gadget.c revision e8d4e8be860d935099ffcf695dcd29b55ae50b36
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 5704a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi/** 5804a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * dwc3_gadget_set_test_mode - Enables USB2 Test Modes 5904a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * @dwc: pointer to our context structure 6004a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * @mode: the mode to set (J, K SE0 NAK, Force Enable) 6104a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * 6204a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * Caller should take care of locking. This function will 6304a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * return 0 on success or -EINVAL if wrong Test Selector 6404a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi * is passed 6504a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi */ 6604a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbiint dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode) 6704a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi{ 6804a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi u32 reg; 6904a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi 7004a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 7104a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi reg &= ~DWC3_DCTL_TSTCTRL_MASK; 7204a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi 7304a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi switch (mode) { 7404a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi case TEST_J: 7504a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi case TEST_K: 7604a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi case TEST_SE0_NAK: 7704a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi case TEST_PACKET: 7804a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi case TEST_FORCE_EN: 7904a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi reg |= mode << 1; 8004a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi break; 8104a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi default: 8204a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi return -EINVAL; 8304a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi } 8404a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi 8504a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 8604a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi 8704a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi return 0; 8804a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi} 8904a9bfcd50dd568a8f1a10194a7f336f6b3ad81cFelipe Balbi 908598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi/** 918598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi * dwc3_gadget_set_link_state - Sets USB Link to a particular State 928598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi * @dwc: pointer to our context structure 938598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi * @state: the state to put link into 948598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi * 958598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi * Caller should take care of locking. This function will 96aee63e3cb6b0396b99c6387a47cb90a7417f3957Paul Zimmerman * return 0 on success or -ETIMEDOUT. 978598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi */ 988598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbiint dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state) 998598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi{ 100aee63e3cb6b0396b99c6387a47cb90a7417f3957Paul Zimmerman int retries = 10000; 1018598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi u32 reg; 1028598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 1038598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 1048598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; 1058598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 1068598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi /* set requested state */ 1078598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi reg |= DWC3_DCTL_ULSTCHNGREQ(state); 1088598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 1098598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 1108598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi /* wait for a change in DSTS */ 1118598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi while (--retries) { 1128598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 1138598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 1148598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) == state) 1158598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi return 0; 1168598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 117aee63e3cb6b0396b99c6387a47cb90a7417f3957Paul Zimmerman udelay(5); 1188598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi } 1198598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 1208598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi dev_vdbg(dwc->dev, "link state change request timed out\n"); 1218598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 1228598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi return -ETIMEDOUT; 1238598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi} 1248598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi 125457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi/** 126457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case 127457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * @dwc: pointer to our context structure 128457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * 129457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * This function will a best effort FIFO allocation in order 130457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * to improve FIFO usage and throughput, while still allowing 131457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * us to enable as many endpoints as possible. 132457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * 133457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * Keep in mind that this operation will be highly dependent 134457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * on the configured size for RAM1 - which contains TxFifo -, 135457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * the amount of endpoints enabled on coreConsultant tool, and 136457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * the width of the Master Bus. 137457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * 138457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * In the ideal world, we would always be able to satisfy the 139457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * following equation: 140457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * 141457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * ((512 + 2 * MDWIDTH-Bytes) + (Number of IN Endpoints - 1) * \ 142457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * (3 * (1024 + MDWIDTH-Bytes) + MDWIDTH-Bytes)) / MDWIDTH-Bytes 143457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * 144457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * Unfortunately, due to many variables that's not always the case. 145457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi */ 146457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbiint dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc) 147457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi{ 148457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int last_fifo_depth = 0; 149457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int ram1_depth; 150457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int fifo_size; 151457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int mdwidth; 152457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int num; 153457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 154457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi if (!dwc->needs_fifo_resize) 155457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi return 0; 156457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 157457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7); 158457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0); 159457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 160457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi /* MDWIDTH is represented in bits, we need it in bytes */ 161457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi mdwidth >>= 3; 162457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 163457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi /* 164457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * FIXME For now we will only allocate 1 wMaxPacketSize space 165457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * for each enabled endpoint, later patches will come to 166457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * improve this algorithm so that we better use the internal 167457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi * FIFO space 168457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi */ 169457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi for (num = 0; num < DWC3_ENDPOINTS_NUM; num++) { 170457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi struct dwc3_ep *dep = dwc->eps[num]; 171457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int fifo_number = dep->number >> 1; 1722e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi int mult = 1; 173457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi int tmp; 174457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 175457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi if (!(dep->number & 1)) 176457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi continue; 177457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 178457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) 179457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi continue; 180457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 18116e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_bulk(dep->endpoint.desc) 18216e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz || usb_endpoint_xfer_isoc(dep->endpoint.desc)) 1832e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi mult = 3; 1842e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi 1852e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi /* 1862e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * REVISIT: the following assumes we will always have enough 1872e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * space available on the FIFO RAM for all possible use cases. 1882e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * Make sure that's true somehow and change FIFO allocation 1892e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * accordingly. 1902e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * 1912e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * If we have Bulk or Isochronous endpoints, we want 1922e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * them to be able to be very, very fast. So we're giving 1932e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * those endpoints a fifo_size which is enough for 3 full 1942e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi * packets 1952e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi */ 1962e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi tmp = mult * (dep->endpoint.maxpacket + mdwidth); 197457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi tmp += mdwidth; 198457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 199457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi fifo_size = DIV_ROUND_UP(tmp, mdwidth); 2002e81c36a00d0eb8ce72faaaec1a1d865617374aeFelipe Balbi 201457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi fifo_size |= (last_fifo_depth << 16); 202457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 203457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi dev_vdbg(dwc->dev, "%s: Fifo Addr %04x Size %d\n", 204457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi dep->name, last_fifo_depth, fifo_size & 0xffff); 205457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 206457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(fifo_number), 207457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi fifo_size); 208457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 209457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi last_fifo_depth += (fifo_size & 0xffff); 210457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi } 211457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 212457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi return 0; 213457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi} 214457e84b6624b4d97e6ffae437887ea51a22d54a0Felipe Balbi 21572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, 21672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int status) 21772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 21872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 21972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->queued) { 221eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (req->request.num_mapped_sgs) 222eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dep->busy_slot += req->request.num_mapped_sgs; 223eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi else 224eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dep->busy_slot++; 225eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 22672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 22772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Skip LINK TRB. We can't use req->trb and check for 22872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * DWC3_TRBCTL_LINK_TRB because it points the TRB we just 22972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * completed (not the LINK TRB). 23072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 23172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (((dep->busy_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && 23216e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz usb_endpoint_xfer_isoc(dep->endpoint.desc)) 23372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot++; 23472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 23572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&req->list); 236eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi req->trb = NULL; 23772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (req->request.status == -EINPROGRESS) 23972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.status = status; 24072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 2410fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi usb_gadget_unmap_request(&dwc->gadget, &req->request, 2420fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi req->direction); 24372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n", 24572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req, dep->name, req->request.actual, 24672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.length, status); 24772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 2490fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi req->request.complete(&dep->endpoint, &req->request); 25072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 25172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 25272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 25372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const char *dwc3_gadget_ep_cmd_string(u8 cmd) 25472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 25572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (cmd) { 25672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_DEPSTARTCFG: 25772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Start New Configuration"; 25872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_ENDTRANSFER: 25972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "End Transfer"; 26072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_UPDATETRANSFER: 26172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Update Transfer"; 26272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_STARTTRANSFER: 26372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Start Transfer"; 26472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_CLEARSTALL: 26572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Clear Stall"; 26672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETSTALL: 26772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Stall"; 26872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_GETSEQNUMBER: 26972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Get Data Sequence Number"; 27072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETTRANSFRESOURCE: 27172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Endpoint Transfer Resource"; 27272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_SETEPCONFIG: 27372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "Set Endpoint Configuration"; 27472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 27572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return "UNKNOWN command"; 27672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 27772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 27872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 279b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbiint dwc3_send_gadget_generic_command(struct dwc3 *dwc, int cmd, u32 param) 280b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi{ 281b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi u32 timeout = 500; 282b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi u32 reg; 283b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi 284b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi dwc3_writel(dwc->regs, DWC3_DGCMDPAR, param); 285b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi dwc3_writel(dwc->regs, DWC3_DGCMD, cmd | DWC3_DGCMD_CMDACT); 286b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi 287b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi do { 288b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DGCMD); 289b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi if (!(reg & DWC3_DGCMD_CMDACT)) { 290b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi dev_vdbg(dwc->dev, "Command Complete --> %d\n", 291b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi DWC3_DGCMD_STATUS(reg)); 292b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi return 0; 293b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi } 294b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi 295b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi /* 296b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi * We can't sleep here, because it's also called from 297b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi * interrupt context. 298b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi */ 299b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi timeout--; 300b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi if (!timeout) 301b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi return -ETIMEDOUT; 302b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi udelay(1); 303b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi } while (1); 304b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi} 305b09bb64239c83113b8b35fa6a1ecae43d8297eaaFelipe Balbi 30672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, 30772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned cmd, struct dwc3_gadget_ep_cmd_params *params) 30872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 30972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = dwc->eps[ep]; 31061d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior u32 timeout = 500; 31172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 31272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 31372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: cmd '%s' params %08x %08x %08x\n", 31472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, 315dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_gadget_ep_cmd_string(cmd), params->param0, 316dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params->param1, params->param2); 31772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 318dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0); 319dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1); 320dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMDPAR2(ep), params->param2); 32172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 32272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEPCMD(ep), cmd | DWC3_DEPCMD_CMDACT); 32372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 32472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DEPCMD(ep)); 32572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(reg & DWC3_DEPCMD_CMDACT)) { 326164f6e141ed214bda30fb219d41ec3254bd90886Felipe Balbi dev_vdbg(dwc->dev, "Command Complete --> %d\n", 327164f6e141ed214bda30fb219d41ec3254bd90886Felipe Balbi DWC3_DEPCMD_STATUS(reg)); 32872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 32972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 33072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 33272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We can't sleep here, because it is also called from 33372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * interrupt context. 