gadget.c revision 61d58242f634642de42d6a4098913b7254a65053
172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * gadget.c - DesignWare USB3 DRD Controller Gadget Framework Link 372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com 572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * All rights reserved. 672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Authors: Felipe Balbi <balbi@ti.com>, 872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 1072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Redistribution and use in source and binary forms, with or without 1172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * modification, are permitted provided that the following conditions 1272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * are met: 1372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 1. Redistributions of source code must retain the above copyright 1472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * notice, this list of conditions, and the following disclaimer, 1572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * without modification. 1672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 2. Redistributions in binary form must reproduce the above copyright 1772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * notice, this list of conditions and the following disclaimer in the 1872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * documentation and/or other materials provided with the distribution. 1972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 3. The names of the above-listed copyright holders may not be used 2072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * to endorse or promote products derived from this software without 2172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * specific prior written permission. 2272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 2372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * ALTERNATIVELY, this software may be distributed under the terms of the 2472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * GNU General Public License ("GPL") version 2, as published by the Free 2572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Software Foundation. 2672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 2772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 2872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 2972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 3072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 3172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 3272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 3372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 3472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 3572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 3672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 3972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 4072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/kernel.h> 4172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/delay.h> 4272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/slab.h> 4372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/spinlock.h> 4472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/platform_device.h> 4572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/pm_runtime.h> 4672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/interrupt.h> 4772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/io.h> 4872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/list.h> 4972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/dma-mapping.h> 5072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/usb/ch9.h> 5272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/usb/gadget.h> 5372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include "core.h" 5572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include "gadget.h" 5672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include "io.h" 5772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#define DMA_ADDR_INVALID (~(dma_addr_t)0) 5972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 6072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_map_buffer_to_dma(struct dwc3_request *req) 6172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 6272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = req->dep->dwc; 6372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 6472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->request.dma == DMA_ADDR_INVALID) { 6572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.dma = dma_map_single(dwc->dev, req->request.buf, 6672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, req->direction 6772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 6872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->mapped = true; 6972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 7072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_sync_single_for_device(dwc->dev, req->request.dma, 7172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, req->direction 7272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 7372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->mapped = false; 7472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 7572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 7672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 7772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_unmap_buffer_from_dma(struct dwc3_request *req) 7872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 7972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = req->dep->dwc; 8072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 8172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->mapped) { 8272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_unmap_single(dwc->dev, req->request.dma, 8372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, req->direction 8472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 8572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->mapped = 0; 86f198ead21bcb7b03d7bb2cba7ba0f5ad615a3862Felipe Balbi req->request.dma = DMA_ADDR_INVALID; 8772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 8872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_sync_single_for_cpu(dwc->dev, req->request.dma, 8972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, req->direction 9072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 9172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 9272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 9372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 9472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, 9572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int status) 9672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 9772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 9872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 9972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->queued) { 10072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot++; 10172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 10272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Skip LINK TRB. We can't use req->trb and check for 10372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * DWC3_TRBCTL_LINK_TRB because it points the TRB we just 10472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * completed (not the LINK TRB). 10572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 10672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (((dep->busy_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && 10772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usb_endpoint_xfer_isoc(dep->desc)) 10872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot++; 10972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 11072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&req->list); 11172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 11272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->request.status == -EINPROGRESS) 11372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.status = status; 11472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 11572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_unmap_buffer_from_dma(req); 11672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 11772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n", 11872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req, dep->name, req->request.actual, 11972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, status); 12072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 12272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.complete(&req->dep->endpoint, &req->request); 12372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 12472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 12572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const char *dwc3_gadget_ep_cmd_string(u8 cmd) 12772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 12872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (cmd) { 12972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_DEPSTARTCFG: 13072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Start New Configuration"; 13172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_ENDTRANSFER: 13272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "End Transfer"; 13372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_UPDATETRANSFER: 13472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Update Transfer"; 13572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_STARTTRANSFER: 13672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Start Transfer"; 13772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_CLEARSTALL: 13872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Clear Stall"; 13972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETSTALL: 14072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Stall"; 14172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_GETSEQNUMBER: 14272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Get Data Sequence Number"; 14372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETTRANSFRESOURCE: 14472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Endpoint Transfer Resource"; 14572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETEPCONFIG: 14672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Endpoint Configuration"; 14772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 14872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "UNKNOWN command"; 14972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 15072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 15172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 15272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, 15372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned cmd, struct dwc3_gadget_ep_cmd_params *params) 15472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 15572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = dwc->eps[ep]; 15661d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior u32 timeout = 500; 15772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 15872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 15972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: cmd '%s' params %08x %08x %08x\n", 16072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, 16172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep_cmd_string(cmd), params->param0.raw, 16272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params->param1.raw, params->param2.raw); 16372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 16472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0.raw); 16572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1.raw); 16672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR2(ep), params->param2.raw); 16772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 16872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMD(ep), cmd | DWC3_DEPCMD_CMDACT); 16972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 17072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DEPCMD(ep)); 17172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(reg & DWC3_DEPCMD_CMDACT)) { 172164f6e141ed214bda30fb219d41ec3254bd90886Felipe Balbi dev_vdbg(dwc->dev, "Command Complete --> %d\n", 173164f6e141ed214bda30fb219d41ec3254bd90886Felipe Balbi DWC3_DEPCMD_STATUS(reg)); 17472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 17572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 17672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 17772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 17872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We can't sleep here, because it is also called from 17972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * interrupt context. 18072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 18172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout--; 18272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!timeout) 18372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ETIMEDOUT; 18472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 18561d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior udelay(1); 18672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 18772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 18872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 18972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep, 19072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb) 19172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 19272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 offset = trb - dep->trb_pool; 19372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 19472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dep->trb_pool_dma + offset; 19572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 19672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 19772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_alloc_trb_pool(struct dwc3_ep *dep) 19872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 19972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 20072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->trb_pool) 20272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 20372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number == 0 || dep->number == 1) 20572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 20672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool = dma_alloc_coherent(dwc->dev, 20872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi sizeof(struct dwc3_trb) * DWC3_TRB_NUM, 20972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dep->trb_pool_dma, GFP_KERNEL); 21072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep->trb_pool) { 21172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dep->dwc->dev, "failed to allocate trb pool for %s\n", 21272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 21372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ENOMEM; 21472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 21572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 21672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 21772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 21872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 21972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_free_trb_pool(struct dwc3_ep *dep) 22072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 22172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 22272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM, 22472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool, dep->trb_pool_dma); 22572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool = NULL; 22772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool_dma = 0; 22872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 22972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep) 23172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 23272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 23372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 23472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 23672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number != 1) { 23872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_DEPSTARTCFG; 23972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* XferRscIdx == 0 for ep0 and 2 for the remaining */ 24072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number > 1) 24172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(2); 24272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, ¶ms); 24472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 24572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 24772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 24872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, 25072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 25172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 25272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 25372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 25572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param0.depcfg.ep_type = usb_endpoint_type(desc); 25729cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto params.param0.depcfg.max_packet_size = usb_endpoint_maxp(desc); 25872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param1.depcfg.xfer_complete_enable = true; 26072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param1.depcfg.xfer_not_ready_enable = true; 26172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 26272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(desc)) 26372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param1.depcfg.xfer_in_progress_enable = true; 26472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 26572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 26672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We are doing 1:1 mapping for endpoints, meaning 26772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Physical Endpoints 2 maps to Logical Endpoint 2 and 26872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * so on. We consider the direction bit as part of the physical 26972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * endpoint number. So USB endpoint 0x81 is 0x03. 