Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * cdc-acm.c |
| 3 | * |
| 4 | * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de> |
Pavel Machek | a253129 | 2010-07-18 14:27:13 +0200 | [diff] [blame] | 5 | * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com> |
| 7 | * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz> |
| 8 | * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name> |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 9 | * Copyright (c) 2005 David Kubicek <dave@awk.cz> |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 10 | * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | * USB Abstract Control Model driver for USB modems and ISDN adapters |
| 13 | * |
| 14 | * Sponsored by SuSE |
| 15 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License as published by |
| 18 | * the Free Software Foundation; either version 2 of the License, or |
| 19 | * (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 29 | */ |
| 30 | |
| 31 | #undef DEBUG |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 32 | #undef VERBOSE_DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | #include <linux/kernel.h> |
| 35 | #include <linux/errno.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/tty.h> |
Oliver Neukum | 7af25b4 | 2009-09-08 23:51:28 +0200 | [diff] [blame] | 39 | #include <linux/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/tty_driver.h> |
| 41 | #include <linux/tty_flip.h> |
| 42 | #include <linux/module.h> |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 43 | #include <linux/mutex.h> |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 44 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/usb.h> |
David Brownell | a8c28f2 | 2006-06-13 09:57:47 -0700 | [diff] [blame] | 46 | #include <linux/usb/cdc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <asm/byteorder.h> |
| 48 | #include <asm/unaligned.h> |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 49 | #include <linux/list.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | #include "cdc-acm.h" |
| 52 | |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 53 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 54 | #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" |
| 56 | |
| 57 | static struct usb_driver acm_driver; |
| 58 | static struct tty_driver *acm_tty_driver; |
| 59 | static struct acm *acm_table[ACM_TTY_MINORS]; |
| 60 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 61 | static DEFINE_MUTEX(acm_table_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 63 | /* |
| 64 | * acm_table accessors |
| 65 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 67 | /* |
| 68 | * Look up an ACM structure by index. If found and not disconnected, increment |
| 69 | * its refcount and return it with its mutex held. |
| 70 | */ |
| 71 | static struct acm *acm_get_by_index(unsigned index) |
| 72 | { |
| 73 | struct acm *acm; |
| 74 | |
| 75 | mutex_lock(&acm_table_lock); |
| 76 | acm = acm_table[index]; |
| 77 | if (acm) { |
| 78 | mutex_lock(&acm->mutex); |
| 79 | if (acm->disconnected) { |
| 80 | mutex_unlock(&acm->mutex); |
| 81 | acm = NULL; |
| 82 | } else { |
| 83 | tty_port_get(&acm->port); |
| 84 | mutex_unlock(&acm->mutex); |
| 85 | } |
| 86 | } |
| 87 | mutex_unlock(&acm_table_lock); |
| 88 | return acm; |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * Try to find an available minor number and if found, associate it with 'acm'. |
| 93 | */ |
| 94 | static int acm_alloc_minor(struct acm *acm) |
| 95 | { |
| 96 | int minor; |
| 97 | |
| 98 | mutex_lock(&acm_table_lock); |
| 99 | for (minor = 0; minor < ACM_TTY_MINORS; minor++) { |
| 100 | if (!acm_table[minor]) { |
| 101 | acm_table[minor] = acm; |
| 102 | break; |
| 103 | } |
| 104 | } |
| 105 | mutex_unlock(&acm_table_lock); |
| 106 | |
| 107 | return minor; |
| 108 | } |
| 109 | |
| 110 | /* Release the minor number associated with 'acm'. */ |
| 111 | static void acm_release_minor(struct acm *acm) |
| 112 | { |
| 113 | mutex_lock(&acm_table_lock); |
| 114 | acm_table[acm->minor] = NULL; |
| 115 | mutex_unlock(&acm_table_lock); |
| 116 | } |
Alan Cox | 739e028 | 2009-06-11 12:27:50 +0100 | [diff] [blame] | 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | /* |
| 119 | * Functions for ACM control messages. |
| 120 | */ |
| 121 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 122 | static int acm_ctrl_msg(struct acm *acm, int request, int value, |
| 123 | void *buf, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { |
| 125 | int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), |
| 126 | request, USB_RT_ACM, value, |
| 127 | acm->control->altsetting[0].desc.bInterfaceNumber, |
| 128 | buf, len, 5000); |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 129 | dev_dbg(&acm->control->dev, |
| 130 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", |
| 131 | __func__, request, value, len, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | return retval < 0 ? retval : 0; |
| 133 | } |
| 134 | |
| 135 | /* devices aren't required to support these requests. |
| 136 | * the cdc acm descriptor tells whether they do... |
| 137 | */ |
| 138 | #define acm_set_control(acm, control) \ |
| 139 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) |
| 140 | #define acm_set_line(acm, line) \ |
| 141 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) |
| 142 | #define acm_send_break(acm, ms) \ |
| 143 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) |
| 144 | |
| 145 | /* |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 146 | * Write buffer management. |
| 147 | * All of these assume proper locks taken by the caller. |
| 148 | */ |
| 149 | |
| 150 | static int acm_wb_alloc(struct acm *acm) |
| 151 | { |
| 152 | int i, wbn; |
| 153 | struct acm_wb *wb; |
| 154 | |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 155 | wbn = 0; |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 156 | i = 0; |
| 157 | for (;;) { |
| 158 | wb = &acm->wb[wbn]; |
| 159 | if (!wb->use) { |
| 160 | wb->use = 1; |
| 161 | return wbn; |
| 162 | } |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 163 | wbn = (wbn + 1) % ACM_NW; |
| 164 | if (++i >= ACM_NW) |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 165 | return -1; |
| 166 | } |
| 167 | } |
| 168 | |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 169 | static int acm_wb_is_avail(struct acm *acm) |
| 170 | { |
| 171 | int i, n; |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 172 | unsigned long flags; |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 173 | |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 174 | n = ACM_NW; |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 175 | spin_lock_irqsave(&acm->write_lock, flags); |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 176 | for (i = 0; i < ACM_NW; i++) |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 177 | n -= acm->wb[i].use; |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 178 | spin_unlock_irqrestore(&acm->write_lock, flags); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 179 | return n; |
| 180 | } |
| 181 | |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 182 | /* |
Brandon Philips | ad0b65e | 2008-11-06 11:19:11 -0800 | [diff] [blame] | 183 | * Finish write. Caller must hold acm->write_lock |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 184 | */ |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 185 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 186 | { |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 187 | wb->use = 0; |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 188 | acm->transmitting--; |
Oliver Neukum | 97d35f9 | 2009-12-16 17:05:57 +0100 | [diff] [blame] | 189 | usb_autopm_put_interface_async(acm->control); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | /* |
| 193 | * Poke write. |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 194 | * |
| 195 | * the caller is responsible for locking |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 196 | */ |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 197 | |
| 198 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) |
| 199 | { |
| 200 | int rc; |
| 201 | |
| 202 | acm->transmitting++; |
| 203 | |
| 204 | wb->urb->transfer_buffer = wb->buf; |
| 205 | wb->urb->transfer_dma = wb->dmah; |
| 206 | wb->urb->transfer_buffer_length = wb->len; |
| 207 | wb->urb->dev = acm->dev; |
| 208 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 209 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
| 210 | if (rc < 0) { |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 211 | dev_err(&acm->data->dev, |
| 212 | "%s - usb_submit_urb(write bulk) failed: %d\n", |
| 213 | __func__, rc); |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 214 | acm_write_done(acm, wb); |
| 215 | } |
| 216 | return rc; |
| 217 | } |
| 218 | |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 219 | /* |
| 220 | * attributes exported through sysfs |
| 221 | */ |
| 222 | static ssize_t show_caps |
| 223 | (struct device *dev, struct device_attribute *attr, char *buf) |
| 224 | { |
| 225 | struct usb_interface *intf = to_usb_interface(dev); |
| 226 | struct acm *acm = usb_get_intfdata(intf); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 227 | |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 228 | return sprintf(buf, "%d", acm->ctrl_caps); |
| 229 | } |
| 230 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); |
| 231 | |
| 232 | static ssize_t show_country_codes |
| 233 | (struct device *dev, struct device_attribute *attr, char *buf) |
| 234 | { |
| 235 | struct usb_interface *intf = to_usb_interface(dev); |
| 236 | struct acm *acm = usb_get_intfdata(intf); |
| 237 | |
| 238 | memcpy(buf, acm->country_codes, acm->country_code_size); |
| 239 | return acm->country_code_size; |
| 240 | } |
| 241 | |
| 242 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); |
| 243 | |
| 244 | static ssize_t show_country_rel_date |
| 245 | (struct device *dev, struct device_attribute *attr, char *buf) |
| 246 | { |
| 247 | struct usb_interface *intf = to_usb_interface(dev); |
| 248 | struct acm *acm = usb_get_intfdata(intf); |
| 249 | |
| 250 | return sprintf(buf, "%d", acm->country_rel_date); |
| 251 | } |
| 252 | |
| 253 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 254 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | * Interrupt handlers for various ACM device responses |
| 256 | */ |
| 257 | |
| 258 | /* control interface reports status changes with "interrupt" transfers */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 259 | static void acm_ctrl_irq(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | { |
| 261 | struct acm *acm = urb->context; |
| 262 | struct usb_cdc_notification *dr = urb->transfer_buffer; |
| 263 | unsigned char *data; |
| 264 | int newctrl; |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 265 | int difference; |
Greg Kroah-Hartman | 185d405 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 266 | int retval; |
| 267 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Greg Kroah-Hartman | 185d405 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 269 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | case 0: |
| 271 | /* success */ |
| 272 | break; |
| 273 | case -ECONNRESET: |
| 274 | case -ENOENT: |
| 275 | case -ESHUTDOWN: |
| 276 | /* this urb is terminated, clean up */ |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 277 | dev_dbg(&acm->control->dev, |
| 278 | "%s - urb shutting down with status: %d\n", |
| 279 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | return; |
| 281 | default: |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 282 | dev_dbg(&acm->control->dev, |
| 283 | "%s - nonzero urb status received: %d\n", |
| 284 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | goto exit; |
| 286 | } |
| 287 | |