33472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 33572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout--; 33672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!timeout) 33772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ETIMEDOUT; 33872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 33961d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior udelay(1); 34072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 34172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 34272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep, 344f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi struct dwc3_trb *trb) 34572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 346c439ef87c33a1df30f528cb152151465c2529cacPaul Zimmerman u32 offset = (char *) trb - (char *) dep->trb_pool; 34772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 34872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dep->trb_pool_dma + offset; 34972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 35072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 35172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_alloc_trb_pool(struct dwc3_ep *dep) 35272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 35372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 35472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 35572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->trb_pool) 35672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 35772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 35872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number == 0 || dep->number == 1) 35972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 36072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 36172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool = dma_alloc_coherent(dwc->dev, 36272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi sizeof(struct dwc3_trb) * DWC3_TRB_NUM, 36372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dep->trb_pool_dma, GFP_KERNEL); 36472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep->trb_pool) { 36572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dep->dwc->dev, "failed to allocate trb pool for %s\n", 36672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 36772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ENOMEM; 36872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 36972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 37172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 37272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_free_trb_pool(struct dwc3_ep *dep) 37472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 37572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 37672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 37772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(struct dwc3_trb) * DWC3_TRB_NUM, 37872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool, dep->trb_pool_dma); 37972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 38072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool = NULL; 38172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->trb_pool_dma = 0; 38272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 38372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 38472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep) 38572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 38672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 38772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 38872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 38972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 39072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 39172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->number != 1) { 39272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_DEPSTARTCFG; 39372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* XferRscIdx == 0 for ep0 and 2 for the remaining */ 394b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman if (dep->number > 1) { 395b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman if (dwc->start_config_issued) 396b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman return 0; 397b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = true; 39872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(2); 399b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman } 40072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, ¶ms); 40272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 40372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 40572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 40672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 40772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep, 408c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_endpoint_descriptor *desc, 409c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_ss_ep_comp_descriptor *comp_desc) 41072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 41172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 41272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 41372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 41472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 415dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 = DWC3_DEPCFG_EP_TYPE(usb_endpoint_type(desc)) 416dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_MAX_PACKET_SIZE(usb_endpoint_maxp(desc)) 417dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_BURST_SIZE(dep->endpoint.maxburst); 41872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 419dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 = DWC3_DEPCFG_XFER_COMPLETE_EN 420dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_XFER_NOT_READY_EN; 42172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 42218b7ede5f7ee2092aedcb578d3ac30bd5d4fc23cFelipe Balbi if (usb_ss_max_streams(comp_desc) && usb_endpoint_xfer_bulk(desc)) { 423dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_STREAM_CAPABLE 424dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi | DWC3_DEPCFG_STREAM_EVENT_EN; 425879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->stream_capable = true; 426879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi } 427879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 42872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (usb_endpoint_xfer_isoc(desc)) 429dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_XFER_IN_PROGRESS_EN; 43072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 43172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 43272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We are doing 1:1 mapping for endpoints, meaning 43372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Physical Endpoints 2 maps to Logical Endpoint 2 and 43472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * so on. We consider the direction bit as part of the physical 43572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * endpoint number. So USB endpoint 0x81 is 0x03. 43672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 437dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_EP_NUMBER(dep->number); 43872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 43972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 44072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We must use the lower 16 TX FIFOs even though 44172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * HW might have more 44272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 44372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->direction) 444dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 |= DWC3_DEPCFG_FIFO_NUMBER(dep->number >> 1); 44572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 44672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (desc->bInterval) { 447dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(desc->bInterval - 1); 44872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->interval = 1 << (desc->bInterval - 1); 44972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 45072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, dep->number, 45272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETEPCONFIG, ¶ms); 45372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 45472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep) 45672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 45772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 45872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 45972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 46072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 461dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 = DWC3_DEPXFERCFG_NUM_XFER_RES(1); 46272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_send_gadget_ep_cmd(dwc, dep->number, 46472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETTRANSFRESOURCE, ¶ms); 46572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 46672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 46772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 46872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * __dwc3_gadget_ep_enable - Initializes a HW endpoint 46972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: endpoint to be initialized 47072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @desc: USB Endpoint Descriptor 47172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 47272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Caller should take care of locking 47372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 47472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, 475c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_endpoint_descriptor *desc, 476c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi const struct usb_ss_ep_comp_descriptor *comp_desc) 47772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 47872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 47972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 48072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = -ENOMEM; 48172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 48272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 48372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_start_config(dwc, dep); 48472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 48572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 48672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 48772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 488c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = dwc3_gadget_set_ep_config(dwc, dep, desc, comp_desc); 48972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 49072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 49172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 49272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 493f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi struct dwc3_trb *trb_st_hw; 494f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi struct dwc3_trb *trb_link; 49572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 49672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_set_xfer_resource(dwc, dep); 49772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 49872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 49972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 50016e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz dep->endpoint.desc = desc; 501c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi dep->comp_desc = comp_desc; 50272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->type = usb_endpoint_type(desc); 50372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_ENABLED; 50472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 50572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); 50672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_DALEPENA_EP(dep->number); 50772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); 50872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 50972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb_endpoint_xfer_isoc(desc)) 51072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 51172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 51272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(&trb_link, 0, sizeof(trb_link)); 51372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 5141d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman /* Link TRB for ISOC. The HWO bit is never reset */ 51572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trb_st_hw = &dep->trb_pool[0]; 51672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 517f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb_link = &dep->trb_pool[DWC3_TRB_NUM - 1]; 51872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 519f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb_link->bpl = lower_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw)); 520f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb_link->bph = upper_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw)); 521f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb_link->ctrl |= DWC3_TRBCTL_LINK_TRB; 522f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb_link->ctrl |= DWC3_TRB_CTRL_HWO; 52372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 52472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 52572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 52672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 52772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 528624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewiorstatic void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum); 529624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewiorstatic void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep) 53072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 53172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 53272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 533624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior if (!list_empty(&dep->req_queued)) 534624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_stop_active_transfer(dwc, dep->number); 535624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior 53672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (!list_empty(&dep->request_list)) { 53772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->request_list); 53872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 539624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_gadget_giveback(dep, req, -ESHUTDOWN); 54072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 54172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 54272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 54372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 54472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * __dwc3_gadget_ep_disable - Disables a HW endpoint 54572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: the endpoint to disable 54672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 547624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * This function also removes requests which are currently processed ny the 548624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * hardware and those which are not yet scheduled. 549624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior * Caller should take care of locking. 55072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 55172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) 55272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 55372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 55472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 55572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 556624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_remove_requests(dwc, dep); 55772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 55872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); 55972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DALEPENA_EP(dep->number); 56072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); 56172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 562879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->stream_capable = false; 563f9c56cdd3905c96c600456203637bd7ec8ec6383Ido Shayevitz dep->endpoint.desc = NULL; 564c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi dep->comp_desc = NULL; 56572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->type = 0; 566879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->flags = 0; 56772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 56872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 56972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 57072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 57172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 57272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 57372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep0_enable(struct usb_ep *ep, 57472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 57572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 57672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 57772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 57872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 57972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep0_disable(struct usb_ep *ep) 58072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 58172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 58272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 58372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 58472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 58572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 58672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_enable(struct usb_ep *ep, 58772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct usb_endpoint_descriptor *desc) 58872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 58972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 59072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc; 59172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 59272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 59372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 59472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) { 59572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: invalid parameters\n"); 59672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 59772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 59872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 59972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!desc->wMaxPacketSize) { 60072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: missing wMaxPacketSize\n"); 60172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 60272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 60372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 60472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = to_dwc3_ep(ep); 60572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc = dep->dwc; 60672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 60772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (usb_endpoint_type(desc)) { 60872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_CONTROL: 60927a78d6a283d6782438f72306746afe4bf44c215Anton Tikhomirov strlcat(dep->name, "-control", sizeof(dep->name)); 61072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 61172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_ISOC: 61227a78d6a283d6782438f72306746afe4bf44c215Anton Tikhomirov strlcat(dep->name, "-isoc", sizeof(dep->name)); 61372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 61472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_BULK: 61527a78d6a283d6782438f72306746afe4bf44c215Anton Tikhomirov strlcat(dep->name, "-bulk", sizeof(dep->name)); 61672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 61772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_ENDPOINT_XFER_INT: 61827a78d6a283d6782438f72306746afe4bf44c215Anton Tikhomirov strlcat(dep->name, "-int", sizeof(dep->name)); 61972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 62072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 62172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "invalid endpoint transfer type\n"); 62272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 62372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 62472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->flags & DWC3_EP_ENABLED) { 62572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_WARN_ONCE(dwc->dev, true, "%s is already enabled\n", 62672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 62772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 62872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 62972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Enabling %s\n", dep->name); 63172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 633c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, desc, ep->comp_desc); 63472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 63572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 63772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 63872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 63972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_disable(struct usb_ep *ep) 64072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 64172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 64272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc; 64372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 64472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 64572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 64672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ep) { 64772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi pr_debug("dwc3: invalid parameters\n"); 64872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EINVAL; 64972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 65072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 65172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = to_dwc3_ep(ep); 65272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc = dep->dwc; 65372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 65472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) { 65572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_WARN_ONCE(dwc->dev, true, "%s is already disabled\n", 65672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 65772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 