27072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 27172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param1.depcfg.ep_number = dep->number; 27272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 27372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 27472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We must use the lower 16 TX FIFOs even though 27572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * HW might have more 27672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 27772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->direction) 27872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param0.depcfg.fifo_number = dep->number >> 1; 27972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 28072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (desc->bInterval) { 28172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param1.depcfg.binterval_m1 = desc->bInterval - 1; 28272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->interval = 1 << (desc->bInterval - 1); 28372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 28472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 28572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, dep->number, 28672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETEPCONFIG, ¶ms); 28772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 28872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 28972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep) 29072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 29172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 29272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 29372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 29472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 29572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param0.depxfercfg.number_xfer_resources = 1; 29672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 29772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, dep->number, 29872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETTRANSFRESOURCE, ¶ms); 29972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 30072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 30172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 30272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * __dwc3_gadget_ep_enable - Initializes a HW endpoint 30372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: endpoint to be initialized 30472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @desc: USB Endpoint Descriptor 30572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 30672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Caller should take care of locking 30772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 30872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, 30972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 31072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 31172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 31272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 31372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = -ENOMEM; 31472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 31572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 31672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_start_config(dwc, dep); 31772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 31872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 31972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 32072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 32172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_set_ep_config(dwc, dep, desc); 32272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 32372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 32472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 32572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 32672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb_st_hw; 32772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb_link_hw; 32872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb trb_link; 32972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_set_xfer_resource(dwc, dep); 33172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 33272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 33372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->desc = desc; 33572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->type = usb_endpoint_type(desc); 33672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_ENABLED; 33772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); 33972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DALEPENA_EP(dep->number); 34072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); 34172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb_endpoint_xfer_isoc(desc)) 34372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 34472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(&trb_link, 0, sizeof(trb_link)); 34672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Link TRB for ISOC. The HWO but is never reset */ 34872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_st_hw = &dep->trb_pool[0]; 34972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 35072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link.bplh = dwc3_trb_dma_offset(dep, trb_st_hw); 35172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link.trbctl = DWC3_TRBCTL_LINK_TRB; 35272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link.hwo = true; 35372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 35472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link_hw = &dep->trb_pool[DWC3_TRB_NUM - 1]; 35572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_trb_to_hw(&trb_link, trb_link_hw); 35672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 35772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 35872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 35972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 36072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 361624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewiorstatic void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum); 362624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewiorstatic void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep) 36372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 36472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 36572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 366624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior if (!list_empty(&dep->req_queued)) 367624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_stop_active_transfer(dwc, dep->number); 368624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior 36972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (!list_empty(&dep->request_list)) { 37072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->request_list); 37172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 372624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_gadget_giveback(dep, req, -ESHUTDOWN); 37372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 37472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 37572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 37772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * __dwc3_gadget_ep_disable - Disables a HW endpoint 37872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: the endpoint to disable 37972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 380624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * This function also removes requests which are currently processed ny the 381624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * hardware and those which are not yet scheduled. 382624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * Caller should take care of locking. 38372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 38472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) 38572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 38672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 38772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 38872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 38972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_ENABLED; 390624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_remove_requests(dwc, dep); 39172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); 39372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DALEPENA_EP(dep->number); 39472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); 39572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->desc = NULL; 39772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->type = 0; 39872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 40072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 40172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 40372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep0_enable(struct usb_ep *ep, 40572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 40672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 40772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 40872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 40972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 41072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep0_disable(struct usb_ep *ep) 41172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 41272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 41372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 41472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 41572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 41672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 41772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_enable(struct usb_ep *ep, 41872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 41972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 42072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 42172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc; 42272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 42372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 42472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 42572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) { 42672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: invalid parameters\n"); 42772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 42872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 42972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 43072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!desc->wMaxPacketSize) { 43172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: missing wMaxPacketSize\n"); 43272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 43372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 43472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 43572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = to_dwc3_ep(ep); 43672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc = dep->dwc; 43772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 43872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (usb_endpoint_type(desc)) { 43972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_CONTROL: 44072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-control", sizeof(dep->name)); 44172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 44272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_ISOC: 44372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-isoc", sizeof(dep->name)); 44472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 44572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_BULK: 44672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-bulk", sizeof(dep->name)); 44772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 44872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_INT: 44972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-int", sizeof(dep->name)); 45072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 45172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 45272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "invalid endpoint transfer type\n"); 45372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 45472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->flags & DWC3_EP_ENABLED) { 45672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_WARN_ONCE(dwc->dev, true, "%s is already enabled\n", 45772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 45872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 45972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 46072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Enabling %s\n", dep->name); 46272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 46472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_enable(dep, desc); 46572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 46672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 46872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 46972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 47072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_disable(struct usb_ep *ep) 47172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 47272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 47372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc; 47472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 47572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 47672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 47772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ep) { 47872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: invalid parameters\n"); 47972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 48072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 48172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 48272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = to_dwc3_ep(ep); 48372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc = dep->dwc; 48472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 48572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 48672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_WARN_ONCE(dwc->dev, true, "%s is already disabled\n", 48772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 48872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 48972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 49072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 49172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi snprintf(dep->name, sizeof(dep->name), "ep%d%s", 49272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number >> 1, 49372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi (dep->number & 1) ? "in" : "out"); 49472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 49572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 49672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_disable(dep); 49772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 49872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 49972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 50072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 50172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 50272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, 50372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi gfp_t gfp_flags) 50472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 50572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 50672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 50772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 50872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 50972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = kzalloc(sizeof(*req), gfp_flags); 51072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) { 51172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "not enough memory\n"); 51272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return NULL; 51372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 51472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->epnum = dep->number; 51672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->dep = dep; 51772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.dma = DMA_ADDR_INVALID; 51872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return &req->request; 52072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 52172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 52272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_ep_free_request(struct usb_ep *ep, 52372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_request *request) 52472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 52572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 52672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 52772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi kfree(req); 52872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 52972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 53072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* 53172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * dwc3_prepare_trbs - setup TRBs from requests 53272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: endpoint for which requests are being prepared 53372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @starting: true if the endpoint is idle and no requests are queued. 