cdc-acm.c revision e5fbab51b4219fbd1dab28666affe38a920b5f7e
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * cdc-acm.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de> 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 1999 Pavel Machek <pavel@suse.cz> 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com> 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz> 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name> 961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek * Copyright (c) 2005 David Kubicek <dave@awk.cz> 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * USB Abstract Control Model driver for USB modems and ISDN adapters 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Sponsored by SuSE 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ChangeLog: 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.9 - thorough cleaning, URBification, almost a rewrite 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.10 - some more cleanups 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.11 - fixed flow control, read error doesn't stop reads 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.12 - added TIOCM ioctls, added break handling, made struct acm kmalloced 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.13 - added termios, added hangup 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.14 - sized down struct acm 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.15 - fixed flow control again - characters could be lost 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.16 - added code for modems with swapped data and control interfaces 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.17 - added new style probing 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.18 - fixed new style probing for devices with more configurations 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.19 - fixed CLOCAL handling (thanks to Richard Shih-Ping Chan) 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.20 - switched to probing on interface (rather than device) class 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.21 - revert to probing on device for devices with multiple configs 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.22 - probe only the control interface. if usbcore doesn't choose the 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * config we want, sysadmin changes bConfigurationValue in sysfs. 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.23 - use softirq for rx processing, as needed by tty layer 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * v0.24 - change probe method to evaluate CDC union descriptor 3361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek * v0.25 - downstream tasks paralelized to maximize throughput 34e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf * v0.26 - multiple write urbs, writesize increased 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef DEBUG 54e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#undef VERBOSE_DEBUG 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_driver.h> 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 644186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven#include <linux/mutex.h> 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 67a8c28f2389942bab376e39351d27525499630248David Brownell#include <linux/usb/cdc.h> 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/unaligned.h> 7061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek#include <linux/list.h> 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "cdc-acm.h" 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 74e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 75e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#define ACM_CLOSE_TIMEOUT 15 /* seconds to let writes drain */ 76e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version Information 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 80e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf#define DRIVER_VERSION "v0.26" 8161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek#define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek" 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_driver acm_driver; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct tty_driver *acm_tty_driver; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct acm *acm_table[ACM_TTY_MINORS]; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 884186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Venstatic DEFINE_MUTEX(open_mutex); 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ACM_READY(acm) (acm && acm->dev && acm->used) 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 92e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#ifdef VERBOSE_DEBUG 93e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#define verbose 1 94e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#else 95e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#define verbose 0 96e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell#endif 97e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Functions for ACM control messages. 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_ctrl_msg(struct acm *acm, int request, int value, void *buf, int len) 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds request, USB_RT_ACM, value, 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->control->altsetting[0].desc.bInterfaceNumber, 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf, len, 5000); 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d", request, value, len, retval); 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval < 0 ? retval : 0; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* devices aren't required to support these requests. 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the cdc acm descriptor tells whether they do... 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define acm_set_control(acm, control) \ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define acm_set_line(acm, line) \ 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define acm_send_break(acm, ms) \ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 123884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * Write buffer management. 124884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * All of these assume proper locks taken by the caller. 125884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum */ 126884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 127884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukumstatic int acm_wb_alloc(struct acm *acm) 128884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum{ 129884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum int i, wbn; 130884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum struct acm_wb *wb; 131884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 132e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf wbn = 0; 133884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum i = 0; 134884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum for (;;) { 135884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum wb = &acm->wb[wbn]; 136884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum if (!wb->use) { 137884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum wb->use = 1; 138884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return wbn; 139884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 14086478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum wbn = (wbn + 1) % ACM_NW; 14186478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum if (++i >= ACM_NW) 142884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return -1; 143884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 144884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum} 145884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 146884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukumstatic int acm_wb_is_avail(struct acm *acm) 147884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum{ 148884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum int i, n; 149e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell unsigned long flags; 150884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 15186478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum n = ACM_NW; 152e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell spin_lock_irqsave(&acm->write_lock, flags); 15386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < ACM_NW; i++) { 15486478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum n -= acm->wb[i].use; 155884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 156e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell spin_unlock_irqrestore(&acm->write_lock, flags); 157884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return n; 158884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum} 159884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 160884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum/* 161884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * Finish write. 162884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum */ 163e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engrafstatic void acm_write_done(struct acm *acm, struct acm_wb *wb) 164884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum{ 165884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum unsigned long flags; 166884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 167884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_lock_irqsave(&acm->write_lock, flags); 168e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf wb->use = 0; 16911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->transmitting--; 170884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_unlock_irqrestore(&acm->write_lock, flags); 171884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum} 172884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 173884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum/* 174884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * Poke write. 