65872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 65972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 66072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi snprintf(dep->name, sizeof(dep->name), "ep%d%s", 66172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number >> 1, 66272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi (dep->number & 1) ? "in" : "out"); 66372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 66472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 66572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_disable(dep); 66672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 66772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 66872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 66972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 67072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 67172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, 67272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi gfp_t gfp_flags) 67372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 67472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 67572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 67672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 67772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 67872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = kzalloc(sizeof(*req), gfp_flags); 67972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) { 68072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "not enough memory\n"); 68172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return NULL; 68272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 68372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 68472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->epnum = dep->number; 68572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->dep = dep; 68672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 68772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return &req->request; 68872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 68972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 69072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_ep_free_request(struct usb_ep *ep, 69172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_request *request) 69272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 69372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 69472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 69572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi kfree(req); 69672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 69772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 698c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi/** 699c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * dwc3_prepare_one_trb - setup one TRB from one request 700c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * @dep: endpoint for which this request is prepared 701c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * @req: dwc3_request pointer 702c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi */ 70368e823e24aea5227eaf20d6435485e733109d113Felipe Balbistatic void dwc3_prepare_one_trb(struct dwc3_ep *dep, 704eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct dwc3_request *req, dma_addr_t dma, 705eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi unsigned length, unsigned last, unsigned chain) 706c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi{ 707eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct dwc3 *dwc = dep->dwc; 708f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi struct dwc3_trb *trb; 709c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 710c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi unsigned int cur_slot; 711c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 712eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dev_vdbg(dwc->dev, "%s: req %p dma %08llx length %d%s%s\n", 713eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dep->name, req, (unsigned long long) dma, 714eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi length, last ? " last" : "", 715eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi chain ? " chain" : ""); 716eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi 717f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK]; 718c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi cur_slot = dep->free_slot; 719c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi dep->free_slot++; 720c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 721c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi /* Skip the LINK-TRB on ISOC */ 722c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi if (((cur_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && 72316e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz usb_endpoint_xfer_isoc(dep->endpoint.desc)) 72468e823e24aea5227eaf20d6435485e733109d113Felipe Balbi return; 725c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 726eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (!req->trb) { 727eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc3_gadget_move_request_queued(req); 728f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi req->trb = trb; 729f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi req->trb_dma = dwc3_trb_dma_offset(dep, trb); 730eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 731c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 732f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->size = DWC3_TRB_SIZE_LENGTH(length); 733f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->bpl = lower_32_bits(dma); 734f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->bph = upper_32_bits(dma); 735c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 73616e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz switch (usb_endpoint_type(dep->endpoint.desc)) { 737c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_CONTROL: 738f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP; 739c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi break; 740c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 741c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_ISOC: 742f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; 743c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 744c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi /* IOC every DWC3_TRB_NUM / 4 so we can refill */ 745c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi if (!(cur_slot % (DWC3_TRB_NUM / 4))) 746f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_IOC; 747c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi break; 748c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 749c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_BULK: 750c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi case USB_ENDPOINT_XFER_INT: 751f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl = DWC3_TRBCTL_NORMAL; 752c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi break; 753c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi default: 754c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi /* 755c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * This is only possible with faulty memory because we 756c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi * checked it already :) 757c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi */ 758c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi BUG(); 759c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi } 760c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 76116e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 762f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI; 763f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_CSP; 764f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi } else { 765f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi if (chain) 766f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_CHN; 767f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi 768f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi if (last) 769f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_LST; 770f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi } 771c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 77216e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable) 773f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id); 774c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 775f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb->ctrl |= DWC3_TRB_CTRL_HWO; 776c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi} 777c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 77872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* 77972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * dwc3_prepare_trbs - setup TRBs from requests 78072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @dep: endpoint for which requests are being prepared 78172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * @starting: true if the endpoint is idle and no requests are queued. 78272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 7831d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * The function goes through the requests list and sets up TRBs for the 7841d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * transfers. The function returns once there are no more TRBs available or 7851d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * it runs out of requests. 78672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 78768e823e24aea5227eaf20d6435485e733109d113Felipe Balbistatic void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting) 78872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 78968e823e24aea5227eaf20d6435485e733109d113Felipe Balbi struct dwc3_request *req, *n; 79072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 trbs_left; 7918d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman u32 max; 792c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi unsigned int last_one = 0; 79372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 79472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM); 79572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 79672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* the first request must not be queued */ 79772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK; 798c71fc37c191747ea1f00424e84f96c1f88e52bfcFelipe Balbi 7998d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman /* Can't wrap around on a non-isoc EP since there's no link TRB */ 80016e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 8018d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman max = DWC3_TRB_NUM - (dep->free_slot & DWC3_TRB_MASK); 8028d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman if (trbs_left > max) 8038d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman trbs_left = max; 8048d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman } 8058d62cd65d74d0e241b3a152f7347bb66126b705bPaul Zimmerman 80672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 8071d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * If busy & slot are equal than it is either full or empty. If we are 8081d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * starting to process requests then we are empty. Otherwise we are 80972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * full and don't do anything 81072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 81172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!trbs_left) { 81272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!starting) 81368e823e24aea5227eaf20d6435485e733109d113Felipe Balbi return; 81472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi trbs_left = DWC3_TRB_NUM; 81572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 81672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In case we start from scratch, we queue the ISOC requests 81772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * starting from slot 1. This is done because we use ring 81872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * buffer and have no LST bit to stop us. Instead, we place 8191d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * IOC bit every TRB_NUM/4. We try to avoid having an interrupt 82072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * after the first request so we start at slot 1 and have 82172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 7 requests proceed before we hit the first IOC. 82272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Other transfer types don't use the ring buffer and are 82372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * processed from the first TRB until the last one. Since we 82472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * don't wrap around we have to start at the beginning. 82572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 82616e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 82772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot = 1; 82872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot = 1; 82972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 83072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->busy_slot = 0; 83172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->free_slot = 0; 83272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 83372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 83472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* The last TRB is a link TRB, not used for xfer */ 83616e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if ((trbs_left <= 1) && usb_endpoint_xfer_isoc(dep->endpoint.desc)) 83768e823e24aea5227eaf20d6435485e733109d113Felipe Balbi return; 83872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 83972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry_safe(req, n, &dep->request_list, list) { 840eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi unsigned length; 841eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma_addr_t dma; 84272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 843eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (req->request.num_mapped_sgs > 0) { 844eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct usb_request *request = &req->request; 845eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct scatterlist *sg = request->sg; 846eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi struct scatterlist *s; 847eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi int i; 84872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 849eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi for_each_sg(sg, s, request->num_mapped_sgs, i) { 850eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi unsigned chain = true; 85172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 852eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi length = sg_dma_len(s); 853eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma = sg_dma_address(s); 85472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 8551d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman if (i == (request->num_mapped_sgs - 1) || 8561d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman sg_is_last(s)) { 857eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = true; 858eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi chain = false; 859eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 86072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 861eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trbs_left--; 862eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (!trbs_left) 863eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = true; 86472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 865eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (last_one) 866eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi chain = false; 86772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 868eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc3_prepare_one_trb(dep, req, dma, length, 869eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one, chain); 87072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 871eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (last_one) 872eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi break; 873eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi } 87472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 875eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dma = req->request.dma; 876eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi length = req->request.length; 877eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi trbs_left--; 87872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 879eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (!trbs_left) 880eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = 1; 881879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 882eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi /* Is this the last request? */ 883eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (list_is_last(&req->list, &dep->request_list)) 884eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one = 1; 88572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 886eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc3_prepare_one_trb(dep, req, dma, length, 887eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi last_one, false); 88872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 889eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi if (last_one) 890eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi break; 89172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 89272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 89372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 89472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 89572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, 89672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_new) 89772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 89872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 89972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 90072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 90172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 90272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 90372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 90472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new && (dep->flags & DWC3_EP_BUSY)) { 90572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: endpoint busy\n", dep->name); 90672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -EBUSY; 90772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 90872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_PENDING_REQUEST; 90972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 91172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * If we are getting here after a short-out-packet we don't enqueue any 91272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * new requests as we try to set the IOC bit only on the last request. 