diff options
author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-18 23:05:38 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-20 14:28:36 +0200 |
commit | ecefae6db042283bf88ef3777f2381b18df8ed46 (patch) | |
tree | 5177129d720add73008eeadd6581fab7c27f5233 /Documentation/usb/acm.txt | |
parent | usb: renesas_usbhs: Use struct assignment instead of memcpy() (diff) | |
download | linux-ecefae6db042283bf88ef3777f2381b18df8ed46.tar.xz linux-ecefae6db042283bf88ef3777f2381b18df8ed46.zip |
docs: usb: rename files to .rst and add them to drivers-api
While there are a mix of things here, most of the stuff
were written from Kernel developer's PoV. So, add them to
the driver-api book.
A follow up for this patch would be to move documents from
there that are specific to sysadmins, adding them to the
admin-guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/usb/acm.txt')
-rw-r--r-- | Documentation/usb/acm.txt | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/Documentation/usb/acm.txt b/Documentation/usb/acm.txt deleted file mode 100644 index e8bda98e9b51..000000000000 --- a/Documentation/usb/acm.txt +++ /dev/null @@ -1,132 +0,0 @@ -====================== -Linux ACM driver v0.16 -====================== - -Copyright (c) 1999 Vojtech Pavlik <vojtech@suse.cz> - -Sponsored by SuSE - -0. Disclaimer -~~~~~~~~~~~~~ -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2 of the License, or (at your option) -any later version. - -This program is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along -with this program; if not, write to the Free Software Foundation, Inc., 59 -Temple Place, Suite 330, Boston, MA 02111-1307 USA - -Should you need to contact me, the author, you can do so either by e-mail - -mail your message to <vojtech@suse.cz>, or by paper mail: Vojtech Pavlik, -Ucitelska 1576, Prague 8, 182 00 Czech Republic - -For your convenience, the GNU General Public License version 2 is included -in the package: See the file COPYING. - -1. Usage -~~~~~~~~ -The drivers/usb/class/cdc-acm.c drivers works with USB modems and USB ISDN terminal -adapters that conform to the Universal Serial Bus Communication Device Class -Abstract Control Model (USB CDC ACM) specification. - -Many modems do, here is a list of those I know of: - - - 3Com OfficeConnect 56k - - 3Com Voice FaxModem Pro - - 3Com Sportster - - MultiTech MultiModem 56k - - Zoom 2986L FaxModem - - Compaq 56k FaxModem - - ELSA Microlink 56k - -I know of one ISDN TA that does work with the acm driver: - - - 3Com USR ISDN Pro TA - -Some cell phones also connect via USB. I know the following phones work: - - - SonyEricsson K800i - -Unfortunately many modems and most ISDN TAs use proprietary interfaces and -thus won't work with this drivers. Check for ACM compliance before buying. - -To use the modems you need these modules loaded:: - - usbcore.ko - uhci-hcd.ko ohci-hcd.ko or ehci-hcd.ko - cdc-acm.ko - -After that, the modem[s] should be accessible. You should be able to use -minicom, ppp and mgetty with them. - -2. Verifying that it works -~~~~~~~~~~~~~~~~~~~~~~~~~~ - -The first step would be to check /sys/kernel/debug/usb/devices, it should look -like this:: - - T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 - B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 - D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 - P: Vendor=0000 ProdID=0000 Rev= 0.00 - S: Product=USB UHCI Root Hub - S: SerialNumber=6800 - C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA - I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub - E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms - T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 - D: Ver= 1.00 Cls=02(comm.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 2 - P: Vendor=04c1 ProdID=008f Rev= 2.07 - S: Manufacturer=3Com Inc. - S: Product=3Com U.S. Robotics Pro ISDN TA - S: SerialNumber=UFT53A49BVT7 - C: #Ifs= 1 Cfg#= 1 Atr=60 MxPwr= 0mA - I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=acm - E: Ad=85(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms - E: Ad=04(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms - E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=128ms - C:* #Ifs= 2 Cfg#= 2 Atr=60 MxPwr= 0mA - I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=acm - E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=128ms - I: If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=acm - E: Ad=85(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms - E: Ad=04(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms - -The presence of these three lines (and the Cls= 'comm' and 'data' classes) -is important, it means it's an ACM device. The Driver=acm means the acm -driver is used for the device. If you see only Cls=ff(vend.) then you're out -of luck, you have a device with vendor specific-interface:: - - D: Ver= 1.00 Cls=02(comm.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 2 - I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=acm - I: If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=acm - -In the system log you should see:: - - usb.c: USB new device connect, assigned device number 2 - usb.c: kmalloc IF c7691fa0, numif 1 - usb.c: kmalloc IF c7b5f3e0, numif 2 - usb.c: skipped 4 class/vendor specific interface descriptors - usb.c: new device strings: Mfr=1, Product=2, SerialNumber=3 - usb.c: USB device number 2 default language ID 0x409 - Manufacturer: 3Com Inc. - Product: 3Com U.S. Robotics Pro ISDN TA - SerialNumber: UFT53A49BVT7 - acm.c: probing config 1 - acm.c: probing config 2 - ttyACM0: USB ACM device - acm.c: acm_control_msg: rq: 0x22 val: 0x0 len: 0x0 result: 0 - acm.c: acm_control_msg: rq: 0x20 val: 0x0 len: 0x7 result: 7 - usb.c: acm driver claimed interface c7b5f3e0 - usb.c: acm driver claimed interface c7b5f3f8 - usb.c: acm driver claimed interface c7691fa0 - -If all this seems to be OK, fire up minicom and set it to talk to the ttyACM -device and try typing 'at'. If it responds with 'OK', then everything is -working. |