17511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum * 17611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum * the caller is responsible for locking 177884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum */ 17811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 17911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukumstatic int acm_start_wb(struct acm *acm, struct acm_wb *wb) 18011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum{ 18111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum int rc; 18211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 18311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->transmitting++; 18411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 18511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum wb->urb->transfer_buffer = wb->buf; 18611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum wb->urb->transfer_dma = wb->dmah; 18711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum wb->urb->transfer_buffer_length = wb->len; 18811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum wb->urb->dev = acm->dev; 18911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 19011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if ((rc = usb_submit_urb(wb->urb, GFP_ATOMIC)) < 0) { 19111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dbg("usb_submit_urb(write bulk) failed: %d", rc); 19211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm_write_done(acm, wb); 19311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 19411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum return rc; 19511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum} 19611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 197e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engrafstatic int acm_write_start(struct acm *acm, int wbn) 198884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum{ 199884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum unsigned long flags; 200934da4635c2d05cef474e5243ef05df95b2ad264David Brownell struct acm_wb *wb = &acm->wb[wbn]; 201884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum int rc; 202884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 203884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_lock_irqsave(&acm->write_lock, flags); 204884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum if (!acm->dev) { 205934da4635c2d05cef474e5243ef05df95b2ad264David Brownell wb->use = 0; 206884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_unlock_irqrestore(&acm->write_lock, flags); 207884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return -ENODEV; 208884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 209884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 21011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dbg("%s susp_count: %d", __func__, acm->susp_count); 21111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (acm->susp_count) { 21211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->delayed_wb = wb; 21311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum schedule_work(&acm->waker); 21411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock_irqrestore(&acm->write_lock, flags); 21511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum return 0; /* A white lie */ 21611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 21711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum usb_mark_last_busy(acm->dev); 21811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 21911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum rc = acm_start_wb(acm, wb); 220884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_unlock_irqrestore(&acm->write_lock, flags); 221884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 222884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return rc; 22311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 224884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum} 225c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum/* 226c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum * attributes exported through sysfs 227c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum */ 228c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumstatic ssize_t show_caps 229c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum(struct device *dev, struct device_attribute *attr, char *buf) 230c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum{ 231c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct usb_interface *intf = to_usb_interface(dev); 232c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct acm *acm = usb_get_intfdata(intf); 233c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 234c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum return sprintf(buf, "%d", acm->ctrl_caps); 235c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum} 236c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumstatic DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); 237c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 238c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumstatic ssize_t show_country_codes 239c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum(struct device *dev, struct device_attribute *attr, char *buf) 240c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum{ 241c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct usb_interface *intf = to_usb_interface(dev); 242c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct acm *acm = usb_get_intfdata(intf); 243c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 244c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum memcpy(buf, acm->country_codes, acm->country_code_size); 245c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum return acm->country_code_size; 246c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum} 247c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 248c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumstatic DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); 249c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 250c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumstatic ssize_t show_country_rel_date 251c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum(struct device *dev, struct device_attribute *attr, char *buf) 252c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum{ 253c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct usb_interface *intf = to_usb_interface(dev); 254c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct acm *acm = usb_get_intfdata(intf); 255c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 256c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum return sprintf(buf, "%d", acm->country_rel_date); 257c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum} 258884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 259c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumstatic DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); 260884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum/* 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Interrupt handlers for various ACM device responses 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* control interface reports status changes with "interrupt" transfers */ 2657d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void acm_ctrl_irq(struct urb *urb) 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = urb->context; 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_cdc_notification *dr = urb->transfer_buffer; 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int newctrl; 271185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman int retval; 272185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman int status = urb->status; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 274185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman switch (status) { 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* success */ 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ECONNRESET: 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ENOENT: 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ESHUTDOWN: 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this urb is terminated, clean up */ 282441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - urb shutting down with status: %d", __func__, status); 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 285441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - nonzero urb status received: %d", __func__, status); 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data = (unsigned char *)(dr + 1); 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dr->bNotificationType) { 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_CDC_NOTIFY_NETWORK_CONNECTION: 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s network", dr->wValue ? "connected to" : "disconnected from"); 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_CDC_NOTIFY_SERIAL_STATE: 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 302a5abdeafedf722b0f3f357f4a23089a686b1b80dHarvey Harrison newctrl = get_unaligned_le16(data); 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acm->tty && !acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("calling hangup"); 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_hangup(acm->tty); 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlin = newctrl; 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c", 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', acm->ctrlin & ACM_CTRL_RI ? '+' : '-', 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("unknown notification %d received: index %d len %d data0 %d data1 %d", 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dr->bNotificationType, dr->wIndex, 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dr->wLength, data[0], data[1]); 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 32611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum usb_mark_last_busy(acm->dev); 327185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman retval = usb_submit_urb (urb, GFP_ATOMIC); 328185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman if (retval) 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err ("%s - usb_submit_urb failed with result %d", 330441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, retval); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* data interface returns incoming bytes, or we got unthrottled */ 3347d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void acm_read_bulk(struct urb *urb) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 33661a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_rb *buf; 33761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_ru *rcv = urb->context; 33861a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm *acm = rcv->instance; 33986478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum int status = urb->status; 340185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman 341185d40587d22fe604962fb53c0c9a9f1670feb66Greg Kroah-Hartman dbg("Entering acm_read_bulk with status %d", status); 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (!ACM_READY(acm)) { 34411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dev_dbg(&acm->data->dev, "Aborting, acm not ready"); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 34611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 34711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum usb_mark_last_busy(acm->dev); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34986478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum if (status) 350898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&acm->data->dev, "bulk rx status %d\n", status); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 35261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek buf = rcv->buffer; 35361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek buf->size = urb->actual_length; 35461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 35586478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum if (likely(status == 0)) { 35686478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum spin_lock(&acm->read_lock); 35711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->processing++; 35886478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum list_add_tail(&rcv->list, &acm->spare_read_urbs); 35986478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum list_add_tail(&buf->list, &acm->filled_read_bufs); 36086478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum spin_unlock(&acm->read_lock); 36186478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum } else { 36286478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum /* we drop the buffer due to an error */ 36386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum spin_lock(&acm->read_lock); 36486478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum list_add_tail(&rcv->list, &acm->spare_read_urbs); 36586478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum list_add(&buf->list, &acm->spare_read_bufs); 36686478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum spin_unlock(&acm->read_lock); 36786478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum /* nevertheless the tasklet must be kicked unconditionally 36886478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum so the queue cannot dry up */ 36986478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum } 37011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (likely(!acm->susp_count)) 37111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum tasklet_schedule(&acm->urb_task); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acm_rx_tasklet(unsigned long _acm) 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = (void *)_acm; 37761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_rb *buf; 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty = acm->tty; 37961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_ru *rcv; 380762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski unsigned long flags; 381ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum unsigned char throttled; 38211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("Entering acm_rx_tasklet"); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 385ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum if (!ACM_READY(acm)) 38611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum { 38711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dbg("acm_rx_tasklet: ACM not ready"); 388ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum return; 38911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 390ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum 391834dbca5b6b79ddb7cf56001ea7b6d4481fdf1e7Oliver Neukum spin_lock_irqsave(&acm->throttle_lock, flags); 392ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum throttled = acm->throttle; 393834dbca5b6b79ddb7cf56001ea7b6d4481fdf1e7Oliver Neukum spin_unlock_irqrestore(&acm->throttle_lock, flags); 394ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum if (throttled) 39511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum { 39611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dbg("acm_rx_tasklet: throttled"); 39761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek return; 39811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 39961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 40061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubiceknext_buffer: 401762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_lock_irqsave(&acm->read_lock, flags); 40261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek if (list_empty(&acm->filled_read_bufs)) { 403762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 40461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek goto urbs; 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 40661a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek buf = list_entry(acm->filled_read_bufs.next, 40761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_rb, list); 40861a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_del(&buf->list); 409762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 41061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 4113dd2ae81f70f191f5b6751d18fdfe61dbafda7e8Oliver Neukum dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d", buf, buf->size); 41261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 41333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_buffer_request_room(tty, buf->size); 414834dbca5b6b79ddb7cf56001ea7b6d4481fdf1e7Oliver Neukum spin_lock_irqsave(&acm->throttle_lock, flags); 415ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum throttled = acm->throttle; 416834dbca5b6b79ddb7cf56001ea7b6d4481fdf1e7Oliver Neukum spin_unlock_irqrestore(&acm->throttle_lock, flags); 417ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum if (!throttled) 41833f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_insert_flip_string(tty, buf->base, buf->size); 41961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek tty_flip_buffer_push(tty); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 421ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum if (throttled) { 422ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum dbg("Throttling noticed"); 423762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_lock_irqsave(&acm->read_lock, flags); 42461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_add(&buf->list, &acm->filled_read_bufs); 425762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 429762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_lock_irqsave(&acm->read_lock, flags); 43061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_add(&buf->list, &acm->spare_read_bufs); 431762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 43261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek goto next_buffer; 43361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 43461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicekurbs: 43561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek while (!list_empty(&acm->spare_read_bufs)) { 436762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_lock_irqsave(&acm->read_lock, flags); 43761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek if (list_empty(&acm->spare_read_urbs)) { 43811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->processing = 0; 439762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 44061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek return; 44161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 44261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek rcv = list_entry(acm->spare_read_urbs.next, 44361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_ru, list); 44461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_del(&rcv->list); 445762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 44661a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 44761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek buf = list_entry(acm->spare_read_bufs.next, 44861a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_rb, list); 44961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_del(&buf->list); 45061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 45161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek rcv->buffer = buf; 45261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 45361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek usb_fill_bulk_urb(rcv->urb, acm->dev, 45461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek acm->rx_endpoint, 45561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek buf->base, 45661a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek acm->readsize, 45761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek acm_read_bulk, rcv); 45861a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek rcv->urb->transfer_dma = buf->dma; 45961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 46061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 46161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek /* This shouldn't kill the driver as unsuccessful URBs are returned to the 46261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek free-urbs-pool and resubmited ASAP */ 46311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock_irqsave(&acm->read_lock, flags); 46411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (acm->susp_count || usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) { 46561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_add(&buf->list, &acm->spare_read_bufs); 46661a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_add(&rcv->list, &acm->spare_read_urbs); 46711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->processing = 0; 468762f007b05446f5c63268fb2c28646f28959ee4bJarek Poplawski spin_unlock_irqrestore(&acm->read_lock, flags); 46961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek return; 47011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } else { 47111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock_irqrestore(&acm->read_lock, flags); 47211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dbg("acm_rx_tasklet: sending urb 0x%p, rcv 0x%p, buf 0x%p", rcv->urb, rcv, buf); 47361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 47461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 47511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock_irqsave(&acm->read_lock, flags); 47611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->processing = 0; 47711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock_irqrestore(&acm->read_lock, flags); 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* data interface wrote those outgoing bytes */ 4817d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void acm_write_bulk(struct urb *urb) 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 483cdc97792289179974af6dda781c855696358d307Ming Lei struct acm_wb *wb = urb->context; 484e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell struct acm *acm = wb->instance; 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 486e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell if (verbose || urb->status 487e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell || (urb->actual_length != urb->transfer_buffer_length)) 488e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell dev_dbg(&acm->data->dev, "tx %d/%d bytes -- > %d\n", 489e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell urb->actual_length, 490e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell urb->transfer_buffer_length, 491e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell urb->status); 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 493e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf acm_write_done(acm, wb); 494884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum if (ACM_READY(acm)) 495884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum schedule_work(&acm->work); 496e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell else 497e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell wake_up_interruptible(&acm->drain_wait); 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 500c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void acm_softint(struct work_struct *work) 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 502c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct acm *acm = container_of(work, struct acm, work); 503e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 504e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell dev_vdbg(&acm->data->dev, "tx work\n"); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_wakeup(acm->tty); 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukumstatic void acm_waker(struct work_struct *waker) 51111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum{ 51211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum struct acm *acm = container_of(waker, struct acm, waker); 51311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum int rv; 51411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 51511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum rv = usb_autopm_get_interface(acm->control); 51611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (rv < 0) { 51711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum err("Autopm failure in %s", __func__); 51811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum return; 51911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 52011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (acm->delayed_wb) { 52111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm_start_wb(acm, acm->delayed_wb); 