Johan Hovold | 7e7797e | 2011-03-22 11:12:11 +0100 | [diff] [blame] | 288 | usb_mark_last_busy(acm->dev); |
| 289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | data = (unsigned char *)(dr + 1); |
| 291 | switch (dr->bNotificationType) { |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 292 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 293 | dev_dbg(&acm->control->dev, "%s - network connection: %d\n", |
| 294 | __func__, dr->wValue); |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 295 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 297 | case USB_CDC_NOTIFY_SERIAL_STATE: |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 298 | newctrl = get_unaligned_le16(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
Jiri Slaby | aa27a09 | 2013-03-07 13:12:30 +0100 | [diff] [blame] | 300 | if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { |
| 301 | dev_dbg(&acm->control->dev, "%s - calling hangup\n", |
| 302 | __func__); |
| 303 | tty_port_tty_hangup(&acm->port, false); |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 304 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 306 | difference = acm->ctrlin ^ newctrl; |
| 307 | spin_lock(&acm->read_lock); |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 308 | acm->ctrlin = newctrl; |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 309 | acm->oldcount = acm->iocount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 311 | if (difference & ACM_CTRL_DSR) |
| 312 | acm->iocount.dsr++; |
| 313 | if (difference & ACM_CTRL_BRK) |
| 314 | acm->iocount.brk++; |
| 315 | if (difference & ACM_CTRL_RI) |
| 316 | acm->iocount.rng++; |
| 317 | if (difference & ACM_CTRL_DCD) |
| 318 | acm->iocount.dcd++; |
| 319 | if (difference & ACM_CTRL_FRAMING) |
| 320 | acm->iocount.frame++; |
| 321 | if (difference & ACM_CTRL_PARITY) |
| 322 | acm->iocount.parity++; |
| 323 | if (difference & ACM_CTRL_OVERRUN) |
| 324 | acm->iocount.overrun++; |
| 325 | spin_unlock(&acm->read_lock); |
| 326 | |
| 327 | if (difference) |
| 328 | wake_up_all(&acm->wioctl); |
| 329 | |
| 330 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 332 | default: |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 333 | dev_dbg(&acm->control->dev, |
| 334 | "%s - unknown notification %d received: index %d " |
| 335 | "len %d data0 %d data1 %d\n", |
| 336 | __func__, |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 337 | dr->bNotificationType, dr->wIndex, |
| 338 | dr->wLength, data[0], data[1]); |
| 339 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | exit: |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 342 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
Greg Kroah-Hartman | 185d405 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 343 | if (retval) |
Johan Hovold | 1d9846e | 2011-03-22 11:12:14 +0100 | [diff] [blame] | 344 | dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n", |
| 345 | __func__, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | } |
| 347 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 348 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | { |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 350 | int res; |
Greg Kroah-Hartman | 185d405 | 2007-07-18 10:58:02 -0700 | [diff] [blame] | 351 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 352 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
| 353 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 355 | dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index); |
| 356 | |
| 357 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); |
| 358 | if (res) { |
| 359 | if (res != -EPERM) { |
| 360 | dev_err(&acm->data->dev, |
| 361 | "%s - usb_submit_urb failed: %d\n", |
| 362 | __func__, res); |
| 363 | } |
| 364 | set_bit(index, &acm->read_urbs_free); |
| 365 | return res; |
| 366 | } |
| 367 | |
| 368 | return 0; |
| 369 | } |
| 370 | |
| 371 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
| 372 | { |
| 373 | int res; |
| 374 | int i; |
| 375 | |
| 376 | for (i = 0; i < acm->rx_buflimit; ++i) { |
| 377 | res = acm_submit_read_urb(acm, i, mem_flags); |
| 378 | if (res) |
| 379 | return res; |
| 380 | } |
| 381 | |
| 382 | return 0; |
| 383 | } |
| 384 | |
| 385 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
| 386 | { |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 387 | if (!urb->actual_length) |
| 388 | return; |
| 389 | |
Jiri Slaby | 05c7cd3 | 2013-01-03 15:53:04 +0100 | [diff] [blame] | 390 | tty_insert_flip_string(&acm->port, urb->transfer_buffer, |
| 391 | urb->actual_length); |
Jiri Slaby | 2e124b4 | 2013-01-03 15:53:06 +0100 | [diff] [blame] | 392 | tty_flip_buffer_push(&acm->port); |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | static void acm_read_bulk_callback(struct urb *urb) |
| 396 | { |
| 397 | struct acm_rb *rb = urb->context; |
| 398 | struct acm *acm = rb->instance; |
| 399 | unsigned long flags; |
| 400 | |
| 401 | dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__, |
| 402 | rb->index, urb->actual_length); |
| 403 | set_bit(rb->index, &acm->read_urbs_free); |
| 404 | |
| 405 | if (!acm->dev) { |
| 406 | dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | return; |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 408 | } |
| 409 | usb_mark_last_busy(acm->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 411 | if (urb->status) { |
Johan Hovold | 1d9846e | 2011-03-22 11:12:14 +0100 | [diff] [blame] | 412 | dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n", |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 413 | __func__, urb->status); |
| 414 | return; |
| 415 | } |
| 416 | acm_process_read_urb(acm, urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 418 | /* throttle device if requested by tty */ |
| 419 | spin_lock_irqsave(&acm->read_lock, flags); |
| 420 | acm->throttled = acm->throttle_req; |
| 421 | if (!acm->throttled && !acm->susp_count) { |
| 422 | spin_unlock_irqrestore(&acm->read_lock, flags); |
| 423 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 424 | } else { |
Jarek Poplawski | 762f007 | 2006-10-06 07:23:11 +0200 | [diff] [blame] | 425 | spin_unlock_irqrestore(&acm->read_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | /* data interface wrote those outgoing bytes */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 430 | static void acm_write_bulk(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 432 | struct acm_wb *wb = urb->context; |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 433 | struct acm *acm = wb->instance; |
Brandon Philips | ad0b65e | 2008-11-06 11:19:11 -0800 | [diff] [blame] | 434 | unsigned long flags; |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 435 | |
Johan Hovold | 4fa4626 | 2011-03-22 11:12:16 +0100 | [diff] [blame] | 436 | if (urb->status || (urb->actual_length != urb->transfer_buffer_length)) |
| 437 | dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n", |
Johan Hovold | 1d9846e | 2011-03-22 11:12:14 +0100 | [diff] [blame] | 438 | __func__, |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 439 | urb->actual_length, |
| 440 | urb->transfer_buffer_length, |
| 441 | urb->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
Brandon Philips | ad0b65e | 2008-11-06 11:19:11 -0800 | [diff] [blame] | 443 | spin_lock_irqsave(&acm->write_lock, flags); |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 444 | acm_write_done(acm, wb); |
Brandon Philips | ad0b65e | 2008-11-06 11:19:11 -0800 | [diff] [blame] | 445 | spin_unlock_irqrestore(&acm->write_lock, flags); |
Havard Skinnemoen | 99823f4 | 2011-12-09 16:51:54 -0800 | [diff] [blame] | 446 | schedule_work(&acm->work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | } |
| 448 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 449 | static void acm_softint(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 451 | struct acm *acm = container_of(work, struct acm, work); |
David Brownell | e5fbab5 | 2008-08-06 18:46:10 -0700 | [diff] [blame] | 452 | |
Johan Hovold | 1d9846e | 2011-03-22 11:12:14 +0100 | [diff] [blame] | 453 | dev_vdbg(&acm->data->dev, "%s\n", __func__); |
| 454 | |
Jiri Slaby | 6aad04f | 2013-03-07 13:12:29 +0100 | [diff] [blame] | 455 | tty_port_tty_wakeup(&acm->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | /* |
| 459 | * TTY handlers |
| 460 | */ |
| 461 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 462 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | { |
| 464 | struct acm *acm; |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 465 | int retval; |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 466 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 467 | dev_dbg(tty->dev, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 469 | acm = acm_get_by_index(tty->index); |
| 470 | if (!acm) |
| 471 | return -ENODEV; |
| 472 | |
Jiri Slaby | f8a8c10 | 2012-03-05 14:51:48 +0100 | [diff] [blame] | 473 | retval = tty_standard_install(driver, tty); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 474 | if (retval) |
| 475 | goto error_init_termios; |
| 476 | |
| 477 | tty->driver_data = acm; |
| 478 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 479 | return 0; |
| 480 | |
| 481 | error_init_termios: |
| 482 | tty_port_put(&acm->port); |
| 483 | return retval; |
| 484 | } |
| 485 | |
| 486 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) |
| 487 | { |
| 488 | struct acm *acm = tty->driver_data; |
| 489 | |
| 490 | dev_dbg(tty->dev, "%s\n", __func__); |
| 491 | |
| 492 | return tty_port_open(&acm->port, tty, filp); |
| 493 | } |
| 494 | |
| 495 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) |
| 496 | { |
| 497 | struct acm *acm = container_of(port, struct acm, port); |
| 498 | int retval = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 500 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
| 501 | |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 502 | mutex_lock(&acm->mutex); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 503 | if (acm->disconnected) |
| 504 | goto disconnected; |
| 505 | |
| 506 | retval = usb_autopm_get_interface(acm->control); |
| 507 | if (retval) |
| 508 | goto error_get_interface; |
| 509 | |
| 510 | /* |
| 511 | * FIXME: Why do we need this? Allocating 64K of physically contiguous |
| 512 | * memory is really nasty... |
| 513 | */ |
| 514 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); |
| 515 | acm->control->needs_remote_wakeup = 1; |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | acm->ctrlurb->dev = acm->dev; |
| 518 | if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 519 | dev_err(&acm->control->dev, |
| 520 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); |
Alexey Khoroshilov | 070c0b1 | 2014-04-12 02:10:45 +0400 | [diff] [blame] | 521 | usb_autopm_put_interface(acm->control); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 522 | goto error_submit_urb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 525 | acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS; |
| 526 | if (acm_set_control(acm, acm->ctrlout) < 0 && |
Alexey Khoroshilov | 070c0b1 | 2014-04-12 02:10:45 +0400 | [diff] [blame] | 527 | (acm->ctrl_caps & USB_CDC_CAP_LINE)) { |
| 528 | usb_autopm_put_interface(acm->control); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 529 | goto error_set_control; |
Alexey Khoroshilov | 070c0b1 | 2014-04-12 02:10:45 +0400 | [diff] [blame] | 530 | } |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 531 | |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 532 | usb_autopm_put_interface(acm->control); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
Otto Meta | 6c4707f | 2012-06-06 18:46:21 +0200 | [diff] [blame] | 534 | /* |
| 535 | * Unthrottle device in case the TTY was closed while throttled. |
| 536 | */ |
| 537 | spin_lock_irq(&acm->read_lock); |
| 538 | acm->throttled = 0; |
| 539 | acm->throttle_req = 0; |
| 540 | spin_unlock_irq(&acm->read_lock); |
