From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B1680C433F5 for ; Tue, 16 Nov 2021 08:28:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8DE7161B49 for ; Tue, 16 Nov 2021 08:28:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231970AbhKPIb1 (ORCPT ); Tue, 16 Nov 2021 03:31:27 -0500 Received: from mail.kernel.org ([198.145.29.99]:40608 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232018AbhKPIbX (ORCPT ); Tue, 16 Nov 2021 03:31:23 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2411861B96; Tue, 16 Nov 2021 08:28:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637051306; bh=GsBEHnqMkjDCb+qHzdBsRXrv5he05mH+4kVgyqKMjk8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=T98FoSSh997hGZHvamWNnRPIFS2BkzQEG5SWPzWrBPd5/KUvsyiWQq+Q5KRrKsSEE 9nHxjgTstXFQjGpZLzZjYJEH0vOFN6Jjp5ycx1qSMktmwZ1AcTkSYiaFfHntRvSQki 6y+Ja9osT+s3s6tL70ucsuXx82XFIc1kw7wRjL34= Date: Tue, 16 Nov 2021 09:28:24 +0100 From: Greg KH To: Jochen Mades Cc: "sistik@3ksolutions.sk" , linux-serial@vger.kernel.org Subject: Re: Extending serial port linux driver to toggle RS485 direction pin (GPIO) Message-ID: References: <731e2516-9703-8c9a-7e56-e7e7b362de94@mades.net> <236176398.157022.1637045032216@webmail.strato.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <236176398.157022.1637045032216@webmail.strato.com> Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org A: http://en.wikipedia.org/wiki/Top_post Q: Were do I find info about this thing called top-posting? A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? A: No. Q: Should I include quotations after my reply? http://daringfireball.net/2007/07/on_top On Tue, Nov 16, 2021 at 07:43:52AM +0100, Jochen Mades wrote: > Hi Greg, Hi Ivan, > > as would like to extend the RS485 behavior on my raspberry PI I did some "deep-diving" into the amba-pl011 driver and soon recognized the missing hardware support to detect "FIFO empty". Googling around I found the following patch, describing exactly my problem: > https://lore.kernel.org/linux-arm-kernel/20200107072831.GB1014453@kroah.com/T/ > > As I'm not familiar with your processes, I kindly ask you where I can find the patched sources of this Soft-Rs485-Amba driver and if it is planned to be intergrated in a future kernel release? I do not remember if these patches have been resubmitted or not, check the current kernel tree for details. If not, then obviously they need to be fixed up based on the review comments made. thanks, greg k-h