52211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->delayed_wb = NULL; 52311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 52411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum usb_autopm_put_interface(acm->control); 52511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum} 52611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * TTY handlers 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_open(struct tty_struct *tty, struct file *filp) 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm; 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rv = -EINVAL; 53561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek int i; 5363dd2ae81f70f191f5b6751d18fdfe61dbafda7e8Oliver Neukum dbg("Entering acm_tty_open."); 5374186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven 5384186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven mutex_lock(&open_mutex); 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm = acm_table[tty->index]; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acm || !acm->dev) 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_out; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rv = 0; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 54628d1dfadd3ca07e7ec1c3de4f82ac2b8ece4be91David Engraf set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty->driver_data = acm; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->tty = tty; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek /* force low_latency on so that our tty_push actually forces the data through, 55161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek otherwise it is scheduled, and with high data rates data can get lost. */ 55261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek tty->low_latency = 1; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55494409cc1e507b157f8442dad80ff5e560c3205e5Oliver Neukum if (usb_autopm_get_interface(acm->control) < 0) 55594409cc1e507b157f8442dad80ff5e560c3205e5Oliver Neukum goto early_bail; 55611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum else 55711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->control->needs_remote_wakeup = 1; 5581365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 5591365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_lock(&acm->mutex); 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acm->used++) { 5611365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum usb_autopm_put_interface(acm->control); 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5651365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlurb->dev = acm->dev; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("usb_submit_urb(ctrl irq) failed"); 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto bail_out; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 572ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) && 573ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum (acm->ctrl_caps & USB_CDC_CAP_LINE)) 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto full_bailout; 57511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum usb_autopm_put_interface(acm->control); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek INIT_LIST_HEAD(&acm->spare_read_urbs); 57861a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek INIT_LIST_HEAD(&acm->spare_read_bufs); 57961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek INIT_LIST_HEAD(&acm->filled_read_bufs); 58086478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < acm->rx_buflimit; i++) { 58161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_add(&(acm->ru[i].list), &acm->spare_read_urbs); 58261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 58386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < acm->rx_buflimit; i++) { 58461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek list_add(&(acm->rb[i].list), &acm->spare_read_bufs); 58561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 58661a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 587ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum acm->throttle = 0; 588ca79b7b4158cbf32625793a1fc1d59ac46d44197Oliver Neukum 58961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek tasklet_schedule(&acm->urb_task); 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_out: 5931365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_unlock(&acm->mutex); 59494409cc1e507b157f8442dad80ff5e560c3205e5Oliver Neukum mutex_unlock(&open_mutex); 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rv; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfull_bailout: 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(acm->ctrlurb); 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsbail_out: 6001365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum usb_autopm_put_interface(acm->control); 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->used--; 6021365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_unlock(&acm->mutex); 60394409cc1e507b157f8442dad80ff5e560c3205e5Oliver Neukumearly_bail: 60494409cc1e507b157f8442dad80ff5e560c3205e5Oliver Neukum mutex_unlock(&open_mutex); 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EIO; 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 60883ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dkstatic void acm_tty_unregister(struct acm *acm) 60983ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk{ 61086478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum int i,nr; 61161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 61286478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum nr = acm->rx_buflimit; 61383ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk tty_unregister_device(acm_tty_driver, acm->minor); 61483ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk usb_put_intf(acm->control); 61583ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk acm_table[acm->minor] = NULL; 61683ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk usb_free_urb(acm->ctrlurb); 617e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf for (i = 0; i < ACM_NW; i++) 618e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf usb_free_urb(acm->wb[i].urb); 61986478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < nr; i++) 62061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek usb_free_urb(acm->ru[i].urb); 621c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum kfree(acm->country_codes); 62283ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk kfree(acm); 62383ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk} 62483ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk 625e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownellstatic int acm_tty_chars_in_buffer(struct tty_struct *tty); 626e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acm_tty_close(struct tty_struct *tty, struct file *filp) 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 63086478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum int i,nr; 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acm || !acm->used) 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 63586478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum nr = acm->rx_buflimit; 6364186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven mutex_lock(&open_mutex); 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!--acm->used) { 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acm->dev) { 63911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum usb_autopm_get_interface(acm->control); 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_set_control(acm, acm->ctrlout = 0); 641e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 642e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell /* try letting the last writes drain naturally */ 643e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell wait_event_interruptible_timeout(acm->drain_wait, 644e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell (ACM_NW == acm_wb_is_avail(acm)) 645e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell || !acm->dev, 646e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell ACM_CLOSE_TIMEOUT * HZ); 647e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_kill_urb(acm->ctrlurb); 649e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf for (i = 0; i < ACM_NW; i++) 650e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf usb_kill_urb(acm->wb[i].urb); 65186478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < nr; i++) 65261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek usb_kill_urb(acm->ru[i].urb); 65311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->control->needs_remote_wakeup = 0; 6541365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum usb_autopm_put_interface(acm->control); 65583ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk } else 65683ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk acm_tty_unregister(acm); 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6584186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven mutex_unlock(&open_mutex); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int count) 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int stat; 665884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum unsigned long flags; 666884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum int wbn; 667884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum struct acm_wb *wb; 668884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 6693dd2ae81f70f191f5b6751d18fdfe61dbafda7e8Oliver Neukum dbg("Entering acm_tty_write to write %d bytes,", count); 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!count) 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 676884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_lock_irqsave(&acm->write_lock, flags); 677884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum if ((wbn = acm_wb_alloc(acm)) < 0) { 678884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_unlock_irqrestore(&acm->write_lock, flags); 679884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return 0; 680884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 681884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum wb = &acm->wb[wbn]; 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 683884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum count = (count > acm->writesize) ? acm->writesize : count; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("Get %d bytes...", count); 685884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum memcpy(wb->buf, buf, count); 686884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum wb->len = count; 687884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_unlock_irqrestore(&acm->write_lock, flags); 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 689e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf if ((stat = acm_write_start(acm, wbn)) < 0) 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return stat; 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return count; 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_write_room(struct tty_struct *tty) 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 699884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum /* 700884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * Do not let the line discipline to know that we have a reserve, 701884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * or it might get too enthusiastic. 