| 541 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 542 | if (acm_submit_read_urbs(acm, GFP_KERNEL)) |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 543 | goto error_submit_read_urbs; |
Oliver Neukum | 2b626dc | 2010-02-03 17:10:22 +0100 | [diff] [blame] | 544 | |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 545 | mutex_unlock(&acm->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 547 | return 0; |
| 548 | |
| 549 | error_submit_read_urbs: |
| 550 | acm->ctrlout = 0; |
| 551 | acm_set_control(acm, acm->ctrlout); |
| 552 | error_set_control: |
| 553 | usb_kill_urb(acm->ctrlurb); |
| 554 | error_submit_urb: |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 555 | error_get_interface: |
| 556 | disconnected: |
| 557 | mutex_unlock(&acm->mutex); |
| 558 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } |
| 560 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 561 | static void acm_port_destruct(struct tty_port *port) |
brian@murphy.dk | 83ef344 | 2005-06-29 16:53:29 -0700 | [diff] [blame] | 562 | { |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 563 | struct acm *acm = container_of(port, struct acm, port); |
| 564 | |
| 565 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 566 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 567 | acm_release_minor(acm); |
brian@murphy.dk | 83ef344 | 2005-06-29 16:53:29 -0700 | [diff] [blame] | 568 | usb_put_intf(acm->control); |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 569 | kfree(acm->country_codes); |
brian@murphy.dk | 83ef344 | 2005-06-29 16:53:29 -0700 | [diff] [blame] | 570 | kfree(acm); |
| 571 | } |
| 572 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 573 | static void acm_port_shutdown(struct tty_port *port) |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 574 | { |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 575 | struct acm *acm = container_of(port, struct acm, port); |
Johan Hovold | dab54c9 | 2011-03-22 11:12:21 +0100 | [diff] [blame] | 576 | int i; |
| 577 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 578 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
| 579 | |
| 580 | mutex_lock(&acm->mutex); |
| 581 | if (!acm->disconnected) { |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 582 | usb_autopm_get_interface(acm->control); |
| 583 | acm_set_control(acm, acm->ctrlout = 0); |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 584 | usb_kill_urb(acm->ctrlurb); |
| 585 | for (i = 0; i < ACM_NW; i++) |
| 586 | usb_kill_urb(acm->wb[i].urb); |
Johan Hovold | dab54c9 | 2011-03-22 11:12:21 +0100 | [diff] [blame] | 587 | for (i = 0; i < acm->rx_buflimit; i++) |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 588 | usb_kill_urb(acm->read_urbs[i]); |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 589 | acm->control->needs_remote_wakeup = 0; |
| 590 | usb_autopm_put_interface(acm->control); |
| 591 | } |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 592 | mutex_unlock(&acm->mutex); |
| 593 | } |
| 594 | |
| 595 | static void acm_tty_cleanup(struct tty_struct *tty) |
| 596 | { |
| 597 | struct acm *acm = tty->driver_data; |
| 598 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
| 599 | tty_port_put(&acm->port); |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | static void acm_tty_hangup(struct tty_struct *tty) |
| 603 | { |
| 604 | struct acm *acm = tty->driver_data; |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 605 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 606 | tty_port_hangup(&acm->port); |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 607 | } |
| 608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
| 610 | { |
| 611 | struct acm *acm = tty->driver_data; |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 612 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
| 613 | tty_port_close(&acm->port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 616 | static int acm_tty_write(struct tty_struct *tty, |
| 617 | const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | { |
| 619 | struct acm *acm = tty->driver_data; |
| 620 | int stat; |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 621 | unsigned long flags; |
| 622 | int wbn; |
| 623 | struct acm_wb *wb; |
| 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | if (!count) |
| 626 | return 0; |
| 627 | |
Johan Hovold | 5e9e75f | 2011-03-22 11:12:17 +0100 | [diff] [blame] | 628 | dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count); |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 629 | |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 630 | spin_lock_irqsave(&acm->write_lock, flags); |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 631 | wbn = acm_wb_alloc(acm); |
| 632 | if (wbn < 0) { |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 633 | spin_unlock_irqrestore(&acm->write_lock, flags); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 634 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | } |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 636 | wb = &acm->wb[wbn]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
Greg Kroah-Hartman | 71c2fb0 | 2013-06-07 11:42:08 -0700 | [diff] [blame] | 638 | if (!acm->dev) { |
| 639 | wb->use = 0; |
| 640 | spin_unlock_irqrestore(&acm->write_lock, flags); |
| 641 | return -ENODEV; |
| 642 | } |
| 643 | |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 644 | count = (count > acm->writesize) ? acm->writesize : count; |
Johan Hovold | 5e9e75f | 2011-03-22 11:12:17 +0100 | [diff] [blame] | 645 | dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 646 | memcpy(wb->buf, buf, count); |
| 647 | wb->len = count; |
Greg Kroah-Hartman | 71c2fb0 | 2013-06-07 11:42:08 -0700 | [diff] [blame] | 648 | |
| 649 | usb_autopm_get_interface_async(acm->control); |
| 650 | if (acm->susp_count) { |
| 651 | if (!acm->delayed_wb) |
| 652 | acm->delayed_wb = wb; |
| 653 | else |
| 654 | usb_autopm_put_interface_async(acm->control); |
| 655 | spin_unlock_irqrestore(&acm->write_lock, flags); |
| 656 | return count; /* A white lie */ |
| 657 | } |
| 658 | usb_mark_last_busy(acm->dev); |
| 659 | |
| 660 | stat = acm_start_wb(acm, wb); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 661 | spin_unlock_irqrestore(&acm->write_lock, flags); |
| 662 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 663 | if (stat < 0) |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 664 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | return count; |
| 666 | } |
| 667 | |
| 668 | static int acm_tty_write_room(struct tty_struct *tty) |
| 669 | { |
| 670 | struct acm *acm = tty->driver_data; |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 671 | /* |
| 672 | * Do not let the line discipline to know that we have a reserve, |
| 673 | * or it might get too enthusiastic. |
| 674 | */ |
David Brownell | 934da46 | 2008-08-06 18:44:12 -0700 | [diff] [blame] | 675 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | } |
| 677 | |
| 678 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) |
| 679 | { |
| 680 | struct acm *acm = tty->driver_data; |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 681 | /* |
| 682 | * if the device was unplugged then any remaining characters fell out |
| 683 | * of the connector ;) |
| 684 | */ |
| 685 | if (acm->disconnected) |
Alan Cox | 23198fd | 2009-07-20 16:05:27 +0100 | [diff] [blame] | 686 | return 0; |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 687 | /* |
| 688 | * This is inaccurate (overcounts), but it works. |
| 689 | */ |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 690 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | static void acm_tty_throttle(struct tty_struct *tty) |
| 694 | { |
| 695 | struct acm *acm = tty->driver_data; |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 696 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 697 | spin_lock_irq(&acm->read_lock); |
| 698 | acm->throttle_req = 1; |
| 699 | spin_unlock_irq(&acm->read_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | static void acm_tty_unthrottle(struct tty_struct *tty) |
| 703 | { |
| 704 | struct acm *acm = tty->driver_data; |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 705 | unsigned int was_throttled; |
| 706 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 707 | spin_lock_irq(&acm->read_lock); |
| 708 | was_throttled = acm->throttled; |
| 709 | acm->throttled = 0; |
| 710 | acm->throttle_req = 0; |
| 711 | spin_unlock_irq(&acm->read_lock); |
| 712 | |
| 713 | if (was_throttled) |
| 714 | acm_submit_read_urbs(acm, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 717 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | { |
| 719 | struct acm *acm = tty->driver_data; |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 720 | int retval; |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 721 | |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 722 | retval = acm_send_break(acm, state ? 0xffff : 0); |
| 723 | if (retval < 0) |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 724 | dev_dbg(&acm->control->dev, "%s - send break failed\n", |
| 725 | __func__); |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 726 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | } |
| 728 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 729 | static int acm_tty_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | { |
| 731 | struct acm *acm = tty->driver_data; |
| 732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | |
| 734 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | |
| 735 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | |
| 736 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | |
| 737 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | |
| 738 | TIOCM_CTS; |
| 739 | } |
| 740 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 741 | static int acm_tty_tiocmset(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | unsigned int set, unsigned int clear) |
| 743 | { |
| 744 | struct acm *acm = tty->driver_data; |
| 745 | unsigned int newctrl; |
| 746 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | newctrl = acm->ctrlout; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 748 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
| 749 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); |
| 750 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
| 751 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
| 753 | newctrl = (newctrl & ~clear) | set; |
| 754 | |
| 755 | if (acm->ctrlout == newctrl) |
| 756 | return 0; |
| 757 | return acm_set_control(acm, acm->ctrlout = newctrl); |
| 758 | } |
| 759 | |
Oliver Neukum | 18c7572 | 2012-02-17 17:21:24 -0500 | [diff] [blame] | 760 | static int get_serial_info(struct acm *acm, struct serial_struct __user *info) |
| 761 | { |
| 762 | struct serial_struct tmp; |
| 763 | |
| 764 | if (!info) |
| 765 | return -EINVAL; |
| 766 | |
| 767 | memset(&tmp, 0, sizeof(tmp)); |
| 768 | tmp.flags = ASYNC_LOW_LATENCY; |
| 769 | tmp.xmit_fifo_size = acm->writesize; |
| 770 | tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); |
Dan Williams | ba2d8ce | 2012-11-08 12:47:41 -0600 | [diff] [blame] | 771 | tmp.close_delay = acm->port.close_delay / 10; |
| 772 | tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? |
| 773 | ASYNC_CLOSING_WAIT_NONE : |
| 774 | acm->port.closing_wait / 10; |
Oliver Neukum | 18c7572 | 2012-02-17 17:21:24 -0500 | [diff] [blame] | 775 | |
| 776 | if (copy_to_user(info, &tmp, sizeof(tmp))) |
| 777 | return -EFAULT; |
| 778 | else |
| 779 | return 0; |
| 780 | } |
| 781 | |
Dan Williams | ba2d8ce | 2012-11-08 12:47:41 -0600 | [diff] [blame] | 782 | static int set_serial_info(struct acm *acm, |
| 783 | struct serial_struct __user *newinfo) |
| 784 | { |
| 785 | struct serial_struct new_serial; |
| 786 | unsigned int closing_wait, close_delay; |
| 787 | int retval = 0; |
| 788 | |
| 789 | if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) |