53472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 53572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * The functions goes through the requests list and setups TRBs for the 53672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfers. The functions returns once there are not more TRBs available or 53772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * it run out of requests. 53872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 53972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct dwc3_request *dwc3_prepare_trbs(struct dwc3_ep *dep, 54072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi bool starting) 54172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 54272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req, *n, *ret = NULL; 54372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb_hw; 54472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb trb; 54572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 trbs_left; 54672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 54772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM); 54872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 54972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* the first request must not be queued */ 55072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK; 55172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 55272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * if busy & slot are equal than it is either full or empty. If we are 55372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * starting to proceed requests then we are empty. Otherwise we ar 55472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * full and don't do anything 55572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 55672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!trbs_left) { 55772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!starting) 55872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return NULL; 55972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left = DWC3_TRB_NUM; 56072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 56172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In case we start from scratch, we queue the ISOC requests 56272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * starting from slot 1. This is done because we use ring 56372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * buffer and have no LST bit to stop us. Instead, we place 56472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IOC bit TRB_NUM/4. We try to avoid to having an interrupt 56572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * after the first request so we start at slot 1 and have 56672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 7 requests proceed before we hit the first IOC. 56772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Other transfer types don't use the ring buffer and are 56872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * processed from the first TRB until the last one. Since we 56972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * don't wrap around we have to start at the beginning. 57072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 57172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 57272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot = 1; 57372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot = 1; 57472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 57572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot = 0; 57672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot = 0; 57772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 57872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 57972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 58072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* The last TRB is a link TRB, not used for xfer */ 58172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((trbs_left <= 1) && usb_endpoint_xfer_isoc(dep->desc)) 58272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return NULL; 58372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 58472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry_safe(req, n, &dep->request_list, list) { 58572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int last_one = 0; 58672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int cur_slot; 58772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 58872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_hw = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK]; 58972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cur_slot = dep->free_slot; 59072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot++; 59172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 59272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Skip the LINK-TRB on ISOC */ 59372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (((cur_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && 59472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usb_endpoint_xfer_isoc(dep->desc)) 59572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 59672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 59772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_move_request_queued(req); 59872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(&trb, 0, sizeof(trb)); 59972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left--; 60072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 60172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Is our TRB pool empty? */ 60272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!trbs_left) 60372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi last_one = 1; 60472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Is this the last request? */ 60572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->request_list)) 60672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi last_one = 1; 60772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 60872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 60972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * FIXME we shouldn't need to set LST bit always but we are 61072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * facing some weird problem with the Hardware where it doesn't 61172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * complete even though it has been previously started. 61272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 61372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * While we're debugging the problem, as a workaround to 61472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * multiple TRBs handling, use only one TRB at a time. 61572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 61672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi last_one = 1; 61772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 61872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->trb = trb_hw; 61972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ret) 62072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = req; 62172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 62272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.bplh = req->request.dma; 62372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 62472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 62572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.isp_imi = true; 62672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.csp = true; 62772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 62872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.lst = last_one; 62972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 63072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (usb_endpoint_type(dep->desc)) { 63272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_CONTROL: 63372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.trbctl = DWC3_TRBCTL_CONTROL_SETUP; 63472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 63572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_ISOC: 6375a18999ebd880f6fc4264aa5687daad4c4013bceSebastian Andrzej Siewior trb.trbctl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; 63872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* IOC every DWC3_TRB_NUM / 4 so we can refill */ 64072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(cur_slot % (DWC3_TRB_NUM / 4))) 64172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.ioc = last_one; 64272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 64372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 64472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_BULK: 64572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_INT: 64672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.trbctl = DWC3_TRBCTL_NORMAL; 64772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 64872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 64972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 65072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * This is only possible with faulty memory because we 65172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * checked it already :) 65272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 65372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi BUG(); 65472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 65572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 65672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.length = req->request.length; 65772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb.hwo = true; 65872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 65972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_trb_to_hw(&trb, trb_hw); 66072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->trb_dma = dwc3_trb_dma_offset(dep, trb_hw); 66172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 66272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (last_one) 66372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 66472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 66572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 66672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 66772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 66872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 66972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, 67072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_new) 67172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 67272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 67372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 67472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 67572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 67672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 67772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 67872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new && (dep->flags & DWC3_EP_BUSY)) { 67972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: endpoint busy\n", dep->name); 68072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EBUSY; 68172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 68272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_PENDING_REQUEST; 68372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 68472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 68572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * If we are getting here after a short-out-packet we don't enqueue any 68672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * new requests as we try to set the IOC bit only on the last request. 68772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 68872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new) { 68972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->req_queued)) 69072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_prepare_trbs(dep, start_new); 69172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 69272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* req points to the first request which will be sent */ 69372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->req_queued); 69472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 69572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 69672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * req points to the first request where HWO changed 69772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * from 0 to 1 69872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 69972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = dwc3_prepare_trbs(dep, start_new); 70072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 70172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) { 70272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_PENDING_REQUEST; 70372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 70472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 70572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 70672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 70772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param0.depstrtxfer.transfer_desc_addr_high = 70872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi upper_32_bits(req->trb_dma); 70972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi params.param1.depstrtxfer.transfer_desc_addr_low = 71072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi lower_32_bits(req->trb_dma); 71172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 71272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new) 71372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_STARTTRANSFER; 71472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 71572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_UPDATETRANSFER; 71672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 71772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(cmd_param); 71872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); 71972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret < 0) { 72072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n"); 72172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 72272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 72372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * FIXME we need to iterate over the list of requests 72472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * here and stop, unmap, free and del each of the linked 72572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * requests instead of we do now. 72672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 72772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_unmap_buffer_from_dma(req); 72872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&req->list); 72972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 73072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 73172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 73272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_BUSY; 73372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc, 73472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number); 73572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep->res_trans_idx) 73672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi printk_once(KERN_ERR "%s() res_trans_idx is invalid\n", __func__); 73772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 73872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 73972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 74072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) 74172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 74272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.actual = 0; 74372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.status = -EINPROGRESS; 74472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->direction = dep->direction; 74572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->epnum = dep->number; 74672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 74772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 74872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We only add to our list of requests now and 74972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * start consuming the list once we get XferNotReady 75072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IRQ. 75172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 75272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * That way, we avoid doing anything that we don't need 75372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * to do now and defer it until the point we receive a 75472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * particular token from the Host side. 75572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 75672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * This will also avoid Host cancelling URBs due to too 75772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * many NACKs. 75872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 75972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_map_buffer_to_dma(req); 76072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_add_tail(&req->list, &dep->request_list); 76172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 76272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 76372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * There is one special case: XferNotReady with 76472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * empty list of requests. We need to kick the 76572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfer here in that situation, otherwise 76672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * we will be NAKing forever. 