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 22fa0ea13eSFelipe Balbi #include <linux/version.h> 23a72e658bSFelipe Balbi #include <linux/module.h> 2472246da4SFelipe Balbi #include <linux/kernel.h> 2572246da4SFelipe Balbi #include <linux/slab.h> 2672246da4SFelipe Balbi #include <linux/spinlock.h> 2772246da4SFelipe Balbi #include <linux/platform_device.h> 2872246da4SFelipe Balbi #include <linux/pm_runtime.h> 2972246da4SFelipe Balbi #include <linux/interrupt.h> 3072246da4SFelipe Balbi #include <linux/ioport.h> 3172246da4SFelipe Balbi #include <linux/io.h> 3272246da4SFelipe Balbi #include <linux/list.h> 3372246da4SFelipe Balbi #include <linux/delay.h> 3472246da4SFelipe Balbi #include <linux/dma-mapping.h> 35457e84b6SFelipe Balbi #include <linux/of.h> 36404905a6SHeikki Krogerus #include <linux/acpi.h> 3772246da4SFelipe Balbi 3872246da4SFelipe Balbi #include <linux/usb/ch9.h> 3972246da4SFelipe Balbi #include <linux/usb/gadget.h> 40f7e846f0SFelipe Balbi #include <linux/usb/of.h> 41a45c82b8SRuchika Kharwar #include <linux/usb/otg.h> 4272246da4SFelipe Balbi 436462cbd5SFelipe Balbi #include "platform_data.h" 4472246da4SFelipe Balbi #include "core.h" 4572246da4SFelipe Balbi #include "gadget.h" 4672246da4SFelipe Balbi #include "io.h" 4772246da4SFelipe Balbi 4872246da4SFelipe Balbi #include "debug.h" 4972246da4SFelipe Balbi 508300dd23SFelipe Balbi /* -------------------------------------------------------------------------- */ 518300dd23SFelipe Balbi 523140e8cbSSebastian Andrzej Siewior void dwc3_set_mode(struct dwc3 *dwc, u32 mode) 533140e8cbSSebastian Andrzej Siewior { 543140e8cbSSebastian Andrzej Siewior u32 reg; 553140e8cbSSebastian Andrzej Siewior 563140e8cbSSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_GCTL); 573140e8cbSSebastian Andrzej Siewior reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)); 583140e8cbSSebastian Andrzej Siewior reg |= DWC3_GCTL_PRTCAPDIR(mode); 593140e8cbSSebastian Andrzej Siewior dwc3_writel(dwc->regs, DWC3_GCTL, reg); 603140e8cbSSebastian Andrzej Siewior } 618300dd23SFelipe Balbi 6272246da4SFelipe Balbi /** 6372246da4SFelipe Balbi * dwc3_core_soft_reset - Issues core soft reset and PHY reset 6472246da4SFelipe Balbi * @dwc: pointer to our context structure 6572246da4SFelipe Balbi */ 6657303488SKishon Vijay Abraham I static int dwc3_core_soft_reset(struct dwc3 *dwc) 6772246da4SFelipe Balbi { 6872246da4SFelipe Balbi u32 reg; 6957303488SKishon Vijay Abraham I int ret; 7072246da4SFelipe Balbi 7172246da4SFelipe Balbi /* Before Resetting PHY, put Core in Reset */ 7272246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 7372246da4SFelipe Balbi reg |= DWC3_GCTL_CORESOFTRESET; 7472246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 7572246da4SFelipe Balbi 7672246da4SFelipe Balbi /* Assert USB3 PHY reset */ 7772246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 7872246da4SFelipe Balbi reg |= DWC3_GUSB3PIPECTL_PHYSOFTRST; 7972246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 8072246da4SFelipe Balbi 8172246da4SFelipe Balbi /* Assert USB2 PHY reset */ 8272246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 8372246da4SFelipe Balbi reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST; 8472246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 8572246da4SFelipe Balbi 8651e1e7bcSFelipe Balbi usb_phy_init(dwc->usb2_phy); 8751e1e7bcSFelipe Balbi usb_phy_init(dwc->usb3_phy); 8857303488SKishon Vijay Abraham I ret = phy_init(dwc->usb2_generic_phy); 8957303488SKishon Vijay Abraham I if (ret < 0) 9057303488SKishon Vijay Abraham I return ret; 9157303488SKishon Vijay Abraham I 9257303488SKishon Vijay Abraham I ret = phy_init(dwc->usb3_generic_phy); 9357303488SKishon Vijay Abraham I if (ret < 0) { 9457303488SKishon Vijay Abraham I phy_exit(dwc->usb2_generic_phy); 9557303488SKishon Vijay Abraham I return ret; 9657303488SKishon Vijay Abraham I } 9772246da4SFelipe Balbi mdelay(100); 9872246da4SFelipe Balbi 9972246da4SFelipe Balbi /* Clear USB3 PHY reset */ 10072246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 10172246da4SFelipe Balbi reg &= ~DWC3_GUSB3PIPECTL_PHYSOFTRST; 10272246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 10372246da4SFelipe Balbi 10472246da4SFelipe Balbi /* Clear USB2 PHY reset */ 10572246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 10672246da4SFelipe Balbi reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST; 10772246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 10872246da4SFelipe Balbi 10945627ac6SPratyush Anand mdelay(100); 11045627ac6SPratyush Anand 11172246da4SFelipe Balbi /* After PHYs are stable we can take Core out of reset state */ 11272246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 11372246da4SFelipe Balbi reg &= ~DWC3_GCTL_CORESOFTRESET; 11472246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 11557303488SKishon Vijay Abraham I 11657303488SKishon Vijay Abraham I return 0; 11772246da4SFelipe Balbi } 11872246da4SFelipe Balbi 11972246da4SFelipe Balbi /** 12072246da4SFelipe Balbi * dwc3_free_one_event_buffer - Frees one event buffer 12172246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 12272246da4SFelipe Balbi * @evt: Pointer to event buffer to be freed 12372246da4SFelipe Balbi */ 12472246da4SFelipe Balbi static void dwc3_free_one_event_buffer(struct dwc3 *dwc, 12572246da4SFelipe Balbi struct dwc3_event_buffer *evt) 12672246da4SFelipe Balbi { 12772246da4SFelipe Balbi dma_free_coherent(dwc->dev, evt->length, evt->buf, evt->dma); 12872246da4SFelipe Balbi } 12972246da4SFelipe Balbi 13072246da4SFelipe Balbi /** 1311d046793SPaul Zimmerman * dwc3_alloc_one_event_buffer - Allocates one event buffer structure 13272246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 13372246da4SFelipe Balbi * @length: size of the event buffer 13472246da4SFelipe Balbi * 1351d046793SPaul Zimmerman * Returns a pointer to the allocated event buffer structure on success 13672246da4SFelipe Balbi * otherwise ERR_PTR(errno). 