| 790 | return -EFAULT; |
| 791 | |
| 792 | close_delay = new_serial.close_delay * 10; |
| 793 | closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? |
| 794 | ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; |
| 795 | |
| 796 | mutex_lock(&acm->port.mutex); |
| 797 | |
| 798 | if (!capable(CAP_SYS_ADMIN)) { |
| 799 | if ((close_delay != acm->port.close_delay) || |
| 800 | (closing_wait != acm->port.closing_wait)) |
| 801 | retval = -EPERM; |
| 802 | else |
| 803 | retval = -EOPNOTSUPP; |
| 804 | } else { |
| 805 | acm->port.close_delay = close_delay; |
| 806 | acm->port.closing_wait = closing_wait; |
| 807 | } |
| 808 | |
| 809 | mutex_unlock(&acm->port.mutex); |
| 810 | return retval; |
| 811 | } |
| 812 | |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 813 | static int wait_serial_change(struct acm *acm, unsigned long arg) |
| 814 | { |
| 815 | int rv = 0; |
| 816 | DECLARE_WAITQUEUE(wait, current); |
| 817 | struct async_icount old, new; |
| 818 | |
| 819 | if (arg & (TIOCM_DSR | TIOCM_RI | TIOCM_CD )) |
| 820 | return -EINVAL; |
| 821 | do { |
| 822 | spin_lock_irq(&acm->read_lock); |
| 823 | old = acm->oldcount; |
| 824 | new = acm->iocount; |
| 825 | acm->oldcount = new; |
| 826 | spin_unlock_irq(&acm->read_lock); |
| 827 | |
| 828 | if ((arg & TIOCM_DSR) && |
| 829 | old.dsr != new.dsr) |
| 830 | break; |
| 831 | if ((arg & TIOCM_CD) && |
| 832 | old.dcd != new.dcd) |
| 833 | break; |
| 834 | if ((arg & TIOCM_RI) && |
| 835 | old.rng != new.rng) |
| 836 | break; |
| 837 | |
| 838 | add_wait_queue(&acm->wioctl, &wait); |
| 839 | set_current_state(TASK_INTERRUPTIBLE); |
| 840 | schedule(); |
| 841 | remove_wait_queue(&acm->wioctl, &wait); |
| 842 | if (acm->disconnected) { |
| 843 | if (arg & TIOCM_CD) |
| 844 | break; |
| 845 | else |
| 846 | rv = -ENODEV; |
| 847 | } else { |
| 848 | if (signal_pending(current)) |
| 849 | rv = -ERESTARTSYS; |
| 850 | } |
| 851 | } while (!rv); |
| 852 | |
| 853 | |
| 854 | |
| 855 | return rv; |
| 856 | } |
| 857 | |
Oliver Neukum | 797ef13 | 2013-11-20 11:35:35 +0100 | [diff] [blame] | 858 | static int get_serial_usage(struct acm *acm, |
| 859 | struct serial_icounter_struct __user *count) |
| 860 | { |
| 861 | struct serial_icounter_struct icount; |
| 862 | int rv = 0; |
| 863 | |
| 864 | memset(&icount, 0, sizeof(icount)); |
| 865 | icount.dsr = acm->iocount.dsr; |
| 866 | icount.rng = acm->iocount.rng; |
| 867 | icount.dcd = acm->iocount.dcd; |
| 868 | icount.frame = acm->iocount.frame; |
| 869 | icount.overrun = acm->iocount.overrun; |
| 870 | icount.parity = acm->iocount.parity; |
| 871 | icount.brk = acm->iocount.brk; |
| 872 | |
| 873 | if (copy_to_user(count, &icount, sizeof(icount)) > 0) |
| 874 | rv = -EFAULT; |
| 875 | |
| 876 | return rv; |
| 877 | } |
| 878 | |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 879 | static int acm_tty_ioctl(struct tty_struct *tty, |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 880 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | { |
Oliver Neukum | 18c7572 | 2012-02-17 17:21:24 -0500 | [diff] [blame] | 882 | struct acm *acm = tty->driver_data; |
| 883 | int rv = -ENOIOCTLCMD; |
| 884 | |
| 885 | switch (cmd) { |
| 886 | case TIOCGSERIAL: /* gets serial port data */ |
| 887 | rv = get_serial_info(acm, (struct serial_struct __user *) arg); |
| 888 | break; |
Dan Williams | ba2d8ce | 2012-11-08 12:47:41 -0600 | [diff] [blame] | 889 | case TIOCSSERIAL: |
| 890 | rv = set_serial_info(acm, (struct serial_struct __user *) arg); |
| 891 | break; |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 892 | case TIOCMIWAIT: |
Oliver Neukum | 8fdbeb2 | 2013-11-20 11:35:36 +0100 | [diff] [blame] | 893 | rv = usb_autopm_get_interface(acm->control); |
| 894 | if (rv < 0) { |
| 895 | rv = -EIO; |
| 896 | break; |
| 897 | } |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 898 | rv = wait_serial_change(acm, arg); |
Oliver Neukum | 8fdbeb2 | 2013-11-20 11:35:36 +0100 | [diff] [blame] | 899 | usb_autopm_put_interface(acm->control); |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 900 | break; |
Oliver Neukum | 797ef13 | 2013-11-20 11:35:35 +0100 | [diff] [blame] | 901 | case TIOCGICOUNT: |
| 902 | rv = get_serial_usage(acm, (struct serial_icounter_struct __user *) arg); |
| 903 | break; |
Oliver Neukum | 18c7572 | 2012-02-17 17:21:24 -0500 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | } |
| 908 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 909 | static void acm_tty_set_termios(struct tty_struct *tty, |
| 910 | struct ktermios *termios_old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | { |
| 912 | struct acm *acm = tty->driver_data; |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 913 | struct ktermios *termios = &tty->termios; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | struct usb_cdc_line_coding newline; |
| 915 | int newctrl = acm->ctrlout; |
| 916 | |
Alan Cox | 9b80fee | 2009-09-19 13:13:23 -0700 | [diff] [blame] | 917 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
| 919 | newline.bParityType = termios->c_cflag & PARENB ? |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 920 | (termios->c_cflag & PARODD ? 1 : 2) + |
| 921 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; |
Nicolas Boullis | 301a29d | 2012-10-16 00:06:23 +0200 | [diff] [blame] | 922 | switch (termios->c_cflag & CSIZE) { |
| 923 | case CS5: |
| 924 | newline.bDataBits = 5; |
| 925 | break; |
| 926 | case CS6: |
| 927 | newline.bDataBits = 6; |
| 928 | break; |
| 929 | case CS7: |
| 930 | newline.bDataBits = 7; |
| 931 | break; |
| 932 | case CS8: |
| 933 | default: |
| 934 | newline.bDataBits = 8; |
| 935 | break; |
| 936 | } |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 937 | /* FIXME: Needs to clear unsupported bits in the termios */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
| 939 | |
| 940 | if (!newline.dwDTERate) { |
| 941 | newline.dwDTERate = acm->line.dwDTERate; |
| 942 | newctrl &= ~ACM_CTRL_DTR; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 943 | } else |
| 944 | newctrl |= ACM_CTRL_DTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | |
| 946 | if (newctrl != acm->ctrlout) |
| 947 | acm_set_control(acm, acm->ctrlout = newctrl); |
| 948 | |
| 949 | if (memcmp(&acm->line, &newline, sizeof newline)) { |
| 950 | memcpy(&acm->line, &newline, sizeof newline); |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 951 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
| 952 | __func__, |
| 953 | le32_to_cpu(newline.dwDTERate), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | newline.bCharFormat, newline.bParityType, |
| 955 | newline.bDataBits); |
| 956 | acm_set_line(acm, &acm->line); |
| 957 | } |
| 958 | } |
| 959 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 960 | static const struct tty_port_operations acm_port_ops = { |
| 961 | .shutdown = acm_port_shutdown, |
| 962 | .activate = acm_port_activate, |
| 963 | .destruct = acm_port_destruct, |
| 964 | }; |
| 965 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | /* |
| 967 | * USB probe and disconnect routines. |
| 968 | */ |
| 969 | |
Oliver Neukum | 830f402 | 2008-06-25 14:17:16 +0200 | [diff] [blame] | 970 | /* Little helpers: write/read buffers free */ |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 971 | static void acm_write_buffers_free(struct acm *acm) |
| 972 | { |
| 973 | int i; |
| 974 | struct acm_wb *wb; |
Oliver Neukum | a496c64 | 2008-10-21 10:39:04 +0200 | [diff] [blame] | 975 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 976 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 977 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 978 | usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 979 | } |
| 980 | |
Oliver Neukum | 830f402 | 2008-06-25 14:17:16 +0200 | [diff] [blame] | 981 | static void acm_read_buffers_free(struct acm *acm) |
| 982 | { |
| 983 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
Johan Hovold | dab54c9 | 2011-03-22 11:12:21 +0100 | [diff] [blame] | 984 | int i; |
Oliver Neukum | 830f402 | 2008-06-25 14:17:16 +0200 | [diff] [blame] | 985 | |
Johan Hovold | dab54c9 | 2011-03-22 11:12:21 +0100 | [diff] [blame] | 986 | for (i = 0; i < acm->rx_buflimit; i++) |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 987 | usb_free_coherent(usb_dev, acm->readsize, |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 988 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
Oliver Neukum | 830f402 | 2008-06-25 14:17:16 +0200 | [diff] [blame] | 989 | } |
| 990 | |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 991 | /* Little helper: write buffers allocate */ |
| 992 | static int acm_write_buffers_alloc(struct acm *acm) |
| 993 | { |
| 994 | int i; |
| 995 | struct acm_wb *wb; |
| 996 | |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 997 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 998 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 999 | &wb->dmah); |
| 1000 | if (!wb->buf) { |
| 1001 | while (i != 0) { |
| 1002 | --i; |
| 1003 | --wb; |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 1004 | usb_free_coherent(acm->dev, acm->writesize, |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 1005 | wb->buf, wb->dmah); |
| 1006 | } |
| 1007 | return -ENOMEM; |
| 1008 | } |
| 1009 | } |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 1013 | static int acm_probe(struct usb_interface *intf, |
| 1014 | const struct usb_device_id *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | { |
| 1016 | struct usb_cdc_union_desc *union_header = NULL; |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1017 | struct usb_cdc_country_functional_desc *cfd = NULL; |
David Brownell | c6dbf55 | 2008-04-13 14:00:44 -0700 | [diff] [blame] | 1018 | unsigned char *buffer = intf->altsetting->extra; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | int buflen = intf->altsetting->extralen; |
| 1020 | struct usb_interface *control_interface; |
| 1021 | struct usb_interface *data_interface; |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1022 | struct usb_endpoint_descriptor *epctrl = NULL; |
| 1023 | struct usb_endpoint_descriptor *epread = NULL; |
| 1024 | struct usb_endpoint_descriptor *epwrite = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
| 1026 | struct acm *acm; |
| 1027 | int minor; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1028 | int ctrlsize, readsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | u8 *buf; |
| 1030 | u8 ac_management_function = 0; |
| 1031 | u8 call_management_function = 0; |
| 1032 | int call_interface_num = -1; |
Erik Slagter | fd5054c | 2011-05-11 12:06:55 +0200 | [diff] [blame] | 1033 | int data_interface_num = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | unsigned long quirks; |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1035 | int num_rx_buf; |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1036 | int i; |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1037 | int combined_interfaces = 0; |
Alexey Khoroshilov | c93d819 | 2013-03-16 01:30:32 +0400 | [diff] [blame] | 1038 | struct device *tty_dev; |
| 1039 | int rv = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1041 | /* normal quirks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | quirks = (unsigned long)id->driver_info; |
Dmitry Torokhov | 1614265 | 2013-02-02 11:02:14 -0800 | [diff] [blame] | 1043 | |
| 1044 | if (quirks == IGNORE_DEVICE) |
| 1045 | return -ENODEV; |
| 1046 | |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1047 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
| 1048 | |
| 1049 | /* handle quirks deadly to normal probing*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | if (quirks == NO_UNION_NORMAL) { |
| 1051 | data_interface = usb_ifnum_to_if(usb_dev, 1); |
| 1052 | control_interface = usb_ifnum_to_if(usb_dev, 0); |
| 1053 | goto skip_normal_probe; |
