172246da4SFelipe Balbi /** 272246da4SFelipe Balbi * core.c - DesignWare USB3 DRD Controller Core file 372246da4SFelipe Balbi * 472246da4SFelipe Balbi * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 572246da4SFelipe Balbi * 672246da4SFelipe Balbi * Authors: Felipe Balbi <balbi@ti.com>, 772246da4SFelipe Balbi * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 872246da4SFelipe Balbi * 95945f789SFelipe Balbi * This program is free software: you can redistribute it and/or modify 105945f789SFelipe Balbi * it under the terms of the GNU General Public License version 2 of 115945f789SFelipe Balbi * the License as published by the Free Software Foundation. 1272246da4SFelipe Balbi * 135945f789SFelipe Balbi * This program is distributed in the hope that it will be useful, 145945f789SFelipe Balbi * but WITHOUT ANY WARRANTY; without even the implied warranty of 155945f789SFelipe Balbi * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 165945f789SFelipe Balbi * GNU General Public License for more details. 1772246da4SFelipe Balbi * 185945f789SFelipe Balbi * You should have received a copy of the GNU General Public License 195945f789SFelipe Balbi * along with this program. If not, see <http://www.gnu.org/licenses/>. 2072246da4SFelipe Balbi */ 2172246da4SFelipe Balbi 22a72e658bSFelipe Balbi #include <linux/module.h> 2372246da4SFelipe Balbi #include <linux/kernel.h> 2472246da4SFelipe Balbi #include <linux/slab.h> 2572246da4SFelipe Balbi #include <linux/spinlock.h> 2672246da4SFelipe Balbi #include <linux/platform_device.h> 2772246da4SFelipe Balbi #include <linux/pm_runtime.h> 2872246da4SFelipe Balbi #include <linux/interrupt.h> 2972246da4SFelipe Balbi #include <linux/ioport.h> 3072246da4SFelipe Balbi #include <linux/io.h> 3172246da4SFelipe Balbi #include <linux/list.h> 3272246da4SFelipe Balbi #include <linux/delay.h> 3372246da4SFelipe Balbi #include <linux/dma-mapping.h> 34457e84b6SFelipe Balbi #include <linux/of.h> 3572246da4SFelipe Balbi 3651e1e7bcSFelipe Balbi #include <linux/usb/otg.h> 3772246da4SFelipe Balbi #include <linux/usb/ch9.h> 3872246da4SFelipe Balbi #include <linux/usb/gadget.h> 39f7e846f0SFelipe Balbi #include <linux/usb/of.h> 40a45c82b8SRuchika Kharwar #include <linux/usb/otg.h> 4172246da4SFelipe Balbi 426462cbd5SFelipe Balbi #include "platform_data.h" 4372246da4SFelipe Balbi #include "core.h" 4472246da4SFelipe Balbi #include "gadget.h" 4572246da4SFelipe Balbi #include "io.h" 4672246da4SFelipe Balbi 4772246da4SFelipe Balbi #include "debug.h" 4872246da4SFelipe Balbi 498300dd23SFelipe Balbi /* -------------------------------------------------------------------------- */ 508300dd23SFelipe Balbi 513140e8cbSSebastian Andrzej Siewior void dwc3_set_mode(struct dwc3 *dwc, u32 mode) 523140e8cbSSebastian Andrzej Siewior { 533140e8cbSSebastian Andrzej Siewior u32 reg; 543140e8cbSSebastian Andrzej Siewior 553140e8cbSSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_GCTL); 563140e8cbSSebastian Andrzej Siewior reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); 573140e8cbSSebastian Andrzej Siewior reg |= DWC3_GCTL_PRTCAPDIR(mode); 583140e8cbSSebastian Andrzej Siewior dwc3_writel(dwc->regs, DWC3_GCTL, reg); 593140e8cbSSebastian Andrzej Siewior } 608300dd23SFelipe Balbi 6172246da4SFelipe Balbi /** 6272246da4SFelipe Balbi * dwc3_core_soft_reset - Issues core soft reset and PHY reset 6372246da4SFelipe Balbi * @dwc: pointer to our context structure 6472246da4SFelipe Balbi */ 6572246da4SFelipe Balbi static void dwc3_core_soft_reset(struct dwc3 *dwc) 6672246da4SFelipe Balbi { 6772246da4SFelipe Balbi u32 reg; 6872246da4SFelipe Balbi 6972246da4SFelipe Balbi /* Before Resetting PHY, put Core in Reset */ 7072246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 7172246da4SFelipe Balbi reg |= DWC3_GCTL_CORESOFTRESET; 7272246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 7372246da4SFelipe Balbi 7472246da4SFelipe Balbi /* Assert USB3 PHY reset */ 7572246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 7672246da4SFelipe Balbi reg |= DWC3_GUSB3PIPECTL_PHYSOFTRST; 7772246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 7872246da4SFelipe Balbi 7972246da4SFelipe Balbi /* Assert USB2 PHY reset */ 8072246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 8172246da4SFelipe Balbi reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST; 8272246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 8372246da4SFelipe Balbi 8451e1e7bcSFelipe Balbi usb_phy_init(dwc->usb2_phy); 8551e1e7bcSFelipe Balbi usb_phy_init(dwc->usb3_phy); 8672246da4SFelipe Balbi mdelay(100); 8772246da4SFelipe Balbi 8872246da4SFelipe Balbi /* Clear USB3 PHY reset */ 8972246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 