gadget.c revision f9c56cdd3905c96c600456203637bd7ec8ec6383
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 * 672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Authors: Felipe Balbi <balbi@ti.com>, 772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Sebastian Andrzej Siewior <bigeasy@linutronix.de> 872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Redistribution and use in source and binary forms, with or without 1072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * modification, are permitted provided that the following conditions 1172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * are met: 1272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 1. Redistributions of source code must retain the above copyright 1372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * notice, this list of conditions, and the following disclaimer, 1472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * without modification. 1572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 2. Redistributions in binary form must reproduce the above copyright 1672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * notice, this list of conditions and the following disclaimer in the 1772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * documentation and/or other materials provided with the distribution. 1872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 3. The names of the above-listed copyright holders may not be used 1972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * to endorse or promote products derived from this software without 2072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * specific prior written permission. 2172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 2272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * ALTERNATIVELY, this software may be distributed under the terms of the 2372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * GNU General Public License ("GPL") version 2, as published by the Free 2472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Software Foundation. 2572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 2672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 2772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 2872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 3072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 3172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 3272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 3372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 3472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 3572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 3672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 3872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 3972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/kernel.h> 4072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/delay.h> 4172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/slab.h> 4272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/spinlock.h> 4372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/platform_device.h> 4472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/pm_runtime.h> 4572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/interrupt.h> 4672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/io.h> 4772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/list.h> 4872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/dma-mapping.h> 4972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/usb/ch9.h> 5172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include <linux/usb/gadget.h> 5272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include "core.h" 5472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include "gadget.h" 5572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#include "io.h" 5672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#define DMA_ADDR_INVALID (~(dma_addr_t)0) 5872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_map_buffer_to_dma(struct dwc3_request *req) 6072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 6172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = req->dep->dwc; 6272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 6378c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior if (req->request.length == 0) { 6478c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior /* req->request.dma = dwc->setup_buf_addr; */ 6578c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior return; 6678c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior } 6778c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior 68eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (req->request.num_sgs) { 69eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi int mapped; 70eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 71eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi mapped = dma_map_sg(dwc->dev, req->request.sg, 72eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->request.num_sgs, 73eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->direction ? DMA_TO_DEVICE 74eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi : DMA_FROM_DEVICE); 75eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (mapped < 0) { 76eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dev_err(dwc->dev, "failed to map SGs\n"); 77eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi return; 78eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 79eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 80eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->request.num_mapped_sgs = mapped; 81eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi return; 82eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 83eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 8472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->request.dma == DMA_ADDR_INVALID) { 8572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.dma = dma_map_single(dwc->dev, req->request.buf, 8672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, req->direction 8772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 8872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->mapped = true; 8972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 9072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 9172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 9272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_unmap_buffer_from_dma(struct dwc3_request *req) 9372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 9472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = req->dep->dwc; 9572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 9678c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior if (req->request.length == 0) { 9778c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior req->request.dma = DMA_ADDR_INVALID; 9878c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior return; 9978c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior } 10078c58a53c9864447f2a46d4c06dd3c2616823ad2Sebastian Andrzej Siewior 101eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (req->request.num_mapped_sgs) { 102eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->request.dma = DMA_ADDR_INVALID; 103eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma_unmap_sg(dwc->dev, req->request.sg, 104eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->request.num_sgs, 105eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->direction ? DMA_TO_DEVICE 106eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi : DMA_FROM_DEVICE); 107eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 108eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->request.num_mapped_sgs = 0; 109eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi return; 110eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 111eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 11272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->mapped) { 11372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_unmap_single(dwc->dev, req->request.dma, 11472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, req->direction 11572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? DMA_TO_DEVICE : DMA_FROM_DEVICE); 11672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->mapped = 0; 117f198ead21bcb7b03d7bb2cba7ba0f5ad615a3862Felipe Balbi req->request.dma = DMA_ADDR_INVALID; 11872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 11972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 12072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, 12272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int status) 12372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 12472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 12572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->queued) { 127eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (req->request.num_mapped_sgs) 128eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dep->busy_slot += req->request.num_mapped_sgs; 129eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi else 130eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dep->busy_slot++; 131eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 13272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 13372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Skip LINK TRB. We can't use req->trb and check for 13472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * DWC3_TRBCTL_LINK_TRB because it points the TRB we just 13572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * completed (not the LINK TRB). 13672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 13772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (((dep->busy_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && 13872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usb_endpoint_xfer_isoc(dep->desc)) 13972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot++; 14072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 14172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&req->list); 142eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->trb = NULL; 14372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 14472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->request.status == -EINPROGRESS) 14572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.status = status; 14672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 14772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_unmap_buffer_from_dma(req); 14872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 14972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n", 15072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req, dep->name, req->request.actual, 15172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, status); 15272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 15372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 15472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.complete(&req->dep->endpoint, &req->request); 15572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 15672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 15772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 15872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const char *dwc3_gadget_ep_cmd_string(u8 cmd) 15972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 16072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (cmd) { 16172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_DEPSTARTCFG: 16272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Start New Configuration"; 16372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_ENDTRANSFER: 16472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "End Transfer"; 16572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_UPDATETRANSFER: 16672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Update Transfer"; 16772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_STARTTRANSFER: 16872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Start Transfer"; 16972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_CLEARSTALL: 17072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Clear Stall"; 17172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETSTALL: 17272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Stall"; 17372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_GETSEQNUMBER: 17472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Get Data Sequence Number"; 17572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETTRANSFRESOURCE: 17672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Endpoint Transfer Resource"; 17772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETEPCONFIG: 17872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Endpoint Configuration"; 17972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 18072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "UNKNOWN command"; 18172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 18272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 18372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 18472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, 18572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned cmd, struct dwc3_gadget_ep_cmd_params *params) 18672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 18772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = dwc->eps[ep]; 18861d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior u32 timeout = 500; 18972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 19072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 19172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: cmd '%s' params %08x %08x %08x\n", 19272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, 193dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_gadget_ep_cmd_string(cmd), params->param0, 194dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params->param1, params->param2); 19572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 196dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0); 197dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1); 198dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR2(ep), params->param2); 19972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMD(ep), cmd | DWC3_DEPCMD_CMDACT); 20172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 20272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DEPCMD(ep)); 20372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(reg & DWC3_DEPCMD_CMDACT)) { 204164f6e141ed214bda30fb219d41ec3254bd90886Felipe Balbi dev_vdbg(dwc->dev, "Command Complete --> %d\n", 205164f6e141ed214bda30fb219d41ec3254bd90886Felipe Balbi DWC3_DEPCMD_STATUS(reg)); 20672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 20772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 20872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 20972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 21072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We can't sleep here, because it is also called from 21172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * interrupt context. 21272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 21372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout--; 21472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!timeout) 21572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ETIMEDOUT; 21672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 21761d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior udelay(1); 21872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 21972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 22072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep, 22272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb) 22372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 224c439ef87c33a1df30f528cb152151465c2529cacPaul Zimmerman u32 offset = (char *) trb - (char *) dep->trb_pool; 22572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dep->trb_pool_dma + offset; 22772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 22872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_alloc_trb_pool(struct dwc3_ep *dep) 23072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 23172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 23272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->trb_pool) 23472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 23572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number == 0 || dep->number == 1) 23772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 23872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool = dma_alloc_coherent(dwc->dev, 24072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi sizeof(struct dwc3_trb) * DWC3_TRB_NUM, 24172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dep->trb_pool_dma, GFP_KERNEL); 24272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep->trb_pool) { 24372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dep->dwc->dev, "failed to allocate trb pool for %s\n", 24472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 24572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ENOMEM; 24672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 24772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 24972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 25072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_free_trb_pool(struct dwc3_ep *dep) 25272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 25372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 25472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM, 25672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool, dep->trb_pool_dma); 25772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool = NULL; 25972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool_dma = 0; 26072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 26172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 26272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep) 26372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 26472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 26572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 26672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 26772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 26872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 26972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number != 1) { 27072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_DEPSTARTCFG; 27172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* XferRscIdx == 0 for ep0 and 2 for the remaining */ 272b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman if (dep->number > 1) { 273b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman if (dwc->start_config_issued) 274b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman return 0; 275b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = true; 27672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(2); 277b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman } 27872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 27972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, ¶ms); 28072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 28172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 28272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 28372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 28472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 28572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, 286c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_endpoint_descriptor *desc, 287c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_ss_ep_comp_descriptor *comp_desc) 28872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 28972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 29072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 29172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 29272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 293dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc)) 294dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc)) 295dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst); 29672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 297dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN 298dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_XFER_NOT_READY_EN; 29972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 30018b7ede5f7ee2092aedcb578d3ac30bd5d4fc23cFelipe Balbi if (usb_ss_max_streams(comp_desc) && usb_endpoint_xfer_bulk(desc)) { 301dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_STREAM_CAPABLE 302dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_STREAM_EVENT_EN; 303879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->stream_capable = true; 304879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi } 305879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 30672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(desc)) 307dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_XFER_IN_PROGRESS_EN; 30872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 30972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 31072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We are doing 1:1 mapping for endpoints, meaning 31172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Physical Endpoints 2 maps to Logical Endpoint 2 and 31272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * so on. We consider the direction bit as part of the physical 31372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * endpoint number. So USB endpoint 0x81 is 0x03. 