| 1054 | } |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1055 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | /* normal probing*/ |
| 1057 | if (!buffer) { |
Greg Kroah-Hartman | 9908a32 | 2008-08-14 09:37:34 -0700 | [diff] [blame] | 1058 | dev_err(&intf->dev, "Weird descriptor references\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | return -EINVAL; |
| 1060 | } |
| 1061 | |
| 1062 | if (!buflen) { |
Toby Gray | 577045c | 2010-09-02 10:46:20 +0100 | [diff] [blame] | 1063 | if (intf->cur_altsetting->endpoint && |
| 1064 | intf->cur_altsetting->endpoint->extralen && |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1065 | intf->cur_altsetting->endpoint->extra) { |
| 1066 | dev_dbg(&intf->dev, |
| 1067 | "Seeking extra descriptors on endpoint\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | buflen = intf->cur_altsetting->endpoint->extralen; |
| 1069 | buffer = intf->cur_altsetting->endpoint->extra; |
| 1070 | } else { |
Greg Kroah-Hartman | 9908a32 | 2008-08-14 09:37:34 -0700 | [diff] [blame] | 1071 | dev_err(&intf->dev, |
| 1072 | "Zero length descriptor references\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | return -EINVAL; |
| 1074 | } |
| 1075 | } |
| 1076 | |
| 1077 | while (buflen > 0) { |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1078 | if (buffer[1] != USB_DT_CS_INTERFACE) { |
Greg Kroah-Hartman | 9908a32 | 2008-08-14 09:37:34 -0700 | [diff] [blame] | 1079 | dev_err(&intf->dev, "skipping garbage\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | goto next_desc; |
| 1081 | } |
| 1082 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1083 | switch (buffer[2]) { |
| 1084 | case USB_CDC_UNION_TYPE: /* we've found it */ |
| 1085 | if (union_header) { |
| 1086 | dev_err(&intf->dev, "More than one " |
| 1087 | "union descriptor, skipping ...\n"); |
| 1088 | goto next_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | } |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1090 | union_header = (struct usb_cdc_union_desc *)buffer; |
| 1091 | break; |
| 1092 | case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ |
| 1093 | cfd = (struct usb_cdc_country_functional_desc *)buffer; |
| 1094 | break; |
| 1095 | case USB_CDC_HEADER_TYPE: /* maybe check version */ |
| 1096 | break; /* for now we ignore it */ |
| 1097 | case USB_CDC_ACM_TYPE: |
| 1098 | ac_management_function = buffer[3]; |
| 1099 | break; |
| 1100 | case USB_CDC_CALL_MANAGEMENT_TYPE: |
| 1101 | call_management_function = buffer[3]; |
| 1102 | call_interface_num = buffer[4]; |
Jeffrin Jose | 02f824a | 2012-07-01 21:25:16 +0530 | [diff] [blame] | 1103 | if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3) |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1104 | dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n"); |
| 1105 | break; |
| 1106 | default: |
| 1107 | /* there are LOTS more CDC descriptors that |
| 1108 | * could legitimately be found here. |
| 1109 | */ |
| 1110 | dev_dbg(&intf->dev, "Ignoring descriptor: " |
| 1111 | "type %02x, length %d\n", |
| 1112 | buffer[2], buffer[0]); |
| 1113 | break; |
| 1114 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | next_desc: |
| 1116 | buflen -= buffer[0]; |
| 1117 | buffer += buffer[0]; |
| 1118 | } |
| 1119 | |
| 1120 | if (!union_header) { |
| 1121 | if (call_interface_num > 0) { |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1122 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
Erik Slagter | fd5054c | 2011-05-11 12:06:55 +0200 | [diff] [blame] | 1123 | /* quirks for Droids MuIn LCD */ |
| 1124 | if (quirks & NO_DATA_INTERFACE) |
| 1125 | data_interface = usb_ifnum_to_if(usb_dev, 0); |
| 1126 | else |
| 1127 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | control_interface = intf; |
| 1129 | } else { |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1130 | if (intf->cur_altsetting->desc.bNumEndpoints != 3) { |
| 1131 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); |
| 1132 | return -ENODEV; |
| 1133 | } else { |
| 1134 | dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); |
| 1135 | combined_interfaces = 1; |
| 1136 | control_interface = data_interface = intf; |
| 1137 | goto look_for_collapsed_interface; |
| 1138 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | } |
| 1140 | } else { |
| 1141 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); |
| 1142 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); |
| 1143 | if (!control_interface || !data_interface) { |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1144 | dev_dbg(&intf->dev, "no interfaces\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | return -ENODEV; |
| 1146 | } |
| 1147 | } |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | if (data_interface_num != call_interface_num) |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1150 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1152 | if (control_interface == data_interface) { |
| 1153 | /* some broken devices designed for windows work this way */ |
| 1154 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); |
| 1155 | combined_interfaces = 1; |
| 1156 | /* a popular other OS doesn't use it */ |
| 1157 | quirks |= NO_CAP_LINE; |
| 1158 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { |
| 1159 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); |
| 1160 | return -EINVAL; |
| 1161 | } |
| 1162 | look_for_collapsed_interface: |
| 1163 | for (i = 0; i < 3; i++) { |
| 1164 | struct usb_endpoint_descriptor *ep; |
| 1165 | ep = &data_interface->cur_altsetting->endpoint[i].desc; |
| 1166 | |
| 1167 | if (usb_endpoint_is_int_in(ep)) |
| 1168 | epctrl = ep; |
| 1169 | else if (usb_endpoint_is_bulk_out(ep)) |
| 1170 | epwrite = ep; |
| 1171 | else if (usb_endpoint_is_bulk_in(ep)) |
| 1172 | epread = ep; |
| 1173 | else |
| 1174 | return -EINVAL; |
| 1175 | } |
| 1176 | if (!epctrl || !epread || !epwrite) |
| 1177 | return -ENODEV; |
| 1178 | else |
| 1179 | goto made_compressed_probe; |
| 1180 | } |
| 1181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | skip_normal_probe: |
| 1183 | |
| 1184 | /*workaround for switched interfaces */ |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1185 | if (data_interface->cur_altsetting->desc.bInterfaceClass |
| 1186 | != CDC_DATA_INTERFACE_TYPE) { |
| 1187 | if (control_interface->cur_altsetting->desc.bInterfaceClass |
| 1188 | == CDC_DATA_INTERFACE_TYPE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | struct usb_interface *t; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1190 | dev_dbg(&intf->dev, |
| 1191 | "Your device has switched interfaces.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | t = control_interface; |
| 1193 | control_interface = data_interface; |
| 1194 | data_interface = t; |
| 1195 | } else { |
| 1196 | return -EINVAL; |
| 1197 | } |
| 1198 | } |
Alan Stern | 74da5d6 | 2007-08-02 13:29:10 -0400 | [diff] [blame] | 1199 | |
| 1200 | /* Accept probe requests only for the control interface */ |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1201 | if (!combined_interfaces && intf != control_interface) |
Alan Stern | 74da5d6 | 2007-08-02 13:29:10 -0400 | [diff] [blame] | 1202 | return -ENODEV; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1203 | |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1204 | if (!combined_interfaces && usb_interface_claimed(data_interface)) { |
| 1205 | /* valid in this context */ |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1206 | dev_dbg(&intf->dev, "The data interface isn't available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | return -EBUSY; |
| 1208 | } |
| 1209 | |
| 1210 | |
Sven Schnelle | 99f347c | 2012-08-17 21:43:43 +0200 | [diff] [blame] | 1211 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 || |
| 1212 | control_interface->cur_altsetting->desc.bNumEndpoints == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | return -EINVAL; |
| 1214 | |
| 1215 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; |
| 1216 | epread = &data_interface->cur_altsetting->endpoint[0].desc; |
| 1217 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; |
| 1218 | |
| 1219 | |
| 1220 | /* workaround for switched endpoints */ |
Luiz Fernando N. Capitulino | 45aea70 | 2006-10-26 13:02:48 -0300 | [diff] [blame] | 1221 | if (!usb_endpoint_dir_in(epread)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | /* descriptors are swapped */ |
| 1223 | struct usb_endpoint_descriptor *t; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1224 | dev_dbg(&intf->dev, |
| 1225 | "The data interface has switched endpoints\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | t = epread; |
| 1227 | epread = epwrite; |
| 1228 | epwrite = t; |
| 1229 | } |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1230 | made_compressed_probe: |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 1231 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1233 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
| 1234 | if (acm == NULL) { |
Johan Hovold | 255ab56 | 2011-03-22 11:12:13 +0100 | [diff] [blame] | 1235 | dev_err(&intf->dev, "out of memory (acm kzalloc)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | goto alloc_fail; |
| 1237 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1239 | minor = acm_alloc_minor(acm); |
| 1240 | if (minor == ACM_TTY_MINORS) { |
| 1241 | dev_err(&intf->dev, "no more free acm devices\n"); |
| 1242 | kfree(acm); |
| 1243 | return -ENODEV; |
| 1244 | } |
| 1245 | |
Kuninori Morimoto | 29cc889 | 2011-08-23 03:12:03 -0700 | [diff] [blame] | 1246 | ctrlsize = usb_endpoint_maxp(epctrl); |
| 1247 | readsize = usb_endpoint_maxp(epread) * |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1248 | (quirks == SINGLE_RX_URB ? 1 : 2); |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1249 | acm->combined_interfaces = combined_interfaces; |
Kuninori Morimoto | 29cc889 | 2011-08-23 03:12:03 -0700 | [diff] [blame] | 1250 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | acm->control = control_interface; |
| 1252 | acm->data = data_interface; |
| 1253 | acm->minor = minor; |
| 1254 | acm->dev = usb_dev; |
| 1255 | acm->ctrl_caps = ac_management_function; |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1256 | if (quirks & NO_CAP_LINE) |
| 1257 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | acm->ctrlsize = ctrlsize; |
| 1259 | acm->readsize = readsize; |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1260 | acm->rx_buflimit = num_rx_buf; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 1261 | INIT_WORK(&acm->work, acm_softint); |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 1262 | init_waitqueue_head(&acm->wioctl); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 1263 | spin_lock_init(&acm->write_lock); |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1264 | spin_lock_init(&acm->read_lock); |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1265 | mutex_init(&acm->mutex); |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1266 | acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); |
Oliver Neukum | cf7fdd5 | 2009-08-04 23:52:09 +0200 | [diff] [blame] | 1267 | acm->is_int_ep = usb_endpoint_xfer_int(epread); |
| 1268 | if (acm->is_int_ep) |
| 1269 | acm->bInterval = epread->bInterval; |
Alan Cox | 739e028 | 2009-06-11 12:27:50 +0100 | [diff] [blame] | 1270 | tty_port_init(&acm->port); |
| 1271 | acm->port.ops = &acm_port_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 1273 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | if (!buf) { |
Johan Hovold | 255ab56 | 2011-03-22 11:12:13 +0100 | [diff] [blame] | 1275 | dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | goto alloc_fail2; |
| 1277 | } |
| 1278 | acm->ctrl_buffer = buf; |
| 1279 | |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 1280 | if (acm_write_buffers_alloc(acm) < 0) { |
Johan Hovold | 255ab56 | 2011-03-22 11:12:13 +0100 | [diff] [blame] | 1281 | dev_err(&intf->dev, "out of memory (write buffer alloc)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | goto alloc_fail4; |
