From patchwork Mon Jul 13 10:55:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 11659343 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 067B560D for ; Mon, 13 Jul 2020 10:55:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7F3B2077D for ; Mon, 13 Jul 2020 10:55:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594637729; bh=rBEilj4aZShq8cN1g/iU8r4atOvqHY3Oi4xmcIPmoY4=; h=From:To:Cc:Subject:Date:List-ID:From; b=R9y5FL39N7QkI5OG76jWjqvX+sB2wUatPpU58P61pmd84Wr1VMsEY9HRtb8szQpCT MmL8eUWg5Vdx/NLqL53ghjMH4rbWhnc5MrYafmKJyZ6kqwtWBaK5GG1GiuAyW6BeAk 2wkz5k14F1+VGKGhZZCRic7QNGVN70Zw/E47dwgU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729583AbgGMKz3 (ORCPT ); Mon, 13 Jul 2020 06:55:29 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:42592 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729059AbgGMKz3 (ORCPT ); Mon, 13 Jul 2020 06:55:29 -0400 Received: by mail-lj1-f195.google.com with SMTP id h22so17026933lji.9 for ; Mon, 13 Jul 2020 03:55:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=vvkKz4vLERv1GuIhHLvSQD7Xzg2tZ6UgOD/EWCw0zgI=; b=HGf6BgpmNXdQaGM0P1XbLGwG034FfepE5O+H6IQ+vPIfPrm675U566QIXbwt+hwmae jayp1xyLSDUH2+HVdZ9FG7t2jY1hj8izwcfzAQC049SlWxd7y8oxjklEc70Vz+cg3s/R qz9DVaa4PFixM9p5JvS7Mh7tq2UtCoGUsSOipk0+ZT9zpvcIdqdOCEDmvyt+GlhL25/Q 8ft64j/kiLqe1l7LrPCnAS8OScma6c75Id10fPpQ3S/JtFzIezc9ewxluQS1OXE8kyww wLJq5Krce3SD3K32UwNJ8XEWxVwctqgJDbfD9gp497E+rlYInwwor7+gfEvQnrHNYws0 sgow== X-Gm-Message-State: AOAM530r57EmkaTtwLayN2I0S1Fkd+l8O0XwXiM8xSv4kB/t/ZyUoEvc CSgAaKR9qCmhA652G8280mSLhz4BweY= X-Google-Smtp-Source: ABdhPJwdQCLLQNkHBGZAmpDJFh4Z6w+Fn8+uzLXV1VrV/E8sbSkay9O+uRE9Zc6hCHKAhhncs0Zm6A== X-Received: by 2002:a2e:b4ec:: with SMTP id s12mr50193777ljm.155.1594637726320; Mon, 13 Jul 2020 03:55:26 -0700 (PDT) Received: from xi.terra (c-beaee455.07-184-6d6c6d4.bbcust.telenor.se. [85.228.174.190]) by smtp.gmail.com with ESMTPSA id j25sm4551812lfh.95.2020.07.13.03.55.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jul 2020 03:55:25 -0700 (PDT) Received: from johan by xi.terra with local (Exim 4.93.0.4) (envelope-from ) id 1juw7R-0007FA-Um; Mon, 13 Jul 2020 12:55:34 +0200 From: Johan Hovold To: linux-usb@vger.kernel.org Cc: =?utf-8?b?SmFyb23DrXIgxaBrb3JwaWw=?= , Johan Hovold Subject: [PATCH 0/5] USB: serial: cp210x: add support for line-status events Date: Mon, 13 Jul 2020 12:55:12 +0200 Message-Id: <20200713105517.27796-1-johan@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This series add supports for line-status events that specifically can be used to detect parity errors. The implementation relies on the device's event-insertion mode, which can also be used to detect line-breaks and modem status changes. But as this doesn't seem to work as expected on CP2102, support has been left unimplemented for now. Included are also a couple of cleanups. Johan Changes since RFC [1]: - drop sysrq support which relies on break detection - use 0xec (instead of 0xff) as escape character [1] https://lore.kernel.org/r/20200703150104.GE3453@localhost Johan Hovold (5): USB: serial: cp210x: disable interface on errors in open USB: serial: cp210x: add support for line-status events USB: serial: cp210x: add support for TIOCGICOUNT USB: serial: cp210x: drop unnecessary packed attributes USB: serial: cp210x: use in-kernel types in port data drivers/usb/serial/cp210x.c | 209 ++++++++++++++++++++++++++++++++++-- 1 file changed, 201 insertions(+), 8 deletions(-) Reviewed-by: Greg Kroah-Hartman