91372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 91472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new) { 91572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->req_queued)) 91672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_prepare_trbs(dep, start_new); 91772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 91872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* req points to the first request which will be sent */ 91972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->req_queued); 92072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 92168e823e24aea5227eaf20d6435485e733109d113Felipe Balbi dwc3_prepare_trbs(dep, start_new); 92268e823e24aea5227eaf20d6435485e733109d113Felipe Balbi 92372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 9241d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * req points to the first request where HWO changed from 0 to 1 92572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 92668e823e24aea5227eaf20d6435485e733109d113Felipe Balbi req = next_request(&dep->req_queued); 92772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 92872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!req) { 92972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_PENDING_REQUEST; 93072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 93172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 93272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 934dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param0 = upper_32_bits(req->trb_dma); 935dc1c70a774b6fe3744b330d58bb9cf802f7eac89Felipe Balbi params.param1 = lower_32_bits(req->trb_dma); 93672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 93772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (start_new) 93872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_STARTTRANSFER; 93972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 94072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_UPDATETRANSFER; 94172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 94272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(cmd_param); 94372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); 94472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret < 0) { 94572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "failed to send STARTTRANSFER command\n"); 94672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 94772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 94872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * FIXME we need to iterate over the list of requests 94972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * here and stop, unmap, free and del each of the linked 9501d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * requests instead of what we do now. 95172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 9520fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi usb_gadget_unmap_request(&dwc->gadget, &req->request, 9530fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi req->direction); 95472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&req->list); 95572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 95672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 95772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 95872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_BUSY; 95925b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi 960f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman if (start_new) { 961f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman dep->res_trans_idx = dwc3_gadget_ep_get_transfer_index(dwc, 962f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman dep->number); 963f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman WARN_ON_ONCE(!dep->res_trans_idx); 964f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman } 96525b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi 96672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 96772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 96872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 96972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) 97072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 9710fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi struct dwc3 *dwc = dep->dwc; 9720fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi int ret; 9730fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi 97472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.actual = 0; 97572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.status = -EINPROGRESS; 97672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->direction = dep->direction; 97772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->epnum = dep->number; 97872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 97972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 98072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We only add to our list of requests now and 98172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * start consuming the list once we get XferNotReady 98272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * IRQ. 98372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 98472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * That way, we avoid doing anything that we don't need 98572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * to do now and defer it until the point we receive a 98672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * particular token from the Host side. 98772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 98872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * This will also avoid Host cancelling URBs due to too 9891d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * many NAKs. 99072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 9910fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi ret = usb_gadget_map_request(&dwc->gadget, &req->request, 9920fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi dep->direction); 9930fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi if (ret) 9940fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi return ret; 9950fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi 99672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_add_tail(&req->list, &dep->request_list); 99772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 99823063b378de734383c9f42de770b01cd661cd9b4Greg Kroah-Hartman if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && (dep->flags & DWC3_EP_BUSY)) 999f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman dep->flags |= DWC3_EP_PENDING_REQUEST; 1000f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman 100172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 1002f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * There are two special cases: 100372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 1004f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * 1. XferNotReady with empty list of requests. We need to kick the 1005f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * transfer here in that situation, otherwise we will be NAKing 1006f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * forever. If we get XferNotReady before gadget driver has a 1007f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * chance to queue a request, we will ACK the IRQ but won't be 1008f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * able to receive the data until the next request is queued. 1009f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * The following code is handling exactly that. 101072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 1011f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * 2. XferInProgress on Isoc EP with an active transfer. We need to 1012f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * kick the transfer here after queuing a request, otherwise the 1013f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman * core may not see the modified TRB(s). 101472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 101572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->flags & DWC3_EP_PENDING_REQUEST) { 1016f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman int ret; 1017f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman int start_trans = 1; 1018f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman u8 trans_idx = dep->res_trans_idx; 101972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 102016e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && 1021f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman (dep->flags & DWC3_EP_BUSY)) { 102272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi start_trans = 0; 1023f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman WARN_ON_ONCE(!trans_idx); 1024f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman } else { 1025f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman trans_idx = 0; 1026f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman } 102772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1028f898ae09a043cf9c3c4be82c04e08fcf00fe82c1Paul Zimmerman ret = __dwc3_gadget_kick_transfer(dep, trans_idx, start_trans); 102972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret && ret != -EBUSY) { 103072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 103172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s: failed to kick transfers\n", 103372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 103472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 103572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi }; 103672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 103772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 103872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 103972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, 104172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi gfp_t gfp_flags) 104272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 104372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 104472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 104572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 104672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 104872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 104972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 105072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 105116e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (!dep->endpoint.desc) { 105272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n", 105372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name); 105472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ESHUTDOWN; 105572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 105672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 105772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "queing request %p to %s length %d\n", 105872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name, request->length); 105972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 106172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_queue(dep, req); 106272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 106372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 106572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 106672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 106772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_dequeue(struct usb_ep *ep, 106872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_request *request) 106972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 107072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req = to_dwc3_request(request); 107172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *r = NULL; 107272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 107472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 107572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 107772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 107872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 107972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 108072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 108172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry(r, &dep->request_list, list) { 108272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) 108372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 108472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 108572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 108672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r != req) { 108772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_for_each_entry(r, &dep->req_queued, list) { 108872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) 108972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 109072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 109172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (r == req) { 109272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* wait until it is processed */ 109372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfer(dwc, dep->number); 1094e8d4e8be860d935099ffcf695dcd29b55ae50b36Pratyush Anand goto out1; 109572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 109672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "request %p was not queued to %s\n", 109772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi request, ep->name); 109872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 109972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out0; 110072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 110172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1102e8d4e8be860d935099ffcf695dcd29b55ae50b36Pratyush Anandout1: 110372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* giveback the request */ 110472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_giveback(dep, req, -ECONNRESET); 110572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 110672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout0: 110772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 110872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 110972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 111072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 111172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 111272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value) 111372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 111472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 111572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 111672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 111772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 111872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 111972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 112072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (value) { 11210b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi if (dep->number == 0 || dep->number == 1) { 11220b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi /* 11230b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi * Whenever EP0 is stalled, we will restart 11240b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi * the state machine, thus moving back to 11250b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi * Setup Phase 11260b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi */ 11270b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi dwc->ep0state = EP0_SETUP_PHASE; 11280b7836a9eb32f626ffd3fe3045e8c618cb8ed965Felipe Balbi } 112972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 113072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 113172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_SETSTALL, ¶ms); 113272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 113372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to %s STALL on %s\n", 113472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi value ? "set" : "clear", 113572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 113672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 113772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_STALL; 113872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 11395275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman if (dep->flags & DWC3_EP_WEDGE) 11405275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman return 0; 11415275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman 114272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 114372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_CLEARSTALL, ¶ms); 114472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 114572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to %s STALL on %s\n", 114672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi value ? "set" : "clear", 114772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 114872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 114972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_STALL; 115072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 11515275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman 115272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 115372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 115472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 115572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_set_halt(struct usb_ep *ep, int value) 115672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 115772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 115872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 115972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 116172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 116372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 116572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 116616e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 116772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s is of Isochronous type\n", dep->name); 116872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 116972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 117072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 117172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_ep_set_halt(dep, value); 117372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout: 117472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 117572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 117772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 117872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 117972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_ep_set_wedge(struct usb_ep *ep) 118072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 118172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep = to_dwc3_ep(ep); 1182249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman struct dwc3 *dwc = dep->dwc; 1183249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman unsigned long flags; 118472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1185249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman spin_lock_irqsave(&dwc->lock, flags); 118672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags |= DWC3_EP_WEDGE; 1187249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman spin_unlock_irqrestore(&dwc->lock, flags); 118872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 11895275455a6e6ae6b57303834b0afd267bb9657ffcPaul Zimmerman return dwc3_gadget_ep_set_halt(ep, 1); 119072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 119172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 119272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 119372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 119472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic struct usb_endpoint_descriptor dwc3_gadget_ep0_desc = { 119572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bLength = USB_DT_ENDPOINT_SIZE, 119672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bDescriptorType = USB_DT_ENDPOINT, 119772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .bmAttributes = USB_ENDPOINT_XFER_CONTROL, 119872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 119972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 120072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_ep_ops dwc3_gadget_ep0_ops = { 120172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .enable = dwc3_gadget_ep0_enable, 120272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .disable = dwc3_gadget_ep0_disable, 120372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .alloc_request = dwc3_gadget_ep_alloc_request, 120472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .free_request = dwc3_gadget_ep_free_request, 120572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .queue = dwc3_gadget_ep0_queue, 120672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .dequeue = dwc3_gadget_ep_dequeue, 120772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_halt = dwc3_gadget_ep_set_halt, 120872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_wedge = dwc3_gadget_ep_set_wedge, 120972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 121072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 121172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_ep_ops dwc3_gadget_ep_ops = { 121272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .enable = dwc3_gadget_ep_enable, 121372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .disable = dwc3_gadget_ep_disable, 121472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .alloc_request = dwc3_gadget_ep_alloc_request, 121572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .free_request = dwc3_gadget_ep_free_request, 121672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .queue = dwc3_gadget_ep_queue, 121772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .dequeue = dwc3_gadget_ep_dequeue, 121872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_halt = dwc3_gadget_ep_set_halt, 121972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_wedge = dwc3_gadget_ep_set_wedge, 122072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 122172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 122372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_get_frame(struct usb_gadget *g) 122572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 122672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 122772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 122872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 122972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 123072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return DWC3_DSTS_SOFFN(reg); 123172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 123272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 123372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_wakeup(struct usb_gadget *g) 123472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 123572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 123672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 123772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long timeout; 123872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 123972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 124172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 124372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 link_state; 124572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 speed; 124672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 124872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 124972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 125072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * According to the Databook Remote wakeup request should 125172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * be issued only when the device is in early suspend state. 125272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 125372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We can check that via USB Link State bits in DSTS register. 