31472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 315dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_EP_NUMBER(dep->number); 31672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 31772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 31872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We must use the lower 16 TX FIFOs even though 31972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * HW might have more 32072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 32172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->direction) 322dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1); 32372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 32472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (desc->bInterval) { 325dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(desc->bInterval - 1); 32672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->interval = 1 << (desc->bInterval - 1); 32772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 32872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 32972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, dep->number, 33072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETEPCONFIG, ¶ms); 33172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 33272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep) 33472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 33572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 33672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 33872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 339dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 = DWC3_DEPXFERCFG_NUM_XFER_RES(1); 34072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, dep->number, 34272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETTRANSFRESOURCE, ¶ms); 34372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 34472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 34672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * __dwc3_gadget_ep_enable - Initializes a HW endpoint 34772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: endpoint to be initialized 34872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @desc: USB Endpoint Descriptor 34972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 35072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Caller should take care of locking 35172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 35272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, 353c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_endpoint_descriptor *desc, 354c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_ss_ep_comp_descriptor *comp_desc) 35572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 35672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 35772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 35872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = -ENOMEM; 35972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 36072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 36172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_start_config(dwc, dep); 36272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 36372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 36472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 36572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 366c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = dwc3_gadget_set_ep_config(dwc, dep, desc, comp_desc); 36772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 36872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 36972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 37172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb_st_hw; 37272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb_hw *trb_link_hw; 37372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb trb_link; 37472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_set_xfer_resource(dwc, dep); 37672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 37772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 37872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->desc = desc; 380c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi dep->comp_desc = comp_desc; 38172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->type = usb_endpoint_type(desc); 38272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_ENABLED; 38372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 38472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); 38572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DALEPENA_EP(dep->number); 38672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); 38772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 38872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb_endpoint_xfer_isoc(desc)) 38972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 39072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(&trb_link, 0, sizeof(trb_link)); 39272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Link TRB for ISOC. The HWO but is never reset */ 39472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_st_hw = &dep->trb_pool[0]; 39572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link.bplh = dwc3_trb_dma_offset(dep, trb_st_hw); 39772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link.trbctl = DWC3_TRBCTL_LINK_TRB; 39872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link.hwo = true; 39972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_link_hw = &dep->trb_pool[DWC3_TRB_NUM - 1]; 40172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_trb_to_hw(&trb_link, trb_link_hw); 40272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 40372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 40572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 40672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 407624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewiorstatic void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum); 408624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewiorstatic void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep) 40972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 41072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 41172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 412624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior if (!list_empty(&dep->req_queued)) 413624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_stop_active_transfer(dwc, dep->number); 414624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior 41572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (!list_empty(&dep->request_list)) { 41672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->request_list); 41772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 418624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_gadget_giveback(dep, req, -ESHUTDOWN); 41972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 42072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 42172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 42272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 42372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * __dwc3_gadget_ep_disable - Disables a HW endpoint 42472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: the endpoint to disable 42572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 426624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * This function also removes requests which are currently processed ny the 427624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * hardware and those which are not yet scheduled. 428624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * Caller should take care of locking. 42972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 43072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) 43172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 43272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 43372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 43472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 435624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_remove_requests(dwc, dep); 43672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 43772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); 43872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DALEPENA_EP(dep->number); 43972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); 44072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 441879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->stream_capable = false; 44272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->desc = NULL; 443f9c56cdd3905c96c600456203637bd7ec8ec6383Ido Shayevitz dep->endpoint.desc = NULL; 444c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi dep->comp_desc = NULL; 44572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->type = 0; 446879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->flags = 0; 44772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 44872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 44972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 45072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 45272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep0_enable(struct usb_ep *ep, 45472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 45572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 45672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 45772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 45872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep0_disable(struct usb_ep *ep) 46072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 46172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 46272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 46372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 46572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_enable(struct usb_ep *ep, 46772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 46872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 46972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 47072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc; 47172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 47272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 47372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 47472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) { 47572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: invalid parameters\n"); 47672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 47772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 47872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 47972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!desc->wMaxPacketSize) { 48072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: missing wMaxPacketSize\n"); 48172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 48272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 48372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 48472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = to_dwc3_ep(ep); 48572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc = dep->dwc; 48672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 48772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (usb_endpoint_type(desc)) { 48872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_CONTROL: 48972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-control", sizeof(dep->name)); 49072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 49172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_ISOC: 49272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-isoc", sizeof(dep->name)); 49372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 49472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_BULK: 49572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-bulk", sizeof(dep->name)); 49672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 49772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_INT: 49872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi strncat(dep->name, "-int", sizeof(dep->name)); 49972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 50072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 50172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "invalid endpoint transfer type\n"); 50272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 50372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 50472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->flags & DWC3_EP_ENABLED) { 50572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_WARN_ONCE(dwc->dev, true, "%s is already enabled\n", 50672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 50772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 50872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 50972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Enabling %s\n", dep->name); 51172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 513c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, desc, ep->comp_desc); 51472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 51572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 51772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 51872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_disable(struct usb_ep *ep) 52072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 52172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 52272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc; 52372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 52472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 52572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 52672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ep) { 52772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: invalid parameters\n"); 52872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 52972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 53072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 53172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = to_dwc3_ep(ep); 53272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc = dep->dwc; 53372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 53472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 53572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_WARN_ONCE(dwc->dev, true, "%s is already disabled\n", 53672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 53772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 53872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 53972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 54072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi snprintf(dep->name, sizeof(dep->name), "ep%d%s", 54172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number >> 1, 54272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi (dep->number & 1) ? "in" : "out"); 54372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 54472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 54572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_disable(dep); 54672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 54772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 54872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 54972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 55072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 55172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, 55272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi gfp_t gfp_flags) 55372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 55472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 55572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 55672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 55772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 55872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = kzalloc(sizeof(*req), gfp_flags); 55972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) { 56072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "not enough memory\n"); 56172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return NULL; 56272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 56372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 56472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->epnum = dep->number; 56572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->dep = dep; 56672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.dma = DMA_ADDR_INVALID; 56772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 56872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return &req->request; 56972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 57072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 57172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_ep_free_request(struct usb_ep *ep, 57272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_request *request) 57372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 57472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 57572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 57672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi kfree(req); 57772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 57872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 579c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi/** 580c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * dwc3_prepare_one_trb - setup one TRB from one request 581c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * @dep: endpoint for which this request is prepared 582c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * @req: dwc3_request pointer 583c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi */ 58468e823e24aea5227eaf20d6435485e733109d113Felipe Balbistatic void dwc3_prepare_one_trb(struct dwc3_ep *dep, 585eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct dwc3_request *req, dma_addr_t dma, 586eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi unsigned length, unsigned last, unsigned chain) 587c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi{ 588eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct dwc3 *dwc = dep->dwc; 589c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi struct dwc3_trb_hw *trb_hw; 590c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi struct dwc3_trb trb; 591c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 592c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi unsigned int cur_slot; 593c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 594eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dev_vdbg(dwc->dev, "%s: req %p dma %08llx length %d%s%s\n", 595eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dep->name, req, (unsigned long long) dma, 596eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi length, last ? " last" : "", 597eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi chain ? " chain" : ""); 598eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 599c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb_hw = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK]; 600c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi cur_slot = dep->free_slot; 601c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi dep->free_slot++; 602c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 603c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi /* Skip the LINK-TRB on ISOC */ 604c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi if (((cur_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && 605c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi usb_endpoint_xfer_isoc(dep->desc)) 60668e823e24aea5227eaf20d6435485e733109d113Felipe Balbi return; 607c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 608c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi memset(&trb, 0, sizeof(trb)); 609eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (!req->trb) { 610eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc3_gadget_move_request_queued(req); 611eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->trb = trb_hw; 612eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->trb_dma = dwc3_trb_dma_offset(dep, trb_hw); 613eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 614c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 615c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 616c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.isp_imi = true; 617c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.csp = true; 618c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi } else { 619eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trb.chn = chain; 620c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.lst = last; 621c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi } 622c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 623c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable) 624c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.sid_sofn = req->request.stream_id; 625c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 626c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi switch (usb_endpoint_type(dep->desc)) { 627c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_CONTROL: 628c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.trbctl = DWC3_TRBCTL_CONTROL_SETUP; 629c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi break; 630c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 631c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_ISOC: 632c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.trbctl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; 633c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 634c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi /* IOC every DWC3_TRB_NUM / 4 so we can refill */ 635c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi if (!(cur_slot % (DWC3_TRB_NUM / 4))) 636c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.ioc = last; 637c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi break; 638c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 639c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_BULK: 640c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_INT: 641c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.trbctl = DWC3_TRBCTL_NORMAL; 642c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi break; 643c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi default: 644c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi /* 645c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * This is only possible with faulty memory because we 646c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * checked it already :) 647c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi */ 648c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi BUG(); 649c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi } 650c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 651eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trb.length = length; 652eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trb.bplh = dma; 653c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi trb.hwo = true; 654c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 655c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi dwc3_trb_to_hw(&trb, trb_hw); 656c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi} 657c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 65872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* 65972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * dwc3_prepare_trbs - setup TRBs from requests 66072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: endpoint for which requests are being prepared 66172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @starting: true if the endpoint is idle and no requests are queued. 66272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 66372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * The functions goes through the requests list and setups TRBs for the 66472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfers. The functions returns once there are not more TRBs available or 66572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * it run out of requests. 66672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 66768e823e24aea5227eaf20d6435485e733109d113Felipe Balbistatic void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting) 66872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 66968e823e24aea5227eaf20d6435485e733109d113Felipe Balbi struct dwc3_request *req, *n; 67072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 trbs_left; 671c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi unsigned int last_one = 0; 67272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 67372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM); 67472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 67572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* the first request must not be queued */ 67672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK; 677c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 67872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 67972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * if busy & slot are equal than it is either full or empty. If we are 68072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * starting to proceed requests then we are empty. Otherwise we ar 68172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * full and don't do anything 68272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 68372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!trbs_left) { 68472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!starting) 68568e823e24aea5227eaf20d6435485e733109d113Felipe Balbi return; 68672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left = DWC3_TRB_NUM; 68772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 68872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In case we start from scratch, we queue the ISOC requests 68972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * starting from slot 1. This is done because we use ring 69072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * buffer and have no LST bit to stop us. Instead, we place 69172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IOC bit TRB_NUM/4. We try to avoid to having an interrupt 69272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * after the first request so we start at slot 1 and have 69372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 7 requests proceed before we hit the first IOC. 69472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Other transfer types don't use the ring buffer and are 69572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * processed from the first TRB until the last one. Since we 69672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * don't wrap around we have to start at the beginning. 69772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 69872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 69972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot = 1; 70072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot = 1; 70172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 70272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot = 0; 70372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot = 0; 70472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 70572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 70672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 70772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* The last TRB is a link TRB, not used for xfer */ 70872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((trbs_left <= 1) && usb_endpoint_xfer_isoc(dep->desc)) 70968e823e24aea5227eaf20d6435485e733109d113Felipe Balbi return; 71072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 71172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry_safe(req, n, &dep->request_list, list) { 712eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi unsigned length; 713eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma_addr_t dma; 71472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 715eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (req->request.num_mapped_sgs > 0) { 716eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct usb_request *request = &req->request; 717eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct scatterlist *sg = request->sg; 718eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct scatterlist *s; 719eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi int i; 72072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 721eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi for_each_sg(sg, s, request->num_mapped_sgs, i) { 722eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi unsigned chain = true; 72372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 724eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi length = sg_dma_len(s); 725eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma = sg_dma_address(s); 72672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 727eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (i == (request->num_mapped_sgs - 1) 728eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi || sg_is_last(s)) { 729eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = true; 730eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi chain = false; 731eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 73272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 733eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trbs_left--; 734eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (!trbs_left) 735eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = true; 73672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 737eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (last_one) 738eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi chain = false; 73972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 740eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc3_prepare_one_trb(dep, req, dma, length, 741eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one, chain); 74272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 743eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (last_one) 744eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi break; 745eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 74672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 747eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma = req->request.dma; 748eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi length = req->request.length; 749eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trbs_left--; 75072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 751eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (!trbs_left) 752eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = 1; 753879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 754eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi /* Is this the last request? */ 755eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (list_is_last(&req->list, &dep->request_list)) 756eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = 1; 75772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 758eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc3_prepare_one_trb(dep, req, dma, length, 759eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one, false); 76072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 761eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (last_one) 762eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi break; 76372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 76472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 76572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 76672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 76772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, 76872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_new) 76972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 77072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 77172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 77272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 77372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 77472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 77572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 77672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new && (dep->flags & DWC3_EP_BUSY)) { 77772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: endpoint busy\n", dep->name); 77872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EBUSY; 77972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 78072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_PENDING_REQUEST; 78172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 78272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 78372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * If we are getting here after a short-out-packet we don't enqueue any 78472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * new requests as we try to set the IOC bit only on the last request. 78572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 78672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new) { 78772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->req_queued)) 78872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_prepare_trbs(dep, start_new); 78972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 79072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* req points to the first request which will be sent */ 79172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->req_queued); 79272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 79368e823e24aea5227eaf20d6435485e733109d113Felipe Balbi dwc3_prepare_trbs(dep, start_new); 79468e823e24aea5227eaf20d6435485e733109d113Felipe Balbi 79572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 79672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * req points to the first request where HWO changed 79772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * from 0 to 1 79872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 79968e823e24aea5227eaf20d6435485e733109d113Felipe Balbi req = next_request(&dep->req_queued); 80072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 80172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) { 80272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_PENDING_REQUEST; 80372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 80472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 80572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 80672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 807dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 = upper_32_bits(req->trb_dma); 808dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 = lower_32_bits(req->trb_dma); 80972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 81072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new) 81172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_STARTTRANSFER; 81272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 81372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_UPDATETRANSFER; 81472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 81572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(cmd_param); 81672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); 81772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret < 0) { 81872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n"); 81972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 82072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 82172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * FIXME we need to iterate over the list of requests 82272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * here and stop, unmap, free and del each of the linked 82372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * requests instead of we do now. 82472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 82572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_unmap_buffer_from_dma(req); 82672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&req->list); 82772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 82872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 82972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_BUSY; 83172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc, 83272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number); 83325b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi 83425b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi WARN_ON_ONCE(!dep->res_trans_idx); 83525b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi 83672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 83772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 83872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) 84072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 84172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.actual = 0; 84272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.status = -EINPROGRESS; 84372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->direction = dep->direction; 84472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->epnum = dep->number; 84572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 84672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 84772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We only add to our list of requests now and 84872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * start consuming the list once we get XferNotReady 84972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IRQ. 85072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 85172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * That way, we avoid doing anything that we don't need 85272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * to do now and defer it until the point we receive a 85372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * particular token from the Host side. 85472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 85572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * This will also avoid Host cancelling URBs due to too 85672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * many NACKs. 85772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 85872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_map_buffer_to_dma(req); 85972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_add_tail(&req->list, &dep->request_list); 86072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 86172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 86272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * There is one special case: XferNotReady with 86372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * empty list of requests. We need to kick the 86472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfer here in that situation, otherwise 86572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * we will be NAKing forever. 86672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 86772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * If we get XferNotReady before gadget driver 86872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * has a chance to queue a request, we will ACK 86972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * the IRQ but won't be able to receive the data 87072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * until the next request is queued. The following 87172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * code is handling exactly that. 87272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 87372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->flags & DWC3_EP_PENDING_REQUEST) { 87472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 87572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_trans; 87672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 87772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi start_trans = 1; 87872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && 87972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags & DWC3_EP_BUSY) 88072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi start_trans = 0; 88172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 88272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_kick_transfer(dep, 0, start_trans); 88372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret && ret != -EBUSY) { 88472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 88572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 88672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s: failed to kick transfers\n", 88772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 88872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 88972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi }; 89072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 89172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 89272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 89372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 89472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, 89572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi gfp_t gfp_flags) 89672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 89772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 89872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 89972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 90072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 90272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 90472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep->desc) { 90672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n", 90772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name); 90872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ESHUTDOWN; 90972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 91072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "queing request %p to %s length %d\n", 91272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name, request->length); 91372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 91572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_queue(dep, req); 91672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 91772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 91972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 92072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 92172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_dequeue(struct usb_ep *ep, 92272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_request *request) 92372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 92472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 92572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *r = NULL; 92672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 92772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 92872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 92972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 93172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 93272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 93472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry(r, &dep->request_list, list) { 93672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) 93772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 93872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 93972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 94072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r != req) { 94172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry(r, &dep->req_queued, list) { 94272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) 94372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 94472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 94572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) { 94672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* wait until it is processed */ 94772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfer(dwc, dep->number); 94872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out0; 94972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 95072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "request %p was not queued to %s\n", 95172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name); 95272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 95372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out0; 95472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 95572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 95672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* giveback the request */ 95772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_giveback(dep, req, -ECONNRESET); 95872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 95972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout0: 96072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 96172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 96272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 96372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 96472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 96572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value) 96672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 96772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 96872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 96972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 97072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 97172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 97272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 97372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (value) { 9740b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi if (dep->number == 0 || dep->number == 1) { 9750b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi /* 9760b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi * Whenever EP0 is stalled, we will restart 9770b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi * the state machine, thus moving back to 9780b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi * Setup Phase 9790b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi */ 9800b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi dwc->ep0state = EP0_SETUP_PHASE; 9810b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi } 98272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 98372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 98472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETSTALL, ¶ms); 98572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 98672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to %s STALL on %s\n", 98772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi value ? "set" : "clear", 98872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 98972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 99072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_STALL; 99172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 9925275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman if (dep->flags & DWC3_EP_WEDGE) 9935275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman return 0; 9945275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman 99572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 99672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_CLEARSTALL, ¶ms); 99772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 99872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to %s STALL on %s\n", 99972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi value ? "set" : "clear", 100072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 100172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 100272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_STALL; 100372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 10045275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman 100572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 100672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 100772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 100872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_set_halt(struct usb_ep *ep, int value) 100972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 101072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 101172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 101272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 101372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 101472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 101572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 101672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 101772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 101872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 101972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 102072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name); 102172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 102272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 102372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 102472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 102572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_set_halt(dep, value); 102672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout: 102772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 102872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 102972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 103072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 103172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_set_wedge(struct usb_ep *ep) 103372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 103472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 103572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_WEDGE; 103772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 10385275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman return dwc3_gadget_ep_set_halt(ep, 1); 103972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 104072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 104272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct usb_endpoint_descriptor dwc3_gadget_ep0_desc = { 104472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bLength = USB_DT_ENDPOINT_SIZE, 104572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bDescriptorType = USB_DT_ENDPOINT, 104672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bmAttributes = USB_ENDPOINT_XFER_CONTROL, 104772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 104872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_ep_ops dwc3_gadget_ep0_ops = { 105072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .enable = dwc3_gadget_ep0_enable, 105172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .disable = dwc3_gadget_ep0_disable, 105272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .alloc_request = dwc3_gadget_ep_alloc_request, 105372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .free_request = dwc3_gadget_ep_free_request, 105472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .queue = dwc3_gadget_ep0_queue, 105572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .dequeue = dwc3_gadget_ep_dequeue, 105672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_halt = dwc3_gadget_ep_set_halt, 105772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_wedge = dwc3_gadget_ep_set_wedge, 105872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 105972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_ep_ops dwc3_gadget_ep_ops = { 106172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .enable = dwc3_gadget_ep_enable, 106272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .disable = dwc3_gadget_ep_disable, 106372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .alloc_request = dwc3_gadget_ep_alloc_request, 106472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .free_request = dwc3_gadget_ep_free_request, 106572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .queue = dwc3_gadget_ep_queue, 106672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .dequeue = dwc3_gadget_ep_dequeue, 106772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_halt = dwc3_gadget_ep_set_halt, 106872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_wedge = dwc3_gadget_ep_set_wedge, 106972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 107072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 107272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_get_frame(struct usb_gadget *g) 107472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 107572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 107672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 107772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 107972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return DWC3_DSTS_SOFFN(reg); 108072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 108172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 108272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_wakeup(struct usb_gadget *g) 108372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 108472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 108572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 108672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long timeout; 108772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 108872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 108972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 109072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 109172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 109272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 109372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 link_state; 109472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 speed; 109572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 109672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 109772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 109872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 109972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * According to the Databook Remote wakeup request should 110072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * be issued only when the device is in early suspend state. 110172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 110272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We can check that via USB Link State bits in DSTS register. 110372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 110472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 110572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 110672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi speed = reg & DWC3_DSTS_CONNECTSPD; 110772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (speed == DWC3_DSTS_SUPERSPEED) { 110872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "no wakeup on SuperSpeed\n"); 110972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 111072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 111172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 111272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 111372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi link_state = DWC3_DSTS_USBLNKST(reg); 111472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 111572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (link_state) { 111672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_LINK_STATE_RX_DET: /* in HS, means Early Suspend */ 111772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_LINK_STATE_U3: /* in HS, means SUSPEND */ 111872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 111972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 112072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "can't wakeup from link state %d\n", 112172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi link_state); 112272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 112372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 112472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 112572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 112672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 112772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 112872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 112972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Switch link state to Recovery. In HS/FS/LS this means 113072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * RemoteWakeup Request 113172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 113272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DCTL_ULSTCHNG_RECOVERY; 113372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 113472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 113572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* wait for at least 2000us */ 113672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usleep_range(2000, 2500); 113772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 113872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* write zeroes to Link Change Request */ 113972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; 114072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 114172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 114272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* pool until Link State change to ON */ 114372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout = jiffies + msecs_to_jiffies(100); 114472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 114572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (!(time_after(jiffies, timeout))) { 114672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 114772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 114872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* in HS, means ON */ 114972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) == DWC3_LINK_STATE_U0) 115072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 115172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 115272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 115372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) != DWC3_LINK_STATE_U0) { 115472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to send remote wakeup\n"); 115572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 115672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 115772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 115872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout: 115972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 116072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 116272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 116372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_selfpowered(struct usb_gadget *g, 116572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int is_selfpowered) 116672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 116772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 116872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->is_selfpowered = !!is_selfpowered; 117072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 117272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 117372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) 117572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 117672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 117761d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior u32 timeout = 500; 117872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 118072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (is_on) 118172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DCTL_RUN_STOP; 118272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 118372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_RUN_STOP; 118472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 118572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 118672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 118772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 118872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 118972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (is_on) { 119072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(reg & DWC3_DSTS_DEVCTRLHLT)) 119172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 119272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 119372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (reg & DWC3_DSTS_DEVCTRLHLT) 119472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 119572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 119672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout--; 119772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!timeout) 119872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 119961d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior udelay(1); 120072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 120172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "gadget %s data soft-%s\n", 120372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver 120472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? dwc->gadget_driver->function : "no-function", 120572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi is_on ? "connect" : "disconnect"); 120672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 120772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) 120972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 121072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 121172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 121272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 121372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi is_on = !!is_on; 121472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 121572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 121672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_run_stop(dwc, is_on); 121772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 121872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 121972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 122072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 122172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_start(struct usb_gadget *g, 122372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_gadget_driver *driver) 122472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 122572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 122672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 122772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 122872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 122972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 123072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 123172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 123272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 123372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget_driver) { 123472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s is already bound to %s\n", 123572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.name, 123672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->driver.name); 123772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EBUSY; 123872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 123972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 124072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver = driver; 124272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.driver = &driver->driver; 124372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCFG); 124572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~(DWC3_DCFG_SPEED_MASK); 12466c167fc9b0c23ead791edb94cf4debb6b8e534b5Felipe Balbi reg |= dwc->maximum_speed; 124772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCFG, reg); 124872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1249b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = false; 1250b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman 125172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Start with SuperSpeed Default */ 125272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); 125372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 125472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[0]; 1255c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 125672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 125772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 125872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 125972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 126072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 126172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[1]; 1262c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 126372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 126472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 126572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err1; 126672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 126772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 126872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* begin to receive SETUP packets */ 1269c7fcdeb2627c46b7ec3f0bcb2054b10405f9a70eFelipe Balbi dwc->ep0state = EP0_SETUP_PHASE; 127072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep0_out_start(dwc); 127172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 127372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 127572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr1: 127772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[0]); 127872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 127972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr0: 128072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 128172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 128272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 128372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 128472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 128572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_stop(struct usb_gadget *g, 128672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_gadget_driver *driver) 128772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 128872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 128972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 129072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 129272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[0]); 129472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[1]); 129572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver = NULL; 129772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.driver = NULL; 129872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 130072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 130172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 130272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 130372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_gadget_ops dwc3_gadget_ops = { 130472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .get_frame = dwc3_gadget_get_frame, 130572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .wakeup = dwc3_gadget_wakeup, 130672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_selfpowered = dwc3_gadget_set_selfpowered, 130772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .pullup = dwc3_gadget_pullup, 130872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .udc_start = dwc3_gadget_start, 130972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .udc_stop = dwc3_gadget_stop, 131072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 131172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 131272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 131372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 131472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __devinit dwc3_gadget_init_endpoints(struct dwc3 *dwc) 131572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 131672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 131772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum; 131872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 131972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dwc->gadget.ep_list); 132072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 132172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 132272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = kzalloc(sizeof(*dep), GFP_KERNEL); 132372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep) { 132472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "can't allocate endpoint %d\n", 132572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi epnum); 132672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ENOMEM; 132772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 132872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 132972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->dwc = dwc; 133072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number = epnum; 133172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->eps[epnum] = dep; 133272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 133372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1, 133472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi (epnum & 1) ? "in" : "out"); 133572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.name = dep->name; 133672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->direction = (epnum & 1); 133772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 133872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum == 0 || epnum == 1) { 133972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.maxpacket = 512; 134072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.ops = &dwc3_gadget_ep0_ops; 134172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!epnum) 134272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0 = &dep->endpoint; 134372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 134472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 134572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 134672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.maxpacket = 1024; 134712d36c16bde3ee0643d705caa87723de536dbe49Sebastian Andrzej Siewior dep->endpoint.max_streams = 15; 134872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.ops = &dwc3_gadget_ep_ops; 134972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_add_tail(&dep->endpoint.ep_list, 135072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->gadget.ep_list); 135172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 135272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_alloc_trb_pool(dep); 135325b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi if (ret) 135472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 135572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 135625b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi 135772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dep->request_list); 135872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dep->req_queued); 135972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 136072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 136272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 136372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_free_endpoints(struct dwc3 *dwc) 136572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 136672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 136772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum; 136872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 137072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 137172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_free_trb_pool(dep); 137272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 137372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum != 0 && epnum != 1) 137472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&dep->endpoint.ep_list); 137572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 137672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi kfree(dep); 137772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 137872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 137972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 138072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_release(struct device *dev) 138172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 138272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dev, "%s\n", __func__); 138372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 138472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 138572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 138672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, 138772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event, int status) 138872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 138972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 139072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_trb trb; 139172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int count; 139272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int s_pkt = 0; 139372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 139472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 139572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->req_queued); 1396d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior if (!req) { 1397d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior WARN_ON_ONCE(1); 1398d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior return 1; 1399d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior } 140072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 140172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_trb_to_nat(req->trb, &trb); 140272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 14030d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior if (trb.hwo && status != -ESHUTDOWN) 14040d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior /* 14050d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * We continue despite the error. There is not much we 14060d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * can do. If we don't clean in up we loop for ever. If 14070d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * we skip the TRB than it gets overwritten reused after 14080d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * a while since we use them in a ring buffer. a BUG() 14090d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * would help. Lets hope that if this occures, someone 14100d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * fixes the root cause instead of looking away :) 14110d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior */ 141272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n", 141372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, req->trb); 141472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count = trb.length; 141572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 141672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->direction) { 141772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (count) { 141872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "incomplete IN transfer %s\n", 141972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 142072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = -ECONNRESET; 142172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 142272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 142372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (count && (event->status & DEPEVT_STATUS_SHORT)) 142472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi s_pkt = 1; 142572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 142672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 142772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 142872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We assume here we will always receive the entire data block 142972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * which we should receive. Meaning, if we program RX to 143072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * receive 4K but we receive only 2K, we assume that's all we 143172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * should receive and we simply bounce the request back to the 143272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * gadget driver for further processing. 143372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 143472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.actual += req->request.length - count; 143572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_giveback(dep, req, status); 143672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (s_pkt) 143772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 143872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((event->status & DEPEVT_STATUS_LST) && trb.lst) 143972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 144072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc) 144172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 144272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 144372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc) 144572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 144672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 1; 144772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 144872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, 145072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep, const struct dwc3_event_depevt *event, 145172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_new) 145272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 145372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned status = 0; 145472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int clean_busy; 145572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->status & DEPEVT_STATUS_BUSERR) 145772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = -ECONNRESET; 145872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status); 1460a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior if (clean_busy) { 146172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_BUSY; 1462a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior dep->res_trans_idx = 0; 1463a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior } 1464fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1465fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi /* 1466fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround. 1467fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * See dwc3_gadget_linksts_change_interrupt() for 1st half. 1468fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi */ 1469fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (dwc->revision < DWC3_REVISION_183A) { 1470fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u32 reg; 1471fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi int i; 1472fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1473fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) { 1474fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi struct dwc3_ep *dep = dwc->eps[i]; 1475fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1476fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) 1477fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi continue; 1478fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1479fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (!list_empty(&dep->req_queued)) 1480fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi return; 1481fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 1482fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1483fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 1484fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg |= dwc->u1u2; 1485fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 1486fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1487fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc->u1u2 = 0; 1488fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 148972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 149072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 149172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_start_isoc(struct dwc3 *dwc, 149272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep, const struct dwc3_event_depevt *event) 149372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 149472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 uf; 149572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 149672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->request_list)) { 149772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", 149872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 149972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 150072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 150172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 150272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->parameters) { 150372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 mask; 150472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 150572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi mask = ~(dep->interval - 1); 150672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi uf = event->parameters & mask; 150772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 4 micro frames in the future */ 150872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi uf += dep->interval * 4; 150972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 151072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi uf = 0; 151172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 151272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 151372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_kick_transfer(dep, uf, 1); 151472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 151572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 151672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep, 151772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 151872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 151972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 152072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_event_depevt mod_ev = *event; 152172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 152272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 152372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We were asked to remove one requests. It is possible that this 152472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * request and a few other were started together and have the same 152572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfer index. Since we stopped the complete endpoint we don't 152672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * know how many requests were already completed (and not yet) 152772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * reported and how could be done (later). We purge them all until 152872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * the end of the list. 152972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 153072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi mod_ev.status = DEPEVT_STATUS_LST; 153172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN); 153272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_BUSY; 153372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* pending requets are ignored and are queued on XferNotReady */ 153472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 153572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 153672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_ep_cmd_compl(struct dwc3_ep *dep, 153772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 153872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 153972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 param = event->parameters; 154072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd_type = (param >> 8) & ((1 << 5) - 1); 154172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 154272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (cmd_type) { 154372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_ENDTRANSFER: 154472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_process_ep_cmd_complete(dep, event); 154572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 154672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_STARTTRANSFER: 154772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->res_trans_idx = param & 0x7f; 154872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 154972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 155072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi printk(KERN_ERR "%s() unknown /unexpected type: %d\n", 155172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __func__, cmd_type); 155272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 155372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi }; 155472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 155572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 155672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_endpoint_interrupt(struct dwc3 *dwc, 155772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 155872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 155972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 156072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum = event->endpoint_number; 156172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 156372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: %s\n", dep->name, 156572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep_event_string(event->endpoint_event)); 156672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum == 0 || epnum == 1) { 156872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep0_interrupt(dwc, event); 156972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 157072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 157172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 157272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->endpoint_event) { 157372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERCOMPLETE: 157472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 157572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n", 157672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 157772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 157872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 157972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 158072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_endpoint_transfer_complete(dwc, dep, event, 1); 158172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 158272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERINPROGRESS: 158372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb_endpoint_xfer_isoc(dep->desc)) { 158472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n", 158572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 158672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 158772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 158872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 158972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_endpoint_transfer_complete(dwc, dep, event, 0); 159072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 159172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERNOTREADY: 159272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(dep->desc)) { 159372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_start_isoc(dwc, dep, event); 159472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 159572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 159672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 159772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: reason %s\n", 159872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, event->status 159972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? "Transfer Active" 160072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi : "Transfer Not Active"); 160172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 160272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_kick_transfer(dep, 0, 1); 160372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ret || ret == -EBUSY) 160472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 160572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 160672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s: failed to kick transfers\n", 160772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 160872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 160972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 161072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 1611879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi case DWC3_DEPEVT_STREAMEVT: 1612879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi if (!usb_endpoint_xfer_bulk(dep->desc)) { 1613879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dev_err(dwc->dev, "Stream event for non-Bulk %s\n", 1614879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->name); 1615879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi return; 1616879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi } 1617879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 1618879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi switch (event->status) { 1619879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi case DEPEVT_STREAMEVT_FOUND: 1620879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dev_vdbg(dwc->dev, "Stream %d found and started\n", 1621879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi event->parameters); 1622879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 1623879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi break; 1624879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi case DEPEVT_STREAMEVT_NOTFOUND: 1625879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi /* FALLTHROUGH */ 1626879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi default: 1627879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dev_dbg(dwc->dev, "Couldn't find suitable stream\n"); 1628879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi } 1629879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi break; 163072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_RXTXFIFOEVT: 163172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name); 163272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 163372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_EPCMDCMPLT: 163472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep_cmd_compl(dep, event); 163572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 163672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 163772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 163872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 163972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_disconnect_gadget(struct dwc3 *dwc) 164072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 164172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget_driver && dwc->gadget_driver->disconnect) { 164272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 164372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->disconnect(&dwc->gadget); 164472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 164572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 164672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 164772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 164872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum) 164972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 165072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 165172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 165272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 165372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 165472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 165572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 165672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1657624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior WARN_ON(!dep->res_trans_idx); 165872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->res_trans_idx) { 165972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_ENDTRANSFER; 166072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC; 166172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(dep->res_trans_idx); 166272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 166372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); 166472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi WARN_ON_ONCE(ret); 1665a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior dep->res_trans_idx = 0; 166672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 166772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 166872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 166972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_stop_active_transfers(struct dwc3 *dwc) 167072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 167172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 epnum; 167272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 167372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 2; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 167472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 167572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 167672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 167772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) 167872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 167972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1680624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_remove_requests(dwc, dep); 168172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 168272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 168372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 168472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_clear_stall_all_ep(struct dwc3 *dwc) 168572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 168672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 epnum; 168772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 168872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 1; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 168972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 169072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 169172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 169272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 169372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 169472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 169572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_STALL)) 169672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 169772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 169872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_STALL; 169972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 170072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 170172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 170272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_CLEARSTALL, ¶ms); 170372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi WARN_ON_ONCE(ret); 170472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 170572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 170672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 170772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) 170872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 170972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 171072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#if 0 171172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi XXX 171272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi U1/U2 is powersave optimization. Skip it for now. Anyway we need to 171372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi enable it before we can disable it. 171472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 171572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 171672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_INITU1ENA; 171772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 171872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 171972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_INITU2ENA; 172072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 172172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#endif 172272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfers(dwc); 172472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_disconnect_gadget(dwc); 1725b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = false; 172672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_UNKNOWN; 1728df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi dwc->setup_packet_pending = false; 172972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 173072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 173172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_usb3_phy_power(struct dwc3 *dwc, int on) 173272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 173372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 173472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 173572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 173672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 173772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (on) 173872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; 173972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 174072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GUSB3PIPECTL_SUSPHY; 174172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 174272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 174372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 174472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 174572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_usb2_phy_power(struct dwc3 *dwc, int on) 174672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 174772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 174872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 174972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 175072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 175172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (on) 175272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; 175372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 175472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GUSB2PHYCFG_SUSPHY; 175572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 175672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 175772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 175872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 175972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) 176072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 176172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 176272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 176372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 176472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1765df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi /* 1766df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * WORKAROUND: DWC3 revisions <1.88a have an issue which 1767df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * would cause a missing Disconnect Event if there's a 1768df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * pending Setup Packet in the FIFO. 1769df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1770df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * There's no suggested workaround on the official Bug 1771df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * report, which states that "unless the driver/application 1772df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * is doing any special handling of a disconnect event, 1773df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * there is no functional issue". 1774df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1775df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Unfortunately, it turns out that we _do_ some special 1776df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * handling of a disconnect event, namely complete all 1777df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * pending transfers, notify gadget driver of the 1778df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * disconnection, and so on. 1779df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1780df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Our suggested workaround is to follow the Disconnect 1781df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Event steps here, instead, based on a setup_packet_pending 1782df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * flag. Such flag gets set whenever we have a XferNotReady 1783df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * event on EP0 and gets cleared on XferComplete for the 1784df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * same endpoint. 1785df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1786df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Refers to: 1787df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1788df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * STAR#9000466709: RTL: Device : Disconnect event not 1789df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * generated if setup packet pending in FIFO 1790df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi */ 1791df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi if (dwc->revision < DWC3_REVISION_188A) { 1792df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi if (dwc->setup_packet_pending) 1793df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi dwc3_gadget_disconnect_interrupt(dwc); 1794df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi } 1795df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi 1796961906edb549c95f4cc33e4f3dbfd0fcc364954dFelipe Balbi /* after reset -> Default State */ 1797961906edb549c95f4cc33e4f3dbfd0fcc364954dFelipe Balbi dwc->dev_state = DWC3_DEFAULT_STATE; 1798961906edb549c95f4cc33e4f3dbfd0fcc364954dFelipe Balbi 179972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Enable PHYs */ 180072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb2_phy_power(dwc, true); 180172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb3_phy_power(dwc, true); 180272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 180372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget.speed != USB_SPEED_UNKNOWN) 180472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_disconnect_gadget(dwc); 180572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 180672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 180772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_TSTCTRL_MASK; 180872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 180972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 181072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfers(dwc); 181172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_clear_stall_all_ep(dwc); 1812b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = false; 181372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 181472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Reset device address to zero */ 181572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCFG); 181672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~(DWC3_DCFG_DEVADDR_MASK); 181772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCFG, reg); 181872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 181972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 182072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_update_ram_clk_sel(struct dwc3 *dwc, u32 speed) 182172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 182272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 182372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 usb30_clock = DWC3_GCTL_CLK_BUS; 182472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 182572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 182672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We change the clock only at SS but I dunno why I would want to do 182772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * this. Maybe it becomes part of the power saving plan. 182872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 182972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 183072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (speed != DWC3_DSTS_SUPERSPEED) 183172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 183272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 183372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 183472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * RAMClkSel is reset to 0 after USB reset, so it must be reprogrammed 183572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * each time on Connect Done. 183672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 183772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb30_clock) 183872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 183972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 184072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 184172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GCTL_RAMCLKSEL(usb30_clock); 184272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 184372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 184472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 184572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_disable_phy(struct dwc3 *dwc, u8 speed) 184672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 184772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (speed) { 184872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_SUPER: 184972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb2_phy_power(dwc, false); 185072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 185172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_HIGH: 185272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_FULL: 185372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_LOW: 185472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb3_phy_power(dwc, false); 185572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 185672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 185772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 185872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 185972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) 186072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 186172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 186272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 186372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 186472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 186572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 speed; 186672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 186872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 187072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 187172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 187272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi speed = reg & DWC3_DSTS_CONNECTSPD; 187372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->speed = speed; 187472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 187572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_update_ram_clk_sel(dwc, speed); 187672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 187772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (speed) { 187872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_SUPERSPEED: 187905870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi /* 188005870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * WORKAROUND: DWC3 revisions <1.90a have an issue which 188105870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * would cause a missing USB3 Reset event. 188205870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * 188305870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * In such situations, we should force a USB3 Reset 188405870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * event by calling our dwc3_gadget_reset_interrupt() 188505870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * routine. 188605870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * 188705870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * Refers to: 188805870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * 188905870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * STAR#9000483510: RTL: SS : USB3 reset event may 189005870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * not be generated always when the link enters poll 189105870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi */ 189205870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi if (dwc->revision < DWC3_REVISION_190A) 189305870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi dwc3_gadget_reset_interrupt(dwc); 189405870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi 189572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); 189672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 512; 189772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_SUPER; 189872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 189972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_HIGHSPEED: 190072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); 190172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 64; 190272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_HIGH; 190372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 190472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_FULLSPEED2: 190572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_FULLSPEED1: 190672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); 190772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 64; 190872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_FULL; 190972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 191072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_LOWSPEED: 191172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(8); 191272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 8; 191372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_LOW; 191472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 191572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 191672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 191772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Disable unneded PHY */ 191872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_disable_phy(dwc, dwc->gadget.speed); 191972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 192072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[0]; 1921c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 192272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 192372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 192472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 192572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 192672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 192772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[1]; 1928c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 192972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 193072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 193172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 193272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 193372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 193472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 193572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Configure PHY via GUSB3PIPECTLn if required. 193672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 193772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Update GTXFIFOSIZn 193872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 193972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In both cases reset values should be sufficient. 194072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 194172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 194272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 194372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc) 194472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 194572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 194672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 194772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 194872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * TODO take core out of low power mode when that's 194972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * implemented. 195072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 195172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 195272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->resume(&dwc->gadget); 195372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 195472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 195572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, 195672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int evtinfo) 195772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 1958fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi enum dwc3_link_state next = evtinfo & DWC3_LINK_STATE_MASK; 1959fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1960fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi /* 1961fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * WORKAROUND: DWC3 Revisions <1.83a have an issue which, depending 1962fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * on the link partner, the USB session might do multiple entry/exit 1963fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * of low power states before a transfer takes place. 1964fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 1965fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * Due to this problem, we might experience lower throughput. The 1966fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * suggested workaround is to disable DCTL[12:9] bits if we're 1967fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * transitioning from U1/U2 to U0 and enable those bits again 1968fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * after a transfer completes and there are no pending transfers 1969fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * on any of the enabled endpoints. 1970fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 1971fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * This is the first half of that workaround. 1972fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 1973fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * Refers to: 1974fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 1975fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * STAR#9000446952: RTL: Device SS : if U1/U2 ->U0 takes >128us 1976fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * core send LGO_Ux entering U0 1977fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi */ 1978fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (dwc->revision < DWC3_REVISION_183A) { 1979fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (next == DWC3_LINK_STATE_U0) { 1980fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u32 u1u2; 1981fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u32 reg; 1982fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1983fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi switch (dwc->link_state) { 1984fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi case DWC3_LINK_STATE_U1: 1985fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi case DWC3_LINK_STATE_U2: 1986fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 1987fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u1u2 = reg & (DWC3_DCTL_INITU2ENA 1988fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi | DWC3_DCTL_ACCEPTU2ENA 1989fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi | DWC3_DCTL_INITU1ENA 1990fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi | DWC3_DCTL_ACCEPTU1ENA); 1991fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1992fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (!dwc->u1u2) 1993fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc->u1u2 = reg & u1u2; 1994fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1995fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg &= ~u1u2; 1996fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1997fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 1998fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi break; 1999fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi default: 2000fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi /* do nothing */ 2001fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi break; 2002fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 2003fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 2004fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 2005fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2006fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc->link_state = next; 2007019ac83252dc2b356cb0ca81c25a077ec90309e7Felipe Balbi 2008019ac83252dc2b356cb0ca81c25a077ec90309e7Felipe Balbi dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state); 200972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 201072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 201172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_interrupt(struct dwc3 *dwc, 201272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_devt *event) 201372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 201472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->type) { 201572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_DISCONNECT: 201672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_disconnect_interrupt(dwc); 201772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 201872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_RESET: 201972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_reset_interrupt(dwc); 202072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 202172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_CONNECT_DONE: 202272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_conndone_interrupt(dwc); 202372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 202472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_WAKEUP: 202572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_wakeup_interrupt(dwc); 202672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 202772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: 202872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_linksts_change_interrupt(dwc, event->event_info); 202972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 203072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_EOPF: 203172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "End of Periodic Frame\n"); 203272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 203372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_SOF: 203472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Start of Periodic Frame\n"); 203572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 203672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_ERRATIC_ERROR: 203772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Erratic Error\n"); 203872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 203972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_CMD_CMPL: 204072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Command Complete\n"); 204172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 204272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_OVERFLOW: 204372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Overflow\n"); 204472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 204572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 204672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "UNKNOWN IRQ %d\n", event->type); 204772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 204872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 204972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 205072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_process_event_entry(struct dwc3 *dwc, 205172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const union dwc3_event *event) 205272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 205372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Endpoint IRQ, handle it and return early */ 205472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->type.is_devspec == 0) { 205572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* depevt */ 205672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_endpoint_interrupt(dwc, &event->depevt); 205772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 205872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 205972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->type.type) { 206072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_EVENT_TYPE_DEV: 206172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_interrupt(dwc, &event->devt); 206272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 206372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* REVISIT what to do with Carkit and I2C events ? */ 206472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 206572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw); 206672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 206772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 206872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 206972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf) 207072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 207172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_event_buffer *evt; 207272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int left; 207372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 count; 207472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 207572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(buf)); 207672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count &= DWC3_GEVNTCOUNT_MASK; 207772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!count) 207872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return IRQ_NONE; 207972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 208072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi evt = dwc->ev_buffs[buf]; 208172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi left = count; 208272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 208372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (left > 0) { 208472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi union dwc3_event event; 208572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 208672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memcpy(&event.raw, (evt->buf + evt->lpos), sizeof(event.raw)); 208772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_process_event_entry(dwc, &event); 208872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 208972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * XXX we wrap around correctly to the next entry as almost all 209072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * entries are 4 bytes in size. There is one entry which has 12 209172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * bytes which is a regular entry followed by 8 bytes data. ATM 209272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * I don't know how things are organized if were get next to the 209372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * a boundary so I worry about that once we try to handle that. 209472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 209572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE; 209672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi left -= 4; 209772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 209872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(buf), 4); 209972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 210072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 210172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return IRQ_HANDLED; 210272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 210372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 210472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic irqreturn_t dwc3_interrupt(int irq, void *_dwc) 210572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 210672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = _dwc; 210772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int i; 210872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irqreturn_t ret = IRQ_NONE; 210972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 211072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 211172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 21129f622b2a407d8b34a5a7f5b4abd8b29b25cf4f32Felipe Balbi for (i = 0; i < dwc->num_event_buffers; i++) { 211372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irqreturn_t status; 211472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 211572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = dwc3_process_event_buf(dwc, i); 211672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (status == IRQ_HANDLED) 211772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = status; 211872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 211972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 212072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 212172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 212272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 212372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 212472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 212572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 212672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * dwc3_gadget_init - Initializes gadget related registers 212772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dwc: Pointer to out controller context structure 212872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 212972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Returns 0 on success otherwise negative errno. 213072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 213172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint __devinit dwc3_gadget_init(struct dwc3 *dwc) 213272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 213372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 213472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 213572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int irq; 213672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 213772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 213872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->ctrl_req_addr, GFP_KERNEL); 213972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->ctrl_req) { 214072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate ctrl request\n"); 214172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 214272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 214372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 214472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 214572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 214672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->ep0_trb_addr, GFP_KERNEL); 214772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->ep0_trb) { 214872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate ep0 trb\n"); 214972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 215072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err1; 215172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 215272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 215372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->setup_buf = dma_alloc_coherent(dwc->dev, 215472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi sizeof(*dwc->setup_buf) * 2, 215572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->setup_buf_addr, GFP_KERNEL); 215672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->setup_buf) { 215772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate setup buffer\n"); 215872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 215972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err2; 216072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 216172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 21625812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce = dma_alloc_coherent(dwc->dev, 21635812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 512, &dwc->ep0_bounce_addr, GFP_KERNEL); 21645812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi if (!dwc->ep0_bounce) { 21655812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dev_err(dwc->dev, "failed to allocate ep0 bounce buffer\n"); 21665812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi ret = -ENOMEM; 21675812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err3; 21685812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi } 21695812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 217072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_set_name(&dwc->gadget.dev, "gadget"); 217172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 217272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ops = &dwc3_gadget_ops; 2173d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz dwc->gadget.max_speed = USB_SPEED_SUPER; 217472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_UNKNOWN; 217572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.parent = dwc->dev; 2176eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc->gadget.sg_supported = true; 217772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 217872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_set_coherent_mask(&dwc->gadget.dev, dwc->dev->coherent_dma_mask); 217972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 218072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.dma_parms = dwc->dev->dma_parms; 218172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.dma_mask = dwc->dev->dma_mask; 218272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.release = dwc3_gadget_release; 218372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.name = "dwc3-gadget"; 218472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 218572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 218672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT: Here we should clear all pending IRQs to be 218772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * sure we're starting from a well known location. 218872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 218972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 219072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_init_endpoints(dwc); 219172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 21925812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err4; 219372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 219472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq = platform_get_irq(to_platform_device(dwc->dev), 0); 219572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 219672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = request_irq(irq, dwc3_interrupt, IRQF_SHARED, 219772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi "dwc3", dwc); 219872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 219972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to request irq #%d --> %d\n", 220072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq, ret); 22015812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err5; 220272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 220372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 220472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Enable all but Start and End of Frame IRQs */ 220572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN | 220672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_EVNTOVERFLOWEN | 220772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_CMDCMPLTEN | 220872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_ERRTICERREN | 220972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_WKUPEVTEN | 221072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_ULSTCNGEN | 221172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_CONNECTDONEEN | 221272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_USBRSTEN | 221372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_DISCONNEVTEN); 221472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); 221572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 221672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = device_register(&dwc->gadget.dev); 221772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 221872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to register gadget device\n"); 221972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi put_device(&dwc->gadget.dev); 22205812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err6; 222172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 222272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 222372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget); 222472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 222572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to register udc\n"); 22265812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err7; 222772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 222872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 222972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 223072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22315812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr7: 223272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi device_unregister(&dwc->gadget.dev); 223372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22345812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr6: 223572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); 223672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi free_irq(irq, dwc); 223772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22385812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr5: 223972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_free_endpoints(dwc); 224072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22415812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr4: 22425812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce, 22435812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce_addr); 22445812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 224572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr3: 224672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2, 224772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->setup_buf, dwc->setup_buf_addr); 224872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 224972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr2: 225072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 225172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb, dwc->ep0_trb_addr); 225272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 225372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr1: 225472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 225572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req, dwc->ctrl_req_addr); 225672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 225772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr0: 225872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 225972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 226072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 226172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_gadget_exit(struct dwc3 *dwc) 226272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 226372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int irq; 226472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 226572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usb_del_gadget_udc(&dwc->gadget); 226672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq = platform_get_irq(to_platform_device(dwc->dev), 0); 226772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 226872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); 226972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi free_irq(irq, dwc); 227072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 227172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_free_endpoints(dwc); 227272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22735812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce, 22745812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce_addr); 22755812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 227672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2, 227772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->setup_buf, dwc->setup_buf_addr); 227872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 227972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 228072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb, dwc->ep0_trb_addr); 228172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 228272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 228372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req, dwc->ctrl_req_addr); 228472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 228572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi device_unregister(&dwc->gadget.dev); 228672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 2287