| 1283 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
| 1285 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); |
| 1286 | if (!acm->ctrlurb) { |
Johan Hovold | 255ab56 | 2011-03-22 11:12:13 +0100 | [diff] [blame] | 1287 | dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | goto alloc_fail5; |
| 1289 | } |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1290 | for (i = 0; i < num_rx_buf; i++) { |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1291 | struct acm_rb *rb = &(acm->read_buffers[i]); |
| 1292 | struct urb *urb; |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1293 | |
Johan Hovold | 74f5e1b | 2011-03-22 11:12:23 +0100 | [diff] [blame] | 1294 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
| 1295 | &rb->dma); |
| 1296 | if (!rb->base) { |
| 1297 | dev_err(&intf->dev, "out of memory " |
| 1298 | "(read bufs usb_alloc_coherent)\n"); |
| 1299 | goto alloc_fail6; |
| 1300 | } |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1301 | rb->index = i; |
| 1302 | rb->instance = acm; |
Johan Hovold | 74f5e1b | 2011-03-22 11:12:23 +0100 | [diff] [blame] | 1303 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1304 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1305 | if (!urb) { |
Johan Hovold | 255ab56 | 2011-03-22 11:12:13 +0100 | [diff] [blame] | 1306 | dev_err(&intf->dev, |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1307 | "out of memory (read urbs usb_alloc_urb)\n"); |
Axel Lin | c2572b7 | 2010-05-31 08:04:47 +0800 | [diff] [blame] | 1308 | goto alloc_fail6; |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1309 | } |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1310 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 1311 | urb->transfer_dma = rb->dma; |
| 1312 | if (acm->is_int_ep) { |
| 1313 | usb_fill_int_urb(urb, acm->dev, |
| 1314 | acm->rx_endpoint, |
| 1315 | rb->base, |
| 1316 | acm->readsize, |
| 1317 | acm_read_bulk_callback, rb, |
| 1318 | acm->bInterval); |
| 1319 | } else { |
| 1320 | usb_fill_bulk_urb(urb, acm->dev, |
| 1321 | acm->rx_endpoint, |
| 1322 | rb->base, |
| 1323 | acm->readsize, |
| 1324 | acm_read_bulk_callback, rb); |
| 1325 | } |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1326 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1327 | acm->read_urbs[i] = urb; |
| 1328 | __set_bit(i, &acm->read_urbs_free); |
David Kubicek | 61a87ad | 2005-11-01 18:51:34 +0100 | [diff] [blame] | 1329 | } |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1330 | for (i = 0; i < ACM_NW; i++) { |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 1331 | struct acm_wb *snd = &(acm->wb[i]); |
| 1332 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1333 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
| 1334 | if (snd->urb == NULL) { |
Johan Hovold | 255ab56 | 2011-03-22 11:12:13 +0100 | [diff] [blame] | 1335 | dev_err(&intf->dev, |
Johan Hovold | 59d7fec | 2011-03-22 11:12:12 +0100 | [diff] [blame] | 1336 | "out of memory (write urbs usb_alloc_urb)\n"); |
Johan Hovold | 74f5e1b | 2011-03-22 11:12:23 +0100 | [diff] [blame] | 1337 | goto alloc_fail7; |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 1338 | } |
| 1339 | |
Arseniy Lartsev | 5186ffe | 2009-07-01 16:27:26 +0400 | [diff] [blame] | 1340 | if (usb_endpoint_xfer_int(epwrite)) |
| 1341 | usb_fill_int_urb(snd->urb, usb_dev, |
Ming Lei | c521118 | 2012-10-16 21:21:21 +0800 | [diff] [blame] | 1342 | usb_sndintpipe(usb_dev, epwrite->bEndpointAddress), |
Arseniy Lartsev | 5186ffe | 2009-07-01 16:27:26 +0400 | [diff] [blame] | 1343 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); |
| 1344 | else |
| 1345 | usb_fill_bulk_urb(snd->urb, usb_dev, |
| 1346 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), |
| 1347 | NULL, acm->writesize, acm_write_bulk, snd); |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 1348 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 1349 | snd->instance = acm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | } |
| 1351 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1352 | usb_set_intfdata(intf, acm); |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1353 | |
| 1354 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); |
| 1355 | if (i < 0) |
Johan Hovold | 74f5e1b | 2011-03-22 11:12:23 +0100 | [diff] [blame] | 1356 | goto alloc_fail7; |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1357 | |
| 1358 | if (cfd) { /* export the country data */ |
| 1359 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); |
| 1360 | if (!acm->country_codes) |
| 1361 | goto skip_countries; |
| 1362 | acm->country_code_size = cfd->bLength - 4; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1363 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
| 1364 | cfd->bLength - 4); |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1365 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
| 1366 | |
| 1367 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); |
| 1368 | if (i < 0) { |
| 1369 | kfree(acm->country_codes); |
Julia Lawall | e7c8e86 | 2011-12-23 14:02:55 +0100 | [diff] [blame] | 1370 | acm->country_codes = NULL; |
| 1371 | acm->country_code_size = 0; |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1372 | goto skip_countries; |
| 1373 | } |
| 1374 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1375 | i = device_create_file(&intf->dev, |
| 1376 | &dev_attr_iCountryCodeRelDate); |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1377 | if (i < 0) { |
Axel Lin | c2572b7 | 2010-05-31 08:04:47 +0800 | [diff] [blame] | 1378 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1379 | kfree(acm->country_codes); |
Julia Lawall | e7c8e86 | 2011-12-23 14:02:55 +0100 | [diff] [blame] | 1380 | acm->country_codes = NULL; |
| 1381 | acm->country_code_size = 0; |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1382 | goto skip_countries; |
| 1383 | } |
| 1384 | } |
| 1385 | |
| 1386 | skip_countries: |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1387 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1388 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
| 1389 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, |
| 1390 | /* works around buggy devices */ |
Felipe Balbi | d102e78 | 2013-07-01 11:23:24 +0300 | [diff] [blame] | 1391 | epctrl->bInterval ? epctrl->bInterval : 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| 1393 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; |
| 1394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
| 1396 | |
| 1397 | acm_set_control(acm, acm->ctrlout); |
| 1398 | |
| 1399 | acm->line.dwDTERate = cpu_to_le32(9600); |
| 1400 | acm->line.bDataBits = 8; |
| 1401 | acm_set_line(acm, &acm->line); |
| 1402 | |
| 1403 | usb_driver_claim_interface(&acm_driver, data_interface, acm); |
David Brownell | 672c4e1 | 2008-08-06 18:41:12 -0700 | [diff] [blame] | 1404 | usb_set_intfdata(data_interface, acm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | |
brian@murphy.dk | 83ef344 | 2005-06-29 16:53:29 -0700 | [diff] [blame] | 1406 | usb_get_intf(control_interface); |
Alexey Khoroshilov | c93d819 | 2013-03-16 01:30:32 +0400 | [diff] [blame] | 1407 | tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 1408 | &control_interface->dev); |
Alexey Khoroshilov | c93d819 | 2013-03-16 01:30:32 +0400 | [diff] [blame] | 1409 | if (IS_ERR(tty_dev)) { |
| 1410 | rv = PTR_ERR(tty_dev); |
| 1411 | goto alloc_fail8; |
| 1412 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1414 | return 0; |
Alexey Khoroshilov | c93d819 | 2013-03-16 01:30:32 +0400 | [diff] [blame] | 1415 | alloc_fail8: |
| 1416 | if (acm->country_codes) { |
| 1417 | device_remove_file(&acm->control->dev, |
| 1418 | &dev_attr_wCountryCodes); |
| 1419 | device_remove_file(&acm->control->dev, |
| 1420 | &dev_attr_iCountryCodeRelDate); |
| 1421 | } |
| 1422 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
Johan Hovold | 74f5e1b | 2011-03-22 11:12:23 +0100 | [diff] [blame] | 1423 | alloc_fail7: |
Alexey Khoroshilov | c93d819 | 2013-03-16 01:30:32 +0400 | [diff] [blame] | 1424 | usb_set_intfdata(intf, NULL); |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 1425 | for (i = 0; i < ACM_NW; i++) |
| 1426 | usb_free_urb(acm->wb[i].urb); |
Axel Lin | c2572b7 | 2010-05-31 08:04:47 +0800 | [diff] [blame] | 1427 | alloc_fail6: |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1428 | for (i = 0; i < num_rx_buf; i++) |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1429 | usb_free_urb(acm->read_urbs[i]); |
Johan Hovold | 74f5e1b | 2011-03-22 11:12:23 +0100 | [diff] [blame] | 1430 | acm_read_buffers_free(acm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | usb_free_urb(acm->ctrlurb); |
| 1432 | alloc_fail5: |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 1433 | acm_write_buffers_free(acm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | alloc_fail4: |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 1435 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | alloc_fail2: |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1437 | acm_release_minor(acm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | kfree(acm); |
| 1439 | alloc_fail: |
Alexey Khoroshilov | c93d819 | 2013-03-16 01:30:32 +0400 | [diff] [blame] | 1440 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | } |
| 1442 | |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1443 | static void stop_data_traffic(struct acm *acm) |
| 1444 | { |
| 1445 | int i; |
Johan Hovold | a5cc7ef | 2011-03-22 11:12:15 +0100 | [diff] [blame] | 1446 | |
| 1447 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1448 | |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1449 | usb_kill_urb(acm->ctrlurb); |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1450 | for (i = 0; i < ACM_NW; i++) |
David Engraf | e4cf3aa | 2008-03-20 10:01:34 +0100 | [diff] [blame] | 1451 | usb_kill_urb(acm->wb[i].urb); |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1452 | for (i = 0; i < acm->rx_buflimit; i++) |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1453 | usb_kill_urb(acm->read_urbs[i]); |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1454 | |
| 1455 | cancel_work_sync(&acm->work); |
| 1456 | } |
| 1457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | static void acm_disconnect(struct usb_interface *intf) |
| 1459 | { |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1460 | struct acm *acm = usb_get_intfdata(intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 1462 | struct tty_struct *tty; |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1463 | int i; |
| 1464 | |
| 1465 | dev_dbg(&intf->dev, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
David Brownell | 672c4e1 | 2008-08-06 18:41:12 -0700 | [diff] [blame] | 1467 | /* sibling interface is already cleaning up */ |
| 1468 | if (!acm) |
Oliver Neukum | 86067eea | 2006-01-08 12:39:13 +0100 | [diff] [blame] | 1469 | return; |
David Brownell | 672c4e1 | 2008-08-06 18:41:12 -0700 | [diff] [blame] | 1470 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1471 | mutex_lock(&acm->mutex); |
| 1472 | acm->disconnected = true; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1473 | if (acm->country_codes) { |
Alan Stern | 74da5d6 | 2007-08-02 13:29:10 -0400 | [diff] [blame] | 1474 | device_remove_file(&acm->control->dev, |
| 1475 | &dev_attr_wCountryCodes); |
| 1476 | device_remove_file(&acm->control->dev, |
| 1477 | &dev_attr_iCountryCodeRelDate); |
Oliver Neukum | c4cabd2 | 2007-02-27 15:28:55 +0100 | [diff] [blame] | 1478 | } |
Oliver Neukum | 5a6a62b | 2013-11-20 11:35:34 +0100 | [diff] [blame] | 1479 | wake_up_all(&acm->wioctl); |
Alan Stern | 74da5d6 | 2007-08-02 13:29:10 -0400 | [diff] [blame] | 1480 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
Oliver Neukum | 86067eea | 2006-01-08 12:39:13 +0100 | [diff] [blame] | 1481 | usb_set_intfdata(acm->control, NULL); |