13772246da4SFelipe Balbi */ 13867d0b500SFelipe Balbi static struct dwc3_event_buffer *dwc3_alloc_one_event_buffer(struct dwc3 *dwc, 13967d0b500SFelipe Balbi unsigned length) 14072246da4SFelipe Balbi { 14172246da4SFelipe Balbi struct dwc3_event_buffer *evt; 14272246da4SFelipe Balbi 143380f0d28SFelipe Balbi evt = devm_kzalloc(dwc->dev, sizeof(*evt), GFP_KERNEL); 14472246da4SFelipe Balbi if (!evt) 14572246da4SFelipe Balbi return ERR_PTR(-ENOMEM); 14672246da4SFelipe Balbi 14772246da4SFelipe Balbi evt->dwc = dwc; 14872246da4SFelipe Balbi evt->length = length; 14972246da4SFelipe Balbi evt->buf = dma_alloc_coherent(dwc->dev, length, 15072246da4SFelipe Balbi &evt->dma, GFP_KERNEL); 151e32672f0SFelipe Balbi if (!evt->buf) 15272246da4SFelipe Balbi return ERR_PTR(-ENOMEM); 15372246da4SFelipe Balbi 15472246da4SFelipe Balbi return evt; 15572246da4SFelipe Balbi } 15672246da4SFelipe Balbi 15772246da4SFelipe Balbi /** 15872246da4SFelipe Balbi * dwc3_free_event_buffers - frees all allocated event buffers 15972246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 16072246da4SFelipe Balbi */ 16172246da4SFelipe Balbi static void dwc3_free_event_buffers(struct dwc3 *dwc) 16272246da4SFelipe Balbi { 16372246da4SFelipe Balbi struct dwc3_event_buffer *evt; 16472246da4SFelipe Balbi int i; 16572246da4SFelipe Balbi 1669f622b2aSFelipe Balbi for (i = 0; i < dwc->num_event_buffers; i++) { 16772246da4SFelipe Balbi evt = dwc->ev_buffs[i]; 16864b6c8a7SAnton Tikhomirov if (evt) 16972246da4SFelipe Balbi dwc3_free_one_event_buffer(dwc, evt); 17072246da4SFelipe Balbi } 17172246da4SFelipe Balbi } 17272246da4SFelipe Balbi 17372246da4SFelipe Balbi /** 17472246da4SFelipe Balbi * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length 1751d046793SPaul Zimmerman * @dwc: pointer to our controller context structure 17672246da4SFelipe Balbi * @length: size of event buffer 17772246da4SFelipe Balbi * 1781d046793SPaul Zimmerman * Returns 0 on success otherwise negative errno. In the error case, dwc 17972246da4SFelipe Balbi * may contain some buffers allocated but not all which were requested. 18072246da4SFelipe Balbi */ 18141ac7b3aSBill Pemberton static int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) 18272246da4SFelipe Balbi { 1839f622b2aSFelipe Balbi int num; 18472246da4SFelipe Balbi int i; 18572246da4SFelipe Balbi 1869f622b2aSFelipe Balbi num = DWC3_NUM_INT(dwc->hwparams.hwparams1); 1879f622b2aSFelipe Balbi dwc->num_event_buffers = num; 1889f622b2aSFelipe Balbi 189380f0d28SFelipe Balbi dwc->ev_buffs = devm_kzalloc(dwc->dev, sizeof(*dwc->ev_buffs) * num, 190380f0d28SFelipe Balbi GFP_KERNEL); 191734d5a53SJingoo Han if (!dwc->ev_buffs) 192457d3f21SFelipe Balbi return -ENOMEM; 193457d3f21SFelipe Balbi 19472246da4SFelipe Balbi for (i = 0; i < num; i++) { 19572246da4SFelipe Balbi struct dwc3_event_buffer *evt; 19672246da4SFelipe Balbi 19772246da4SFelipe Balbi evt = dwc3_alloc_one_event_buffer(dwc, length); 19872246da4SFelipe Balbi if (IS_ERR(evt)) { 19972246da4SFelipe Balbi dev_err(dwc->dev, "can't allocate event buffer\n"); 20072246da4SFelipe Balbi return PTR_ERR(evt); 20172246da4SFelipe Balbi } 20272246da4SFelipe Balbi dwc->ev_buffs[i] = evt; 20372246da4SFelipe Balbi } 20472246da4SFelipe Balbi 20572246da4SFelipe Balbi return 0; 20672246da4SFelipe Balbi } 20772246da4SFelipe Balbi 20872246da4SFelipe Balbi /** 20972246da4SFelipe Balbi * dwc3_event_buffers_setup - setup our allocated event buffers 2101d046793SPaul Zimmerman * @dwc: pointer to our controller context structure 21172246da4SFelipe Balbi * 21272246da4SFelipe Balbi * Returns 0 on success otherwise negative errno. 21372246da4SFelipe Balbi */ 2147acd85e0SPaul Zimmerman static int dwc3_event_buffers_setup(struct dwc3 *dwc) 21572246da4SFelipe Balbi { 21672246da4SFelipe Balbi struct dwc3_event_buffer *evt; 21772246da4SFelipe Balbi int n; 21872246da4SFelipe Balbi 2199f622b2aSFelipe Balbi for (n = 0; n < dwc->num_event_buffers; n++) { 22072246da4SFelipe Balbi evt = dwc->ev_buffs[n]; 22172246da4SFelipe Balbi dev_dbg(dwc->dev, "Event buf %p dma %08llx length %d\n", 22272246da4SFelipe Balbi evt->buf, (unsigned long long) evt->dma, 22372246da4SFelipe Balbi evt->length); 22472246da4SFelipe Balbi 2257acd85e0SPaul Zimmerman evt->lpos = 0; 2267acd85e0SPaul Zimmerman 22772246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 22872246da4SFelipe Balbi lower_32_bits(evt->dma)); 22972246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 23072246da4SFelipe Balbi upper_32_bits(evt->dma)); 23172246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), 23268d6a01bSFelipe Balbi DWC3_GEVNTSIZ_SIZE(evt->length)); 23372246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); 23472246da4SFelipe Balbi } 23572246da4SFelipe Balbi 23672246da4SFelipe Balbi return 0; 23772246da4SFelipe Balbi } 23872246da4SFelipe Balbi 23972246da4SFelipe Balbi static void dwc3_event_buffers_cleanup(struct dwc3 *dwc) 24072246da4SFelipe Balbi { 24172246da4SFelipe Balbi struct dwc3_event_buffer *evt; 24272246da4SFelipe Balbi int n; 24372246da4SFelipe Balbi 2449f622b2aSFelipe Balbi for (n = 0; n < dwc->num_event_buffers; n++) { 24572246da4SFelipe Balbi evt = dwc->ev_buffs[n]; 2467acd85e0SPaul Zimmerman 2477acd85e0SPaul Zimmerman evt->lpos = 0; 2487acd85e0SPaul Zimmerman 24972246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRLO(n), 0); 25072246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTADRHI(n), 0); 25168d6a01bSFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(n), DWC3_GEVNTSIZ_INTMASK 25268d6a01bSFelipe Balbi | DWC3_GEVNTSIZ_SIZE(0)); 25372246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(n), 0); 25472246da4SFelipe Balbi } 25572246da4SFelipe Balbi } 25672246da4SFelipe Balbi 2570ffcaf37SFelipe Balbi static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc) 2580ffcaf37SFelipe Balbi { 2590ffcaf37SFelipe Balbi if (!dwc->has_hibernation) 2600ffcaf37SFelipe Balbi return 0; 2610ffcaf37SFelipe Balbi 2620ffcaf37SFelipe Balbi if (!dwc->nr_scratch) 2630ffcaf37SFelipe Balbi return 0; 2640ffcaf37SFelipe Balbi 2650ffcaf37SFelipe Balbi dwc->scratchbuf = kmalloc_array(dwc->nr_scratch, 2660ffcaf37SFelipe Balbi DWC3_SCRATCHBUF_SIZE, GFP_KERNEL); 2670ffcaf37SFelipe Balbi if (!dwc->scratchbuf) 2680ffcaf37SFelipe Balbi return -ENOMEM; 2690ffcaf37SFelipe Balbi 2700ffcaf37SFelipe Balbi return 0; 2710ffcaf37SFelipe Balbi } 2720ffcaf37SFelipe Balbi 2730ffcaf37SFelipe Balbi static int dwc3_setup_scratch_buffers(struct dwc3 *dwc) 2740ffcaf37SFelipe Balbi { 2750ffcaf37SFelipe Balbi dma_addr_t scratch_addr; 2760ffcaf37SFelipe Balbi u32 param; 2770ffcaf37SFelipe Balbi int ret; 2780ffcaf37SFelipe Balbi 2790ffcaf37SFelipe Balbi if (!dwc->has_hibernation) 2800ffcaf37SFelipe Balbi return 0; 2810ffcaf37SFelipe Balbi 2820ffcaf37SFelipe Balbi if (!dwc->nr_scratch) 2830ffcaf37SFelipe Balbi