76772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 76872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * If we get XferNotReady before gadget driver 76972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * has a chance to queue a request, we will ACK 77072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * the IRQ but won't be able to receive the data 77172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * until the next request is queued. The following 77272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * code is handling exactly that. 77372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 77472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->flags & DWC3_EP_PENDING_REQUEST) { 77572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 77672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_trans; 77772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 77872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi start_trans = 1; 77972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && 78072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags & DWC3_EP_BUSY) 78172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi start_trans = 0; 78272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 78372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_kick_transfer(dep, 0, start_trans); 78472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret && ret != -EBUSY) { 78572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 78672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 78772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s: failed to kick transfers\n", 78872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 78972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 79072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi }; 79172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 79272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 79372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 79472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 79572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, 79672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi gfp_t gfp_flags) 79772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 79872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 79972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 80072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 80172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 80272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 80372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 80472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 80572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 80672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep->desc) { 80772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n", 80872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name); 80972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ESHUTDOWN; 81072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 81172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 81272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "queing request %p to %s length %d\n", 81372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name, request->length); 81472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 81572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 81672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_queue(dep, req); 81772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 81872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 81972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 82072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 82172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 82272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_dequeue(struct usb_ep *ep, 82372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_request *request) 82472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 82572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 82672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *r = NULL; 82772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 82872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 82972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 83072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 83272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 83372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 83572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry(r, &dep->request_list, list) { 83772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) 83872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 83972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 84072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 84172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r != req) { 84272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry(r, &dep->req_queued, list) { 84372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) 84472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 84572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 84672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) { 84772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* wait until it is processed */ 84872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfer(dwc, dep->number); 84972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out0; 85072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 85172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "request %p was not queued to %s\n", 85272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name); 85372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 85472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out0; 85572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 85672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 85772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* giveback the request */ 85872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_giveback(dep, req, -ECONNRESET); 85972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 86072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout0: 86172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 86272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 86372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 86472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 86572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 86672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value) 86772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 86872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 86972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 87072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 87172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 87272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 87372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 87472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (value) { 87572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number == 0 || dep->number == 1) 87672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0state = EP0_STALL; 87772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 87872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 87972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETSTALL, ¶ms); 88072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 88172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to %s STALL on %s\n", 88272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi value ? "set" : "clear", 88372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 88472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 88572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_STALL; 88672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 88772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 88872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_CLEARSTALL, ¶ms); 88972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 89072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to %s STALL on %s\n", 89172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi value ? "set" : "clear", 89272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 89372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 89472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_STALL; 89572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 89672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 89772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 89872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 89972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_set_halt(struct usb_ep *ep, int value) 90072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 90172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 90272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 90372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 90572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 90772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 90972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 91172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name); 91272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 91372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 91472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 91572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_set_halt(dep, value); 91772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout: 91872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 91972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 92072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 92172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 92272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 92372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_set_wedge(struct usb_ep *ep) 92472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 92572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 92672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 92772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_WEDGE; 92872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 92972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return usb_ep_set_halt(ep); 93072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 93172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 93372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct usb_endpoint_descriptor dwc3_gadget_ep0_desc = { 93572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bLength = USB_DT_ENDPOINT_SIZE, 93672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bDescriptorType = USB_DT_ENDPOINT, 93772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bmAttributes = USB_ENDPOINT_XFER_CONTROL, 93872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 93972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 94072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_ep_ops dwc3_gadget_ep0_ops = { 94172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .enable = dwc3_gadget_ep0_enable, 94272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .disable = dwc3_gadget_ep0_disable, 94372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .alloc_request = dwc3_gadget_ep_alloc_request, 94472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .free_request = dwc3_gadget_ep_free_request, 94572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .queue = dwc3_gadget_ep0_queue, 94672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .dequeue = dwc3_gadget_ep_dequeue, 94772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_halt = dwc3_gadget_ep_set_halt, 94872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_wedge = dwc3_gadget_ep_set_wedge, 94972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 95072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 95172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_ep_ops dwc3_gadget_ep_ops = { 95272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .enable = dwc3_gadget_ep_enable, 95372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .disable = dwc3_gadget_ep_disable, 95472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .alloc_request = dwc3_gadget_ep_alloc_request, 95572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .free_request = dwc3_gadget_ep_free_request, 95672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .queue = dwc3_gadget_ep_queue, 95772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .dequeue = dwc3_gadget_ep_dequeue, 95872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_halt = dwc3_gadget_ep_set_halt, 95972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_wedge = dwc3_gadget_ep_set_wedge, 96072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 96172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 96272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 96372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 96472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_get_frame(struct usb_gadget *g) 96572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 96672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 96772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 96872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 96972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 97072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return DWC3_DSTS_SOFFN(reg); 97172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 97272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 97372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_wakeup(struct usb_gadget *g) 97472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 97572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 97672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 97772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long timeout; 97872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 97972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 98072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 98172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 98272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 98372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 98472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 link_state; 98572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 speed; 98672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 98772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 98872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 98972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 99072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * According to the Databook Remote wakeup request should 99172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * be issued only when the device is in early suspend state. 99272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 99372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We can check that via USB Link State bits in DSTS register. 99472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 99572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 99672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 99772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi speed = reg & DWC3_DSTS_CONNECTSPD; 99872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (speed == DWC3_DSTS_SUPERSPEED) { 99972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "no wakeup on SuperSpeed\n"); 100072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 100172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 100272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 100372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 100472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi link_state = DWC3_DSTS_USBLNKST(reg); 100572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 100672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (link_state) { 100772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_LINK_STATE_RX_DET: /* in HS, means Early Suspend */ 100872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_LINK_STATE_U3: /* in HS, means SUSPEND */ 100972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 101072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 101172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "can't wakeup from link state %d\n", 101272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi link_state); 101372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 101472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 101572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 101672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 101772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 101872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 101972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 102072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Switch link state to Recovery. In HS/FS/LS this means 102172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * RemoteWakeup Request 102272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 102372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DCTL_ULSTCHNG_RECOVERY; 102472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 102572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 102672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* wait for at least 2000us */ 102772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usleep_range(2000, 2500); 102872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 102972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* write zeroes to Link Change Request */ 103072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; 103172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 103272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* pool until Link State change to ON */ 103472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout = jiffies + msecs_to_jiffies(100); 103572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (!(time_after(jiffies, timeout))) { 103772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 103872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* in HS, means ON */ 104072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) == DWC3_LINK_STATE_U0) 104172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 104272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 104372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) != DWC3_LINK_STATE_U0) { 104572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to send remote wakeup\n"); 104672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 104772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 104872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout: 105072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 105172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 105272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 105372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 105472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 105572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_selfpowered(struct usb_gadget *g, 105672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int is_selfpowered) 105772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 105872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 105972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->is_selfpowered = !!is_selfpowered; 106172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 106372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 106472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) 106672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 106772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 106861d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior u32 timeout = 500; 106972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 107172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (is_on) 107272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DCTL_RUN_STOP; 107372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 107472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_RUN_STOP; 107572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 107772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 107972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 108072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (is_on) { 108172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(reg & DWC3_DSTS_DEVCTRLHLT)) 108272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 108372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 108472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (reg & DWC3_DSTS_DEVCTRLHLT) 108572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 108672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 108772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout--; 108872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!timeout) 108972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 109061d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior udelay(1); 109172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 109272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 109372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "gadget %s data soft-%s\n", 109472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver 109572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? dwc->gadget_driver->function : "no-function", 109672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi is_on ? "connect" : "disconnect"); 109772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 109872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 109972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) 110072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 110172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 110272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 110372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 110472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi is_on = !!is_on; 110572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 110672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 110772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_run_stop(dwc, is_on); 110872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 110972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 111072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 111172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 111272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 111372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_start(struct usb_gadget *g, 111472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_gadget_driver *driver) 111572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 111672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 111772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 111872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 111972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 112072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 112172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 112272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 112372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 112472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget_driver) { 112572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s is already bound to %s\n", 112672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.name, 112772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->driver.name); 112872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EBUSY; 112972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 113072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 113172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 113272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver = driver; 113372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.driver = &driver->driver; 113472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 113572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 113672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 113772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 113872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT: power down scale might be different 113972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * depending on PHY used, need to pass that via platform_data 114072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 114172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GCTL_PWRDNSCALE(0x61a) 114272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi | DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_DEVICE); 114372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GCTL_DISSCRAMBLE; 114472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 114572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 114672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * WORKAROUND: DWC3 revisions <1.90a have a bug 114772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * when The device fails to connect at SuperSpeed 114872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * and falls back to high-speed mode which causes 114972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * the device to enter in a Connect/Disconnect loop 115072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 115172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->revision < DWC3_REVISION_190A) 115272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GCTL_U2RSTECN; 115372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 115472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 115572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 115672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCFG); 115772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~(DWC3_DCFG_SPEED_MASK); 115872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DCFG_SUPERSPEED; 115972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCFG, reg); 116072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Start with SuperSpeed Default */ 116272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); 116372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[0]; 116572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc); 116672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 116772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 116872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 116972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 117072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[1]; 117272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc); 117372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 117472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 117572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err1; 117672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 117772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* begin to receive SETUP packets */ 1179c7fcdeb2627c46b7ec3f0bcb2054b10405f9a70eFelipe Balbi dwc->ep0state = EP0_SETUP_PHASE; 118072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep0_out_start(dwc); 118172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 118272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 118372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 118472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 118572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 118672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr1: 118772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[0]); 118872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 118972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr0: 119072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 119172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 119272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 119372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 119472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 119572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_stop(struct usb_gadget *g, 119672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_gadget_driver *driver) 119772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 119872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 119972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 120072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 120272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[0]); 120472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[1]); 120572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver = NULL; 120772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.driver = NULL; 120872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 121072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 121172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 121272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 121372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_gadget_ops dwc3_gadget_ops = { 121472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .get_frame = dwc3_gadget_get_frame, 121572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .wakeup = dwc3_gadget_wakeup, 121672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_selfpowered = dwc3_gadget_set_selfpowered, 121772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .pullup = dwc3_gadget_pullup, 121872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .udc_start = dwc3_gadget_start, 121972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .udc_stop = dwc3_gadget_stop, 122072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 122172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 122372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __devinit dwc3_gadget_init_endpoints(struct dwc3 *dwc) 122572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 122672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 122772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum; 122872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dwc->gadget.ep_list); 123072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 123172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 123272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = kzalloc(sizeof(*dep), GFP_KERNEL); 123372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep) { 123472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "can't allocate endpoint %d\n", 123572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi epnum); 123672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ENOMEM; 123772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 123872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 123972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->dwc = dwc; 124072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number = epnum; 124172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->eps[epnum] = dep; 124272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1, 124472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi (epnum & 1) ? "in" : "out"); 124572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.name = dep->name; 124672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->direction = (epnum & 1); 124772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum == 0 || epnum == 1) { 124972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.maxpacket = 512; 125072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.ops = &dwc3_gadget_ep0_ops; 125172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!epnum) 125272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0 = &dep->endpoint; 125372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 125472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 125572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 125672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.maxpacket = 1024; 125772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.ops = &dwc3_gadget_ep_ops; 125872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_add_tail(&dep->endpoint.ep_list, 125972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->gadget.ep_list); 126072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 126172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_alloc_trb_pool(dep); 126272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 126372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s: failed to allocate TRB pool\n", dep->name); 126472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 126572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 126672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 126772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dep->request_list); 126872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dep->req_queued); 126972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 127072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 127272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 127372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_free_endpoints(struct dwc3 *dwc) 127572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 127672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 127772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum; 127872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 128072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 128172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_free_trb_pool(dep); 128272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 128372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum != 0 && epnum != 1) 128472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&dep->endpoint.ep_list); 128572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 128672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi kfree(dep); 128772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 128872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 128972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_release(struct device *dev) 129172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 129272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dev, "%s\n", __func__); 129372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 129472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 129672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, 129772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event, int status) 129872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 129972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 130072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb trb; 130172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int count; 130272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int s_pkt = 0; 130372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 130472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 130572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->req_queued); 130672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) 130772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 130872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 130972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_trb_to_nat(req->trb, &trb); 131072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 13110d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior if (trb.hwo && status != -ESHUTDOWN) 13120d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior /* 13130d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * We continue despite the error. There is not much we 13140d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * can do. If we don't clean in up we loop for ever. If 13150d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * we skip the TRB than it gets overwritten reused after 13160d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * a while since we use them in a ring buffer. a BUG() 13170d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * would help. Lets hope that if this occures, someone 13180d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * fixes the root cause instead of looking away :) 13190d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior */ 132072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n", 132172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, req->trb); 132272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count = trb.length; 132372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 132472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->direction) { 132572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (count) { 132672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "incomplete IN transfer %s\n", 132772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 132872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = -ECONNRESET; 132972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 133072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 133172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (count && (event->status & DEPEVT_STATUS_SHORT)) 133272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi s_pkt = 1; 133372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 133472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 133572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 133672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We assume here we will always receive the entire data block 133772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * which we should receive. Meaning, if we program RX to 133872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * receive 4K but we receive only 2K, we assume that's all we 133972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * should receive and we simply bounce the request back to the 134072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * gadget driver for further processing. 