125472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 125572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 125672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 125772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi speed = reg & DWC3_DSTS_CONNECTSPD; 125872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (speed == DWC3_DSTS_SUPERSPEED) { 125972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "no wakeup on SuperSpeed\n"); 126072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 126172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 126272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 126372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 126472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi link_state = DWC3_DSTS_USBLNKST(reg); 126572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 126672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (link_state) { 126772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_LINK_STATE_RX_DET: /* in HS, means Early Suspend */ 126872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_LINK_STATE_U3: /* in HS, means SUSPEND */ 126972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 127072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 127172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "can't wakeup from link state %d\n", 127272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi link_state); 127372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 127472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto out; 127572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 127672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12778598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi ret = dwc3_gadget_set_link_state(dwc, DWC3_LINK_STATE_RECOV); 12788598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi if (ret < 0) { 12798598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi dev_err(dwc->dev, "failed to put link in Recovery\n"); 12808598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi goto out; 12818598bde7fa125e85bc97decd6513d37dcf1e7bd9Felipe Balbi } 128272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 128372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* write zeroes to Link Change Request */ 128472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; 128572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 128672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12871d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman /* poll until Link State changes to ON */ 128872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout = jiffies + msecs_to_jiffies(100); 128972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 12901d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman while (!time_after(jiffies, timeout)) { 129172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 129272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* in HS, means ON */ 129472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) == DWC3_LINK_STATE_U0) 129572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 129672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 129772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 129872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (DWC3_DSTS_USBLNKST(reg) != DWC3_LINK_STATE_U0) { 129972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to send remote wakeup\n"); 130072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EINVAL; 130172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 130272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 130372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiout: 130472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 130572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 130672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 130772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 130872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 130972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_set_selfpowered(struct usb_gadget *g, 131072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int is_selfpowered) 131172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 131272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 1313249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman unsigned long flags; 131472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1315249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman spin_lock_irqsave(&dwc->lock, flags); 131672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->is_selfpowered = !!is_selfpowered; 1317249a456930cd2df29d085fb738b0e8f4bc1680cfPaul Zimmerman spin_unlock_irqrestore(&dwc->lock, flags); 131872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 131972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 132072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 132172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 132272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on) 132372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 132472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 132561d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior u32 timeout = 500; 132672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 132772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 13288db7ed15f2557e26371e4b2d98fee290d992b715Felipe Balbi if (is_on) { 13298db7ed15f2557e26371e4b2d98fee290d992b715Felipe Balbi reg &= ~DWC3_DCTL_TRGTULST_MASK; 13308db7ed15f2557e26371e4b2d98fee290d992b715Felipe Balbi reg |= (DWC3_DCTL_RUN_STOP 13318db7ed15f2557e26371e4b2d98fee290d992b715Felipe Balbi | DWC3_DCTL_TRGTULST_RX_DET); 13328db7ed15f2557e26371e4b2d98fee290d992b715Felipe Balbi } else { 133372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_RUN_STOP; 13348db7ed15f2557e26371e4b2d98fee290d992b715Felipe Balbi } 133572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 133672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 133772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 133872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 133972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 134072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (is_on) { 134172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(reg & DWC3_DSTS_DEVCTRLHLT)) 134272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 134372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 134472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (reg & DWC3_DSTS_DEVCTRLHLT) 134572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 134672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 134772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi timeout--; 134872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!timeout) 134972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 135061d58242f634642de42d6a4098913b7254a65053Sebastian Andrzej Siewior udelay(1); 135172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 135272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 135372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "gadget %s data soft-%s\n", 135472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver 135572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? dwc->gadget_driver->function : "no-function", 135672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi is_on ? "connect" : "disconnect"); 135772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 135872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 135972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) 136072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 136172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 136272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 136372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi is_on = !!is_on; 136572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 136672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 136772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_run_stop(dwc, is_on); 136872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 136972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 137072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 137172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 137272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 137372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_start(struct usb_gadget *g, 137472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_gadget_driver *driver) 137572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 137672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 137772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 137872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 137972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret = 0; 138072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 138172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 138272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 138372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 138472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget_driver) { 138572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s is already bound to %s\n", 138672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.name, 138772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->driver.name); 138872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -EBUSY; 138972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 139072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 139172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 139272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver = driver; 139372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.driver = &driver->driver; 139472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 139572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCFG); 139672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~(DWC3_DCFG_SPEED_MASK); 139707e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi 139807e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi /** 139907e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * WORKAROUND: DWC3 revision < 2.20a have an issue 140007e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * which would cause metastability state on Run/Stop 140107e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * bit if we try to force the IP to USB2-only mode. 140207e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * 140307e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * Because of that, we cannot configure the IP to any 140407e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * speed other than the SuperSpeed 140507e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * 140607e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * Refers to: 140707e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * 140807e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * STAR#9000525659: Clock Domain Crossing on DCTL in 140907e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi * USB 2.0 Mode 141007e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi */ 141107e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi if (dwc->revision < DWC3_REVISION_220A) 141207e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi reg |= DWC3_DCFG_SUPERSPEED; 141307e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi else 141407e7f47b6d8da3e290f90615c9a74dff0115709eFelipe Balbi reg |= dwc->maximum_speed; 141572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCFG, reg); 141672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1417b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = false; 1418b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman 141972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Start with SuperSpeed Default */ 142072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); 142172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 142272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[0]; 1423c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 142472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 142572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 142672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 142772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 142872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 142972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[1]; 1430c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 143172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 143272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 143372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err1; 143472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 143572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 143672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* begin to receive SETUP packets */ 1437c7fcdeb2627c46b7ec3f0bcb2054b10405f9a70eFelipe Balbi dwc->ep0state = EP0_SETUP_PHASE; 143872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep0_out_start(dwc); 143972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 144172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 144372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr1: 144572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[0]); 144672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 144772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr0: 144872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 144972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 145172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 145272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_gadget_stop(struct usb_gadget *g, 145472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct usb_gadget_driver *driver) 145572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 145672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = gadget_to_dwc(g); 145772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned long flags; 145872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 145972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock_irqsave(&dwc->lock, flags); 146072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 146172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[0]); 146272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_ep_disable(dwc->eps[1]); 146372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 146472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver = NULL; 146572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.driver = NULL; 146672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 146772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock_irqrestore(&dwc->lock, flags); 146872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 146972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 147072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 147172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic const struct usb_gadget_ops dwc3_gadget_ops = { 147272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .get_frame = dwc3_gadget_get_frame, 147372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .wakeup = dwc3_gadget_wakeup, 147472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .set_selfpowered = dwc3_gadget_set_selfpowered, 147572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .pullup = dwc3_gadget_pullup, 147672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .udc_start = dwc3_gadget_start, 147772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi .udc_stop = dwc3_gadget_stop, 147872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi}; 147972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 148172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int __devinit dwc3_gadget_init_endpoints(struct dwc3 *dwc) 148372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 148472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 148572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum; 148672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dwc->gadget.ep_list); 148872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 148972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 149072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = kzalloc(sizeof(*dep), GFP_KERNEL); 149172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dep) { 149272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "can't allocate endpoint %d\n", 149372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi epnum); 149472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return -ENOMEM; 149572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 149672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 149772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->dwc = dwc; 149872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->number = epnum; 149972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->eps[epnum] = dep; 150072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 150172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1, 150272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi (epnum & 1) ? "in" : "out"); 150372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.name = dep->name; 150472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->direction = (epnum & 1); 150572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 150672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum == 0 || epnum == 1) { 150772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.maxpacket = 512; 150872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.ops = &dwc3_gadget_ep0_ops; 150972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!epnum) 151072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0 = &dep->endpoint; 151172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 151272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 151372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 151472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.maxpacket = 1024; 151512d36c16bde3ee0643d705caa87723de536dbe49Sebastian Andrzej Siewior dep->endpoint.max_streams = 15; 151672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->endpoint.ops = &dwc3_gadget_ep_ops; 151772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_add_tail(&dep->endpoint.ep_list, 151872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->gadget.ep_list); 151972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 152072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_alloc_trb_pool(dep); 152125b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi if (ret) 152272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 152372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 152425b8ff68bf1d4954d4a9dcb4862c6b6a53cb09e2Felipe Balbi 152572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dep->request_list); 152672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi INIT_LIST_HEAD(&dep->req_queued); 152772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 152872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 152972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 153072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 153172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 153272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_free_endpoints(struct dwc3 *dwc) 153372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 153472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 153572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum; 153672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 153772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 153872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 153972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_free_trb_pool(dep); 154072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 154172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum != 0 && epnum != 1) 154272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi list_del(&dep->endpoint.ep_list); 154372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 154472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi kfree(dep); 154572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 154672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 154772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 154872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_release(struct device *dev) 154972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 155072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dev, "%s\n", __func__); 155172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 155272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 155372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/* -------------------------------------------------------------------------- */ 155472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, 155572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event, int status) 155672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 155772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_request *req; 1558f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi struct dwc3_trb *trb; 155972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int count; 156072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int s_pkt = 0; 156172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 156272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi do { 156372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req = next_request(&dep->req_queued); 1564d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior if (!req) { 1565d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior WARN_ON_ONCE(1); 1566d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior return 1; 1567d39ee7be2aaf0a53d7b5f43c13571bac95f7cc0cSebastian Andrzej Siewior } 156872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1569f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi trb = req->trb; 157072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1571f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) 15720d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior /* 15730d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * We continue despite the error. There is not much we 15741d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * can do. If we don't clean it up we loop forever. If 15751d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * we skip the TRB then it gets overwritten after a 15761d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * while since we use them in a ring buffer. A BUG() 15771d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * would help. Lets hope that if this occurs, someone 15780d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior * fixes the root cause instead of looking away :) 15790d2f4758530d1598087d1d2f3e75b4f7d17fc6c7Sebastian Andrzej Siewior */ 158072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n", 158172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name, req->trb); 1582f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi count = trb->size & DWC3_TRB_SIZE_MASK; 158372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 158472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->direction) { 158572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (count) { 158672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "incomplete IN transfer %s\n", 158772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 158872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = -ECONNRESET; 158972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 159072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 159172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (count && (event->status & DEPEVT_STATUS_SHORT)) 159272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi s_pkt = 1; 159372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 159472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 159572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 159672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We assume here we will always receive the entire data block 159772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * which we should receive. Meaning, if we program RX to 159872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * receive 4K but we receive only 2K, we assume that's all we 159972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * should receive and we simply bounce the request back to the 160072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * gadget driver for further processing. 