef653aSPhilippe De Swert struct musb *musb = __hci; 145baef653aSPhilippe De Swert 146baef653aSPhilippe De Swert spin_lock_irqsave(&musb->lock, flags); 147baef653aSPhilippe De Swert 148baef653aSPhilippe De Swert musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); 149baef653aSPhilippe De Swert musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); 150baef653aSPhilippe De Swert musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); 151baef653aSPhilippe De Swert 152baef653aSPhilippe De Swert if (musb->int_usb || musb->int_tx || musb->int_rx) 153baef653aSPhilippe De Swert retval = musb_interrupt(musb); 154baef653aSPhilippe De Swert 155baef653aSPhilippe De Swert spin_unlock_irqrestore(&musb->lock, flags); 156baef653aSPhilippe De Swert 157baef653aSPhilippe De Swert return retval; 158baef653aSPhilippe De Swert } 159baef653aSPhilippe De Swert 1604bc36fd3SMian Yousaf Kaukab static int ux500_musb_init(struct musb *musb) 1614bc36fd3SMian Yousaf Kaukab { 1620135522cSFabio Baltieri int status; 1630135522cSFabio Baltieri 164662dca54SKishon Vijay Abraham I musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); 165ded017eeSKishon Vijay Abraham I if (IS_ERR_OR_NULL(musb->xceiv)) { 1664bc36fd3SMian Yousaf Kaukab pr_err("HS USB OTG: no transceiver configured\n"); 16725736e0cSMing Lei return -EPROBE_DEFER; 1684bc36fd3SMian Yousaf Kaukab } 1694bc36fd3SMian Yousaf Kaukab 1700135522cSFabio Baltieri musb->nb.notifier_call = musb_otg_notifications; 1710135522cSFabio Baltieri status = usb_register_notifier(musb->xceiv, &musb->nb); 1720135522cSFabio Baltieri if (status < 0) { 1730135522cSFabio Baltieri dev_dbg(musb->controller, "notification register failed\n"); 1740135522cSFabio Baltieri return status; 1750135522cSFabio Baltieri } 1760135522cSFabio Baltieri 177baef653aSPhilippe De Swert musb->isr = ux500_musb_interrupt; 178baef653aSPhilippe De Swert 1794bc36fd3SMian Yousaf Kaukab return 0; 1804bc36fd3SMian Yousaf Kaukab } 1814bc36fd3SMian Yousaf Kaukab 1824bc36fd3SMian Yousaf Kaukab static int ux500_musb_exit(struct musb *musb) 1834bc36fd3SMian Yousaf Kaukab { 1840135522cSFabio Baltieri usb_unregister_notifier(musb->xceiv, &musb->nb); 1850135522cSFabio Baltieri 186721002ecSKishon Vijay Abraham I usb_put_phy(musb->xceiv); 1874bc36fd3SMian Yousaf Kaukab 1884bc36fd3SMian Yousaf Kaukab return 0; 1894bc36fd3SMian Yousaf Kaukab } 1904bc36fd3SMian Yousaf Kaukab 1914bc36fd3SMian Yousaf Kaukab static const struct musb_platform_ops ux500_ops = { 192f8e9f34fSTony Lindgren .quirks = MUSB_DMA_UX500 | MUSB_INDEXED_EP, 1937f6283edSTony Lindgren #ifdef CONFIG_USB_UX500_DMA 1947f6283edSTony Lindgren .dma_init = ux500_dma_controller_create, 1957f6283edSTony Lindgren .dma_exit = ux500_dma_controller_destroy, 1967f6283edSTony Lindgren #endif 1974bc36fd3SMian Yousaf Kaukab .init = ux500_musb_init, 1984bc36fd3SMian Yousaf Kaukab .exit = ux500_musb_exit, 1998a77f05aSTony Lindgren .fifo_mode = 5, 200996a9d26SFabio Baltieri 201996a9d26SFabio Baltieri .set_vbus = ux500_musb_set_vbus, 2024bc36fd3SMian Yousaf Kaukab }; 2034bc36fd3SMian Yousaf Kaukab 204313bdb11SLee Jones static struct musb_hdrc_platform_data * 205313bdb11SLee Jones ux500_of_probe(struct platform_device *pdev, struct device_node *np) 206313bdb11SLee Jones { 207313bdb11SLee Jones struct musb_hdrc_platform_data *pdata; 208313bdb11SLee Jones const char *mode; 209313bdb11SLee Jones int strlen; 210313bdb11SLee Jones 211313bdb11SLee Jones pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); 212313bdb11SLee Jones if (!pdata) 213313bdb11SLee Jones return NULL; 214313bdb11SLee Jones 215313bdb11SLee Jones mode = of_get_property(np, "dr_mode", &strlen); 216313bdb11SLee Jones if (!mode) { 217313bdb11SLee Jones dev_err(&pdev->dev, "No 'dr_mode' property found\n"); 218313bdb11SLee Jones return NULL; 219313bdb11SLee Jones } 220313bdb11SLee Jones 221313bdb11SLee Jones if (strlen > 0) { 222313bdb11SLee Jones if (!strcmp(mode, "host")) 223313bdb11SLee Jones pdata->mode = MUSB_HOST; 224313bdb11SLee Jones if (!strcmp(mode, "otg")) 225313bdb11SLee Jones pdata->mode = MUSB_OTG; 226313bdb11SLee Jones if (!strcmp(mode, "peripheral")) 227313bdb11SLee Jones pdata->mode = MUSB_PERIPHERAL; 228313bdb11SLee Jones } 229313bdb11SLee Jones 230313bdb11SLee Jones return pdata; 231313bdb11SLee Jones } 232313bdb11SLee Jones 23341ac7b3aSBill Pemberton static int ux500_probe(struct platform_device *pdev) 2344bc36fd3SMian Yousaf Kaukab { 23509fc7d22SFelipe Balbi struct resource musb_resources[2]; 236c1a7d67cSJingoo Han struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); 237313bdb11SLee Jones struct device_node *np = pdev->dev.of_node; 2384bc36fd3SMian Yousaf Kaukab struct platform_device *musb; 2394bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue; 2404bc36fd3SMian Yousaf Kaukab struct clk *clk; 2414bc36fd3SMian Yousaf Kaukab int ret = -ENOMEM; 2424bc36fd3SMian Yousaf Kaukab 243313bdb11SLee Jones if (!pdata) { 244313bdb11SLee Jones if (np) { 245313bdb11SLee Jones pdata = ux500_of_probe(pdev, np); 246313bdb11SLee Jones if (!pdata) 247313bdb11SLee Jones goto err0; 248313bdb11SLee Jones 249313bdb11SLee Jones pdev->dev.platform_data = pdata; 250313bdb11SLee Jones } else { 251313bdb11SLee Jones dev_err(&pdev->dev, "no pdata or device tree found\n"); 252313bdb11SLee Jones goto err0; 253313bdb11SLee Jones } 254313bdb11SLee Jones } 255313bdb11SLee Jones 256d7dc5bdeSHimangi Saraogi glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); 25724c611b9SPeter Chen if (!glue) 2584bc36fd3SMian Yousaf Kaukab goto err0; 2594bc36fd3SMian Yousaf Kaukab 2602f771164SSebastian Andrzej Siewior musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); 2614bc36fd3SMian Yousaf Kaukab if (!musb) { 2624bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to allocate musb device\n"); 263d7dc5bdeSHimangi Saraogi goto err0; 2644bc36fd3SMian Yousaf Kaukab } 2654bc36fd3SMian Yousaf Kaukab 266d7dc5bdeSHimangi Saraogi clk = devm_clk_get(&pdev->dev, NULL); 2674bc36fd3SMian Yousaf Kaukab if (IS_ERR(clk)) { 2684bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to get clock\n"); 2694bc36fd3SMian Yousaf Kaukab ret = PTR_ERR(clk); 270d7dc5bdeSHimangi Saraogi goto err1; 2714bc36fd3SMian Yousaf Kaukab } 2724bc36fd3SMian Yousaf Kaukab 27399d17cfaSFabio Baltieri ret = clk_prepare_enable(clk); 2744bc36fd3SMian Yousaf Kaukab if (ret) { 2754bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to enable clock\n"); 276d7dc5bdeSHimangi Saraogi goto err1; 2774bc36fd3SMian Yousaf Kaukab } 2784bc36fd3SMian Yousaf Kaukab 2794bc36fd3SMian Yousaf Kaukab musb->dev.parent = &pdev->dev; 2801e6eebb4SLee Jones musb->dev.dma_mask = &pdev->dev.coherent_dma_mask; 28187266064SMian Yousaf Kaukab musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask; 2824bc36fd3SMian Yousaf Kaukab 2834bc36fd3SMian Yousaf Kaukab glue->dev = &pdev->dev; 2844bc36fd3SMian Yousaf Kaukab glue->musb = musb; 2854bc36fd3SMian Yousaf Kaukab glue->clk = clk; 2864bc36fd3SMian Yousaf Kaukab 2874bc36fd3SMian Yousaf Kaukab pdata->platform_ops = &ux500_ops; 288a20b1b79SLee Jones pdata->config = &ux500_musb_hdrc_config; 2894bc36fd3SMian Yousaf Kaukab 2904bc36fd3SMian Yousaf Kaukab platform_set_drvdata(pdev, glue); 2914bc36fd3SMian Yousaf Kaukab 29209fc7d22SFelipe Balbi memset(musb_resources, 0x00, sizeof(*musb_resources) * 29309fc7d22SFelipe Balbi ARRAY_SIZE(musb_resources)); 29409fc7d22SFelipe Balbi 29509fc7d22SFelipe Balbi musb_resources[0].name = pdev->resource[0].name; 29609fc7d22SFelipe Balbi musb_resources[0].start = pdev->resource[0].start; 29709fc7d22SFelipe Balbi musb_resources[0].end = pdev->resource[0].end; 29809fc7d22SFelipe Balbi musb_resources[0].flags = pdev->resource[0].flags; 29909fc7d22SFelipe Balbi 30009fc7d22SFelipe Balbi musb_resources[1].name = pdev->resource[1].name; 30109fc7d22SFelipe Balbi musb_resources[1].start = pdev->resource[1].start; 30209fc7d22SFelipe Balbi musb_resources[1].end = pdev->resource[1].end; 30309fc7d22SFelipe Balbi musb_resources[1].flags = pdev->resource[1].flags; 30409fc7d22SFelipe Balbi 30509fc7d22SFelipe Balbi ret = platform_device_add_resources(musb, musb_resources, 30609fc7d22SFelipe Balbi ARRAY_SIZE(musb_resources)); 3074bc36fd3SMian Yousaf Kaukab if (ret) { 3084bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to add resources\n"); 309d7dc5bdeSHimangi Saraogi goto err2; 3104bc36fd3SMian Yousaf Kaukab } 3114bc36fd3SMian Yousaf Kaukab 3124bc36fd3SMian Yousaf Kaukab ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); 3134bc36fd3SMian Yousaf Kaukab if (ret) { 3144bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to add platform_data\n"); 315d7dc5bdeSHimangi Saraogi goto err2; 3164bc36fd3SMian Yousaf Kaukab } 3174bc36fd3SMian Yousaf Kaukab 3184bc36fd3SMian Yousaf Kaukab ret = platform_device_add(musb); 3194bc36fd3SMian Yousaf Kaukab if (ret) { 3204bc36fd3SMian Yousaf Kaukab dev_err(&pdev->dev, "failed to register musb device\n"); 321d7dc5bdeSHimangi Saraogi goto err2; 3224bc36fd3SMian Yousaf Kaukab } 3234bc36fd3SMian Yousaf Kaukab 3244bc36fd3SMian Yousaf Kaukab return 0; 3254bc36fd3SMian Yousaf Kaukab 326d7dc5bdeSHimangi Saraogi err2: 32799d17cfaSFabio Baltieri clk_disable_unprepare(clk); 3284bc36fd3SMian Yousaf Kaukab 3294bc36fd3SMian Yousaf Kaukab err1: 330d7dc5bdeSHimangi Saraogi platform_device_put(musb); 3314bc36fd3SMian Yousaf Kaukab 3324bc36fd3SMian Yousaf Kaukab err0: 3334bc36fd3SMian Yousaf Kaukab return ret; 3344bc36fd3SMian Yousaf Kaukab } 3354bc36fd3SMian Yousaf Kaukab 336fb4e98abSBill Pemberton static int ux500_remove(struct platform_device *pdev) 3374bc36fd3SMian Yousaf Kaukab { 3384bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = platform_get_drvdata(pdev); 3394bc36fd3SMian Yousaf Kaukab 3404b0de6f3SWei Yongjun platform_device_unregister(glue->musb); 34199d17cfaSFabio Baltieri clk_disable_unprepare(glue->clk); 3424bc36fd3SMian Yousaf Kaukab 3434bc36fd3SMian Yousaf Kaukab return 0; 3444bc36fd3SMian Yousaf Kaukab } 3454bc36fd3SMian Yousaf Kaukab 34630d09223SFelipe Balbi #ifdef CONFIG_PM_SLEEP 3474bc36fd3SMian Yousaf Kaukab static int ux500_suspend(struct device *dev) 3484bc36fd3SMian Yousaf Kaukab { 3494bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = dev_get_drvdata(dev); 3504bc36fd3SMian Yousaf Kaukab struct musb *musb = glue_to_musb(glue); 3514bc36fd3SMian Yousaf Kaukab 35279c5623fSUlf Hansson if (musb) 353b96d3b08SHeikki Krogerus usb_phy_set_suspend(musb->xceiv, 1); 35479c5623fSUlf Hansson 35599d17cfaSFabio Baltieri clk_disable_unprepare(glue->clk); 3564bc36fd3SMian Yousaf Kaukab 3574bc36fd3SMian Yousaf Kaukab return 0; 3584bc36fd3SMian Yousaf Kaukab } 3594bc36fd3SMian Yousaf Kaukab 3604bc36fd3SMian Yousaf Kaukab static int ux500_resume(struct device *dev) 3614bc36fd3SMian Yousaf Kaukab { 3624bc36fd3SMian Yousaf Kaukab struct ux500_glue *glue = dev_get_drvdata(dev); 3634bc36fd3SMian Yousaf Kaukab struct musb *musb = glue_to_musb(glue); 3644bc36fd3SMian Yousaf Kaukab int ret; 3654bc36fd3SMian Yousaf Kaukab 36699d17cfaSFabio Baltieri ret = clk_prepare_enable(glue->clk); 3674bc36fd3SMian Yousaf Kaukab if (ret) { 3684bc36fd3SMian Yousaf Kaukab dev_err(dev, "failed to enable clock\n"); 3694bc36fd3SMian Yousaf Kaukab return ret; 3704bc36fd3SMian Yousaf Kaukab } 3714bc36fd3SMian Yousaf Kaukab 37279c5623fSUlf Hansson if (musb) 373b96d3b08SHeikki Krogerus usb_phy_set_suspend(musb->xceiv, 0); 3744bc36fd3SMian Yousaf Kaukab 3754bc36fd3SMian Yousaf Kaukab return 0; 3764bc36fd3SMian Yousaf Kaukab } 3774bc36fd3SMian Yousaf Kaukab #endif 3784bc36fd3SMian Yousaf Kaukab 379a89adb09SDaniel Mack static SIMPLE_DEV_PM_OPS(ux500_pm_ops, ux500_suspend, ux500_resume); 380a89adb09SDaniel Mack 381313bdb11SLee Jones static const struct of_device_id ux500_match[] = { 382313bdb11SLee Jones { .compatible = "stericsson,db8500-musb", }, 383313bdb11SLee Jones {} 384313bdb11SLee Jones }; 385313bdb11SLee Jones 386523d5dafSLuis de Bethencourt MODULE_DEVICE_TABLE(of, ux500_match); 387523d5dafSLuis de Bethencourt 3884bc36fd3SMian Yousaf Kaukab static struct platform_driver ux500_driver = { 389e9e8c85eSFelipe Balbi .probe = ux500_probe, 3907690417dSBill Pemberton .remove = ux500_remove, 3914bc36fd3SMian Yousaf Kaukab .driver = { 3924bc36fd3SMian Yousaf Kaukab .name = "musb-ux500", 393a89adb09SDaniel Mack .pm = &ux500_pm_ops, 394313bdb11SLee Jones .of_match_table = ux500_match, 3954bc36fd3SMian Yousaf Kaukab }, 3964bc36fd3SMian Yousaf Kaukab }; 3974bc36fd3SMian Yousaf Kaukab 3984bc36fd3SMian Yousaf Kaukab MODULE_DESCRIPTION("UX500 MUSB Glue Layer"); 3994bc36fd3SMian Yousaf Kaukab MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>"); 4004bc36fd3SMian Yousaf Kaukab MODULE_LICENSE("GPL v2"); 4010e7090a6SSrinivas Kandagatla module_platform_driver(ux500_driver); 402