| 1482 | usb_set_intfdata(acm->data, NULL); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1483 | mutex_unlock(&acm->mutex); |
| 1484 | |
| 1485 | tty = tty_port_tty_get(&acm->port); |
| 1486 | if (tty) { |
| 1487 | tty_vhangup(tty); |
| 1488 | tty_kref_put(tty); |
| 1489 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1491 | stop_data_traffic(acm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | |
Johan Hovold | cb25505 | 2013-03-19 09:21:06 +0100 | [diff] [blame] | 1493 | tty_unregister_device(acm_tty_driver, acm->minor); |
| 1494 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1495 | usb_free_urb(acm->ctrlurb); |
| 1496 | for (i = 0; i < ACM_NW; i++) |
| 1497 | usb_free_urb(acm->wb[i].urb); |
| 1498 | for (i = 0; i < acm->rx_buflimit; i++) |
| 1499 | usb_free_urb(acm->read_urbs[i]); |
Oliver Neukum | 884b600 | 2005-04-21 21:28:02 +0200 | [diff] [blame] | 1500 | acm_write_buffers_free(acm); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1501 | usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
Oliver Neukum | 830f402 | 2008-06-25 14:17:16 +0200 | [diff] [blame] | 1502 | acm_read_buffers_free(acm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | |
Oliver Neukum | a2bfb4a | 2009-05-16 21:13:19 +0200 | [diff] [blame] | 1504 | if (!acm->combined_interfaces) |
| 1505 | usb_driver_release_interface(&acm_driver, intf == acm->control ? |
Oliver Neukum | 830f402 | 2008-06-25 14:17:16 +0200 | [diff] [blame] | 1506 | acm->data : acm->control); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1508 | tty_port_put(&acm->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | } |
| 1510 | |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1511 | #ifdef CONFIG_PM |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1512 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
| 1513 | { |
| 1514 | struct acm *acm = usb_get_intfdata(intf); |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 1515 | int cnt; |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1516 | |
Alan Stern | 5b1b0b8 | 2011-08-19 23:49:48 +0200 | [diff] [blame] | 1517 | if (PMSG_IS_AUTO(message)) { |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 1518 | int b; |
| 1519 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1520 | spin_lock_irq(&acm->write_lock); |
| 1521 | b = acm->transmitting; |
| 1522 | spin_unlock_irq(&acm->write_lock); |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 1523 | if (b) |
| 1524 | return -EBUSY; |
| 1525 | } |
| 1526 | |
| 1527 | spin_lock_irq(&acm->read_lock); |
| 1528 | spin_lock(&acm->write_lock); |
| 1529 | cnt = acm->susp_count++; |
| 1530 | spin_unlock(&acm->write_lock); |
| 1531 | spin_unlock_irq(&acm->read_lock); |
| 1532 | |
| 1533 | if (cnt) |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1534 | return 0; |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1535 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1536 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1537 | stop_data_traffic(acm); |
| 1538 | |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1539 | return 0; |
| 1540 | } |
| 1541 | |
| 1542 | static int acm_resume(struct usb_interface *intf) |
| 1543 | { |
| 1544 | struct acm *acm = usb_get_intfdata(intf); |
Oliver Neukum | 97d35f9 | 2009-12-16 17:05:57 +0100 | [diff] [blame] | 1545 | struct acm_wb *wb; |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1546 | int rv = 0; |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 1547 | int cnt; |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1548 | |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 1549 | spin_lock_irq(&acm->read_lock); |
| 1550 | acm->susp_count -= 1; |
| 1551 | cnt = acm->susp_count; |
| 1552 | spin_unlock_irq(&acm->read_lock); |
| 1553 | |
| 1554 | if (cnt) |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1555 | return 0; |
| 1556 | |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1557 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1558 | rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); |
Oliver Neukum | 97d35f9 | 2009-12-16 17:05:57 +0100 | [diff] [blame] | 1559 | |
| 1560 | spin_lock_irq(&acm->write_lock); |
| 1561 | if (acm->delayed_wb) { |
| 1562 | wb = acm->delayed_wb; |
| 1563 | acm->delayed_wb = NULL; |
| 1564 | spin_unlock_irq(&acm->write_lock); |
Oliver Neukum | f073092 | 2010-03-03 00:37:56 +0100 | [diff] [blame] | 1565 | acm_start_wb(acm, wb); |
Oliver Neukum | 97d35f9 | 2009-12-16 17:05:57 +0100 | [diff] [blame] | 1566 | } else { |
| 1567 | spin_unlock_irq(&acm->write_lock); |
| 1568 | } |
| 1569 | |
| 1570 | /* |
| 1571 | * delayed error checking because we must |
| 1572 | * do the write path at all cost |
| 1573 | */ |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1574 | if (rv < 0) |
Oliver Neukum | 11ea859 | 2008-06-20 11:25:57 +0200 | [diff] [blame] | 1575 | goto err_out; |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1576 | |
Johan Hovold | 088c64f | 2011-03-25 11:06:02 +0100 | [diff] [blame] | 1577 | rv = acm_submit_read_urbs(acm, GFP_NOIO); |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1578 | } |
| 1579 | |
| 1580 | err_out: |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1581 | return rv; |
| 1582 | } |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1583 | |
Francesco Lavra | a91b0c5 | 2009-12-08 09:54:11 +0100 | [diff] [blame] | 1584 | static int acm_reset_resume(struct usb_interface *intf) |
| 1585 | { |
| 1586 | struct acm *acm = usb_get_intfdata(intf); |
Francesco Lavra | a91b0c5 | 2009-12-08 09:54:11 +0100 | [diff] [blame] | 1587 | |
Jiri Slaby | aa27a09 | 2013-03-07 13:12:30 +0100 | [diff] [blame] | 1588 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) |
| 1589 | tty_port_tty_hangup(&acm->port, false); |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1590 | |
Francesco Lavra | a91b0c5 | 2009-12-08 09:54:11 +0100 | [diff] [blame] | 1591 | return acm_resume(intf); |
| 1592 | } |
| 1593 | |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1594 | #endif /* CONFIG_PM */ |
Adrian Taylor | c1479a9 | 2009-11-19 10:35:33 +0000 | [diff] [blame] | 1595 | |
| 1596 | #define NOKIA_PCSUITE_ACM_INFO(x) \ |
| 1597 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ |
| 1598 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ |
| 1599 | USB_CDC_ACM_PROTO_VENDOR) |
| 1600 | |
Toby Gray | 4035e45 | 2010-09-01 16:01:19 +0100 | [diff] [blame] | 1601 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
| 1602 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ |
| 1603 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ |
| 1604 | USB_CDC_ACM_PROTO_VENDOR) |
| 1605 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | /* |
| 1607 | * USB driver structure. |
| 1608 | */ |
| 1609 | |
Németh Márton | 6ef4852 | 2010-01-10 15:33:45 +0100 | [diff] [blame] | 1610 | static const struct usb_device_id acm_ids[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | /* quirky and broken devices */ |
David Cluytens | 3b59d16 | 2013-12-03 14:18:57 +0100 | [diff] [blame] | 1612 | { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */ |
| 1613 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ |
| 1615 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1616 | }, |
Andrey Arapov | b0e2a70 | 2007-07-04 17:11:42 +0200 | [diff] [blame] | 1617 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
| 1618 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1619 | }, |
Andrew Lunn | 0f9c7b4a | 2008-12-23 17:31:23 +0100 | [diff] [blame] | 1620 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
| 1621 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1622 | }, |
Masahito Omote | 8753e65 | 2005-07-29 12:17:25 -0700 | [diff] [blame] | 1623 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
| 1624 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1625 | }, |
Chris Malley | 91a9c92 | 2006-10-03 10:08:28 +0100 | [diff] [blame] | 1626 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
| 1627 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1628 | }, |
Alan Cox | 7abcf20 | 2009-04-06 17:35:01 +0100 | [diff] [blame] | 1629 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
| 1630 | .driver_info = SINGLE_RX_URB, |
| 1631 | }, |
Oliver Neukum | 8647894 | 2006-05-13 22:50:47 +0200 | [diff] [blame] | 1632 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
| 1633 | .driver_info = SINGLE_RX_URB, /* firmware bug */ |
| 1634 | }, |
Oliver Neukum | 3dd2ae8 | 2006-06-23 09:14:17 +0200 | [diff] [blame] | 1635 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
| 1636 | .driver_info = SINGLE_RX_URB, /* firmware bug */ |
| 1637 | }, |
Oliver Neukum | 9be8456 | 2007-02-12 08:50:03 +0100 | [diff] [blame] | 1638 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
| 1639 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1640 | }, |
Iain McFarlane | 6149ed5 | 2008-05-04 00:13:49 +0100 | [diff] [blame] | 1641 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
| 1642 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1643 | }, |
Eric Sandeen | c8fd2c3 | 2008-08-14 08:25:40 -0500 | [diff] [blame] | 1644 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
| 1645 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1646 | }, |
Alan Cox | c89c60e | 2009-01-11 19:53:10 +0000 | [diff] [blame] | 1647 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
| 1648 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1649 | }, |
Xiao Kaijian | cab98a0 | 2009-05-08 00:48:23 +0800 | [diff] [blame] | 1650 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
| 1651 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ |
| 1652 | }, |
Dmitriy Taychenachev | 155df65 | 2009-02-25 12:36:51 +0800 | [diff] [blame] | 1653 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
| 1654 | }, |
Krzysztof Hałasa | 6abff5d | 2011-12-12 14:51:00 +0100 | [diff] [blame] | 1655 | /* Motorola H24 HSPA module: */ |
| 1656 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ |
Michael Ulbricht | 895d240 | 2014-03-25 10:34:18 +0100 | [diff] [blame] | 1657 | { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */ |
| 1658 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1659 | }, |
| 1660 | { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */ |
| 1661 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1662 | }, |
| 1663 | { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */ |
| 1664 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1665 | }, |
| 1666 | { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */ |
| 1667 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1668 | }, |
| 1669 | { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */ |
| 1670 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1671 | }, |
| 1672 | { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */ |
| 1673 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1674 | }, |
| 1675 | { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */ |
| 1676 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ |
| 1677 | }, |
Krzysztof Hałasa | 6abff5d | 2011-12-12 14:51:00 +0100 | [diff] [blame] | 1678 | |
Adam Richter | c332b4e | 2009-02-18 16:17:15 -0800 | [diff] [blame] | 1679 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
| 1680 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on |
| 1681 | data interface instead of |
| 1682 | communications interface. |
| 1683 | Maybe we should define a new |
| 1684 | quirk for this. */ |
| 1685 | }, |
Jean-Christian de Rivaz | e7d491a | 2012-10-10 12:49:02 +0000 | [diff] [blame] | 1686 | { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */ |
| 1687 | .driver_info = NO_UNION_NORMAL, |
| 1688 | }, |
Denis N Ladin | 036915a | 2012-12-26 18:29:44 +0500 | [diff] [blame] | 1689 | { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */ |
| 1690 | .driver_info = NO_UNION_NORMAL, |
| 1691 | }, |
