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Sun, 8 Apr 2018 12:50:44 -0400 Received: from muru.com ([72.249.23.125]:35702 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752396AbeDHQun (ORCPT ); Sun, 8 Apr 2018 12:50:43 -0400 Date: Sun, 8 Apr 2018 09:50:38 -0700 From: Tony Lindgren To: Pavel Machek Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Alan Cox , Dan Williams , Jiri Prchal , Jiri Slaby , Marcel Partap , Merlijn Wajer , Michael Nazzareno Trimarchi , Michael Scott , Peter Hurley , Russ Gorby , Sascha Hauer , Sebastian Reichel Subject: Re: [PATCH 1/2] tty: n_gsm: Fix long delays with control frame timeouts in ADM mode Message-ID: <20180408165038.GM5700@atomide.com> References: <20180407171951.122759-1-tony@atomide.com> <20180408090259.GA8185@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180408090259.GA8185@amd> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-serial-owner@vger.kernel.org X-Mailing-List: linux-serial@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: * Pavel Machek [180408 09:04]: > I guess I'd like to test this on Droid4; there are fso-gsm0710muxd and > gsm0710muxd packages in Debian, but I assume those do multiplexing in > userspace and thus are not suitable? I don't think those are needed, we now have kernel n_gsm driver do most of the work for us :) Doing ldattach config is still needed, but eventually we should have a serdev driver do that too for us. So apps should only do the ldattach part if node yet already done, and just attempt to use /dev/gsmtty* ports directly. I did get serdev working with n_gsm several weeks ago with horrible hacks, it needs quite a bit more work though before it's ready.. Then we need to add proxying of some /dev/gsmtty* ports to W3GLTE to get that working (US only AFAIK for the band). It might make sense to add the proxy features to ModemManager eventually. > Do you have a tool to use and a script? Yes I used the shell script I posted earlier, but forgot it also needs the ldattach done. Anyways, last night and today I wrote a quick test utility called droid4-ngsm that initializes things and I can use to do some experiments to get the ts27010 channel proxying to W3GLTE also going: http://github.com/tmlind/droid4-ngsm/ Sorry could not resist adding a test call feature too :) Hmm it might be best to add the ts27010 support and proxying eventually to ModemManager? I think ofono and others could still use the /dev/gsmtty* ports for the modem as needed too? Regards, Tony