702884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum */ 703934da4635c2d05cef474e5243ef05df95b2ad264David Brownell return acm_wb_is_avail(acm) ? acm->writesize : 0; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_chars_in_buffer(struct tty_struct *tty) 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 711884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum /* 712884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum * This is inaccurate (overcounts), but it works. 713884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum */ 71486478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acm_tty_throttle(struct tty_struct *tty) 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_bh(&acm->throttle_lock); 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->throttle = 1; 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_bh(&acm->throttle_lock); 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acm_tty_unthrottle(struct tty_struct *tty) 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_bh(&acm->throttle_lock); 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->throttle = 0; 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_bh(&acm->throttle_lock); 73561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek tasklet_schedule(&acm->urb_task); 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7389e98966c7bb94355689478bc84cc3e0c190f977eAlan Coxstatic int acm_tty_break_ctl(struct tty_struct *tty, int state) 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7419e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox int retval; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7439e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return -EINVAL; 7449e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox retval = acm_send_break(acm, state ? 0xffff : 0); 7459e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox if (retval < 0) 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("send break failed"); 7479e98966c7bb94355689478bc84cc3e0c190f977eAlan Cox return retval; 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_tiocmget(struct tty_struct *tty, struct file *file) 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds TIOCM_CTS; 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_tiocmset(struct tty_struct *tty, struct file *file, 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int set, unsigned int clear) 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int newctrl; 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newctrl = acm->ctrlout; 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newctrl = (newctrl & ~clear) | set; 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acm->ctrlout == newctrl) 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return acm_set_control(acm, acm->ctrlout = newctrl); 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7954c4c9432a6c916729c7296c47fe93b053a73e20cArjan van de Venstatic const __u32 acm_tty_speed[] = { 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0, 50, 75, 110, 134, 150, 200, 300, 600, 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1200, 1800, 2400, 4800, 9600, 19200, 38400, 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57600, 115200, 230400, 460800, 500000, 576000, 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 921600, 1000000, 1152000, 1500000, 2000000, 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2500000, 3000000, 3500000, 4000000 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8034c4c9432a6c916729c7296c47fe93b053a73e20cArjan van de Venstatic const __u8 acm_tty_size[] = { 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5, 6, 7, 8 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 807606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Coxstatic void acm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios_old) 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm = tty->driver_data; 810606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios *termios = tty->termios; 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_cdc_line_coding newline; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int newctrl = acm->ctrlout; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ACM_READY(acm)) 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.dwDTERate = cpu_to_le32p(acm_tty_speed + 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (termios->c_cflag & CBAUD & ~CBAUDEX) + (termios->c_cflag & CBAUDEX ? 15 : 0)); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.bParityType = termios->c_cflag & PARENB ? 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (termios->c_cflag & PARODD ? 1 : 2) + (termios->c_cflag & CMSPAR ? 2 : 0) : 0; 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->clocal = ((termios->c_cflag & CLOCAL) != 0); 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!newline.dwDTERate) { 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.dwDTERate = acm->line.dwDTERate; 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newctrl &= ~ACM_CTRL_DTR; 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else newctrl |= ACM_CTRL_DTR; 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (newctrl != acm->ctrlout) 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_set_control(acm, acm->ctrlout = newctrl); 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (memcmp(&acm->line, &newline, sizeof newline)) { 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(&acm->line, &newline, sizeof newline); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("set line: %d %d %d %d", le32_to_cpu(newline.dwDTERate), 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.bCharFormat, newline.bParityType, 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds newline.bDataBits); 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_set_line(acm, &acm->line); 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * USB probe and disconnect routines. 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 847830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum/* Little helpers: write/read buffers free */ 848884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukumstatic void acm_write_buffers_free(struct acm *acm) 849884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum{ 850884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum int i; 851884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum struct acm_wb *wb; 852884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 85386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { 854884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum usb_buffer_free(acm->dev, acm->writesize, wb->buf, wb->dmah); 855884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 856884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum} 857884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 858830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukumstatic void acm_read_buffers_free(struct acm *acm) 859830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum{ 860830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum struct usb_device *usb_dev = interface_to_usbdev(acm->control); 861830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum int i, n = acm->rx_buflimit; 862830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum 863830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum for (i = 0; i < n; i++) 864830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); 865830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum} 866830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum 867884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum/* Little helper: write buffers allocate */ 868884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukumstatic int acm_write_buffers_alloc(struct acm *acm) 869884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum{ 870884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum int i; 871884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum struct acm_wb *wb; 872884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 87386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { 874884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum wb->buf = usb_buffer_alloc(acm->dev, acm->writesize, GFP_KERNEL, 875884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum &wb->dmah); 876884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum if (!wb->buf) { 877884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum while (i != 0) { 878884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum --i; 879884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum --wb; 880884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum usb_buffer_free(acm->dev, acm->writesize, 881884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum wb->buf, wb->dmah); 882884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 883884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return -ENOMEM; 884884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 885884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum } 886884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum return 0; 887884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum} 888884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int acm_probe (struct usb_interface *intf, 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct usb_device_id *id) 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_cdc_union_desc *union_header = NULL; 893c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct usb_cdc_country_functional_desc *cfd = NULL; 894c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell unsigned char *buffer = intf->altsetting->extra; 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int buflen = intf->altsetting->extralen; 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_interface *control_interface; 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_interface *data_interface; 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_endpoint_descriptor *epctrl; 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_endpoint_descriptor *epread; 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_endpoint_descriptor *epwrite; 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_device *usb_dev = interface_to_usbdev(intf); 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct acm *acm; 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int minor; 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ctrlsize,readsize; 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 *buf; 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 ac_management_function = 0; 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 call_management_function = 0; 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int call_interface_num = -1; 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int data_interface_num; 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long quirks; 91186478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum int num_rx_buf; 91261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek int i; 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91486478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum /* normal quirks */ 9151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds quirks = (unsigned long)id->driver_info; 91686478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; 91786478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum 91886478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum /* handle quirks deadly to normal probing*/ 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (quirks == NO_UNION_NORMAL) { 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_interface = usb_ifnum_to_if(usb_dev, 1); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control_interface = usb_ifnum_to_if(usb_dev, 0); 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto skip_normal_probe; 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* normal probing*/ 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buffer) { 927898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches err("Weird descriptor references\n"); 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buflen) { 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (intf->cur_altsetting->endpoint->extralen && intf->cur_altsetting->endpoint->extra) { 933898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"Seeking extra descriptors on endpoint\n"); 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buflen = intf->cur_altsetting->endpoint->extralen; 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer = intf->cur_altsetting->endpoint->extra; 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err("Zero length descriptor references\n"); 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (buflen > 0) { 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (buffer [1] != USB_DT_CS_INTERFACE) { 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err("skipping garbage\n"); 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto next_desc; 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (buffer [2]) { 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_CDC_UNION_TYPE: /* we've found it */ 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (union_header) { 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err("More than one union descriptor, skipping ..."); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto next_desc; 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds union_header = (struct usb_cdc_union_desc *) 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 957c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ 958c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum cfd = (struct usb_cdc_country_functional_desc *)buffer; 959c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum break; 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_CDC_HEADER_TYPE: /* maybe check version */ 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; /* for now we ignore it */ 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_CDC_ACM_TYPE: 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ac_management_function = buffer[3]; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_CDC_CALL_MANAGEMENT_TYPE: 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds call_management_function = buffer[3]; 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds call_interface_num = buffer[4]; 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((call_management_function & 3) != 3) 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err("This device cannot do calls on its own. It is no modem."); 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 972c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell /* there are LOTS more CDC descriptors that 973c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell * could legitimately be found here. 974c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell */ 975c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell dev_dbg(&intf->dev, "Ignoring descriptor: " 976c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell "type %02x, length %d\n", 977c6dbf554bc8a79c9caab3dbf891a33c19068f646David Brownell buffer[2], buffer[0]); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsnext_desc: 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buflen -= buffer[0]; 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buffer += buffer[0]; 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!union_header) { 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (call_interface_num > 0) { 987898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"No union descriptor, using call management descriptor\n"); 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control_interface = intf; 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 991898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"No union descriptor, giving up\n"); 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!control_interface || !data_interface) { 998898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"no interfaces\n"); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (data_interface_num != call_interface_num) 1004dc0d5c1e5c7532e800fff6e313cd4af44af99976Joe Perches dev_dbg(&intf->dev,"Separate call control interface. That is not fully supported.\n"); 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsskip_normal_probe: 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /*workaround for switched interfaces */ 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (data_interface->cur_altsetting->desc.bInterfaceClass != CDC_DATA_INTERFACE_TYPE) { 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (control_interface->cur_altsetting->desc.bInterfaceClass == CDC_DATA_INTERFACE_TYPE) { 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_interface *t; 1012898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"Your device has switched interfaces.\n"); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds t = control_interface; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control_interface = data_interface; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_interface = t; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 102174da5d68a54d66667664fbe233ededab2376a070Alan Stern 102274da5d68a54d66667664fbe233ededab2376a070Alan Stern /* Accept probe requests only for the control interface */ 102374da5d68a54d66667664fbe233ededab2376a070Alan Stern if (intf != control_interface) 102474da5d68a54d66667664fbe233ededab2376a070Alan Stern return -ENODEV; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_interface_claimed(data_interface)) { /* valid in this context */ 1027898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"The data interface isn't available\n"); 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (data_interface->cur_altsetting->desc.bNumEndpoints < 2) 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epctrl = &control_interface->cur_altsetting->endpoint[0].desc; 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epread = &data_interface->cur_altsetting->endpoint[0].desc; 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epwrite = &data_interface->cur_altsetting->endpoint[1].desc; 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* workaround for switched endpoints */ 104145aea704d12d05f06b3f82974aa1438460f42398Luiz Fernando N. Capitulino if (!usb_endpoint_dir_in(epread)) { 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* descriptors are swapped */ 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_endpoint_descriptor *t; 1044898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev,"The data interface has switched endpoints\n"); 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds t = epread; 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epread = epwrite; 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds epwrite = t; 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("interfaces are valid"); 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++); 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (minor == ACM_TTY_MINORS) { 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err("no more free acm devices"); 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 105846f116eab81b21c6ae8c4f169498c632b1f94bf1Oliver Neukum if (!(acm = kzalloc(sizeof(struct acm), GFP_KERNEL))) { 1059898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev, "out of memory (acm kzalloc)\n"); 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto alloc_fail; 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize); 106486478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum readsize = le16_to_cpu(epread->wMaxPacketSize)* ( quirks == SINGLE_RX_URB ? 1 : 2); 1065e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20; 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->control = control_interface; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->data = data_interface; 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->minor = minor; 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->dev = usb_dev; 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrl_caps = ac_management_function; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlsize = ctrlsize; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->readsize = readsize; 107386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum acm->rx_buflimit = num_rx_buf; 107461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek acm->urb_task.func = acm_rx_tasklet; 107561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek acm->urb_task.data = (unsigned long) acm; 1076c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&acm->work, acm_softint); 107711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum INIT_WORK(&acm->waker, acm_waker); 1078e5fbab51b4219fbd1dab28666affe38a920b5f7eDavid Brownell init_waitqueue_head(&acm->drain_wait); 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&acm->throttle_lock); 1080884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum spin_lock_init(&acm->write_lock); 108161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek spin_lock_init(&acm->read_lock); 10821365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_init(&acm->mutex); 108361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf) { 1087898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)\n"); 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto alloc_fail2; 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrl_buffer = buf; 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1092884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum if (acm_write_buffers_alloc(acm) < 0) { 1093898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev, "out of memory (write buffer alloc)\n"); 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto alloc_fail4; 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acm->ctrlurb) { 1099898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev, "out of memory (ctrlurb kmalloc)\n"); 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto alloc_fail5; 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 110286478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < num_rx_buf; i++) { 110361a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek struct acm_ru *rcv = &(acm->ru[i]); 110461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 110561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek if (!(rcv->urb = usb_alloc_urb(0, GFP_KERNEL))) { 1106898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev, "out of memory (read urbs usb_alloc_urb)\n"); 110761a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek goto alloc_fail7; 110861a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 110961a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 111061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 111161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek rcv->instance = acm; 111261a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 111386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < num_rx_buf; i++) { 1114672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell struct acm_rb *rb = &(acm->rb[i]); 111561a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek 1116672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell rb->base = usb_buffer_alloc(acm->dev, readsize, 1117672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell GFP_KERNEL, &rb->dma); 1118672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell if (!rb->base) { 1119898eb71cb17644964c5895fb190e79e3d0c49679Joe Perches dev_dbg(&intf->dev, "out of memory (read bufs usb_buffer_alloc)\n"); 112061a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek goto alloc_fail7; 112161a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek } 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1123e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf for(i = 0; i < ACM_NW; i++) 1124e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf { 1125e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf struct acm_wb *snd = &(acm->wb[i]); 1126e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf 1127e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf if (!