Kir Kolyshkin | 1f17c50 | 2009-05-28 20:33:58 +0400 | [diff] [blame] | 1692 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
| 1693 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ |
| 1694 | }, |
Russ Nelson | c3baa19 | 2010-04-21 23:07:03 -0400 | [diff] [blame] | 1695 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
| 1696 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ |
| 1697 | }, |
Oliver Neukum | 9be8456 | 2007-02-12 08:50:03 +0100 | [diff] [blame] | 1698 | |
Adrian Taylor | c1479a9 | 2009-11-19 10:35:33 +0000 | [diff] [blame] | 1699 | /* Nokia S60 phones expose two ACM channels. The first is |
| 1700 | * a modem and is picked up by the standard AT-command |
| 1701 | * information below. The second is 'vendor-specific' but |
| 1702 | * is treated as a serial device at the S60 end, so we want |
| 1703 | * to expose it on Linux too. */ |
| 1704 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ |
| 1705 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ |
| 1706 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ |
| 1707 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ |
| 1708 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ |
| 1709 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ |
| 1710 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ |
| 1711 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ |
| 1712 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ |
| 1713 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ |
| 1714 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ |
| 1715 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ |
| 1716 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ |
| 1717 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ |
| 1718 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ |
| 1719 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ |
| 1720 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ |
| 1721 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ |
| 1722 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ |
| 1723 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ |
| 1724 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ |
| 1725 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ |
| 1726 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ |
| 1727 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ |
| 1728 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ |
| 1729 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ |
| 1730 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ |
| 1731 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ |
| 1732 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ |
| 1733 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ |
| 1734 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ |
| 1735 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ |
| 1736 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ |
| 1737 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ |
| 1738 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ |
| 1739 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ |
| 1740 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ |
| 1741 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ |
| 1742 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ |
| 1743 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ |
| 1744 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ |
| 1745 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ |
| 1746 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ |
Przemo Firszt | 83a4eae9 | 2010-06-28 21:29:34 +0100 | [diff] [blame] | 1747 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
Toby Gray | 4035e45 | 2010-09-01 16:01:19 +0100 | [diff] [blame] | 1748 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
| 1749 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ |
| 1750 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ |
| 1751 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ |
| 1752 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ |
| 1753 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ |
| 1754 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ |
| 1755 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ |
| 1756 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ |
| 1757 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ |
Arvid Ephraim Picciani | 721d92f | 2011-01-25 15:58:40 +0100 | [diff] [blame] | 1758 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
Toby Gray | 4061fde | 2011-06-06 14:52:48 +0100 | [diff] [blame] | 1759 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
| 1760 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ |
Toby Gray | 4035e45 | 2010-09-01 16:01:19 +0100 | [diff] [blame] | 1761 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
Adrian Taylor | c1479a9 | 2009-11-19 10:35:33 +0000 | [diff] [blame] | 1762 | |
Denis Pershin | 65e52f4 | 2011-09-04 17:37:21 +0700 | [diff] [blame] | 1763 | /* Support for Owen devices */ |
| 1764 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ |
| 1765 | |
Adrian Taylor | c1479a9 | 2009-11-19 10:35:33 +0000 | [diff] [blame] | 1766 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
| 1767 | |
Julian Calaby | 7c5d8c3 | 2010-01-05 23:57:46 +1100 | [diff] [blame] | 1768 | /* Support Lego NXT using pbLua firmware */ |
Julian Calaby | ce12664 | 2010-01-05 23:58:20 +1100 | [diff] [blame] | 1769 | { USB_DEVICE(0x0694, 0xff00), |
| 1770 | .driver_info = NOT_A_MODEM, |
Otavio Salvador | 7893afc | 2010-09-26 23:35:05 -0300 | [diff] [blame] | 1771 | }, |
Julian Calaby | 7c5d8c3 | 2010-01-05 23:57:46 +1100 | [diff] [blame] | 1772 | |
Erik Slagter | fd5054c | 2011-05-11 12:06:55 +0200 | [diff] [blame] | 1773 | /* Support for Droids MuIn LCD */ |
| 1774 | { USB_DEVICE(0x04d8, 0x000b), |
| 1775 | .driver_info = NO_DATA_INTERFACE, |
| 1776 | }, |
| 1777 | |
Dmitry Torokhov | 1614265 | 2013-02-02 11:02:14 -0800 | [diff] [blame] | 1778 | #if IS_ENABLED(CONFIG_INPUT_IMS_PCU) |
| 1779 | { USB_DEVICE(0x04d8, 0x0082), /* Application mode */ |
| 1780 | .driver_info = IGNORE_DEVICE, |
| 1781 | }, |
| 1782 | { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */ |
| 1783 | .driver_info = IGNORE_DEVICE, |
| 1784 | }, |
| 1785 | #endif |
| 1786 | |
Philippe Corbes | 5b239f0 | 2010-08-31 19:31:32 +0200 | [diff] [blame] | 1787 | /* control interfaces without any protocol set */ |
| 1788 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
| 1789 | USB_CDC_PROTO_NONE) }, |
| 1790 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | /* control interfaces with various AT-command sets */ |
| 1792 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
| 1793 | USB_CDC_ACM_PROTO_AT_V25TER) }, |
| 1794 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
| 1795 | USB_CDC_ACM_PROTO_AT_PCCA101) }, |
| 1796 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
| 1797 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, |
| 1798 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
| 1799 | USB_CDC_ACM_PROTO_AT_GSM) }, |
| 1800 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1801 | USB_CDC_ACM_PROTO_AT_3G) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
| 1803 | USB_CDC_ACM_PROTO_AT_CDMA) }, |
| 1804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | { } |
| 1806 | }; |
| 1807 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1808 | MODULE_DEVICE_TABLE(usb, acm_ids); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | |
| 1810 | static struct usb_driver acm_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | .name = "cdc_acm", |
| 1812 | .probe = acm_probe, |
| 1813 | .disconnect = acm_disconnect, |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1814 | #ifdef CONFIG_PM |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1815 | .suspend = acm_suspend, |
| 1816 | .resume = acm_resume, |
Francesco Lavra | a91b0c5 | 2009-12-08 09:54:11 +0100 | [diff] [blame] | 1817 | .reset_resume = acm_reset_resume, |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1818 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | .id_table = acm_ids, |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1820 | #ifdef CONFIG_PM |
Oliver Neukum | 1365baf | 2007-10-12 17:24:28 +0200 | [diff] [blame] | 1821 | .supports_autosuspend = 1, |
Oliver Neukum | 3575858 | 2008-07-01 19:10:08 +0200 | [diff] [blame] | 1822 | #endif |
Sarah Sharp | e1f12eb | 2012-04-23 10:08:51 -0700 | [diff] [blame] | 1823 | .disable_hub_initiated_lpm = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | }; |
| 1825 | |
| 1826 | /* |
| 1827 | * TTY driver structures. |
| 1828 | */ |
| 1829 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 1830 | static const struct tty_operations acm_ops = { |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1831 | .install = acm_tty_install, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | .open = acm_tty_open, |
| 1833 | .close = acm_tty_close, |
Havard Skinnemoen | 7fb57a0 | 2011-11-30 13:28:14 -0800 | [diff] [blame] | 1834 | .cleanup = acm_tty_cleanup, |
Alan Cox | 10077d4 | 2009-06-11 12:36:09 +0100 | [diff] [blame] | 1835 | .hangup = acm_tty_hangup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | .write = acm_tty_write, |
| 1837 | .write_room = acm_tty_write_room, |
| 1838 | .ioctl = acm_tty_ioctl, |
| 1839 | .throttle = acm_tty_throttle, |
| 1840 | .unthrottle = acm_tty_unthrottle, |
| 1841 | .chars_in_buffer = acm_tty_chars_in_buffer, |
| 1842 | .break_ctl = acm_tty_break_ctl, |
| 1843 | .set_termios = acm_tty_set_termios, |
| 1844 | .tiocmget = acm_tty_tiocmget, |
| 1845 | .tiocmset = acm_tty_tiocmset, |
| 1846 | }; |
| 1847 | |
| 1848 | /* |
| 1849 | * Init / exit. |
| 1850 | */ |
| 1851 | |
| 1852 | static int __init acm_init(void) |
| 1853 | { |
| 1854 | int retval; |
| 1855 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); |
| 1856 | if (!acm_tty_driver) |
| 1857 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | acm_tty_driver->driver_name = "acm", |
| 1859 | acm_tty_driver->name = "ttyACM", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | acm_tty_driver->major = ACM_TTY_MAJOR, |
| 1861 | acm_tty_driver->minor_start = 0, |
| 1862 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, |
| 1863 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, |
Greg Kroah-Hartman | 331b831 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 1864 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | acm_tty_driver->init_termios = tty_std_termios; |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1866 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
| 1867 | HUPCL | CLOCAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | tty_set_operations(acm_tty_driver, &acm_ops); |
| 1869 | |
| 1870 | retval = tty_register_driver(acm_tty_driver); |
| 1871 | if (retval) { |
| 1872 | put_tty_driver(acm_tty_driver); |
| 1873 | return retval; |
| 1874 | } |
| 1875 | |
| 1876 | retval = usb_register(&acm_driver); |
| 1877 | if (retval) { |
| 1878 | tty_unregister_driver(acm_tty_driver); |
| 1879 | put_tty_driver(acm_tty_driver); |
| 1880 | return retval; |
| 1881 | } |
| 1882 | |
Johan Hovold | a2c7b93 | 2011-03-22 11:12:18 +0100 | [diff] [blame] | 1883 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | |
| 1885 | return 0; |
| 1886 | } |
| 1887 | |
| 1888 | static void __exit acm_exit(void) |
| 1889 | { |
| 1890 | usb_deregister(&acm_driver); |
| 1891 | tty_unregister_driver(acm_tty_driver); |
| 1892 | put_tty_driver(acm_tty_driver); |
| 1893 | } |
| 1894 | |
| 1895 | module_init(acm_init); |
| 1896 | module_exit(acm_exit); |
| 1897 | |
Alan Cox | 6e47e06 | 2009-06-11 12:37:06 +0100 | [diff] [blame] | 1898 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1899 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | MODULE_LICENSE("GPL"); |
Scott James Remnant | e766aeb | 2009-04-06 17:33:18 +0100 | [diff] [blame] | 1901 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |