View source for Conexant HSF modem drivers

The following modems, available in some ThinkPad models, use the Conexant HSF softmodem chip, and require an appropriate driver:

* [[ThinkPad 56K Modem (MDC-1.5)]]
* [[IBM Integrated 56K Modem (MDC-2)]]
* [[IBM Integrated Bluetooth III with 56K Modem (BMDC-2)]]
* [[IBM Integrated Bluetooth IV with 56K Modem (BMDC-3)]]

Two drivers are currently available.

===The Smartlink smlink driver===
The Linux driver for Agere modems from [http://www.smlink.com/ SmartLink] supports both 2.4 and 2.6 kernels. However, it does not work with the newer Intel ICH6 controllers (used, e.g., on the ThinkPad {{R52}} and {{T43}}; trouble on the {{G41}} has also been [[Installing Debian on a ThinkPad G41|reported]]). Some users report that AT commands work but dialing does not.

The {{path|snd_intel8x0m}} kernel module also (incorrectly?) recognizes the [[IBM Integrated Bluetooth III with 56K Modem (BMDC-2)|BMDC-2]]. At least scanModem works with it. About {{path|snd_intel8x0m}} see [[Modem_Daughter_Card_(MDC)|MDC]].

===The Linuxant hsf driver===
The commercial [http://www.linuxant.com/drivers/hsf/index.php Conexant HSF] driver from [http://www.linuxant.com Linuxant] supports these modem and work also on ICH6 models (e.g., ThinkPad {{R52}}, {{R51}}, {{T43}}, and {{Z60m}}).

It offers free limited evaluation at 14.4kbps, and the full version costs $19.99.

Download: http://www.linuxant.com/drivers/hsf/full/downloads.php
* For Ubuntu, Dell released an OEM version of the linux driver. You can download it [http://support.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R155004&SystemID=INSPIRONI6400/E1505&servicetag=&os=UBLN&osl=en&deviceid=8593&devlib=0&typecnt=0&vercnt=1&catid=-1&impid=-1&formatcnt=1&libid=20&fileid=206745 here].

This driver works well with reliable connections. It does not support voice or telephony features.

====Installation====
* Fedora Core: use the provided RPMs. If using a custom kernel, choose the "Generic packages with source" in the [https://www.linuxant.com/drivers/hsf/full/downloads.php#generic HSF downloads page].
* Debian: run {{cmdroot|dpkg -i hsfblablabla.deb}}. When asked you for the code, enter "FREE" for the 14.4kbps evaluation.
* Gentoo: the hsfmodem package is in portage.

If you are running a 2.6.15.* kernel, you might consider running:
 # hsfconfig --patch 
first, and apply the appropriate patch (there is an issue with hsfmodem and 2.6.15 tree that results in kernel oops. 
The patch provided by Conexant fixes that). It looks like this command has to be run in console (rather than e.g. xterm, 
as the menu issues some escape sequences that garble the output in xterm)

====Suspend/resume====
The hsfmodem driver may prevent your machine from going into suspend. If so, you may remove them prior to sleep by adding to your suspend script:
 modprobe -r hsfmc97ich hsfserial hsfengine hsfosspec hsfsoar
The drivers should be automatically re-loaded upon resume by the hotplug system, if not, just manually restart hotplug or modprobe the individual drivers, adding this to your suspend script if needed.

If you use the <tt>hibernate</tt> script on Fedora Core, simple add this to {{path|/etc/hibernate/hibernate.conf}}:
 OnSuspend 12 service hsf stop
 OnResume  12 service hsf start

====Problem with Software Suspend 2====
Version 7.47.00.01 works fine with [[Software Suspend 2]].

The version 7.43.00.01 of the HSF driver conflicted with [[Software Suspend 2]]. The needed patch isn't available from Linuxant anymore.

For {{Fedora}} systems, the procedure for generating and installing a patched RPM is as follows:
*Download tarball and patches:
:{{cmdroot|wget http://www.linuxant.com/dri[[Software Suspend 2]]vers/hsf/full/archive/hsfmodem-7.43.00.01full/hsfmodem-7.43.00.01full.tar.gz}}
:{{cmdroot|wget http://www.linuxant.com/drivers/hsf/full/archive/patches/hsf-7.43.00.01-suspend2.patch}}
:{{cmdroot|wget http://www.linuxant.com/drivers/hsf/full/archive/patches/hsf-7.43.00.01-try_to_freeze-2.patch}}
*Build the RPM:
:{{cmdroot|mkdir hsf-workdir}}
:{{cmdroot|cd hsf-workdir}}
:{{cmdroot|tar xzvf ../hsfmodem-7.43.00.01full.tar.gz}}
:{{cmdroot|cd hsfmodem-7.43.00.01full}}
:{{cmdroot|patch -i ../../hsf-7.43.00.01-suspend2.patch -p1}}
:{{cmdroot|patch -i ../../hsf-7.43.00.01-try_to_freeze-2.patch -p1}}
:{{cmdroot|cd ..}}
:{{cmdroot|tar czvf hsfmodem-7.43.00.01full.tar.gz hsfmodem-7.43.00.01full}}
:{{cmdroot|rpmbuild -ta hsfmodem-7.43.00.01full.tar.gz}}
*Install the RPM:
:{{cmdroot|rpm -e hsfmodem}}
:{{cmdroot|rpm -Uvh /usr/src/redhat/RPMS/i386/hsfmodem-7.43.00.01full-1.i386.rpm}}