134172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 134272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.actual += req->request.length - count; 134372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_giveback(dep, req, status); 134472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (s_pkt) 134572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 134672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((event->status & DEPEVT_STATUS_LST) && trb.lst) 134772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 134872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc) 134972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 135072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 135172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 135272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc) 135372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 135472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 1; 135572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 135672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 135772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, 135872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep, const struct dwc3_event_depevt *event, 135972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_new) 136072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 136172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned status = 0; 136272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int clean_busy; 136372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->status & DEPEVT_STATUS_BUSERR) 136572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = -ECONNRESET; 136672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status); 1368a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior if (clean_busy) { 136972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_BUSY; 1370a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior dep->res_trans_idx = 0; 1371a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior } 137272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 137372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 137472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_start_isoc(struct dwc3 *dwc, 137572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep, const struct dwc3_event_depevt *event) 137672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 137772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 uf; 137872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 137972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->request_list)) { 138072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", 138172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 138272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 138372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 138472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 138572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->parameters) { 138672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 mask; 138772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 138872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi mask = ~(dep->interval - 1); 138972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi uf = event->parameters & mask; 139072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 4 micro frames in the future */ 139172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi uf += dep->interval * 4; 139272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 139372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi uf = 0; 139472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 139572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 139672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_kick_transfer(dep, uf, 1); 139772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 139872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 139972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep, 140072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 140172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 140272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 140372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_event_depevt mod_ev = *event; 140472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 140572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 140672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We were asked to remove one requests. It is possible that this 140772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * request and a few other were started together and have the same 140872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfer index. Since we stopped the complete endpoint we don't 140972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * know how many requests were already completed (and not yet) 141072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * reported and how could be done (later). We purge them all until 141172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * the end of the list. 141272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 141372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi mod_ev.status = DEPEVT_STATUS_LST; 141472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN); 141572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_BUSY; 141672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* pending requets are ignored and are queued on XferNotReady */ 141772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 141872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 141972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_ep_cmd_compl(struct dwc3_ep *dep, 142072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 142172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 142272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 param = event->parameters; 142372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd_type = (param >> 8) & ((1 << 5) - 1); 142472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 142572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (cmd_type) { 142672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_ENDTRANSFER: 142772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_process_ep_cmd_complete(dep, event); 142872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 142972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_STARTTRANSFER: 143072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->res_trans_idx = param & 0x7f; 143172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 143272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 143372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi printk(KERN_ERR "%s() unknown /unexpected type: %d\n", 143472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __func__, cmd_type); 143572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 143672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi }; 143772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 143872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 143972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_endpoint_interrupt(struct dwc3 *dwc, 144072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 144172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 144272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 144372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum = event->endpoint_number; 144472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 144672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: %s\n", dep->name, 144872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep_event_string(event->endpoint_event)); 144972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum == 0 || epnum == 1) { 145172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep0_interrupt(dwc, event); 145272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 145372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 145472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->endpoint_event) { 145672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERCOMPLETE: 145772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 145872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n", 145972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 146072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 146172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 146272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 146372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_endpoint_transfer_complete(dwc, dep, event, 1); 146472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 146572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERINPROGRESS: 146672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb_endpoint_xfer_isoc(dep->desc)) { 146772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n", 146872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 146972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 147072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 147172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 147272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_endpoint_transfer_complete(dwc, dep, event, 0); 147372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 147472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERNOTREADY: 147572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 147672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_start_isoc(dwc, dep, event); 147772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 147872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 147972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: reason %s\n", 148172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, event->status 148272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? "Transfer Active" 148372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi : "Transfer Not Active"); 148472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_kick_transfer(dep, 0, 1); 148672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ret || ret == -EBUSY) 148772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 148872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s: failed to kick transfers\n", 149072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 149172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 149272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 149372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 149472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_RXTXFIFOEVT: 149572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name); 149672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 149772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_STREAMEVT: 149872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s Stream Event\n", dep->name); 149972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 150072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_EPCMDCMPLT: 150172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep_cmd_compl(dep, event); 150272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 150372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 150472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 150572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 150672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_disconnect_gadget(struct dwc3 *dwc) 150772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 150872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget_driver && dwc->gadget_driver->disconnect) { 150972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 151072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->disconnect(&dwc->gadget); 151172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 151272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 151372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 151472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 151572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum) 151672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 151772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 151872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 151972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 152072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 152172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 152272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 152372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1524624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior WARN_ON(!dep->res_trans_idx); 152572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->res_trans_idx) { 152672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_ENDTRANSFER; 152772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC; 152872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(dep->res_trans_idx); 152972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 153072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); 153172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi WARN_ON_ONCE(ret); 1532a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior dep->res_trans_idx = 0; 153372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 153472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 153572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 153672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_stop_active_transfers(struct dwc3 *dwc) 153772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 153872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 epnum; 153972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 154072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 2; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 154172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 154272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 154372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 154472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) 154572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 154672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1547624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_remove_requests(dwc, dep); 154872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 154972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 155072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 155172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_clear_stall_all_ep(struct dwc3 *dwc) 155272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 155372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 epnum; 155472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 155572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 1; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 155672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 155772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 155872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 155972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 156172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_STALL)) 156372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 156472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_STALL; 156672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 156872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 156972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_CLEARSTALL, ¶ms); 157072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi WARN_ON_ONCE(ret); 157172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 157272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 157372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 157472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) 157572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 157672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 157772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#if 0 157872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi XXX 157972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi U1/U2 is powersave optimization. Skip it for now. Anyway we need to 158072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi enable it before we can disable it. 158172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 158272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 158372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_INITU1ENA; 158472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 158572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 158672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_INITU2ENA; 158772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 158872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#endif 158972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 159072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfers(dwc); 159172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_disconnect_gadget(dwc); 159272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 159372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_UNKNOWN; 159472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 159572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 159672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_usb3_phy_power(struct dwc3 *dwc, int on) 159772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 159872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 159972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 160072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 160172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 160272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (on) 160372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; 160472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 160572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GUSB3PIPECTL_SUSPHY; 160672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 160772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 160872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 160972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 161072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_usb2_phy_power(struct dwc3 *dwc, int on) 161172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 161272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 161372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 161472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 161572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 161672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (on) 161772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; 161872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 161972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GUSB2PHYCFG_SUSPHY; 162072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 162172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 162272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 162372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 162472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) 162572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 162672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 162772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 162872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 162972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 163072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Enable PHYs */ 163172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb2_phy_power(dwc, true); 163272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb3_phy_power(dwc, true); 163372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 163472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget.speed != USB_SPEED_UNKNOWN) 163572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_disconnect_gadget(dwc); 163672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 163772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 163872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_TSTCTRL_MASK; 163972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 164072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 164172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfers(dwc); 164272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_clear_stall_all_ep(dwc); 164372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 164472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Reset device address to zero */ 164572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCFG); 164672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~(DWC3_DCFG_DEVADDR_MASK); 164772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCFG, reg); 164872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 164972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 165072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Wait for RxFifo to drain 165172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 165272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT probably shouldn't wait forever. 165372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In case Hardware ends up in a screwed up 165472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * case, we error out, notify the user and, 165572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * maybe, WARN() or BUG() but leave the rest 165672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * of the kernel working fine. 165772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 165872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT the below is rather CPU intensive, 165972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * maybe we should read and if it doesn't work 166072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * sleep (not busy wait) for a few useconds. 166172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 166272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT why wait until the RXFIFO is empty anyway? 166372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 166472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (!(dwc3_readl(dwc->regs, DWC3_DSTS) 166572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi & DWC3_DSTS_RXFIFOEMPTY)) 166672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cpu_relax(); 166772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 166872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 166972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_update_ram_clk_sel(struct dwc3 *dwc, u32 speed) 167072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 167172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 167272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 usb30_clock = DWC3_GCTL_CLK_BUS; 167372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 167472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 167572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We change the clock only at SS but I dunno why I would want to do 167672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * this. Maybe it becomes part of the power saving plan. 167772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 167872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 167972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (speed != DWC3_DSTS_SUPERSPEED) 168072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 168172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 168272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 168372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * RAMClkSel is reset to 0 after USB reset, so it must be reprogrammed 168472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * each time on Connect Done. 168572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 168672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb30_clock) 168772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 168872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 168972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 169072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GCTL_RAMCLKSEL(usb30_clock); 169172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 169272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 169372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 169472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_disable_phy(struct dwc3 *dwc, u8 speed) 169572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 169672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (speed) { 169772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_SUPER: 169872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb2_phy_power(dwc, false); 169972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 170072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_HIGH: 170172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_FULL: 170272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_LOW: 170372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb3_phy_power(dwc, false); 170472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 170572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 170672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 170772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 170872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) 170972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 171072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 171172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 171272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 171372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 171472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 speed; 171572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 171672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 171772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 171872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 171972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 172172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi speed = reg & DWC3_DSTS_CONNECTSPD; 172272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->speed = speed; 172372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_update_ram_clk_sel(dwc, speed); 172572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (speed) { 172772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_SUPERSPEED: 172872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); 172972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 512; 173072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_SUPER; 173172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 173272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_HIGHSPEED: 173372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); 173472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 64; 173572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_HIGH; 173672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 173772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_FULLSPEED2: 173872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_FULLSPEED1: 173972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); 174072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 64; 174172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_FULL; 174272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 174372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_LOWSPEED: 174472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(8); 174572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 8; 174672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_LOW; 174772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 174872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 174972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 175072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Disable unneded PHY */ 175172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_disable_phy(dwc, dwc->gadget.speed); 175272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 175372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[0]; 175472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc); 175572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 175672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 175772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 175872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 175972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 176072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[1]; 176172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc); 176272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 176372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 176472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 176572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 176672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 176772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 176872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Configure PHY via GUSB3PIPECTLn if required. 176972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 177072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Update GTXFIFOSIZn 177172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 177272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In both cases reset values should be sufficient. 177372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 177472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 177572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 177672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc) 177772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 177872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 177972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 178072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 178172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * TODO take core out of low power mode when that's 178272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * implemented. 178372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 178472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 178572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->resume(&dwc->gadget); 178672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 178772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 178872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, 178972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int evtinfo) 179072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 179172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 179272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 179372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* The fith bit says SuperSpeed yes or no. */ 179472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->link_state = evtinfo & DWC3_LINK_STATE_MASK; 179572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 179672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 179772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_interrupt(struct dwc3 *dwc, 179872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_devt *event) 179972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 180072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->type) { 180172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_DISCONNECT: 180272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_disconnect_interrupt(dwc); 180372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 180472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_RESET: 180572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_reset_interrupt(dwc); 180672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 180772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_CONNECT_DONE: 180872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_conndone_interrupt(dwc); 180972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 181072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_WAKEUP: 181172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_wakeup_interrupt(dwc); 181272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 181372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: 181472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_linksts_change_interrupt(dwc, event->event_info); 181572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 181672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_EOPF: 181772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "End of Periodic Frame\n"); 181872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 181972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_SOF: 182072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Start of Periodic Frame\n"); 182172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 182272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_ERRATIC_ERROR: 182372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Erratic Error\n"); 182472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 182572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_CMD_CMPL: 182672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Command Complete\n"); 182772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 182872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_OVERFLOW: 182972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Overflow\n"); 183072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 