return 0; 2840ffcaf37SFelipe Balbi 2850ffcaf37SFelipe Balbi /* should never fall here */ 2860ffcaf37SFelipe Balbi if (!WARN_ON(dwc->scratchbuf)) 2870ffcaf37SFelipe Balbi return 0; 2880ffcaf37SFelipe Balbi 2890ffcaf37SFelipe Balbi scratch_addr = dma_map_single(dwc->dev, dwc->scratchbuf, 2900ffcaf37SFelipe Balbi dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE, 2910ffcaf37SFelipe Balbi DMA_BIDIRECTIONAL); 2920ffcaf37SFelipe Balbi if (dma_mapping_error(dwc->dev, scratch_addr)) { 2930ffcaf37SFelipe Balbi dev_err(dwc->dev, "failed to map scratch buffer\n"); 2940ffcaf37SFelipe Balbi ret = -EFAULT; 2950ffcaf37SFelipe Balbi goto err0; 2960ffcaf37SFelipe Balbi } 2970ffcaf37SFelipe Balbi 2980ffcaf37SFelipe Balbi dwc->scratch_addr = scratch_addr; 2990ffcaf37SFelipe Balbi 3000ffcaf37SFelipe Balbi param = lower_32_bits(scratch_addr); 3010ffcaf37SFelipe Balbi 3020ffcaf37SFelipe Balbi ret = dwc3_send_gadget_generic_command(dwc, 3030ffcaf37SFelipe Balbi DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO, param); 3040ffcaf37SFelipe Balbi if (ret < 0) 3050ffcaf37SFelipe Balbi goto err1; 3060ffcaf37SFelipe Balbi 3070ffcaf37SFelipe Balbi param = upper_32_bits(scratch_addr); 3080ffcaf37SFelipe Balbi 3090ffcaf37SFelipe Balbi ret = dwc3_send_gadget_generic_command(dwc, 3100ffcaf37SFelipe Balbi DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI, param); 3110ffcaf37SFelipe Balbi if (ret < 0) 3120ffcaf37SFelipe Balbi goto err1; 3130ffcaf37SFelipe Balbi 3140ffcaf37SFelipe Balbi return 0; 3150ffcaf37SFelipe Balbi 3160ffcaf37SFelipe Balbi err1: 3170ffcaf37SFelipe Balbi dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch * 3180ffcaf37SFelipe Balbi DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); 3190ffcaf37SFelipe Balbi 3200ffcaf37SFelipe Balbi err0: 3210ffcaf37SFelipe Balbi return ret; 3220ffcaf37SFelipe Balbi } 3230ffcaf37SFelipe Balbi 3240ffcaf37SFelipe Balbi static void dwc3_free_scratch_buffers(struct dwc3 *dwc) 3250ffcaf37SFelipe Balbi { 3260ffcaf37SFelipe Balbi if (!dwc->has_hibernation) 3270ffcaf37SFelipe Balbi return; 3280ffcaf37SFelipe Balbi 3290ffcaf37SFelipe Balbi if (!dwc->nr_scratch) 3300ffcaf37SFelipe Balbi return; 3310ffcaf37SFelipe Balbi 3320ffcaf37SFelipe Balbi /* should never fall here */ 3330ffcaf37SFelipe Balbi if (!WARN_ON(dwc->scratchbuf)) 3340ffcaf37SFelipe Balbi return; 3350ffcaf37SFelipe Balbi 3360ffcaf37SFelipe Balbi dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch * 3370ffcaf37SFelipe Balbi DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL); 3380ffcaf37SFelipe Balbi kfree(dwc->scratchbuf); 3390ffcaf37SFelipe Balbi } 3400ffcaf37SFelipe Balbi 341789451f6SFelipe Balbi static void dwc3_core_num_eps(struct dwc3 *dwc) 342789451f6SFelipe Balbi { 343789451f6SFelipe Balbi struct dwc3_hwparams *parms = &dwc->hwparams; 344789451f6SFelipe Balbi 345789451f6SFelipe Balbi dwc->num_in_eps = DWC3_NUM_IN_EPS(parms); 346789451f6SFelipe Balbi dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps; 347789451f6SFelipe Balbi 348789451f6SFelipe Balbi dev_vdbg(dwc->dev, "found %d IN and %d OUT endpoints\n", 349789451f6SFelipe Balbi dwc->num_in_eps, dwc->num_out_eps); 350789451f6SFelipe Balbi } 351789451f6SFelipe Balbi 35241ac7b3aSBill Pemberton static void dwc3_cache_hwparams(struct dwc3 *dwc) 35326ceca97SFelipe Balbi { 35426ceca97SFelipe Balbi struct dwc3_hwparams *parms = &dwc->hwparams; 35526ceca97SFelipe Balbi 35626ceca97SFelipe Balbi parms->hwparams0 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS0); 35726ceca97SFelipe Balbi parms->hwparams1 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS1); 35826ceca97SFelipe Balbi parms->hwparams2 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS2); 35926ceca97SFelipe Balbi parms->hwparams3 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS3); 36026ceca97SFelipe Balbi parms->hwparams4 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS4); 36126ceca97SFelipe Balbi parms->hwparams5 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS5); 36226ceca97SFelipe Balbi parms->hwparams6 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS6); 36326ceca97SFelipe Balbi parms->hwparams7 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS7); 36426ceca97SFelipe Balbi parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8); 36526ceca97SFelipe Balbi } 36626ceca97SFelipe Balbi 36772246da4SFelipe Balbi /** 368b5a65c40SHuang Rui * dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core 369b5a65c40SHuang Rui * @dwc: Pointer to our controller context structure 370b5a65c40SHuang Rui */ 371b5a65c40SHuang Rui static void dwc3_phy_setup(struct dwc3 *dwc) 372b5a65c40SHuang Rui { 373b5a65c40SHuang Rui u32 reg; 374b5a65c40SHuang Rui 375b5a65c40SHuang Rui reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 376b5a65c40SHuang Rui 377b5a65c40SHuang Rui if (dwc->u2ss_inp3_quirk) 378b5a65c40SHuang Rui reg |= DWC3_GUSB3PIPECTL_U2SSINP3OK; 379b5a65c40SHuang Rui 380df31f5b3SHuang Rui if (dwc->req_p1p2p3_quirk) 381df31f5b3SHuang Rui reg |= DWC3_GUSB3PIPECTL_REQP1P2P3; 382df31f5b3SHuang Rui 383a2a1d0f5SHuang Rui if (dwc->del_p1p2p3_quirk) 384a2a1d0f5SHuang Rui reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN; 385a2a1d0f5SHuang Rui 38641c06ffdSHuang Rui if (dwc->del_phy_power_chg_quirk) 38741c06ffdSHuang Rui reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE; 38841c06ffdSHuang Rui 389fb67afcaSHuang Rui if (dwc->lfps_filter_quirk) 390fb67afcaSHuang Rui reg |= DWC3_GUSB3PIPECTL_LFPSFILT; 391fb67afcaSHuang Rui 392*14f4ac53SHuang Rui if (dwc->rx_detect_poll_quirk) 393*14f4ac53SHuang Rui reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL; 394*14f4ac53SHuang Rui 395b5a65c40SHuang Rui dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 396b5a65c40SHuang Rui 397b5a65c40SHuang Rui mdelay(100); 398b5a65c40SHuang Rui } 399b5a65c40SHuang Rui 400b5a65c40SHuang Rui /** 40172246da4SFelipe Balbi * dwc3_core_init - Low-level initialization of DWC3 Core 40272246da4SFelipe Balbi * @dwc: Pointer to our controller context structure 40372246da4SFelipe Balbi * 40472246da4SFelipe Balbi * Returns 0 on success otherwise negative errno. 40572246da4SFelipe Balbi */ 40641ac7b3aSBill Pemberton static int dwc3_core_init(struct dwc3 *dwc) 40772246da4SFelipe Balbi { 40872246da4SFelipe Balbi unsigned long timeout; 4090ffcaf37SFelipe Balbi u32 hwparams4 = dwc->hwparams.hwparams4; 41072246da4SFelipe Balbi u32 reg; 41172246da4SFelipe Balbi int ret; 41272246da4SFelipe Balbi 4137650bd74SSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_GSNPSID); 4147650bd74SSebastian Andrzej Siewior /* This should read as U3 followed by revision number */ 4157650bd74SSebastian Andrzej Siewior if ((reg & DWC3_GSNPSID_MASK) != 0x55330000) { 4167650bd74SSebastian Andrzej Siewior dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n"); 4177650bd74SSebastian Andrzej Siewior ret = -ENODEV; 4187650bd74SSebastian Andrzej Siewior goto err0; 4197650bd74SSebastian Andrzej Siewior } 420248b122bSFelipe Balbi dwc->revision = reg; 4217650bd74SSebastian Andrzej Siewior 422fa0ea13eSFelipe Balbi /* 423fa0ea13eSFelipe Balbi * Write Linux Version Code to our GUID register so it's easy to figure 424fa0ea13eSFelipe Balbi * out which kernel version a bug was found. 425fa0ea13eSFelipe Balbi */ 426fa0ea13eSFelipe Balbi dwc3_writel(dwc->regs, DWC3_GUID, LINUX_VERSION_CODE); 427fa0ea13eSFelipe Balbi 4280e1e5c47SPaul Zimmerman /* Handle USB2.0-only core configuration */ 4290e1e5c47SPaul Zimmerman if (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) == 4300e1e5c47SPaul Zimmerman DWC3_GHWPARAMS3_SSPHY_IFC_DIS) { 4310e1e5c47SPaul Zimmerman if (dwc->maximum_speed == USB_SPEED_SUPER) 4320e1e5c47SPaul Zimmerman dwc->maximum_speed = USB_SPEED_HIGH; 4330e1e5c47SPaul Zimmerman } 4340e1e5c47SPaul Zimmerman 43572246da4SFelipe Balbi /* issue device SoftReset too */ 43672246da4SFelipe Balbi timeout = jiffies + msecs_to_jiffies(500); 43772246da4SFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST); 43872246da4SFelipe Balbi do { 43972246da4SFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 44072246da4SFelipe Balbi if (!(reg & DWC3_DCTL_CSFTRST)) 44172246da4SFelipe Balbi break; 44272246da4SFelipe Balbi 44372246da4SFelipe Balbi if (time_after(jiffies, timeout)) { 44472246da4SFelipe Balbi dev_err(dwc->dev, "Reset Timed Out\n"); 44572246da4SFelipe Balbi ret = -ETIMEDOUT; 44672246da4SFelipe Balbi goto err0; 44772246da4SFelipe Balbi } 44872246da4SFelipe Balbi 44972246da4SFelipe Balbi cpu_relax(); 45072246da4SFelipe Balbi } while (true); 45172246da4SFelipe Balbi 45257303488SKishon Vijay Abraham I ret = dwc3_core_soft_reset(dwc); 45357303488SKishon Vijay Abraham I if (ret) 45457303488SKishon Vijay Abraham I goto err0; 45558a0f23fSPratyush Anand 4564878a028SSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_GCTL); 4573e87c42aSPaul Zimmerman reg &= ~DWC3_GCTL_SCALEDOWN_MASK; 4584878a028SSebastian Andrzej Siewior 459164d7731SSebastian Andrzej Siewior switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) { 4604878a028SSebastian Andrzej Siewior case DWC3_GHWPARAMS1_EN_PWROPT_CLK: 46132a4a135SFelipe Balbi /** 46232a4a135SFelipe Balbi * WORKAROUND: DWC3 revisions between 2.10a and 2.50a have an 46332a4a135SFelipe Balbi * issue which would cause xHCI compliance tests to fail. 46432a4a135SFelipe Balbi * 46532a4a135SFelipe Balbi * Because of that we cannot enable clock gating on such 46632a4a135SFelipe Balbi * configurations. 46732a4a135SFelipe Balbi * 46832a4a135SFelipe Balbi * Refers to: 46932a4a135SFelipe Balbi * 47032a4a135SFelipe Balbi * STAR#9000588375: Clock Gating, SOF Issues when ref_clk-Based 47132a4a135SFelipe Balbi * SOF/ITP Mode Used 47232a4a135SFelipe Balbi */ 47332a4a135SFelipe Balbi if ((dwc->dr_mode == USB_DR_MODE_HOST || 47432a4a135SFelipe Balbi dwc->dr_mode == USB_DR_MODE_OTG) && 47532a4a135SFelipe Balbi (dwc->revision >= DWC3_REVISION_210A && 47632a4a135SFelipe Balbi dwc->revision <= DWC3_REVISION_250A)) 47732a4a135SFelipe Balbi reg |= DWC3_GCTL_DSBLCLKGTNG | DWC3_GCTL_SOFITPSYNC; 47832a4a135SFelipe Balbi else 4794878a028SSebastian Andrzej Siewior reg &= ~DWC3_GCTL_DSBLCLKGTNG; 4804878a028SSebastian Andrzej Siewior break; 4810ffcaf37SFelipe Balbi case DWC3_GHWPARAMS1_EN_PWROPT_HIB: 4820ffcaf37SFelipe Balbi /* enable hibernation here */ 4830ffcaf37SFelipe Balbi dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4); 4842eac3992SHuang Rui 4852eac3992SHuang Rui /* 4862eac3992SHuang Rui * REVISIT Enabling this bit so that host-mode hibernation 4872eac3992SHuang Rui * will work. Device-mode hibernation is not yet implemented. 4882eac3992SHuang Rui */ 4892eac3992SHuang Rui reg |= DWC3_GCTL_GBLHIBERNATIONEN; 4900ffcaf37SFelipe Balbi break; 4914878a028SSebastian Andrzej Siewior default: 4924878a028SSebastian Andrzej Siewior dev_dbg(dwc->dev, "No power optimization available\n"); 4934878a028SSebastian Andrzej Siewior } 4944878a028SSebastian Andrzej Siewior 495946bd579SHuang Rui /* check if current dwc3 is on simulation board */ 496946bd579SHuang Rui if (dwc->hwparams.hwparams6 & DWC3_GHWPARAMS6_EN_FPGA) { 497946bd579SHuang Rui dev_dbg(dwc->dev, "it is on FPGA board\n"); 498946bd579SHuang Rui dwc->is_fpga = true; 499946bd579SHuang Rui } 500946bd579SHuang Rui 5013b81221aSHuang Rui WARN_ONCE(dwc->disable_scramble_quirk && !dwc->is_fpga, 5023b81221aSHuang Rui "disable_scramble cannot be used on non-FPGA builds\n"); 5033b81221aSHuang Rui 5043b81221aSHuang Rui if (dwc->disable_scramble_quirk && dwc->is_fpga) 5053b81221aSHuang Rui reg |= DWC3_GCTL_DISSCRAMBLE; 5063b81221aSHuang Rui else 5073b81221aSHuang Rui reg &= ~DWC3_GCTL_DISSCRAMBLE; 5083b81221aSHuang Rui 5099a5b2f31SHuang Rui if (dwc->u2exit_lfps_quirk) 5109a5b2f31SHuang Rui reg |= DWC3_GCTL_U2EXIT_LFPS; 5119a5b2f31SHuang Rui 5124878a028SSebastian Andrzej Siewior /* 5134878a028SSebastian Andrzej Siewior * WORKAROUND: DWC3 revisions <1.90a have a bug 5141d046793SPaul Zimmerman * where the device can fail to connect at SuperSpeed 5154878a028SSebastian Andrzej Siewior * and falls back to high-speed mode which causes 5161d046793SPaul Zimmerman * the device to enter a Connect/Disconnect loop 5174878a028SSebastian Andrzej Siewior */ 5184878a028SSebastian Andrzej Siewior if (dwc->revision < DWC3_REVISION_190A) 5194878a028SSebastian Andrzej Siewior reg |= DWC3_GCTL_U2RSTECN; 5204878a028SSebastian Andrzej Siewior 521789451f6SFelipe Balbi dwc3_core_num_eps(dwc); 522789451f6SFelipe Balbi 5234878a028SSebastian Andrzej Siewior dwc3_writel(dwc->regs, DWC3_GCTL, reg); 5244878a028SSebastian Andrzej Siewior 525b5a65c40SHuang Rui dwc3_phy_setup(dwc); 526b5a65c40SHuang Rui 5270ffcaf37SFelipe Balbi ret = dwc3_alloc_scratch_buffers(dwc); 5280ffcaf37SFelipe Balbi if (ret) 5290ffcaf37SFelipe Balbi goto err1; 5300ffcaf37SFelipe Balbi 5310ffcaf37SFelipe Balbi ret = dwc3_setup_scratch_buffers(dwc); 5320ffcaf37SFelipe Balbi if (ret) 5330ffcaf37SFelipe Balbi goto err2; 5340ffcaf37SFelipe Balbi 53572246da4SFelipe Balbi return 0; 53672246da4SFelipe Balbi 5370ffcaf37SFelipe Balbi err2: 5380ffcaf37SFelipe Balbi dwc3_free_scratch_buffers(dwc); 5390ffcaf37SFelipe Balbi 5400ffcaf37SFelipe Balbi err1: 5410ffcaf37SFelipe Balbi usb_phy_shutdown(dwc->usb2_phy); 5420ffcaf37SFelipe Balbi usb_phy_shutdown(dwc->usb3_phy); 54357303488SKishon Vijay Abraham I phy_exit(dwc->usb2_generic_phy); 54457303488SKishon Vijay Abraham I phy_exit(dwc->usb3_generic_phy); 5450ffcaf37SFelipe Balbi 54672246da4SFelipe Balbi err0: 54772246da4SFelipe Balbi return ret; 54872246da4SFelipe Balbi } 54972246da4SFelipe Balbi 55072246da4SFelipe Balbi static void dwc3_core_exit(struct dwc3 *dwc) 55172246da4SFelipe Balbi { 5520ffcaf37SFelipe Balbi dwc3_free_scratch_buffers(dwc); 55301b8daf7SVivek Gautam usb_phy_shutdown(dwc->usb2_phy); 55401b8daf7SVivek Gautam usb_phy_shutdown(dwc->usb3_phy); 55557303488SKishon Vijay Abraham I phy_exit(dwc->usb2_generic_phy); 55657303488SKishon Vijay Abraham I phy_exit(dwc->usb3_generic_phy); 55772246da4SFelipe Balbi } 55872246da4SFelipe Balbi 5593c9f94acSFelipe Balbi static int dwc3_core_get_phy(struct dwc3 *dwc) 56072246da4SFelipe Balbi { 5613c9f94acSFelipe Balbi struct device *dev = dwc->dev; 562941ea361SFelipe Balbi struct device_node *node = dev->of_node; 5633c9f94acSFelipe Balbi int ret; 56472246da4SFelipe Balbi 5655088b6f5SKishon Vijay Abraham I if (node) { 5665088b6f5SKishon Vijay Abraham I dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); 5675088b6f5SKishon Vijay Abraham I dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); 568bb674907SFelipe Balbi } else { 569bb674907SFelipe Balbi dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); 570bb674907SFelipe Balbi dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); 5715088b6f5SKishon Vijay Abraham I } 5725088b6f5SKishon Vijay Abraham I 573d105e7f8SFelipe Balbi if (IS_ERR(dwc->usb2_phy)) { 574d105e7f8SFelipe Balbi ret = PTR_ERR(dwc->usb2_phy); 575122f06e6SKishon Vijay Abraham I if (ret == -ENXIO || ret == -ENODEV) { 576122f06e6SKishon Vijay Abraham I dwc->usb2_phy = NULL; 577122f06e6SKishon Vijay Abraham I } else if (ret == -EPROBE_DEFER) { 578d105e7f8SFelipe Balbi return ret; 579122f06e6SKishon Vijay Abraham I } else { 58051e1e7bcSFelipe Balbi dev_err(dev, "no usb2 phy configured\n"); 581122f06e6SKishon Vijay Abraham I return ret; 582122f06e6SKishon Vijay Abraham I } 58351e1e7bcSFelipe Balbi } 58451e1e7bcSFelipe Balbi 585d105e7f8SFelipe Balbi if (IS_ERR(dwc->usb3_phy)) { 586315955d7SRuchika Kharwar ret = PTR_ERR(dwc->usb3_phy); 587122f06e6SKishon Vijay Abraham I if (ret == -ENXIO || ret == -ENODEV) { 588122f06e6SKishon Vijay Abraham I dwc->usb3_phy = NULL; 589122f06e6SKishon Vijay Abraham I } else if (ret == -EPROBE_DEFER) { 590d105e7f8SFelipe Balbi return ret; 591122f06e6SKishon Vijay Abraham I } else { 59251e1e7bcSFelipe Balbi dev_err(dev, "no usb3 phy configured\n"); 593122f06e6SKishon Vijay Abraham I return ret; 594122f06e6SKishon Vijay Abraham I } 59551e1e7bcSFelipe Balbi } 59651e1e7bcSFelipe Balbi 59757303488SKishon Vijay Abraham I dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy"); 59857303488SKishon Vijay Abraham I if (IS_ERR(dwc->usb2_generic_phy)) { 59957303488SKishon Vijay Abraham I ret = PTR_ERR(dwc->usb2_generic_phy); 60057303488SKishon Vijay Abraham I if (ret == -ENOSYS || ret == -ENODEV) { 60157303488SKishon Vijay Abraham I dwc->usb2_generic_phy = NULL; 60257303488SKishon Vijay Abraham I } else if (ret == -EPROBE_DEFER) { 60357303488SKishon Vijay Abraham I return ret; 60457303488SKishon Vijay Abraham I } else { 60557303488SKishon Vijay Abraham I dev_err(dev, "no usb2 phy configured\n"); 60657303488SKishon Vijay Abraham I return ret; 60757303488SKishon Vijay Abraham I } 60857303488SKishon Vijay Abraham I } 60957303488SKishon Vijay Abraham I 61057303488SKishon Vijay Abraham I dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy"); 61157303488SKishon Vijay Abraham I if (IS_ERR(dwc->usb3_generic_phy)) { 61257303488SKishon Vijay Abraham I ret = PTR_ERR(dwc->usb3_generic_phy); 61357303488SKishon Vijay Abraham I if (ret == -ENOSYS || ret == -ENODEV) { 61457303488SKishon Vijay Abraham I dwc->usb3_generic_phy = NULL; 61557303488SKishon Vijay Abraham I } else if (ret == -EPROBE_DEFER) { 61657303488SKishon Vijay Abraham I return ret; 61757303488SKishon Vijay Abraham I } else { 61857303488SKishon Vijay Abraham I dev_err(dev, "no usb3 phy configured\n"); 61957303488SKishon Vijay Abraham I return ret; 62057303488SKishon Vijay Abraham I } 62157303488SKishon Vijay Abraham I } 62257303488SKishon Vijay Abraham I 6233c9f94acSFelipe Balbi return 0; 6243c9f94acSFelipe Balbi } 6253c9f94acSFelipe Balbi 6265f94adfeSFelipe Balbi static int dwc3_core_init_mode(struct dwc3 *dwc) 6275f94adfeSFelipe Balbi { 6285f94adfeSFelipe Balbi struct device *dev = dwc->dev; 6295f94adfeSFelipe Balbi int ret; 6305f94adfeSFelipe Balbi 6315f94adfeSFelipe Balbi switch (dwc->dr_mode) { 6325f94adfeSFelipe Balbi case USB_DR_MODE_PERIPHERAL: 6335f94adfeSFelipe Balbi dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); 6345f94adfeSFelipe Balbi ret = dwc3_gadget_init(dwc); 6355f94adfeSFelipe Balbi if (ret) { 6365f94adfeSFelipe Balbi dev_err(dev, "failed to initialize gadget\n"); 6375f94adfeSFelipe Balbi return ret; 6385f94adfeSFelipe Balbi } 6395f94adfeSFelipe Balbi break; 6405f94adfeSFelipe Balbi case USB_DR_MODE_HOST: 6415f94adfeSFelipe Balbi dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); 6425f94adfeSFelipe Balbi ret = dwc3_host_init(dwc); 6435f94adfeSFelipe Balbi if (ret) { 6445f94adfeSFelipe Balbi dev_err(dev, "failed to initialize host\n"); 6455f94adfeSFelipe Balbi return ret; 6465f94adfeSFelipe Balbi } 6475f94adfeSFelipe Balbi break; 6485f94adfeSFelipe Balbi case USB_DR_MODE_OTG: 6495f94adfeSFelipe Balbi dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); 6505f94adfeSFelipe Balbi ret = dwc3_host_init(dwc); 6515f94adfeSFelipe Balbi if (ret) { 6525f94adfeSFelipe Balbi dev_err(dev, "failed to initialize host\n"); 6535f94adfeSFelipe Balbi return ret; 6545f94adfeSFelipe Balbi } 6555f94adfeSFelipe Balbi 6565f94adfeSFelipe Balbi ret = dwc3_gadget_init(dwc); 6575f94adfeSFelipe Balbi if (ret) { 6585f94adfeSFelipe Balbi dev_err(dev, "failed to initialize gadget\n"); 6595f94adfeSFelipe Balbi return ret; 6605f94adfeSFelipe Balbi } 6615f94adfeSFelipe Balbi break; 6625f94adfeSFelipe Balbi default: 6635f94adfeSFelipe Balbi dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode); 6645f94adfeSFelipe Balbi return -EINVAL; 6655f94adfeSFelipe Balbi } 6665f94adfeSFelipe Balbi 6675f94adfeSFelipe Balbi return 0; 6685f94adfeSFelipe Balbi } 6695f94adfeSFelipe Balbi 6705f94adfeSFelipe Balbi static void dwc3_core_exit_mode(struct dwc3 *dwc) 6715f94adfeSFelipe Balbi { 6725f94adfeSFelipe Balbi switch (dwc->dr_mode) { 6735f94adfeSFelipe Balbi case USB_DR_MODE_PERIPHERAL: 6745f94adfeSFelipe Balbi dwc3_gadget_exit(dwc); 6755f94adfeSFelipe Balbi break; 6765f94adfeSFelipe Balbi case USB_DR_MODE_HOST: 6775f94adfeSFelipe Balbi dwc3_host_exit(dwc); 6785f94adfeSFelipe Balbi break; 6795f94adfeSFelipe Balbi case USB_DR_MODE_OTG: 6805f94adfeSFelipe Balbi dwc3_host_exit(dwc); 6815f94adfeSFelipe Balbi dwc3_gadget_exit(dwc); 6825f94adfeSFelipe Balbi break; 6835f94adfeSFelipe Balbi default: 6845f94adfeSFelipe Balbi /* do nothing */ 6855f94adfeSFelipe Balbi break; 6865f94adfeSFelipe Balbi } 6875f94adfeSFelipe Balbi } 6885f94adfeSFelipe Balbi 6893c9f94acSFelipe Balbi #define DWC3_ALIGN_MASK (16 - 1) 6903c9f94acSFelipe Balbi 6913c9f94acSFelipe Balbi static int dwc3_probe(struct platform_device *pdev) 6923c9f94acSFelipe Balbi { 6933c9f94acSFelipe Balbi struct device *dev = &pdev->dev; 6943c9f94acSFelipe Balbi struct dwc3_platform_data *pdata = dev_get_platdata(dev); 6953c9f94acSFelipe Balbi struct device_node *node = dev->of_node; 6963c9f94acSFelipe Balbi struct resource *res; 6973c9f94acSFelipe Balbi struct dwc3 *dwc; 69880caf7d2SHuang Rui u8 lpm_nyet_threshold; 6993c9f94acSFelipe Balbi 700b09e99eeSAndy Shevchenko int ret; 7013c9f94acSFelipe Balbi 7023c9f94acSFelipe Balbi void __iomem *regs; 7033c9f94acSFelipe Balbi void *mem; 7043c9f94acSFelipe Balbi 7053c9f94acSFelipe Balbi mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL); 706734d5a53SJingoo Han if (!mem) 7073c9f94acSFelipe Balbi return -ENOMEM; 708734d5a53SJingoo Han 7093c9f94acSFelipe Balbi dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1); 7103c9f94acSFelipe Balbi dwc->mem = mem; 7113c9f94acSFelipe Balbi dwc->dev = dev; 7123c9f94acSFelipe Balbi 7133c9f94acSFelipe Balbi res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 7143c9f94acSFelipe Balbi if (!res) { 7153c9f94acSFelipe Balbi dev_err(dev, "missing IRQ\n"); 7163c9f94acSFelipe Balbi return -ENODEV; 7173c9f94acSFelipe Balbi } 7183c9f94acSFelipe Balbi dwc->xhci_resources[1].start = res->start; 7193c9f94acSFelipe Balbi dwc->xhci_resources[1].end = res->end; 7203c9f94acSFelipe Balbi dwc->xhci_resources[1].flags = res->flags; 7213c9f94acSFelipe Balbi dwc->xhci_resources[1].name = res->name; 7223c9f94acSFelipe Balbi 7233c9f94acSFelipe Balbi res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 7243c9f94acSFelipe Balbi if (!res) { 7253c9f94acSFelipe Balbi dev_err(dev, "missing memory resource\n"); 7263c9f94acSFelipe Balbi return -ENODEV; 7273c9f94acSFelipe Balbi } 7283c9f94acSFelipe Balbi 729f32a5e23SVivek Gautam dwc->xhci_resources[0].start = res->start; 730f32a5e23SVivek Gautam dwc->xhci_resources[0].end = dwc->xhci_resources[0].start + 731f32a5e23SVivek Gautam DWC3_XHCI_REGS_END; 732f32a5e23SVivek Gautam dwc->xhci_resources[0].flags = res->flags; 733f32a5e23SVivek Gautam dwc->xhci_resources[0].name = res->name; 734f32a5e23SVivek Gautam 735f32a5e23SVivek Gautam res->start += DWC3_GLOBALS_REGS_START; 736f32a5e23SVivek Gautam 737f32a5e23SVivek Gautam /* 738f32a5e23SVivek Gautam * Request memory region but exclude xHCI regs, 739f32a5e23SVivek Gautam * since it will be requested by the xhci-plat driver. 740f32a5e23SVivek Gautam */ 741f32a5e23SVivek Gautam regs = devm_ioremap_resource(dev, res); 742f32a5e23SVivek Gautam if (IS_ERR(regs)) 743f32a5e23SVivek Gautam return PTR_ERR(regs); 744f32a5e23SVivek Gautam 745f32a5e23SVivek Gautam dwc->regs = regs; 746f32a5e23SVivek Gautam dwc->regs_size = resource_size(res); 747f32a5e23SVivek Gautam /* 748f32a5e23SVivek Gautam * restore res->start back to its original value so that, 749f32a5e23SVivek Gautam * in case the probe is deferred, we don't end up getting error in 750f32a5e23SVivek Gautam * request the memory region the next time probe is called. 751f32a5e23SVivek Gautam */ 752f32a5e23SVivek Gautam res->start -= DWC3_GLOBALS_REGS_START; 753f32a5e23SVivek Gautam 75480caf7d2SHuang Rui /* default to highest possible threshold */ 75580caf7d2SHuang Rui lpm_nyet_threshold = 0xff; 75680caf7d2SHuang Rui 7573c9f94acSFelipe Balbi if (node) { 7583c9f94acSFelipe Balbi dwc->maximum_speed = of_usb_get_maximum_speed(node); 75980caf7d2SHuang Rui dwc->has_lpm_erratum = of_property_read_bool(node, 76080caf7d2SHuang Rui "snps,has-lpm-erratum"); 76180caf7d2SHuang Rui of_property_read_u8(node, "snps,lpm-nyet-threshold", 76280caf7d2SHuang Rui &lpm_nyet_threshold); 7633c9f94acSFelipe Balbi 76480caf7d2SHuang Rui dwc->needs_fifo_resize = of_property_read_bool(node, 76580caf7d2SHuang Rui "tx-fifo-resize"); 7663c9f94acSFelipe Balbi dwc->dr_mode = of_usb_get_dr_mode(node); 7673b81221aSHuang Rui 7683b81221aSHuang Rui dwc->disable_scramble_quirk = of_property_read_bool(node, 7693b81221aSHuang Rui "snps,disable_scramble_quirk"); 7709a5b2f31SHuang Rui dwc->u2exit_lfps_quirk = of_property_read_bool(node, 7719a5b2f31SHuang Rui "snps,u2exit_lfps_quirk"); 772b5a65c40SHuang Rui dwc->u2ss_inp3_quirk = of_property_read_bool(node, 773b5a65c40SHuang Rui "snps,u2ss_inp3_quirk"); 774df31f5b3SHuang Rui dwc->req_p1p2p3_quirk = of_property_read_bool(node, 775df31f5b3SHuang Rui "snps,req_p1p2p3_quirk"); 776a2a1d0f5SHuang Rui dwc->del_p1p2p3_quirk = of_property_read_bool(node, 777a2a1d0f5SHuang Rui "snps,del_p1p2p3_quirk"); 77841c06ffdSHuang Rui dwc->del_phy_power_chg_quirk = of_property_read_bool(node, 77941c06ffdSHuang Rui "snps,del_phy_power_chg_quirk"); 780fb67afcaSHuang Rui dwc->lfps_filter_quirk = of_property_read_bool(node, 781fb67afcaSHuang Rui "snps,lfps_filter_quirk"); 782*14f4ac53SHuang Rui dwc->rx_detect_poll_quirk = of_property_read_bool(node, 783*14f4ac53SHuang Rui "snps,rx_detect_poll_quirk"); 7843c9f94acSFelipe Balbi } else if (pdata) { 7853c9f94acSFelipe Balbi dwc->maximum_speed = pdata->maximum_speed; 78680caf7d2SHuang Rui dwc->has_lpm_erratum = pdata->has_lpm_erratum; 78780caf7d2SHuang Rui if (pdata->lpm_nyet_threshold) 78880caf7d2SHuang Rui lpm_nyet_threshold = pdata->lpm_nyet_threshold; 7893c9f94acSFelipe Balbi 7903c9f94acSFelipe Balbi dwc->needs_fifo_resize = pdata->tx_fifo_resize; 7913c9f94acSFelipe Balbi dwc->dr_mode = pdata->dr_mode; 7923b81221aSHuang Rui 7933b81221aSHuang Rui dwc->disable_scramble_quirk = pdata->disable_scramble_quirk; 7949a5b2f31SHuang Rui dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk; 795b5a65c40SHuang Rui dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk; 796df31f5b3SHuang Rui dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk; 797a2a1d0f5SHuang Rui dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk; 79841c06ffdSHuang Rui dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk; 799fb67afcaSHuang Rui dwc->lfps_filter_quirk = pdata->lfps_filter_quirk; 800*14f4ac53SHuang Rui dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk; 8013c9f94acSFelipe Balbi } 8023c9f94acSFelipe Balbi 8033c9f94acSFelipe Balbi /* default to superspeed if no maximum_speed passed */ 8043c9f94acSFelipe Balbi if (dwc->maximum_speed == USB_SPEED_UNKNOWN) 8053c9f94acSFelipe Balbi dwc->maximum_speed = USB_SPEED_SUPER; 8063c9f94acSFelipe Balbi 80780caf7d2SHuang Rui dwc->lpm_nyet_threshold = lpm_nyet_threshold; 80880caf7d2SHuang Rui 8093c9f94acSFelipe Balbi ret = dwc3_core_get_phy(dwc); 8103c9f94acSFelipe Balbi if (ret) 8113c9f94acSFelipe Balbi return ret; 8123c9f94acSFelipe Balbi 81372246da4SFelipe Balbi spin_lock_init(&dwc->lock); 81472246da4SFelipe Balbi platform_set_drvdata(pdev, dwc); 81572246da4SFelipe Balbi 81619bacdc9SHeikki Krogerus if (!dev->dma_mask) { 817ddff14f1SKishon Vijay Abraham I dev->dma_mask = dev->parent->dma_mask; 818ddff14f1SKishon Vijay Abraham I dev->dma_parms = dev->parent->dma_parms; 819ddff14f1SKishon Vijay Abraham I dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask); 82019bacdc9SHeikki Krogerus } 821ddff14f1SKishon Vijay Abraham I 822802ca850SChanho Park pm_runtime_enable(dev); 823802ca850SChanho Park pm_runtime_get_sync(dev); 824802ca850SChanho Park pm_runtime_forbid(dev); 82572246da4SFelipe Balbi 8264fd24483SKishon Vijay Abraham I dwc3_cache_hwparams(dwc); 8274fd24483SKishon Vijay Abraham I 8283921426bSFelipe Balbi ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); 8293921426bSFelipe Balbi if (ret) { 8303921426bSFelipe Balbi dev_err(dwc->dev, "failed to allocate event buffers\n"); 8313921426bSFelipe Balbi ret = -ENOMEM; 8323921426bSFelipe Balbi goto err0; 8333921426bSFelipe Balbi } 8343921426bSFelipe Balbi 83532a4a135SFelipe Balbi if (IS_ENABLED(CONFIG_USB_DWC3_HOST)) 83632a4a135SFelipe Balbi dwc->dr_mode = USB_DR_MODE_HOST; 83732a4a135SFelipe Balbi else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET)) 83832a4a135SFelipe Balbi dwc->dr_mode = USB_DR_MODE_PERIPHERAL; 83932a4a135SFelipe Balbi 84032a4a135SFelipe Balbi if (dwc->dr_mode == USB_DR_MODE_UNKNOWN) 84132a4a135SFelipe Balbi dwc->dr_mode = USB_DR_MODE_OTG; 84232a4a135SFelipe Balbi 84372246da4SFelipe Balbi ret = dwc3_core_init(dwc); 84472246da4SFelipe Balbi if (ret) { 845802ca850SChanho Park dev_err(dev, "failed to initialize core\n"); 8463921426bSFelipe Balbi goto err0; 84772246da4SFelipe Balbi } 84872246da4SFelipe Balbi 8493088f108SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb2_phy, 0); 8503088f108SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb3_phy, 0); 85157303488SKishon Vijay Abraham I ret = phy_power_on(dwc->usb2_generic_phy); 85257303488SKishon Vijay Abraham I if (ret < 0) 85357303488SKishon Vijay Abraham I goto err1; 85457303488SKishon Vijay Abraham I 85557303488SKishon Vijay Abraham I ret = phy_power_on(dwc->usb3_generic_phy); 85657303488SKishon Vijay Abraham I if (ret < 0) 85757303488SKishon Vijay Abraham I goto err_usb2phy_power; 8583088f108SKishon Vijay Abraham I 859f122d33eSFelipe Balbi ret = dwc3_event_buffers_setup(dwc); 860f122d33eSFelipe Balbi if (ret) { 861f122d33eSFelipe Balbi dev_err(dwc->dev, "failed to setup event buffers\n"); 86257303488SKishon Vijay Abraham I goto err_usb3phy_power; 863f122d33eSFelipe Balbi } 864f122d33eSFelipe Balbi 8655f94adfeSFelipe Balbi ret = dwc3_core_init_mode(dwc); 8665f94adfeSFelipe Balbi if (ret) 867f122d33eSFelipe Balbi goto err2; 86872246da4SFelipe Balbi 86972246da4SFelipe Balbi ret = dwc3_debugfs_init(dwc); 87072246da4SFelipe Balbi if (ret) { 871802ca850SChanho Park dev_err(dev, "failed to initialize debugfs\n"); 872f122d33eSFelipe Balbi goto err3; 87372246da4SFelipe Balbi } 87472246da4SFelipe Balbi 875802ca850SChanho Park pm_runtime_allow(dev); 87672246da4SFelipe Balbi 87772246da4SFelipe Balbi return 0; 87872246da4SFelipe Balbi 879f122d33eSFelipe Balbi err3: 8805f94adfeSFelipe Balbi dwc3_core_exit_mode(dwc); 88172246da4SFelipe Balbi 882f122d33eSFelipe Balbi err2: 883f122d33eSFelipe Balbi dwc3_event_buffers_cleanup(dwc); 884f122d33eSFelipe Balbi 88557303488SKishon Vijay Abraham I err_usb3phy_power: 88657303488SKishon Vijay Abraham I phy_power_off(dwc->usb3_generic_phy); 88757303488SKishon Vijay Abraham I 88857303488SKishon Vijay Abraham I err_usb2phy_power: 88957303488SKishon Vijay Abraham I phy_power_off(dwc->usb2_generic_phy); 89057303488SKishon Vijay Abraham I 891802ca850SChanho Park err1: 892501fae51SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb2_phy, 1); 893501fae51SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb3_phy, 1); 89472246da4SFelipe Balbi dwc3_core_exit(dwc); 89572246da4SFelipe Balbi 8963921426bSFelipe Balbi err0: 8973921426bSFelipe Balbi dwc3_free_event_buffers(dwc); 8983921426bSFelipe Balbi 89972246da4SFelipe Balbi return ret; 90072246da4SFelipe Balbi } 90172246da4SFelipe Balbi 902fb4e98abSBill Pemberton static int dwc3_remove(struct platform_device *pdev) 90372246da4SFelipe Balbi { 90472246da4SFelipe Balbi struct dwc3 *dwc = platform_get_drvdata(pdev); 90572246da4SFelipe Balbi 906dc99f16fSFelipe Balbi dwc3_debugfs_exit(dwc); 907dc99f16fSFelipe Balbi dwc3_core_exit_mode(dwc); 908dc99f16fSFelipe Balbi dwc3_event_buffers_cleanup(dwc); 909dc99f16fSFelipe Balbi dwc3_free_event_buffers(dwc); 910dc99f16fSFelipe Balbi 9118ba007a9SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb2_phy, 1); 9128ba007a9SKishon Vijay Abraham I usb_phy_set_suspend(dwc->usb3_phy, 1); 91357303488SKishon Vijay Abraham I phy_power_off(dwc->usb2_generic_phy); 91457303488SKishon Vijay Abraham I phy_power_off(dwc->usb3_generic_phy); 9158ba007a9SKishon Vijay Abraham I 91672246da4SFelipe Balbi dwc3_core_exit(dwc); 91772246da4SFelipe Balbi 9187415f17cSFelipe Balbi pm_runtime_put_sync(&pdev->dev); 9197415f17cSFelipe Balbi pm_runtime_disable(&pdev->dev); 9207415f17cSFelipe Balbi 92172246da4SFelipe Balbi return 0; 92272246da4SFelipe Balbi } 92372246da4SFelipe Balbi 9247415f17cSFelipe Balbi #ifdef CONFIG_PM_SLEEP 9257415f17cSFelipe Balbi static int dwc3_suspend(struct device *dev) 9267415f17cSFelipe Balbi { 9277415f17cSFelipe Balbi struct dwc3 *dwc = dev_get_drvdata(dev); 9287415f17cSFelipe Balbi unsigned long flags; 9297415f17cSFelipe Balbi 9307415f17cSFelipe Balbi spin_lock_irqsave(&dwc->lock, flags); 9317415f17cSFelipe Balbi 932a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 933a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 934a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 9357415f17cSFelipe Balbi dwc3_gadget_suspend(dwc); 9367415f17cSFelipe Balbi /* FALLTHROUGH */ 937a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 9387415f17cSFelipe Balbi default: 9390b0231aaSFelipe Balbi dwc3_event_buffers_cleanup(dwc); 9407415f17cSFelipe Balbi break; 9417415f17cSFelipe Balbi } 9427415f17cSFelipe Balbi 9437415f17cSFelipe Balbi dwc->gctl = dwc3_readl(dwc->regs, DWC3_GCTL); 9447415f17cSFelipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 9457415f17cSFelipe Balbi 9467415f17cSFelipe Balbi usb_phy_shutdown(dwc->usb3_phy); 9477415f17cSFelipe Balbi usb_phy_shutdown(dwc->usb2_phy); 94857303488SKishon Vijay Abraham I phy_exit(dwc->usb2_generic_phy); 94957303488SKishon Vijay Abraham I phy_exit(dwc->usb3_generic_phy); 9507415f17cSFelipe Balbi 9517415f17cSFelipe Balbi return 0; 9527415f17cSFelipe Balbi } 9537415f17cSFelipe Balbi 9547415f17cSFelipe Balbi static int dwc3_resume(struct device *dev) 9557415f17cSFelipe Balbi { 9567415f17cSFelipe Balbi struct dwc3 *dwc = dev_get_drvdata(dev); 9577415f17cSFelipe Balbi unsigned long flags; 95857303488SKishon Vijay Abraham I int ret; 9597415f17cSFelipe Balbi 9607415f17cSFelipe Balbi usb_phy_init(dwc->usb3_phy); 9617415f17cSFelipe Balbi usb_phy_init(dwc->usb2_phy); 96257303488SKishon Vijay Abraham I ret = phy_init(dwc->usb2_generic_phy); 96357303488SKishon Vijay Abraham I if (ret < 0) 96457303488SKishon Vijay Abraham I return ret; 96557303488SKishon Vijay Abraham I 96657303488SKishon Vijay Abraham I ret = phy_init(dwc->usb3_generic_phy); 96757303488SKishon Vijay Abraham I if (ret < 0) 96857303488SKishon Vijay Abraham I goto err_usb2phy_init; 9697415f17cSFelipe Balbi 9707415f17cSFelipe Balbi spin_lock_irqsave(&dwc->lock, flags); 9717415f17cSFelipe Balbi 9720b0231aaSFelipe Balbi dwc3_event_buffers_setup(dwc); 9737415f17cSFelipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, dwc->gctl); 9747415f17cSFelipe Balbi 975a45c82b8SRuchika Kharwar switch (dwc->dr_mode) { 976a45c82b8SRuchika Kharwar case USB_DR_MODE_PERIPHERAL: 977a45c82b8SRuchika Kharwar case USB_DR_MODE_OTG: 9787415f17cSFelipe Balbi dwc3_gadget_resume(dwc); 9797415f17cSFelipe Balbi /* FALLTHROUGH */ 980a45c82b8SRuchika Kharwar case USB_DR_MODE_HOST: 9817415f17cSFelipe Balbi default: 9827415f17cSFelipe Balbi /* do nothing */ 9837415f17cSFelipe Balbi break; 9847415f17cSFelipe Balbi } 9857415f17cSFelipe Balbi 9867415f17cSFelipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 9877415f17cSFelipe Balbi 9887415f17cSFelipe Balbi pm_runtime_disable(dev); 9897415f17cSFelipe Balbi pm_runtime_set_active(dev); 9907415f17cSFelipe Balbi pm_runtime_enable(dev); 9917415f17cSFelipe Balbi 9927415f17cSFelipe Balbi return 0; 99357303488SKishon Vijay Abraham I 99457303488SKishon Vijay Abraham I err_usb2phy_init: 99557303488SKishon Vijay Abraham I phy_exit(dwc->usb2_generic_phy); 99657303488SKishon Vijay Abraham I 99757303488SKishon Vijay Abraham I return ret; 9987415f17cSFelipe Balbi } 9997415f17cSFelipe Balbi 10007415f17cSFelipe Balbi static const struct dev_pm_ops dwc3_dev_pm_ops = { 10017415f17cSFelipe Balbi SET_SYSTEM_SLEEP_PM_OPS(dwc3_suspend, dwc3_resume) 10027415f17cSFelipe Balbi }; 10037415f17cSFelipe Balbi 10047415f17cSFelipe Balbi #define DWC3_PM_OPS &(dwc3_dev_pm_ops) 10057415f17cSFelipe Balbi #else 10067415f17cSFelipe Balbi #define DWC3_PM_OPS NULL 10077415f17cSFelipe Balbi #endif 10087415f17cSFelipe Balbi 10095088b6f5SKishon Vijay Abraham I #ifdef CONFIG_OF 10105088b6f5SKishon Vijay Abraham I static const struct of_device_id of_dwc3_match[] = { 10115088b6f5SKishon Vijay Abraham I { 101222a5aa17SFelipe Balbi .compatible = "snps,dwc3" 101322a5aa17SFelipe Balbi }, 101422a5aa17SFelipe Balbi { 10155088b6f5SKishon Vijay Abraham I .compatible = "synopsys,dwc3" 10165088b6f5SKishon Vijay Abraham I }, 10175088b6f5SKishon Vijay Abraham I { }, 10185088b6f5SKishon Vijay Abraham I }; 10195088b6f5SKishon Vijay Abraham I MODULE_DEVICE_TABLE(of, of_dwc3_match); 10205088b6f5SKishon Vijay Abraham I #endif 10215088b6f5SKishon Vijay Abraham I 1022404905a6SHeikki Krogerus #ifdef CONFIG_ACPI 1023404905a6SHeikki Krogerus 1024404905a6SHeikki Krogerus #define ACPI_ID_INTEL_BSW "808622B7" 1025404905a6SHeikki Krogerus 1026404905a6SHeikki Krogerus static const struct acpi_device_id dwc3_acpi_match[] = { 1027404905a6SHeikki Krogerus { ACPI_ID_INTEL_BSW, 0 }, 1028404905a6SHeikki Krogerus { }, 1029404905a6SHeikki Krogerus }; 1030404905a6SHeikki Krogerus MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match); 1031404905a6SHeikki Krogerus #endif 1032404905a6SHeikki Krogerus 103372246da4SFelipe Balbi static struct platform_driver dwc3_driver = { 103472246da4SFelipe Balbi .probe = dwc3_probe, 10357690417dSBill Pemberton .remove = dwc3_remove, 103672246da4SFelipe Balbi .driver = { 103772246da4SFelipe Balbi .name = "dwc3", 10385088b6f5SKishon Vijay Abraham I .of_match_table = of_match_ptr(of_dwc3_match), 1039404905a6SHeikki Krogerus .acpi_match_table = ACPI_PTR(dwc3_acpi_match), 10407415f17cSFelipe Balbi .pm = DWC3_PM_OPS, 104172246da4SFelipe Balbi }, 104272246da4SFelipe Balbi }; 104372246da4SFelipe Balbi 1044b1116dccSTobias Klauser module_platform_driver(dwc3_driver); 1045b1116dccSTobias Klauser 10467ae4fc4dSSebastian Andrzej Siewior MODULE_ALIAS("platform:dwc3"); 104772246da4SFelipe Balbi MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); 10485945f789SFelipe Balbi MODULE_LICENSE("GPL v2"); 104972246da4SFelipe Balbi MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver"); 1050