(snd->urb = usb_alloc_urb(0, GFP_KERNEL))) { 1128e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf dev_dbg(&intf->dev, "out of memory (write urbs usb_alloc_urb)"); 1129e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf goto alloc_fail7; 1130e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf } 1131e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf 1132e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf usb_fill_bulk_urb(snd->urb, usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), 1133e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf NULL, acm->writesize, acm_write_bulk, snd); 1134e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 1135e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf snd->instance = acm; 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1138c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum usb_set_intfdata (intf, acm); 1139c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 1140c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); 1141c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum if (i < 0) 1142c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum goto alloc_fail8; 1143c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 1144c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum if (cfd) { /* export the country data */ 1145c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); 1146c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum if (!acm->country_codes) 1147c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum goto skip_countries; 1148c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum acm->country_code_size = cfd->bLength - 4; 1149c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, cfd->bLength - 4); 1150c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum acm->country_rel_date = cfd->iCountryCodeRelDate; 1151c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 1152c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); 1153c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum if (i < 0) { 1154c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum kfree(acm->country_codes); 1155c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum goto skip_countries; 1156c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum } 1157c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 1158c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum i = device_create_file(&intf->dev, &dev_attr_iCountryCodeRelDate); 1159c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum if (i < 0) { 1160c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum kfree(acm->country_codes); 1161c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum goto skip_countries; 1162c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum } 1163c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum } 1164c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum 1165c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumskip_countries: 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_fill_int_urb(acm->ctrlurb, usb_dev, usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, epctrl->bInterval); 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->ctrlurb->transfer_dma = acm->ctrl_dma; 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_set_control(acm, acm->ctrlout); 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->line.dwDTERate = cpu_to_le32(9600); 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->line.bDataBits = 8; 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_set_line(acm, &acm->line); 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_driver_claim_interface(&acm_driver, data_interface, acm); 1180672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell usb_set_intfdata(data_interface, acm); 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 118283ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk usb_get_intf(control_interface); 118383ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk tty_register_device(acm_tty_driver, minor, &control_interface->dev); 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_table[minor] = acm; 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1187c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum return 0; 1188c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukumalloc_fail8: 1189e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf for (i = 0; i < ACM_NW; i++) 1190e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf usb_free_urb(acm->wb[i].urb); 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsalloc_fail7: 1192830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum acm_read_buffers_free(acm); 119386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum for (i = 0; i < num_rx_buf; i++) 119461a87adf2e7b410da8e41799c61c21a7b8c8b001David Kubicek usb_free_urb(acm->ru[i].urb); 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_free_urb(acm->ctrlurb); 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsalloc_fail5: 1197884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum acm_write_buffers_free(acm); 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsalloc_fail4: 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_buffer_free(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsalloc_fail2: 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(acm); 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsalloc_fail: 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12061365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukumstatic void stop_data_traffic(struct acm *acm) 12071365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum{ 12081365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum int i; 120911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum dbg("Entering stop_data_traffic"); 12101365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 12111365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum tasklet_disable(&acm->urb_task); 12121365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 12131365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum usb_kill_urb(acm->ctrlurb); 1214e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf for(i = 0; i < ACM_NW; i++) 1215e4cf3aa8f9cd6ee4d583b5d445b5c152acefcde4David Engraf usb_kill_urb(acm->wb[i].urb); 12161365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum for (i = 0; i < acm->rx_buflimit; i++) 12171365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum usb_kill_urb(acm->ru[i].urb); 12181365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 12191365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum tasklet_enable(&acm->urb_task); 12201365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 12211365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum cancel_work_sync(&acm->work); 122211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum cancel_work_sync(&acm->waker); 12231365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum} 12241365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void acm_disconnect(struct usb_interface *intf) 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1227c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum struct acm *acm = usb_get_intfdata(intf); 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_device *usb_dev = interface_to_usbdev(intf); 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1230672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell /* sibling interface is already cleaning up */ 1231672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell if (!acm) 123286067eead5a6c6fa413ef5cb59f7129f5ed80292Oliver Neukum return; 1233672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell 1234672c4e1843c54227ff1bdf1fdd96f9c45c56aa85David Brownell mutex_lock(&open_mutex); 1235c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum if (acm->country_codes){ 123674da5d68a54d66667664fbe233ededab2376a070Alan Stern device_remove_file(&acm->control->dev, 123774da5d68a54d66667664fbe233ededab2376a070Alan Stern &dev_attr_wCountryCodes); 123874da5d68a54d66667664fbe233ededab2376a070Alan Stern device_remove_file(&acm->control->dev, 123974da5d68a54d66667664fbe233ededab2376a070Alan Stern &dev_attr_iCountryCodeRelDate); 1240c4cabd28c73116716dcfd0d5f91414b48c0cf5ceOliver Neukum } 124174da5d68a54d66667664fbe233ededab2376a070Alan Stern device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm->dev = NULL; 124386067eead5a6c6fa413ef5cb59f7129f5ed80292Oliver Neukum usb_set_intfdata(acm->control, NULL); 124486067eead5a6c6fa413ef5cb59f7129f5ed80292Oliver Neukum usb_set_intfdata(acm->data, NULL); 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12461365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum stop_data_traffic(acm); 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1248884b600f63dc7c646f415a5d8f356df1f66ff6f2Oliver Neukum acm_write_buffers_free(acm); 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); 1250830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum acm_read_buffers_free(acm); 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1252830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum usb_driver_release_interface(&acm_driver, intf == acm->control ? 1253830f4021a8d5ce97c6bed267132e5e90fb166192Oliver Neukum acm->data : acm->control); 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acm->used) { 125683ef344a7539aa55a787790bc036f0bf3466e191brian@murphy.dk acm_tty_unregister(acm); 12574186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven mutex_unlock(&open_mutex); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12614186ecf8ad16dd05759a09594de6a87e48759ba6Arjan van de Ven mutex_unlock(&open_mutex); 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (acm->tty) 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_hangup(acm->tty); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1267357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum#ifdef CONFIG_PM 12681365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukumstatic int acm_suspend(struct usb_interface *intf, pm_message_t message) 12691365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum{ 12701365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum struct acm *acm = usb_get_intfdata(intf); 127111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum int cnt; 127211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 127311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (acm->dev->auto_pm) { 127411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum int b; 127511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 127611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock_irq(&acm->read_lock); 127711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock(&acm->write_lock); 127811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum b = acm->processing + acm->transmitting; 127911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock(&acm->write_lock); 128011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock_irq(&acm->read_lock); 128111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (b) 128211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum return -EBUSY; 128311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum } 128411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 128511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock_irq(&acm->read_lock); 128611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock(&acm->write_lock); 128711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum cnt = acm->susp_count++; 128811ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock(&acm->write_lock); 128911ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock_irq(&acm->read_lock); 12901365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 129111ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (cnt) 12921365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum return 0; 12931365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum /* 12941365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum we treat opened interfaces differently, 12951365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum we must guard against open 12961365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum */ 12971365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_lock(&acm->mutex); 12981365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 12991365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum if (acm->used) 13001365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum stop_data_traffic(acm); 13011365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 13021365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_unlock(&acm->mutex); 13031365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum return 0; 13041365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum} 13051365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 13061365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukumstatic int acm_resume(struct usb_interface *intf) 13071365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum{ 13081365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum struct acm *acm = usb_get_intfdata(intf); 13091365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum int rv = 0; 131011ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum int cnt; 13111365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 131211ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_lock_irq(&acm->read_lock); 131311ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum acm->susp_count -= 1; 131411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum cnt = acm->susp_count; 131511ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum spin_unlock_irq(&acm->read_lock); 131611ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum 131711ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum if (cnt) 13181365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum return 0; 13191365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 13201365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_lock(&acm->mutex); 13211365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum if (acm->used) { 13221365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); 13231365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum if (rv < 0) 132411ea859d64b69a747d6b060b9ed1520eab1161feOliver Neukum goto err_out; 13251365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 13261365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum tasklet_schedule(&acm->urb_task); 13271365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum } 13281365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum 13291365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukumerr_out: 13301365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum mutex_unlock(&acm->mutex); 13311365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum return rv; 13321365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum} 1333357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum 1334357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum#endif /* CONFIG_PM */ 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * USB driver structure. 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_device_id acm_ids[] = { 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* quirky and broken devices */ 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }, 1344b0e2a705bffbfb70d9bed8b5f9094901f28d9563Andrey Arapov { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ 1345b0e2a705bffbfb70d9bed8b5f9094901f28d9563Andrey Arapov .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ 1346b0e2a705bffbfb70d9bed8b5f9094901f28d9563Andrey Arapov }, 13478753e65e34a7b02f8473e7c6ce1cf7e08db4c6e3Masahito Omote { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ 13488753e65e34a7b02f8473e7c6ce1cf7e08db4c6e3Masahito Omote .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ 13498753e65e34a7b02f8473e7c6ce1cf7e08db4c6e3Masahito Omote }, 135091a9c9214e34c364bf15406aadb922787ae7129bChris Malley { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ 135191a9c9214e34c364bf15406aadb922787ae7129bChris Malley .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ 135291a9c9214e34c364bf15406aadb922787ae7129bChris Malley }, 135386478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ 135486478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum .driver_info = SINGLE_RX_URB, /* firmware bug */ 135586478944eba887f149e151bacc023ae4b2d23ea6Oliver Neukum }, 13563dd2ae81f70f191f5b6751d18fdfe61dbafda7e8Oliver Neukum { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ 13573dd2ae81f70f191f5b6751d18fdfe61dbafda7e8Oliver Neukum .driver_info = SINGLE_RX_URB, /* firmware bug */ 13583dd2ae81f70f191f5b6751d18fdfe61dbafda7e8Oliver Neukum }, 13599be8456c00c5bd603b933e6e9d82041e8b32c401Oliver Neukum { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ 13609be8456c00c5bd603b933e6e9d82041e8b32c401Oliver Neukum .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ 13619be8456c00c5bd603b933e6e9d82041e8b32c401Oliver Neukum }, 13626149ed5e3a6207595bd7362af7724d64f44af216Iain McFarlane { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ 13636149ed5e3a6207595bd7362af7724d64f44af216Iain McFarlane .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ 13646149ed5e3a6207595bd7362af7724d64f44af216Iain McFarlane }, 13659be8456c00c5bd603b933e6e9d82041e8b32c401Oliver Neukum 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* control interfaces with various AT-command sets */ 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_CDC_ACM_PROTO_AT_V25TER) }, 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_CDC_ACM_PROTO_AT_PCCA101) }, 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_CDC_ACM_PROTO_AT_GSM) }, 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_CDC_ACM_PROTO_AT_3G ) }, 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_CDC_ACM_PROTO_AT_CDMA) }, 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: COMM/ACM/0xff is likely MSFT RNDIS ... NOT a modem!! */ 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DEVICE_TABLE (usb, acm_ids); 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_driver acm_driver = { 13871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "cdc_acm", 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = acm_probe, 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disconnect = acm_disconnect, 1390357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum#ifdef CONFIG_PM 13911365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum .suspend = acm_suspend, 13921365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum .resume = acm_resume, 1393357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum#endif 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = acm_ids, 1395357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum#ifdef CONFIG_PM 13961365baf7249bb2d05e774e7681237b8e86f5007aOliver Neukum .supports_autosuspend = 1, 1397357585892e56f7c7bec4a9c8dfaf90257c8756c6Oliver Neukum#endif 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * TTY driver structures. 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1404b68e31d0ebbcc909d1941f9f230c9d062a3a13d3Jeff Dikestatic const struct tty_operations acm_ops = { 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = acm_tty_open, 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = acm_tty_close, 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write = acm_tty_write, 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .write_room = acm_tty_write_room, 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .ioctl = acm_tty_ioctl, 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .throttle = acm_tty_throttle, 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .unthrottle = acm_tty_unthrottle, 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .chars_in_buffer = acm_tty_chars_in_buffer, 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .break_ctl = acm_tty_break_ctl, 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_termios = acm_tty_set_termios, 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmget = acm_tty_tiocmget, 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .tiocmset = acm_tty_tiocmset, 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Init / exit. 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init acm_init(void) 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!acm_tty_driver) 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->owner = THIS_MODULE, 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->driver_name = "acm", 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->name = "ttyACM", 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->major = ACM_TTY_MAJOR, 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->minor_start = 0, 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, 1436331b831983f9d706f4a40d08a996d5c2c7a6ea7bGreg Kroah-Hartman acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->init_termios = tty_std_termios; 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_set_operations(acm_tty_driver, &acm_ops); 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = tty_register_driver(acm_tty_driver); 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) { 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(acm_tty_driver); 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_register(&acm_driver); 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) { 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_unregister_driver(acm_tty_driver); 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(acm_tty_driver); 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info(DRIVER_VERSION ":" DRIVER_DESC); 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit acm_exit(void) 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_deregister(&acm_driver); 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_unregister_driver(acm_tty_driver); 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds put_tty_driver(acm_tty_driver); 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(acm_init); 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(acm_exit); 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR( DRIVER_AUTHOR ); 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION( DRIVER_DESC ); 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1473