9072246da4SFelipe Balbi reg &= ~DWC3_GUSB3PIPECTL_PHYSOFTRST; 9172246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 9272246da4SFelipe Balbi 9372246da4SFelipe Balbi /* Clear USB2 PHY reset */ 9472246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 9572246da4SFelipe Balbi reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST; 9672246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 9772246da4SFelipe Balbi 9845627ac6SPratyush Anand mdelay(100); 9945627ac6SPratyush Anand 10072246da4SFelipe Balbi /* After PHYs are stable we can take Core out of reset state */ 10172246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 10272246da4SFelipe Balbi reg &= ~DWC3_GCTL_CORESOFTRESET; 10372246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 10472246da4SFelipe Balbi } 10572246da4SFelipe Balbi 10672246da4SFelipe Balbi /** 10772246da4SFelipe Balbi * dwc3_free_one_event_buffer - Frees one event buffer 10872246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 10972246da4SFelipe Balbi * @evt: Pointer to event buffer to be freed 11072246da4SFelipe Balbi */ 11172246da4SFelipe Balbi static void dwc3_free_one_event_buffer(struct dwc3 *dwc, 11272246da4SFelipe Balbi struct dwc3_event_buffer *evt) 11372246da4SFelipe Balbi { 11472246da4SFelipe Balbi dma_free_coherent(dwc->dev, evt->length, evt->buf, evt->dma); 11572246da4SFelipe Balbi } 11672246da4SFelipe Balbi 11772246da4SFelipe Balbi /** 1181d046793SPaul Zimmerman * dwc3_alloc_one_event_buffer - Allocates one event buffer structure 11972246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 12072246da4SFelipe Balbi * @length: size of the event buffer 12172246da4SFelipe Balbi * 1221d046793SPaul Zimmerman * Returns a pointer to the allocated event buffer structure on success 12372246da4SFelipe Balbi * otherwise ERR_PTR(errno). 12472246da4SFelipe Balbi */ 12567d0b500SFelipe Balbi static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc, 12667d0b500SFelipe Balbi unsigned length) 12772246da4SFelipe Balbi { 12872246da4SFelipe Balbi struct dwc3_event_buffer *evt; 12972246da4SFelipe Balbi 130380f0d28SFelipe Balbi evt = devm_kzalloc(dwc->dev, sizeof(*evt), GFP_KERNEL); 13172246da4SFelipe Balbi if (!evt) 13272246da4SFelipe Balbi return ERR_PTR(-ENOMEM); 13372246da4SFelipe Balbi 13472246da4SFelipe Balbi evt->dwc = dwc; 13572246da4SFelipe Balbi evt->length = length; 13672246da4SFelipe Balbi evt->buf = dma_alloc_coherent(dwc->dev, length, 13772246da4SFelipe Balbi &evt->dma, GFP_KERNEL); 138e32672f0SFelipe Balbi if (!evt->buf) 13972246da4SFelipe Balbi return ERR_PTR(-ENOMEM); 14072246da4SFelipe Balbi 14172246da4SFelipe Balbi return evt; 14272246da4SFelipe Balbi } 14372246da4SFelipe Balbi 14472246da4SFelipe Balbi /** 14572246da4SFelipe Balbi * dwc3_free_event_buffers - frees all allocated event buffers 14672246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 14772246da4SFelipe Balbi */ 14872246da4SFelipe Balbi static void dwc3_free_event_buffers(struct dwc3 *dwc) 14972246da4SFelipe Balbi { 15072246da4SFelipe Balbi struct dwc3_event_buffer *evt; 15172246da4SFelipe Balbi int i; 15272246da4SFelipe Balbi 1539f622b2aSFelipe Balbi for (i = 0; i < dwc->num_event_buffers; i++) { 15472246da4SFelipe Balbi evt = dwc->ev_buffs[i]; 15564b6c8a7SAnton Tikhomirov if (evt) 15672246da4SFelipe Balbi dwc3_free_one_event_buffer(dwc, evt); 15772246da4SFelipe Balbi } 15872246da4SFelipe Balbi } 15972246da4SFelipe Balbi 16072246da4SFelipe Balbi /** 16172246da4SFelipe Balbi * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length 1621d046793SPaul Zimmerman * @dwc: pointer to our controller context structure 16372246da4SFelipe Balbi * @length: size of event buffer 16472246da4SFelipe Balbi * 1651d046793SPaul Zimmerman * Returns 0 on success otherwise negative errno. In the error case, dwc 16672246da4SFelipe Balbi * may contain some buffers allocated but not all which were requested. 16772246da4SFelipe Balbi */ 16841ac7b3aSBill Pemberton static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) 16972246da4SFelipe Balbi { 1709f622b2aSFelipe Balbi int num; 17172246da4SFelipe Balbi int i; 17272246da4SFelipe Balbi 1739f622b2aSFelipe Balbi num = DWC3_NUM_INT(dwc->hwparams.hwparams1); 1749f622b2aSFelipe Balbi dwc->num_event_buffers = num; 1759f622b2aSFelipe Balbi 176380f0d28SFelipe Balbi dwc->ev_buffs = devm_kzalloc(dwc->dev, sizeof(*dwc->ev_buffs) * num, 177380f0d28SFelipe Balbi GFP_KERNEL); 178457d3f21SFelipe Balbi if (!dwc->ev_buffs) { 179457d3f21SFelipe Balbi dev_err(dwc->dev, "can't allocate event buffers array\n"); 180457d3f21SFelipe Balbi return -ENOMEM; 181457d3f21SFelipe Balbi } 182457d3f21SFelipe Balbi 18372246da4SFelipe Balbi for (i = 0; i < num; i++) { 18472246da4SFelipe Balbi struct dwc3_event_buffer *evt; 18572246da4SFelipe Balbi 18672246da4SFelipe Balbi evt = dwc3_alloc_one_event_buffer(dwc, length); 18772246da4SFelipe Balbi if (IS_ERR(evt)) { 18872246da4SFelipe Balbi dev_err(dwc->dev, "can't allocate event buffer\n"); 18972246da4SFelipe Balbi return PTR_ERR(evt); 19072246da4SFelipe Balbi } 19172246da4SFelipe Balbi dwc->ev_buffs[i] = evt; 19272246da4SFelipe Balbi } 19372246da4SFelipe Balbi 19472246da4SFelipe Balbi return 0; 19572246da4SFelipe Balbi } 19672246da4SFelipe Balbi 19772246da4SFelipe Balbi /** 19872246da4SFelipe Balbi * dwc3_event_buffers_setup - setup our allocated event buffers 1991d046793SPaul Zimmerman * @dwc: pointer to our controller context structure 20072246da4SFelipe Balbi * 20172246da4SFelipe Balbi * Returns 0 on success otherwise negative errno. 20272246da4SFelipe Balbi */ 2037acd85e0SPaul Zimmerman static int dwc3_event_buffers_setup(struct dwc3 *dwc) 20472246da4SFelipe Balbi { 20572246da4SFelipe Balbi struct dwc3_event_buffer *evt; 20672246da4SFelipe Balbi int n; 20772246da4SFelipe Balbi 2089f622b2aSFelipe Balbi for (n = 0; n < dwc->num_event_buffers; n++) { 20972246da4SFelipe Balbi evt = dwc->ev_buffs[n]; 21072246da4SFelipe Balbi dev_dbg(dwc->dev, "Event buf %p dma %08llx length %d\n", 21172246da4SFelipe Balbi evt->buf, (unsigned long long) evt->dma, 21272246da4SFelipe Balbi evt->length); 21372246da4SFelipe Balbi 2147acd85e0SPaul Zimmerman evt->lpos = 0; 2157acd85e0SPaul Zimmerman 21672246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 21772246da4SFelipe Balbi lower_32_bits(evt->dma)); 21872246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 21972246da4SFelipe Balbi upper_32_bits(evt->dma)); 22072246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 22172246da4SFelipe Balbi evt->length & 0xffff); 22272246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); 22372246da4SFelipe Balbi } 22472246da4SFelipe Balbi 22572246da4SFelipe Balbi return 0; 22672246da4SFelipe Balbi } 22772246da4SFelipe Balbi 22872246da4SFelipe Balbi static void dwc3_event_buffers_cleanup(struct dwc3 *dwc) 22972246da4SFelipe Balbi { 23072246da4SFelipe Balbi struct dwc3_event_buffer *evt; 23172246da4SFelipe Balbi int n; 23272246da4SFelipe Balbi 2339f622b2aSFelipe Balbi for (n = 0; n < dwc->num_event_buffers; n++) { 23472246da4SFelipe Balbi evt = dwc->ev_buffs[n]; 2357acd85e0SPaul Zimmerman 2367acd85e0SPaul Zimmerman evt->lpos = 0; 2377acd85e0SPaul Zimmerman 23872246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0); 23972246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0); 24072246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 0); 24172246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); 24272246da4SFelipe Balbi } 24372246da4SFelipe Balbi } 24472246da4SFelipe Balbi 245789451f6SFelipe Balbi static void dwc3_core_num_eps(struct dwc3 *dwc) 246789451f6SFelipe Balbi { 247789451f6SFelipe Balbi struct dwc3_hwparams *parms = &dwc->hwparams; 248789451f6SFelipe Balbi 249789451f6SFelipe Balbi dwc->num_in_eps = DWC3_NUM_IN_EPS(parms); 250789451f6SFelipe Balbi dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps; 251789451f6SFelipe Balbi 252789451f6SFelipe Balbi dev_vdbg(dwc->dev, "found %d IN and %d OUT endpoints\n", 253789451f6SFelipe Balbi dwc->num_in_eps, dwc->num_out_eps); 254789451f6SFelipe Balbi } 255789451f6SFelipe Balbi 25641ac7b3aSBill Pemberton static void dwc3_cache_hwparams(struct dwc3 *dwc) 25726ceca97SFelipe Balbi { 25826ceca97SFelipe Balbi struct dwc3_hwparams *parms = &dwc->hwparams; 25926ceca97SFelipe Balbi 26026ceca97SFelipe Balbi parms->hwparams0 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS0); 26126ceca97SFelipe Balbi parms->hwparams1 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS1); 26226ceca97SFelipe Balbi parms->hwparams2 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS2); 26326ceca97SFelipe Balbi parms->hwparams3 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS3); 26426ceca97SFelipe Balbi parms->hwparams4 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS4); 26526ceca97SFelipe Balbi parms->hwparams5 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS5); 26626ceca97SFelipe Balbi parms->hwparams6 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS6); 26726ceca97SFelipe Balbi parms->hwparams7 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS7); 26826ceca97SFelipe Balbi parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8); 26926ceca97SFelipe Balbi } 27026ceca97SFelipe Balbi 27172246da4SFelipe Balbi /** 27272246da4SFelipe Balbi * dwc3_core_init - Low-level initialization of DWC3 Core 27372246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 27472246da4SFelipe Balbi * 27572246da4SFelipe Balbi * Returns 0 on success otherwise negative errno. 27672246da4SFelipe Balbi */ 27741ac7b3aSBill Pemberton static int dwc3_core_init(struct dwc3 *dwc) 27872246da4SFelipe Balbi { 27972246da4SFelipe Balbi unsigned long timeout; 28072246da4SFelipe Balbi u32 reg; 28172246da4SFelipe Balbi int ret; 28272246da4SFelipe Balbi 2837650bd74SSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_GSNPSID); 2847650bd74SSebastian Andrzej Siewior /* This should read as U3 followed by revision number */ 2857650bd74SSebastian Andrzej Siewior if ((reg & DWC3_GSNPSID_MASK) != 0x55330000) { 2867650bd74SSebastian Andrzej Siewior dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n"); 2877650bd74SSebastian Andrzej Siewior ret = -ENODEV; 2887650bd74SSebastian Andrzej Siewior goto err0; 2897650bd74SSebastian Andrzej Siewior } 290248b122bSFelipe Balbi dwc->revision = reg; 2917650bd74SSebastian Andrzej Siewior 29272246da4SFelipe Balbi /* issue device SoftReset too */ 29372246da4SFelipe Balbi timeout = jiffies + msecs_to_jiffies(500); 29472246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST); 29572246da4SFelipe Balbi do { 29672246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 29772246da4SFelipe Balbi if (!(reg & DWC3_DCTL_CSFTRST)) 29872246da4SFelipe Balbi break; 29972246da4SFelipe Balbi 30072246da4SFelipe Balbi if (time_after(jiffies, timeout)) { 30172246da4SFelipe Balbi dev_err(dwc->dev, "Reset Timed Out\n"); 30272246da4SFelipe Balbi ret = -ETIMEDOUT; 30372246da4SFelipe Balbi goto err0; 30472246da4SFelipe Balbi } 30572246da4SFelipe Balbi 30672246da4SFelipe Balbi cpu_relax(); 30772246da4SFelipe Balbi } while (true); 30872246da4SFelipe Balbi 30958a0f23fSPratyush Anand dwc3_core_soft_reset(dwc); 31058a0f23fSPratyush Anand 3114878a028SSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_GCTL); 3123e87c42aSPaul Zimmerman reg &= ~DWC3_GCTL_SCALEDOWN_MASK; 3134878a028SSebastian Andrzej Siewior reg &= ~DWC3_GCTL_DISSCRAMBLE; 3144878a028SSebastian Andrzej Siewior 315164d7731SSebastian Andrzej Siewior switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) { 3164878a028SSebastian Andrzej Siewior case DWC3_GHWPARAMS1_EN_PWROPT_CLK: 3174878a028SSebastian Andrzej Siewior reg &= ~DWC3_GCTL_DSBLCLKGTNG; 3184878a028SSebastian Andrzej Siewior break; 3194878a028SSebastian Andrzej Siewior default: 3204878a028SSebastian Andrzej Siewior dev_dbg(dwc->dev, "No power optimization available\n"); 3214878a028SSebastian Andrzej Siewior } 3224878a028SSebastian Andrzej Siewior 3234878a028SSebastian Andrzej Siewior /* 3244878a028SSebastian Andrzej Siewior * WORKAROUND: DWC3 revisions <1.90a have a bug 3251d046793SPaul Zimmerman * where the device can fail to connect at SuperSpeed 3264878a028SSebastian Andrzej Siewior * and falls back to high-speed mode which causes 3271d046793SPaul Zimmerman * the device to enter a Connect/Disconnect loop 3284878a028SSebastian Andrzej Siewior */ 3294878a028SSebastian Andrzej Siewior if (dwc->revision < DWC3_REVISION_190A) 3304878a028SSebastian Andrzej Siewior reg |= DWC3_GCTL_U2RSTECN; 3314878a028SSebastian Andrzej Siewior 332789451f6SFelipe Balbi dwc3_core_num_eps(dwc); 333789451f6SFelipe Balbi 3344878a028SSebastian Andrzej Siewior dwc3_writel(dwc->regs, DWC3_GCTL, reg); 3354878a028SSebastian Andrzej Siewior 33672246da4SFelipe Balbi return 0; 33772246da4SFelipe Balbi 33872246da4SFelipe Balbi err0: 33972246da4SFelipe Balbi return ret; 34072246da4SFelipe Balbi } 34172246da4SFelipe Balbi 34272246da4SFelipe Balbi static void dwc3_core_exit(struct dwc3 *dwc) 34372246da4SFelipe Balbi { 34401b8daf7SVivek Gautam usb_phy_shutdown(dwc->usb2_phy); 34501b8daf7SVivek Gautam usb_phy_shutdown(dwc->usb3_phy); 34672246da4SFelipe Balbi } 34772246da4SFelipe Balbi 34872246da4SFelipe Balbi #define DWC3_ALIGN_MASK (16 - 1) 34972246da4SFelipe Balbi 35041ac7b3aSBill Pemberton static int dwc3_probe(struct platform_device *pdev) 35172246da4SFelipe Balbi { 3526462cbd5SFelipe Balbi struct dwc3_platform_data *pdata = pdev->dev.platform_data; 353457e84b6SFelipe Balbi struct device_node *node = pdev->dev.of_node; 35472246da4SFelipe Balbi struct resource *res; 35572246da4SFelipe Balbi struct dwc3 *dwc; 356802ca850SChanho Park struct device *dev = &pdev->dev; 3570949e99bSFelipe Balbi 35872246da4SFelipe Balbi int ret = -ENOMEM; 3590949e99bSFelipe Balbi 3600949e99bSFelipe Balbi void __iomem *regs; 36172246da4SFelipe Balbi void *mem; 36272246da4SFelipe Balbi 363802ca850SChanho Park mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); 36472246da4SFelipe Balbi if (!mem) { 365802ca850SChanho Park dev_err(dev, "not enough memory\n"); 366802ca850SChanho Park return -ENOMEM; 36772246da4SFelipe Balbi } 36872246da4SFelipe Balbi dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); 36972246da4SFelipe Balbi dwc->mem = mem; 37072246da4SFelipe Balbi 37151249dcaSIdo Shayevitz res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 37272246da4SFelipe Balbi if (!res) { 37351249dcaSIdo Shayevitz dev_err(dev, "missing IRQ\n"); 374802ca850SChanho Park return -ENODEV; 37572246da4SFelipe Balbi } 376066618bcSKishon Vijay Abraham I dwc->xhci_resources[1].start = res->start; 377066618bcSKishon Vijay Abraham I dwc->xhci_resources[1].end = res->end; 378066618bcSKishon Vijay Abraham I dwc->xhci_resources[1].flags = res->flags; 379066618bcSKishon Vijay Abraham I dwc->xhci_resources[1].name = res->name; 38072246da4SFelipe Balbi 38151249dcaSIdo Shayevitz res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 38251249dcaSIdo Shayevitz if (!res) { 38351249dcaSIdo Shayevitz dev_err(dev, "missing memory resource\n"); 38451249dcaSIdo Shayevitz return -ENODEV; 38551249dcaSIdo Shayevitz } 386066618bcSKishon Vijay Abraham I dwc->xhci_resources[0].start = res->start; 38751249dcaSIdo Shayevitz dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + 38851249dcaSIdo Shayevitz DWC3_XHCI_REGS_END; 389066618bcSKishon Vijay Abraham I dwc->xhci_resources[0].flags = res->flags; 390066618bcSKishon Vijay Abraham I dwc->xhci_resources[0].name = res->name; 391d07e8819SFelipe Balbi 39251249dcaSIdo Shayevitz /* 39351249dcaSIdo Shayevitz * Request memory region but exclude xHCI regs, 39451249dcaSIdo Shayevitz * since it will be requested by the xhci-plat driver. 39551249dcaSIdo Shayevitz */ 39651249dcaSIdo Shayevitz res = devm_request_mem_region(dev, res->start + DWC3_GLOBALS_REGS_START, 39751249dcaSIdo Shayevitz resource_size(res) - DWC3_GLOBALS_REGS_START, 398802ca850SChanho Park dev_name(dev)); 39972246da4SFelipe Balbi if (!res) { 400802ca850SChanho Park dev_err(dev, "can't request mem region\n"); 401802ca850SChanho Park return -ENOMEM; 40272246da4SFelipe Balbi } 40372246da4SFelipe Balbi 404b7e38aa6SFelipe Balbi regs = devm_ioremap_nocache(dev, res->start, resource_size(res)); 40572246da4SFelipe Balbi if (!regs) { 406802ca850SChanho Park dev_err(dev, "ioremap failed\n"); 407802ca850SChanho Park return -ENOMEM; 40872246da4SFelipe Balbi } 40972246da4SFelipe Balbi 4105088b6f5SKishon Vijay Abraham I if (node) { 411f7e846f0SFelipe Balbi dwc->maximum_speed = of_usb_get_maximum_speed(node); 412f7e846f0SFelipe Balbi 4135088b6f5SKishon Vijay Abraham I dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); 4145088b6f5SKishon Vijay Abraham I dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); 4156462cbd5SFelipe Balbi 4166462cbd5SFelipe Balbi dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); 417a45c82b8SRuchika Kharwar dwc->dr_mode = of_usb_get_dr_mode(node); 4185088b6f5SKishon Vijay Abraham I } else { 419f7e846f0SFelipe Balbi dwc->maximum_speed = pdata->maximum_speed; 420f7e846f0SFelipe Balbi 42151e1e7bcSFelipe Balbi dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); 4225088b6f5SKishon Vijay Abraham I dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); 4236462cbd5SFelipe Balbi 4246462cbd5SFelipe Balbi dwc->needs_fifo_resize = pdata->tx_fifo_resize; 425a45c82b8SRuchika Kharwar dwc->dr_mode = pdata->dr_mode; 4265088b6f5SKishon Vijay Abraham I } 4275088b6f5SKishon Vijay Abraham I 428f7e846f0SFelipe Balbi /* default to superspeed if no maximum_speed passed */ 429f7e846f0SFelipe Balbi if (dwc->maximum_speed == USB_SPEED_UNKNOWN) 430f7e846f0SFelipe Balbi dwc->maximum_speed = USB_SPEED_SUPER; 431f7e846f0SFelipe Balbi 432d105e7f8SFelipe Balbi if (IS_ERR(dwc->usb2_phy)) { 433d105e7f8SFelipe Balbi ret = PTR_ERR(dwc->usb2_phy); 434d105e7f8SFelipe Balbi 435d105e7f8SFelipe Balbi /* 436d105e7f8SFelipe Balbi * if -ENXIO is returned, it means PHY layer wasn't 437d105e7f8SFelipe Balbi * enabled, so it makes no sense to return -EPROBE_DEFER 438d105e7f8SFelipe Balbi * in that case, since no PHY driver will ever probe. 439d105e7f8SFelipe Balbi */ 440d105e7f8SFelipe Balbi if (ret == -ENXIO) 441d105e7f8SFelipe Balbi return ret; 442d105e7f8SFelipe Balbi 44351e1e7bcSFelipe Balbi dev_err(dev, "no usb2 phy configured\n"); 44451e1e7bcSFelipe Balbi return -EPROBE_DEFER; 44551e1e7bcSFelipe Balbi } 44651e1e7bcSFelipe Balbi 447d105e7f8SFelipe Balbi if (IS_ERR(dwc->usb3_phy)) { 448315955d7SRuchika Kharwar ret = PTR_ERR(dwc->usb3_phy); 449d105e7f8SFelipe Balbi 450d105e7f8SFelipe Balbi /* 451d105e7f8SFelipe Balbi * if -ENXIO is returned, it means PHY layer wasn't 452d105e7f8SFelipe Balbi * enabled, so it makes no sense to return -EPROBE_DEFER 453d105e7f8SFelipe Balbi * in that case, since no PHY driver will ever probe. 454d105e7f8SFelipe Balbi */ 455d105e7f8SFelipe Balbi if (ret == -ENXIO) 456d105e7f8SFelipe Balbi return ret; 457d105e7f8SFelipe Balbi 45851e1e7bcSFelipe Balbi dev_err(dev, "no usb3 phy configured\n"); 45951e1e7bcSFelipe Balbi return -EPROBE_DEFER; 46051e1e7bcSFelipe Balbi } 46151e1e7bcSFelipe Balbi 4628ba007a9SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb2_phy, 0); 4638ba007a9SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb3_phy, 0); 4648ba007a9SKishon Vijay Abraham I 46572246da4SFelipe Balbi spin_lock_init(&dwc->lock); 46672246da4SFelipe Balbi platform_set_drvdata(pdev, dwc); 46772246da4SFelipe Balbi 46872246da4SFelipe Balbi dwc->regs = regs; 46972246da4SFelipe Balbi dwc->regs_size = resource_size(res); 470802ca850SChanho Park dwc->dev = dev; 47172246da4SFelipe Balbi 472ddff14f1SKishon Vijay Abraham I dev->dma_mask = dev->parent->dma_mask; 473ddff14f1SKishon Vijay Abraham I dev->dma_parms = dev->parent->dma_parms; 474ddff14f1SKishon Vijay Abraham I dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask); 475ddff14f1SKishon Vijay Abraham I 476802ca850SChanho Park pm_runtime_enable(dev); 477802ca850SChanho Park pm_runtime_get_sync(dev); 478802ca850SChanho Park pm_runtime_forbid(dev); 47972246da4SFelipe Balbi 4804fd24483SKishon Vijay Abraham I dwc3_cache_hwparams(dwc); 4814fd24483SKishon Vijay Abraham I 4823921426bSFelipe Balbi ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); 4833921426bSFelipe Balbi if (ret) { 4843921426bSFelipe Balbi dev_err(dwc->dev, "failed to allocate event buffers\n"); 4853921426bSFelipe Balbi ret = -ENOMEM; 4863921426bSFelipe Balbi goto err0; 4873921426bSFelipe Balbi } 4883921426bSFelipe Balbi 48972246da4SFelipe Balbi ret = dwc3_core_init(dwc); 49072246da4SFelipe Balbi if (ret) { 491802ca850SChanho Park dev_err(dev, "failed to initialize core\n"); 4923921426bSFelipe Balbi goto err0; 49372246da4SFelipe Balbi } 49472246da4SFelipe Balbi 495f122d33eSFelipe Balbi ret = dwc3_event_buffers_setup(dwc); 496f122d33eSFelipe Balbi if (ret) { 497f122d33eSFelipe Balbi dev_err(dwc->dev, "failed to setup event buffers\n"); 498f122d33eSFelipe Balbi goto err1; 499f122d33eSFelipe Balbi } 500f122d33eSFelipe Balbi 501cd051da2SVivek Gautam if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) 502a45c82b8SRuchika Kharwar dwc->dr_mode = USB_DR_MODE_HOST; 503cd051da2SVivek Gautam else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) 504a45c82b8SRuchika Kharwar dwc->dr_mode = USB_DR_MODE_PERIPHERAL; 5050949e99bSFelipe Balbi 506a45c82b8SRuchika Kharwar if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) 507a45c82b8SRuchika Kharwar dwc->dr_mode = USB_DR_MODE_OTG; 508a45c82b8SRuchika Kharwar 509a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 510a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 5113140e8cbSSebastian Andrzej Siewior dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); 51272246da4SFelipe Balbi ret = dwc3_gadget_init(dwc); 51372246da4SFelipe Balbi if (ret) { 514802ca850SChanho Park dev_err(dev, "failed to initialize gadget\n"); 515f122d33eSFelipe Balbi goto err2; 51672246da4SFelipe Balbi } 5170949e99bSFelipe Balbi break; 518a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 5193140e8cbSSebastian Andrzej Siewior dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); 520d07e8819SFelipe Balbi ret = dwc3_host_init(dwc); 521d07e8819SFelipe Balbi if (ret) { 522802ca850SChanho Park dev_err(dev, "failed to initialize host\n"); 523f122d33eSFelipe Balbi goto err2; 52472246da4SFelipe Balbi } 525d07e8819SFelipe Balbi break; 526a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 5273140e8cbSSebastian Andrzej Siewior dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); 528d07e8819SFelipe Balbi ret = dwc3_host_init(dwc); 529d07e8819SFelipe Balbi if (ret) { 530802ca850SChanho Park dev_err(dev, "failed to initialize host\n"); 531f122d33eSFelipe Balbi goto err2; 532d07e8819SFelipe Balbi } 533d07e8819SFelipe Balbi 534d07e8819SFelipe Balbi ret = dwc3_gadget_init(dwc); 535d07e8819SFelipe Balbi if (ret) { 536802ca850SChanho Park dev_err(dev, "failed to initialize gadget\n"); 537f122d33eSFelipe Balbi goto err2; 538d07e8819SFelipe Balbi } 539d07e8819SFelipe Balbi break; 5400949e99bSFelipe Balbi default: 541a45c82b8SRuchika Kharwar dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode); 542f122d33eSFelipe Balbi goto err2; 54372246da4SFelipe Balbi } 54472246da4SFelipe Balbi 54572246da4SFelipe Balbi ret = dwc3_debugfs_init(dwc); 54672246da4SFelipe Balbi if (ret) { 547802ca850SChanho Park dev_err(dev, "failed to initialize debugfs\n"); 548f122d33eSFelipe Balbi goto err3; 54972246da4SFelipe Balbi } 55072246da4SFelipe Balbi 551802ca850SChanho Park pm_runtime_allow(dev); 55272246da4SFelipe Balbi 55372246da4SFelipe Balbi return 0; 55472246da4SFelipe Balbi 555f122d33eSFelipe Balbi err3: 556a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 557a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 55872246da4SFelipe Balbi dwc3_gadget_exit(dwc); 5590949e99bSFelipe Balbi break; 560a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 561d07e8819SFelipe Balbi dwc3_host_exit(dwc); 562d07e8819SFelipe Balbi break; 563a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 564d07e8819SFelipe Balbi dwc3_host_exit(dwc); 565d07e8819SFelipe Balbi dwc3_gadget_exit(dwc); 566d07e8819SFelipe Balbi break; 5670949e99bSFelipe Balbi default: 5680949e99bSFelipe Balbi /* do nothing */ 5690949e99bSFelipe Balbi break; 5700949e99bSFelipe Balbi } 57172246da4SFelipe Balbi 572f122d33eSFelipe Balbi err2: 573f122d33eSFelipe Balbi dwc3_event_buffers_cleanup(dwc); 574f122d33eSFelipe Balbi 575802ca850SChanho Park err1: 57672246da4SFelipe Balbi dwc3_core_exit(dwc); 57772246da4SFelipe Balbi 5783921426bSFelipe Balbi err0: 5793921426bSFelipe Balbi dwc3_free_event_buffers(dwc); 5803921426bSFelipe Balbi 58172246da4SFelipe Balbi return ret; 58272246da4SFelipe Balbi } 58372246da4SFelipe Balbi 584fb4e98abSBill Pemberton static int dwc3_remove(struct platform_device *pdev) 58572246da4SFelipe Balbi { 58672246da4SFelipe Balbi struct dwc3 *dwc = platform_get_drvdata(pdev); 58772246da4SFelipe Balbi 5888ba007a9SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb2_phy, 1); 5898ba007a9SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb3_phy, 1); 5908ba007a9SKishon Vijay Abraham I 59172246da4SFelipe Balbi pm_runtime_put(&pdev->dev); 59272246da4SFelipe Balbi pm_runtime_disable(&pdev->dev); 59372246da4SFelipe Balbi 59472246da4SFelipe Balbi dwc3_debugfs_exit(dwc); 59572246da4SFelipe Balbi 596a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 597a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 59872246da4SFelipe Balbi dwc3_gadget_exit(dwc); 5990949e99bSFelipe Balbi break; 600a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 601d07e8819SFelipe Balbi dwc3_host_exit(dwc); 602d07e8819SFelipe Balbi break; 603a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 604d07e8819SFelipe Balbi dwc3_host_exit(dwc); 605d07e8819SFelipe Balbi dwc3_gadget_exit(dwc); 606d07e8819SFelipe Balbi break; 6070949e99bSFelipe Balbi default: 6080949e99bSFelipe Balbi /* do nothing */ 6090949e99bSFelipe Balbi break; 6100949e99bSFelipe Balbi } 61172246da4SFelipe Balbi 612f122d33eSFelipe Balbi dwc3_event_buffers_cleanup(dwc); 613d9b4330aSFelipe Balbi dwc3_free_event_buffers(dwc); 61472246da4SFelipe Balbi dwc3_core_exit(dwc); 61572246da4SFelipe Balbi 61672246da4SFelipe Balbi return 0; 61772246da4SFelipe Balbi } 61872246da4SFelipe Balbi 61919fda7cdSJingoo Han #ifdef CONFIG_PM_SLEEP 6207415f17cSFelipe Balbi static int dwc3_prepare(struct device *dev) 6217415f17cSFelipe Balbi { 6227415f17cSFelipe Balbi struct dwc3 *dwc = dev_get_drvdata(dev); 6237415f17cSFelipe Balbi unsigned long flags; 6247415f17cSFelipe Balbi 6257415f17cSFelipe Balbi spin_lock_irqsave(&dwc->lock, flags); 6267415f17cSFelipe Balbi 627a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 628a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 629a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 6307415f17cSFelipe Balbi dwc3_gadget_prepare(dwc); 6317415f17cSFelipe Balbi /* FALLTHROUGH */ 632a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 6337415f17cSFelipe Balbi default: 6347415f17cSFelipe Balbi dwc3_event_buffers_cleanup(dwc); 6357415f17cSFelipe Balbi break; 6367415f17cSFelipe Balbi } 6377415f17cSFelipe Balbi 6387415f17cSFelipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 6397415f17cSFelipe Balbi 6407415f17cSFelipe Balbi return 0; 6417415f17cSFelipe Balbi } 6427415f17cSFelipe Balbi 6437415f17cSFelipe Balbi static void dwc3_complete(struct device *dev) 6447415f17cSFelipe Balbi { 6457415f17cSFelipe Balbi struct dwc3 *dwc = dev_get_drvdata(dev); 6467415f17cSFelipe Balbi unsigned long flags; 6477415f17cSFelipe Balbi 6487415f17cSFelipe Balbi spin_lock_irqsave(&dwc->lock, flags); 6497415f17cSFelipe Balbi 650a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 651a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 652a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 6537415f17cSFelipe Balbi dwc3_gadget_complete(dwc); 6547415f17cSFelipe Balbi /* FALLTHROUGH */ 655a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 6567415f17cSFelipe Balbi default: 6577415f17cSFelipe Balbi dwc3_event_buffers_setup(dwc); 6587415f17cSFelipe Balbi break; 6597415f17cSFelipe Balbi } 6607415f17cSFelipe Balbi 6617415f17cSFelipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 