183172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 183272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "UNKNOWN IRQ %d\n", event->type); 183372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 183472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 183572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 183672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_process_event_entry(struct dwc3 *dwc, 183772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const union dwc3_event *event) 183872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 183972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Endpoint IRQ, handle it and return early */ 184072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->type.is_devspec == 0) { 184172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* depevt */ 184272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_endpoint_interrupt(dwc, &event->depevt); 184372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 184472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 184572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->type.type) { 184672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_EVENT_TYPE_DEV: 184772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_interrupt(dwc, &event->devt); 184872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 184972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* REVISIT what to do with Carkit and I2C events ? */ 185072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 185172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw); 185272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 185372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 185472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 185572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf) 185672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 185772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_event_buffer *evt; 185872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int left; 185972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 count; 186072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(buf)); 186272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count &= DWC3_GEVNTCOUNT_MASK; 186372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!count) 186472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return IRQ_NONE; 186572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi evt = dwc->ev_buffs[buf]; 186772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi left = count; 186872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (left > 0) { 187072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi union dwc3_event event; 187172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 187272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memcpy(&event.raw, (evt->buf + evt->lpos), sizeof(event.raw)); 187372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_process_event_entry(dwc, &event); 187472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 187572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * XXX we wrap around correctly to the next entry as almost all 187672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * entries are 4 bytes in size. There is one entry which has 12 187772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * bytes which is a regular entry followed by 8 bytes data. ATM 187872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * I don't know how things are organized if were get next to the 187972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * a boundary so I worry about that once we try to handle that. 188072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 188172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE; 188272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi left -= 4; 188372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 188472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(buf), 4); 188572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 188672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 188772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return IRQ_HANDLED; 188872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 188972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 189072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic irqreturn_t dwc3_interrupt(int irq, void *_dwc) 189172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 189272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = _dwc; 189372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int i; 189472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irqreturn_t ret = IRQ_NONE; 189572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 189672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 189772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 189872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (i = 0; i < DWC3_EVENT_BUFFERS_NUM; i++) { 189972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irqreturn_t status; 190072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 190172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = dwc3_process_event_buf(dwc, i); 190272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (status == IRQ_HANDLED) 190372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = status; 190472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 190572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 190672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 190772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 190872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 190972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 191072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 191172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 191272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * dwc3_gadget_init - Initializes gadget related registers 191372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dwc: Pointer to out controller context structure 191472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 191572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Returns 0 on success otherwise negative errno. 191672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 191772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint __devinit dwc3_gadget_init(struct dwc3 *dwc) 191872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 191972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 192072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 192172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int irq; 192272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 192372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 192472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->ctrl_req_addr, GFP_KERNEL); 192572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->ctrl_req) { 192672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate ctrl request\n"); 192772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 192872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 192972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 193072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 193172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 193272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->ep0_trb_addr, GFP_KERNEL); 193372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->ep0_trb) { 193472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate ep0 trb\n"); 193572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 193672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err1; 193772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 193872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 193972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->setup_buf = dma_alloc_coherent(dwc->dev, 194072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi sizeof(*dwc->setup_buf) * 2, 194172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->setup_buf_addr, GFP_KERNEL); 194272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->setup_buf) { 194372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate setup buffer\n"); 194472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 194572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err2; 194672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 194772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 19485812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce = dma_alloc_coherent(dwc->dev, 19495812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 512, &dwc->ep0_bounce_addr, GFP_KERNEL); 19505812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi if (!dwc->ep0_bounce) { 19515812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dev_err(dwc->dev, "failed to allocate ep0 bounce buffer\n"); 19525812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi ret = -ENOMEM; 19535812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err3; 19545812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi } 19555812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 195672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_set_name(&dwc->gadget.dev, "gadget"); 195772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 195872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ops = &dwc3_gadget_ops; 195972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.is_dualspeed = true; 196072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_UNKNOWN; 196172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.parent = dwc->dev; 196272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 196372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_set_coherent_mask(&dwc->gadget.dev, dwc->dev->coherent_dma_mask); 196472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 196572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.dma_parms = dwc->dev->dma_parms; 196672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.dma_mask = dwc->dev->dma_mask; 196772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.release = dwc3_gadget_release; 196872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.name = "dwc3-gadget"; 196972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 197072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 197172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT: Here we should clear all pending IRQs to be 197272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * sure we're starting from a well known location. 197372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 197472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 197572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_init_endpoints(dwc); 197672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 19775812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err4; 197872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 197972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq = platform_get_irq(to_platform_device(dwc->dev), 0); 198072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 198172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = request_irq(irq, dwc3_interrupt, IRQF_SHARED, 198272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi "dwc3", dwc); 198372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 198472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to request irq #%d --> %d\n", 198572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq, ret); 19865812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err5; 198772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 198872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 198972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Enable all but Start and End of Frame IRQs */ 199072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN | 199172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_EVNTOVERFLOWEN | 199272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_CMDCMPLTEN | 199372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_ERRTICERREN | 199472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_WKUPEVTEN | 199572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_ULSTCNGEN | 199672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_CONNECTDONEEN | 199772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_USBRSTEN | 199872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_DISCONNEVTEN); 199972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); 200072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 200172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = device_register(&dwc->gadget.dev); 200272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 200372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to register gadget device\n"); 200472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi put_device(&dwc->gadget.dev); 20055812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err6; 200672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 200772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 200872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget); 200972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 201072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to register udc\n"); 20115812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err7; 201272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 201372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 201472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 201572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20165812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr7: 201772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi device_unregister(&dwc->gadget.dev); 201872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20195812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr6: 202072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); 202172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi free_irq(irq, dwc); 202272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20235812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr5: 202472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_free_endpoints(dwc); 202572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20265812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr4: 20275812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce, 20285812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce_addr); 20295812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 203072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr3: 203172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2, 203272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->setup_buf, dwc->setup_buf_addr); 203372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 203472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr2: 203572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 203672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb, dwc->ep0_trb_addr); 203772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 203872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr1: 203972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 204072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req, dwc->ctrl_req_addr); 204172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 204272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr0: 204372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 204472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 204572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 204672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_gadget_exit(struct dwc3 *dwc) 204772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 204872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int irq; 204972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int i; 205072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 205172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usb_del_gadget_udc(&dwc->gadget); 205272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq = platform_get_irq(to_platform_device(dwc->dev), 0); 205372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 205472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); 205572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi free_irq(irq, dwc); 205672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 205772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (i = 0; i < ARRAY_SIZE(dwc->eps); i++) 205872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[i]); 205972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 206072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_free_endpoints(dwc); 206172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20625812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce, 20635812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce_addr); 20645812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 206572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2, 206672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->setup_buf, dwc->setup_buf_addr); 206772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 206872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 206972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb, dwc->ep0_trb_addr); 207072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 207172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 207272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req, dwc->ctrl_req_addr); 207372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 207472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi device_unregister(&dwc->gadget.dev); 207572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 2076