160172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 160272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi req->request.actual += req->request.length - count; 160372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_giveback(dep, req, status); 160472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (s_pkt) 160572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 1606f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi if ((event->status & DEPEVT_STATUS_LST) && 1607f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi (trb->ctrl & DWC3_TRB_CTRL_LST)) 160872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 1609f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi if ((event->status & DEPEVT_STATUS_IOC) && 1610f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi (trb->ctrl & DWC3_TRB_CTRL_IOC)) 161172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 161272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } while (1); 161372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1614f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi if ((event->status & DEPEVT_STATUS_IOC) && 1615f6bafc6a1c9d58f0c234ac5052b9c09b0747348cFelipe Balbi (trb->ctrl & DWC3_TRB_CTRL_IOC)) 161672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 161772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 1; 161872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 161972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 162072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, 162172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep, const struct dwc3_event_depevt *event, 162272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int start_new) 162372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 162472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned status = 0; 162572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int clean_busy; 162672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 162772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->status & DEPEVT_STATUS_BUSERR) 162872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = -ECONNRESET; 162972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 16301d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status); 1631c2df85ca31645ed3c68c56bd30a3673e034224f1Paul Zimmerman if (clean_busy) 163272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_BUSY; 1633fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1634fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi /* 1635fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround. 1636fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * See dwc3_gadget_linksts_change_interrupt() for 1st half. 1637fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi */ 1638fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (dwc->revision < DWC3_REVISION_183A) { 1639fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u32 reg; 1640fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi int i; 1641fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1642fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) { 1643fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi struct dwc3_ep *dep = dwc->eps[i]; 1644fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1645fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) 1646fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi continue; 1647fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1648fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (!list_empty(&dep->req_queued)) 1649fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi return; 1650fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 1651fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1652fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 1653fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg |= dwc->u1u2; 1654fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 1655fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 1656fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc->u1u2 = 0; 1657fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 165872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 165972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 166072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_start_isoc(struct dwc3 *dwc, 166172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep, const struct dwc3_event_depevt *event) 166272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 16639bafa56c7cee5c6fa68de5924220abb220c7e229Paul Zimmerman u32 uf, mask; 166472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 166572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (list_empty(&dep->request_list)) { 166672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", 166772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 166872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 166972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 167072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 16719bafa56c7cee5c6fa68de5924220abb220c7e229Paul Zimmerman mask = ~(dep->interval - 1); 16729bafa56c7cee5c6fa68de5924220abb220c7e229Paul Zimmerman uf = event->parameters & mask; 16739bafa56c7cee5c6fa68de5924220abb220c7e229Paul Zimmerman /* 4 micro frames in the future */ 16749bafa56c7cee5c6fa68de5924220abb220c7e229Paul Zimmerman uf += dep->interval * 4; 167572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 167672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __dwc3_gadget_kick_transfer(dep, uf, 1); 167772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 167872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 167972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep, 168072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 168172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 168272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = dep->dwc; 168372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_event_depevt mod_ev = *event; 168472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 168572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 16861d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * We were asked to remove one request. It is possible that this 16871d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * request and a few others were started together and have the same 168872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * transfer index. Since we stopped the complete endpoint we don't 168972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * know how many requests were already completed (and not yet) 169072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * reported and how could be done (later). We purge them all until 169172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * the end of the list. 169272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 169372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi mod_ev.status = DEPEVT_STATUS_LST; 169472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN); 169572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_BUSY; 16961d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman /* pending requests are ignored and are queued on XferNotReady */ 169772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 169872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 169972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_ep_cmd_compl(struct dwc3_ep *dep, 170072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 170172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 170272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 param = event->parameters; 170372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd_type = (param >> 8) & ((1 << 5) - 1); 170472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 170572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (cmd_type) { 170672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_ENDTRANSFER: 170772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_process_ep_cmd_complete(dep, event); 170872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 170972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPCMD_STARTTRANSFER: 171072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->res_trans_idx = param & 0x7f; 171172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 171272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 171372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi printk(KERN_ERR "%s() unknown /unexpected type: %d\n", 171472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi __func__, cmd_type); 171572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 171672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi }; 171772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 171872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 171972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_endpoint_interrupt(struct dwc3 *dwc, 172072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_depevt *event) 172172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 172272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 172372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 epnum = event->endpoint_number; 172472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 172672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 172772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: %s\n", dep->name, 172872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep_event_string(event->endpoint_event)); 172972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 173072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (epnum == 0 || epnum == 1) { 173172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep0_interrupt(dwc, event); 173272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 173372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 173472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 173572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->endpoint_event) { 173672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERCOMPLETE: 1737c2df85ca31645ed3c68c56bd30a3673e034224f1Paul Zimmerman dep->res_trans_idx = 0; 1738c2df85ca31645ed3c68c56bd30a3673e034224f1Paul Zimmerman 173916e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 174072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n", 174172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 174272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 174372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 174472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 174572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_endpoint_transfer_complete(dwc, dep, event, 1); 174672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 174772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERINPROGRESS: 174816e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 174972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s is not an Isochronous endpoint\n", 175072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 175172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 175272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 175372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 175472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_endpoint_transfer_complete(dwc, dep, event, 0); 175572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 175672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_XFERNOTREADY: 175716e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { 175872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_start_isoc(dwc, dep, event); 175972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } else { 176072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 176172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 176272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s: reason %s\n", 176340aa41fba348bc5bd19ff5bcf2b03d67bb01d1ceFelipe Balbi dep->name, event->status & 176440aa41fba348bc5bd19ff5bcf2b03d67bb01d1ceFelipe Balbi DEPEVT_STATUS_TRANSFER_ACTIVE 176572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ? "Transfer Active" 176672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi : "Transfer Not Active"); 176772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 176872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = __dwc3_gadget_kick_transfer(dep, 0, 1); 176972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!ret || ret == -EBUSY) 177072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 177172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 177272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s: failed to kick transfers\n", 177372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->name); 177472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 177572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 177672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 1777879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi case DWC3_DEPEVT_STREAMEVT: 177816e78db720baa9356485336ec137c7ee0a482a9bIdo Shayevitz if (!usb_endpoint_xfer_bulk(dep->endpoint.desc)) { 1779879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dev_err(dwc->dev, "Stream event for non-Bulk %s\n", 1780879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dep->name); 1781879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi return; 1782879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi } 1783879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 1784879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi switch (event->status) { 1785879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi case DEPEVT_STREAMEVT_FOUND: 1786879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dev_vdbg(dwc->dev, "Stream %d found and started\n", 1787879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi event->parameters); 1788879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi 1789879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi break; 1790879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi case DEPEVT_STREAMEVT_NOTFOUND: 1791879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi /* FALLTHROUGH */ 1792879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi default: 1793879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi dev_dbg(dwc->dev, "Couldn't find suitable stream\n"); 1794879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi } 1795879631aa658be2c1307758223b6d15236f9f6335Felipe Balbi break; 179672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_RXTXFIFOEVT: 179772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "%s FIFO Overrun\n", dep->name); 179872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 179972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEPEVT_EPCMDCMPLT: 180072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_ep_cmd_compl(dep, event); 180172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 180272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 180372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 180472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 180572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_disconnect_gadget(struct dwc3 *dwc) 180672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 180772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget_driver && dwc->gadget_driver->disconnect) { 180872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 180972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->disconnect(&dwc->gadget); 181072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 181172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 181272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 181372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 181472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_stop_active_transfer(struct dwc3 *dwc, u32 epnum) 181572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 181672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 181772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 181872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 cmd; 181972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 182072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 182172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 182272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1823624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior WARN_ON(!dep->res_trans_idx); 182472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dep->res_trans_idx) { 182572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd = DWC3_DEPCMD_ENDTRANSFER; 182672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_HIPRI_FORCERM | DWC3_DEPCMD_CMDIOC; 182772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi cmd |= DWC3_DEPCMD_PARAM(dep->res_trans_idx); 182872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 182972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); 183072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi WARN_ON_ONCE(ret); 1831a1ae9be5fc137d7e911a77ef408273ff55a53a39Sebastian Andrzej Siewior dep->res_trans_idx = 0; 183272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 183372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 183472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 183572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_stop_active_transfers(struct dwc3 *dwc) 183672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 183772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 epnum; 183872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 183972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 2; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 184072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 184172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 184272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 184372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_ENABLED)) 184472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 184572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1846624407f96f134bcd3063eb0d404fc6d41323bef8Sebastian Andrzej Siewior dwc3_remove_requests(dwc, dep); 184772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 184872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 184972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 185072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_clear_stall_all_ep(struct dwc3 *dwc) 185172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 185272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 epnum; 185372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 185472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi for (epnum = 1; epnum < DWC3_ENDPOINTS_NUM; epnum++) { 185572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 185672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 185772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 185872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 185972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[epnum]; 186072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!(dep->flags & DWC3_EP_STALL)) 186272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi continue; 186372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep->flags &= ~DWC3_EP_STALL; 186572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 186672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0, sizeof(params)); 186772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, 186872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEPCMD_CLEARSTALL, ¶ms); 186972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi WARN_ON_ONCE(ret); 187072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 187172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 187272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 187372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc) 187472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 187572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 187672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#if 0 187772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi XXX 187872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi U1/U2 is powersave optimization. Skip it for now. Anyway we need to 187972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi enable it before we can disable it. 188072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 188172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 188272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_INITU1ENA; 188372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 188472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 188572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_INITU2ENA; 188672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 188772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi#endif 188872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 188972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfers(dwc); 189072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_disconnect_gadget(dwc); 1891b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = false; 189272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 189372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_UNKNOWN; 1894df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi dwc->setup_packet_pending = false; 189572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 189672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 189772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_usb3_phy_power(struct dwc3 *dwc, int on) 189872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 189972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 190072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 190172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); 190272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 190372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (on) 190472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GUSB3PIPECTL_SUSPHY; 190572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 190672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GUSB3PIPECTL_SUSPHY; 190772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 190872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); 190972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 191072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 191172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_usb2_phy_power(struct dwc3 *dwc, int on) 191272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 191372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 191472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 191572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)); 191672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 191772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (on) 191872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; 191972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi else 192072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GUSB2PHYCFG_SUSPHY; 192172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 192272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); 192372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 192472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 192572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_reset_interrupt(struct dwc3 *dwc) 192672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 192772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 192872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 192972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 193072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 1931df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi /* 1932df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * WORKAROUND: DWC3 revisions <1.88a have an issue which 1933df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * would cause a missing Disconnect Event if there's a 1934df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * pending Setup Packet in the FIFO. 1935df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1936df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * There's no suggested workaround on the official Bug 1937df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * report, which states that "unless the driver/application 1938df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * is doing any special handling of a disconnect event, 1939df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * there is no functional issue". 1940df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1941df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Unfortunately, it turns out that we _do_ some special 1942df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * handling of a disconnect event, namely complete all 1943df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * pending transfers, notify gadget driver of the 1944df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * disconnection, and so on. 1945df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1946df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Our suggested workaround is to follow the Disconnect 1947df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Event steps here, instead, based on a setup_packet_pending 1948df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * flag. Such flag gets set whenever we have a XferNotReady 1949df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * event on EP0 and gets cleared on XferComplete for the 1950df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * same endpoint. 1951df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1952df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * Refers to: 1953df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * 1954df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * STAR#9000466709: RTL: Device : Disconnect event not 1955df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi * generated if setup packet pending in FIFO 1956df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi */ 1957df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi if (dwc->revision < DWC3_REVISION_188A) { 1958df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi if (dwc->setup_packet_pending) 1959df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi dwc3_gadget_disconnect_interrupt(dwc); 1960df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi } 1961df62df56e13d73cb0dd4c54649d4fe13557128f8Felipe Balbi 1962961906edb549c95f4cc33e4f3dbfd0fcc364954dFelipe Balbi /* after reset -> Default State */ 1963961906edb549c95f4cc33e4f3dbfd0fcc364954dFelipe Balbi dwc->dev_state = DWC3_DEFAULT_STATE; 1964961906edb549c95f4cc33e4f3dbfd0fcc364954dFelipe Balbi 196572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Enable PHYs */ 196672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb2_phy_power(dwc, true); 196772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb3_phy_power(dwc, true); 196872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 196972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (dwc->gadget.speed != USB_SPEED_UNKNOWN) 197072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_disconnect_gadget(dwc); 197172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 197272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 197372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~DWC3_DCTL_TSTCTRL_MASK; 1974e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior reg &= ~(DWC3_DCTL_INITU1ENA | DWC3_DCTL_INITU2ENA); 197572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 19763b637367ae40b6d3c20e30cb0cdd059e67bbf848Gerard Cauvy dwc->test_mode = false; 197772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 197872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_stop_active_transfers(dwc); 197972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_clear_stall_all_ep(dwc); 1980b23c843992b659d537514e6493d673284f5d6724Paul Zimmerman dwc->start_config_issued = false; 198172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 198272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Reset device address to zero */ 198372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCFG); 198472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg &= ~(DWC3_DCFG_DEVADDR_MASK); 198572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DCFG, reg); 198672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 198772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 198872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_update_ram_clk_sel(struct dwc3 *dwc, u32 speed) 198972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 199072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 199172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 usb30_clock = DWC3_GCTL_CLK_BUS; 199272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 199372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 199472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * We change the clock only at SS but I dunno why I would want to do 199572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * this. Maybe it becomes part of the power saving plan. 199672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 199772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 199872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (speed != DWC3_DSTS_SUPERSPEED) 199972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 200072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 200172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 200272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * RAMClkSel is reset to 0 after USB reset, so it must be reprogrammed 200372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * each time on Connect Done. 200472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 200572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!usb30_clock) 200672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 200772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 200872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_GCTL); 200972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg |= DWC3_GCTL_RAMCLKSEL(usb30_clock); 201072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GCTL, reg); 201172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 201272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 201372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_disable_phy(struct dwc3 *dwc, u8 speed) 201472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 201572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (speed) { 201672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_SUPER: 201772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb2_phy_power(dwc, false); 201872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 201972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_HIGH: 202072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_FULL: 202172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case USB_SPEED_LOW: 202272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_usb3_phy_power(dwc, false); 202372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 202472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 202572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 202672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 202772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) 202872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 202972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_gadget_ep_cmd_params params; 203072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_ep *dep; 203172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 203272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 203372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u8 speed; 203472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 203572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 203672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 203772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi memset(¶ms, 0x00, sizeof(params)); 203872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 203972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DSTS); 204072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi speed = reg & DWC3_DSTS_CONNECTSPD; 204172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->speed = speed; 204272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 204372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_update_ram_clk_sel(dwc, speed); 204472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 204572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (speed) { 204672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_SUPERSPEED: 204705870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi /* 204805870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * WORKAROUND: DWC3 revisions <1.90a have an issue which 204905870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * would cause a missing USB3 Reset event. 205005870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * 205105870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * In such situations, we should force a USB3 Reset 205205870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * event by calling our dwc3_gadget_reset_interrupt() 205305870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * routine. 205405870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * 205505870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * Refers to: 205605870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * 205705870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * STAR#9000483510: RTL: SS : USB3 reset event may 205805870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi * not be generated always when the link enters poll 205905870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi */ 206005870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi if (dwc->revision < DWC3_REVISION_190A) 206105870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi dwc3_gadget_reset_interrupt(dwc); 206205870c5ba2002c7d49adf8875cca49ee062af894Felipe Balbi 206372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); 206472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 512; 206572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_SUPER; 206672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 206772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_HIGHSPEED: 206872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); 206972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 64; 207072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_HIGH; 207172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 207272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_FULLSPEED2: 207372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_FULLSPEED1: 207472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64); 207572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 64; 207672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_FULL; 207772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 207872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DCFG_LOWSPEED: 207972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(8); 208072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ep0->maxpacket = 8; 208172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_LOW; 208272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 208372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 208472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 208572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Disable unneded PHY */ 208672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_disable_phy(dwc, dwc->gadget.speed); 208772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 208872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[0]; 2089c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 209072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 209172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 209272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 209372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 209472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 209572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dep = dwc->eps[1]; 2096c90bfaece97c18d1ad66b9d4c717b1cb55a647adFelipe Balbi ret = __dwc3_gadget_ep_enable(dep, &dwc3_gadget_ep0_desc, NULL); 209772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 209872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to enable %s\n", dep->name); 209972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return; 210072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 210172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 210272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 210372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Configure PHY via GUSB3PIPECTLn if required. 210472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 210572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Update GTXFIFOSIZn 210672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 210772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * In both cases reset values should be sufficient. 210872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 210972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 211072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 211172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc) 211272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 211372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "%s\n", __func__); 211472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 211572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 211672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * TODO take core out of low power mode when that's 211772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * implemented. 211872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 211972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 212072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget_driver->resume(&dwc->gadget); 212172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 212272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 212372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc, 212472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi unsigned int evtinfo) 212572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 2126fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi enum dwc3_link_state next = evtinfo & DWC3_LINK_STATE_MASK; 2127fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2128fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi /* 2129fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * WORKAROUND: DWC3 Revisions <1.83a have an issue which, depending 2130fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * on the link partner, the USB session might do multiple entry/exit 2131fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * of low power states before a transfer takes place. 2132fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 2133fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * Due to this problem, we might experience lower throughput. The 2134fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * suggested workaround is to disable DCTL[12:9] bits if we're 2135fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * transitioning from U1/U2 to U0 and enable those bits again 2136fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * after a transfer completes and there are no pending transfers 2137fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * on any of the enabled endpoints. 2138fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 2139fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * This is the first half of that workaround. 2140fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 2141fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * Refers to: 2142fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * 2143fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * STAR#9000446952: RTL: Device SS : if U1/U2 ->U0 takes >128us 2144fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi * core send LGO_Ux entering U0 2145fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi */ 2146fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (dwc->revision < DWC3_REVISION_183A) { 2147fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (next == DWC3_LINK_STATE_U0) { 2148fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u32 u1u2; 2149fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u32 reg; 2150fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2151fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi switch (dwc->link_state) { 2152fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi case DWC3_LINK_STATE_U1: 2153fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi case DWC3_LINK_STATE_U2: 2154fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg = dwc3_readl(dwc->regs, DWC3_DCTL); 2155fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi u1u2 = reg & (DWC3_DCTL_INITU2ENA 2156fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi | DWC3_DCTL_ACCEPTU2ENA 2157fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi | DWC3_DCTL_INITU1ENA 2158fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi | DWC3_DCTL_ACCEPTU1ENA); 2159fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2160fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi if (!dwc->u1u2) 2161fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc->u1u2 = reg & u1u2; 2162fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2163fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi reg &= ~u1u2; 2164fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2165fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc3_writel(dwc->regs, DWC3_DCTL, reg); 2166fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi break; 2167fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi default: 2168fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi /* do nothing */ 2169fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi break; 2170fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 2171fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 2172fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi } 2173fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi 2174fae2b904aa85beecd0950026de28921ae65fb3daFelipe Balbi dwc->link_state = next; 2175019ac83252dc2b356cb0ca81c25a077ec90309e7Felipe Balbi 2176019ac83252dc2b356cb0ca81c25a077ec90309e7Felipe Balbi dev_vdbg(dwc->dev, "%s link %d\n", __func__, dwc->link_state); 217772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 217872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 217972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_gadget_interrupt(struct dwc3 *dwc, 218072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const struct dwc3_event_devt *event) 218172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 218272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->type) { 218372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_DISCONNECT: 218472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_disconnect_interrupt(dwc); 218572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 218672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_RESET: 218772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_reset_interrupt(dwc); 218872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 218972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_CONNECT_DONE: 219072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_conndone_interrupt(dwc); 219172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 219272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_WAKEUP: 219372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_wakeup_interrupt(dwc); 219472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 219572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: 219672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_linksts_change_interrupt(dwc, event->event_info); 219772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 219872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_EOPF: 219972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "End of Periodic Frame\n"); 220072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 220172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_SOF: 220272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Start of Periodic Frame\n"); 220372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 220472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_ERRATIC_ERROR: 220572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Erratic Error\n"); 220672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 220772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_CMD_CMPL: 220872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Command Complete\n"); 220972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 221072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_DEVICE_EVENT_OVERFLOW: 221172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_vdbg(dwc->dev, "Overflow\n"); 221272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 221372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 221472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_dbg(dwc->dev, "UNKNOWN IRQ %d\n", event->type); 221572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 221672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 221772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 221872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic void dwc3_process_event_entry(struct dwc3 *dwc, 221972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi const union dwc3_event *event) 222072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 222172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Endpoint IRQ, handle it and return early */ 222272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (event->type.is_devspec == 0) { 222372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* depevt */ 222472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return dwc3_endpoint_interrupt(dwc, &event->depevt); 222572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 222672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 222772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi switch (event->type.type) { 222872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi case DWC3_EVENT_TYPE_DEV: 222972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_interrupt(dwc, &event->devt); 223072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi break; 223172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* REVISIT what to do with Carkit and I2C events ? */ 223272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi default: 223372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "UNKNOWN IRQ type %d\n", event->raw); 223472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 223572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 223672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 223772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf) 223872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 223972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3_event_buffer *evt; 224072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int left; 224172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 count; 224272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 224372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count = dwc3_readl(dwc->regs, DWC3_GEVNTCOUNT(buf)); 224472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi count &= DWC3_GEVNTCOUNT_MASK; 224572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!count) 224672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return IRQ_NONE; 224772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 224872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi evt = dwc->ev_buffs[buf]; 224972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi left = count; 225072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 225172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi while (left > 0) { 225272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi union dwc3_event event; 225372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 2254d70d84423cbc5d6d929640189cf204e693024309Felipe Balbi event.raw = *(u32 *) (evt->buf + evt->lpos); 2255d70d84423cbc5d6d929640189cf204e693024309Felipe Balbi 225672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_process_event_entry(dwc, &event); 225772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 225872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * XXX we wrap around correctly to the next entry as almost all 225972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * entries are 4 bytes in size. There is one entry which has 12 226072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * bytes which is a regular entry followed by 8 bytes data. ATM 226172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * I don't know how things are organized if were get next to the 226272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * a boundary so I worry about that once we try to handle that. 226372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 226472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE; 226572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi left -= 4; 226672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 226772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(buf), 4); 226872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 226972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 227072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return IRQ_HANDLED; 227172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 227272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 227372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbistatic irqreturn_t dwc3_interrupt(int irq, void *_dwc) 227472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 227572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi struct dwc3 *dwc = _dwc; 227672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int i; 227772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irqreturn_t ret = IRQ_NONE; 227872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 227972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_lock(&dwc->lock); 228072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 22819f622b2a407d8b34a5a7f5b4abd8b29b25cf4f32Felipe Balbi for (i = 0; i < dwc->num_event_buffers; i++) { 228272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irqreturn_t status; 228372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 228472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi status = dwc3_process_event_buf(dwc, i); 228572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (status == IRQ_HANDLED) 228672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = status; 228772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 228872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 228972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi spin_unlock(&dwc->lock); 229072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 229172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 229272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 229372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 229472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi/** 229572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * dwc3_gadget_init - Initializes gadget related registers 22961d046793958f128dd43d42a4a0dac48bf6914273Paul Zimmerman * @dwc: pointer to our controller context structure 229772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * 229872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * Returns 0 on success otherwise negative errno. 229972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 230072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbiint __devinit dwc3_gadget_init(struct dwc3 *dwc) 230172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 230272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi u32 reg; 230372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int ret; 230472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int irq; 230572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 230672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 230772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->ctrl_req_addr, GFP_KERNEL); 230872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->ctrl_req) { 230972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate ctrl request\n"); 231072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 231172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err0; 231272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 231372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 231472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb = dma_alloc_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 231572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi &dwc->ep0_trb_addr, GFP_KERNEL); 231672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->ep0_trb) { 231772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate ep0 trb\n"); 231872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 231972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err1; 232072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 232172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23223ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi dwc->setup_buf = kzalloc(DWC3_EP0_BOUNCE_SIZE, GFP_KERNEL); 232372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (!dwc->setup_buf) { 232472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to allocate setup buffer\n"); 232572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = -ENOMEM; 232672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi goto err2; 232772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 232872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 23295812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dwc->ep0_bounce = dma_alloc_coherent(dwc->dev, 23303ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi DWC3_EP0_BOUNCE_SIZE, &dwc->ep0_bounce_addr, 23313ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi GFP_KERNEL); 23325812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi if (!dwc->ep0_bounce) { 23335812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi dev_err(dwc->dev, "failed to allocate ep0 bounce buffer\n"); 23345812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi ret = -ENOMEM; 23355812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err3; 23365812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi } 23375812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 233872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_set_name(&dwc->gadget.dev, "gadget"); 233972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 234072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.ops = &dwc3_gadget_ops; 2341d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz dwc->gadget.max_speed = USB_SPEED_SUPER; 234272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.speed = USB_SPEED_UNKNOWN; 234372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.parent = dwc->dev; 2344eeb720fb21d61dfc3aac780e721150998ef603afFelipe Balbi dwc->gadget.sg_supported = true; 234572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 234672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_set_coherent_mask(&dwc->gadget.dev, dwc->dev->coherent_dma_mask); 234772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 234872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.dma_parms = dwc->dev->dma_parms; 234972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.dma_mask = dwc->dev->dma_mask; 235072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.dev.release = dwc3_gadget_release; 235172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->gadget.name = "dwc3-gadget"; 235272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 235372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* 235472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * REVISIT: Here we should clear all pending IRQs to be 235572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi * sure we're starting from a well known location. 235672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi */ 235772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 235872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = dwc3_gadget_init_endpoints(dwc); 235972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) 23605812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err4; 236172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 236272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq = platform_get_irq(to_platform_device(dwc->dev), 0); 236372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 236472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = request_irq(irq, dwc3_interrupt, IRQF_SHARED, 236572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi "dwc3", dwc); 236672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 236772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to request irq #%d --> %d\n", 236872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq, ret); 23695812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err5; 237072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 237172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 2372e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_DCFG); 2373e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior reg |= DWC3_DCFG_LPM_CAP; 2374e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior dwc3_writel(dwc->regs, DWC3_DCFG, reg); 2375e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior 2376e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior reg = dwc3_readl(dwc->regs, DWC3_DCTL); 2377e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior reg |= DWC3_DCTL_ACCEPTU1ENA | DWC3_DCTL_ACCEPTU2ENA; 2378e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior dwc3_writel(dwc->regs, DWC3_DCTL, reg); 2379e6a3b5e2888b51e37c65c97dae966f793bc4806aSebastian Andrzej Siewior 238072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi /* Enable all but Start and End of Frame IRQs */ 238172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi reg = (DWC3_DEVTEN_VNDRDEVTSTRCVEDEN | 238272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_EVNTOVERFLOWEN | 238372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_CMDCMPLTEN | 238472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_ERRTICERREN | 238572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_WKUPEVTEN | 238672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_ULSTCNGEN | 238772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_CONNECTDONEEN | 238872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_USBRSTEN | 238972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi DWC3_DEVTEN_DISCONNEVTEN); 239072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); 239172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 239272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = device_register(&dwc->gadget.dev); 239372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 239472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to register gadget device\n"); 239572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi put_device(&dwc->gadget.dev); 23965812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err6; 239772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 239872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 239972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget); 240072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi if (ret) { 240172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dev_err(dwc->dev, "failed to register udc\n"); 24025812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi goto err7; 240372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi } 240472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 240572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return 0; 240672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24075812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr7: 240872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi device_unregister(&dwc->gadget.dev); 240972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24105812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr6: 241172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); 241272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi free_irq(irq, dwc); 241372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24145812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr5: 241572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_free_endpoints(dwc); 241672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24175812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbierr4: 24183ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi dma_free_coherent(dwc->dev, DWC3_EP0_BOUNCE_SIZE, 24193ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi dwc->ep0_bounce, dwc->ep0_bounce_addr); 24205812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 242172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr3: 24220fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi kfree(dwc->setup_buf); 242372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 242472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr2: 242572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 242672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb, dwc->ep0_trb_addr); 242772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 242872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr1: 242972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 243072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req, dwc->ctrl_req_addr); 243172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 243272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbierr0: 243372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi return ret; 243472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 243572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 243672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbivoid dwc3_gadget_exit(struct dwc3 *dwc) 243772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi{ 243872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi int irq; 243972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 244072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi usb_del_gadget_udc(&dwc->gadget); 244172246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi irq = platform_get_irq(to_platform_device(dwc->dev), 0); 244272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 244372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_writel(dwc->regs, DWC3_DEVTEN, 0x00); 244472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi free_irq(irq, dwc); 244572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 244672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc3_gadget_free_endpoints(dwc); 244772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 24483ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi dma_free_coherent(dwc->dev, DWC3_EP0_BOUNCE_SIZE, 24493ef35fafdc87b72851f7785dc5331a0f4eb1b3ceFelipe Balbi dwc->ep0_bounce, dwc->ep0_bounce_addr); 24505812b1c236774ea580b6af39411eb4f7297d7623Felipe Balbi 24510fc9a1be09d9f8b19bcf64ab96836cb92beb0970Felipe Balbi kfree(dwc->setup_buf); 245272246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 245372246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb), 245472246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ep0_trb, dwc->ep0_trb_addr); 245572246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 245672246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req), 245772246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi dwc->ctrl_req, dwc->ctrl_req_addr); 245872246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi 245972246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi device_unregister(&dwc->gadget.dev); 246072246da40f3719af3bfd104a2365b32537c27d83Felipe Balbi} 2461