6627415f17cSFelipe Balbi } 6637415f17cSFelipe Balbi 6647415f17cSFelipe Balbi static int dwc3_suspend(struct device *dev) 6657415f17cSFelipe Balbi { 6667415f17cSFelipe Balbi struct dwc3 *dwc = dev_get_drvdata(dev); 6677415f17cSFelipe Balbi unsigned long flags; 6687415f17cSFelipe Balbi 6697415f17cSFelipe Balbi spin_lock_irqsave(&dwc->lock, flags); 6707415f17cSFelipe Balbi 671a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 672a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 673a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 6747415f17cSFelipe Balbi dwc3_gadget_suspend(dwc); 6757415f17cSFelipe Balbi /* FALLTHROUGH */ 676a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 6777415f17cSFelipe Balbi default: 6787415f17cSFelipe Balbi /* do nothing */ 6797415f17cSFelipe Balbi break; 6807415f17cSFelipe Balbi } 6817415f17cSFelipe Balbi 6827415f17cSFelipe Balbi dwc->gctl = dwc3_readl(dwc->regs, DWC3_GCTL); 6837415f17cSFelipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 6847415f17cSFelipe Balbi 6857415f17cSFelipe Balbi usb_phy_shutdown(dwc->usb3_phy); 6867415f17cSFelipe Balbi usb_phy_shutdown(dwc->usb2_phy); 6877415f17cSFelipe Balbi 6887415f17cSFelipe Balbi return 0; 6897415f17cSFelipe Balbi } 6907415f17cSFelipe Balbi 6917415f17cSFelipe Balbi static int dwc3_resume(struct device *dev) 6927415f17cSFelipe Balbi { 6937415f17cSFelipe Balbi struct dwc3 *dwc = dev_get_drvdata(dev); 6947415f17cSFelipe Balbi unsigned long flags; 6957415f17cSFelipe Balbi 6967415f17cSFelipe Balbi usb_phy_init(dwc->usb3_phy); 6977415f17cSFelipe Balbi usb_phy_init(dwc->usb2_phy); 6987415f17cSFelipe Balbi msleep(100); 6997415f17cSFelipe Balbi 7007415f17cSFelipe Balbi spin_lock_irqsave(&dwc->lock, flags); 7017415f17cSFelipe Balbi 7027415f17cSFelipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, dwc->gctl); 7037415f17cSFelipe Balbi 704a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 705a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 706a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 7077415f17cSFelipe Balbi dwc3_gadget_resume(dwc); 7087415f17cSFelipe Balbi /* FALLTHROUGH */ 709a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 7107415f17cSFelipe Balbi default: 7117415f17cSFelipe Balbi /* do nothing */ 7127415f17cSFelipe Balbi break; 7137415f17cSFelipe Balbi } 7147415f17cSFelipe Balbi 7157415f17cSFelipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 7167415f17cSFelipe Balbi 7177415f17cSFelipe Balbi pm_runtime_disable(dev); 7187415f17cSFelipe Balbi pm_runtime_set_active(dev); 7197415f17cSFelipe Balbi pm_runtime_enable(dev); 7207415f17cSFelipe Balbi 7217415f17cSFelipe Balbi return 0; 7227415f17cSFelipe Balbi } 7237415f17cSFelipe Balbi 7247415f17cSFelipe Balbi static const struct dev_pm_ops dwc3_dev_pm_ops = { 7257415f17cSFelipe Balbi .prepare = dwc3_prepare, 7267415f17cSFelipe Balbi .complete = dwc3_complete, 7277415f17cSFelipe Balbi 7287415f17cSFelipe Balbi SET_SYSTEM_SLEEP_PM_OPS(dwc3_suspend, dwc3_resume) 7297415f17cSFelipe Balbi }; 7307415f17cSFelipe Balbi 7317415f17cSFelipe Balbi #define DWC3_PM_OPS &(dwc3_dev_pm_ops) 7327415f17cSFelipe Balbi #else 7337415f17cSFelipe Balbi #define DWC3_PM_OPS NULL 7347415f17cSFelipe Balbi #endif 7357415f17cSFelipe Balbi 7365088b6f5SKishon Vijay Abraham I #ifdef CONFIG_OF 7375088b6f5SKishon Vijay Abraham I static const struct of_device_id of_dwc3_match[] = { 7385088b6f5SKishon Vijay Abraham I { 73922a5aa17SFelipe Balbi .compatible = "snps,dwc3" 74022a5aa17SFelipe Balbi }, 74122a5aa17SFelipe Balbi { 7425088b6f5SKishon Vijay Abraham I .compatible = "synopsys,dwc3" 7435088b6f5SKishon Vijay Abraham I }, 7445088b6f5SKishon Vijay Abraham I { }, 7455088b6f5SKishon Vijay Abraham I }; 7465088b6f5SKishon Vijay Abraham I MODULE_DEVICE_TABLE(of, of_dwc3_match); 7475088b6f5SKishon Vijay Abraham I #endif 7485088b6f5SKishon Vijay Abraham I 74972246da4SFelipe Balbi static struct platform_driver dwc3_driver = { 75072246da4SFelipe Balbi .probe = dwc3_probe, 7517690417dSBill Pemberton .remove = dwc3_remove, 75272246da4SFelipe Balbi .driver = { 75372246da4SFelipe Balbi .name = "dwc3", 7545088b6f5SKishon Vijay Abraham I .of_match_table = of_match_ptr(of_dwc3_match), 7557415f17cSFelipe Balbi .pm = DWC3_PM_OPS, 75672246da4SFelipe Balbi }, 75772246da4SFelipe Balbi }; 75872246da4SFelipe Balbi 759b1116dccSTobias Klauser module_platform_driver(dwc3_driver); 760b1116dccSTobias Klauser 7617ae4fc4dSSebastian Andrzej Siewior MODULE_ALIAS("platform:dwc3"); 76272246da4SFelipe Balbi MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 7635945f789SFelipe Balbi MODULE_LICENSE("GPL v2"); 76472246da4SFelipe Balbi MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); 765