[{"id":1769689,"web_url":"http://patchwork.ozlabs.org/comment/1769689/","msgid":"","list_archive_url":null,"date":"2017-09-17T09:48:48","subject":"Re: [PATCHv5 4/5] cec-gpio: add HDMI CEC GPIO driver","submitter":{"id":7055,"url":"http://patchwork.ozlabs.org/api/people/7055/","name":"Linus Walleij","email":"linus.walleij@linaro.org"},"content":"On Sat, Sep 16, 2017 at 4:28 PM, Hans Verkuil wrote:\n\n> From: Hans Verkuil \n>\n> Add a simple HDMI CEC GPIO driver that sits on top of the cec-pin framework.\n>\n> While I have heard of SoCs that use the GPIO pin for CEC (apparently an\n> early RockChip SoC used that), the main use-case of this driver is to\n> function as a debugging tool.\n>\n> By connecting the CEC line to a GPIO pin on a Raspberry Pi 3 for example\n> it turns it into a CEC debugger and protocol analyzer.\n>\n> With 'cec-ctl --monitor-pin' the CEC traffic can be analyzed.\n>\n> But of course it can also be used with any hardware project where the\n> HDMI CEC line is hooked up to a pull-up gpio line.\n>\n> In addition this has (optional) support for tracing HPD changes if the\n> HPD is connected to a GPIO.\n>\n> Signed-off-by: Hans Verkuil \n\nReviewed-by: Linus Walleij \n\nYours,\nLinus Walleij\n--\nTo unsubscribe from this list: send the line \"unsubscribe devicetree\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at http://vger.kernel.org/majordomo-info.html","headers":{"Return-Path":"","X-Original-To":"incoming-dt@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming-dt@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=devicetree-owner@vger.kernel.org; receiver=)","ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"gXFLWsYI\"; dkim-atps=neutral"],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xw48g3hsZz9s7h\n\tfor ;\n\tSun, 17 Sep 2017 19:48:51 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751263AbdIQJsu (ORCPT\n\t);\n\tSun, 17 Sep 2017 05:48:50 -0400","from mail-io0-f177.google.com ([209.85.223.177]:51795 \"EHLO\n\tmail-io0-f177.google.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1750861AbdIQJst (ORCPT\n\t); Sun, 17 Sep 2017 05:48:49 -0400","by mail-io0-f177.google.com with SMTP id l15so13440944iol.8\n\tfor ;\n\tSun, 17 Sep 2017 02:48:49 -0700 (PDT)","by 10.79.164.78 with HTTP; Sun, 17 Sep 2017 02:48:48 -0700 (PDT)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google;\n\th=mime-version:in-reply-to:references:from:date:message-id:subject:to\n\t:cc; bh=sgWnQvQLPlB9XVIpBbYR5Kj8zW7Tfi1Jwn3N6fVn2Dk=;\n\tb=gXFLWsYIaw6ebx5V2i7hdcpd479rqjuqpCdF0GIs1W46kRciP8DjvuoU5pxa91AXmR\n\tksoBTRU1LMrrWWEDO1oxZXNIQ7fW3zXQOwxz5dzAWrRWDMwna4egnH+Q8tWyjJbl4QDg\n\tuQkBoxvEl0kHK/nn5CPylEjwk08MWs49VbNtw=","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:mime-version:in-reply-to:references:from:date\n\t:message-id:subject:to:cc;\n\tbh=sgWnQvQLPlB9XVIpBbYR5Kj8zW7Tfi1Jwn3N6fVn2Dk=;\n\tb=MZm7OxYVHr/+yAkD5U6gWyD3LjYjuaQ2yzwyUh2p+t53fUVMuAXxSLrSOKfQXUwIlL\n\tRHonyKSAx/9PfPpuiXAONQRgbO4ehNojNm60wm01QvS4kZHHragRzQ9iN09KTUmQ+XoC\n\tW1Z8YyzMXBTvwtUE7pDoo4/GOFn9547WLol+7RuLFX9h+conuNyk0of3Q3OCro/RTLat\n\tRzE92fGTm4C7vc1iVrpdVi/4gVaVI8yWU+06FKlGqkAy6lSrWckx4d06M/5n5G9ElA1+\n\t/lQW5VL8/u/t4Kik7G7nGyq9AHZf2/AWs3EY1Jbgya8OloZvVGU0LKsvbPApWJzLZOqN\n\t03Lw==","X-Gm-Message-State":"AHPjjUhT977UxgK+N643MWnP7FUCPNvS+PFb1ZPr0b+jXa4WpmRjJ1qo\n\t7+walq0cWLojaHH92mRt26PaRLnOHkGw+y/ckqMoXQ==","X-Google-Smtp-Source":"AOwi7QBtoa0q66gt1nI4fuD3vKPbo4FeAQ8QlOWlbCyBt7eoTb1XEBjLtaM/cAnJEojBovR5+lI+uMyQur0FKUPb5GQ=","X-Received":"by 10.107.156.21 with SMTP id f21mr16287573ioe.226.1505641729220;\n\tSun, 17 Sep 2017 02:48:49 -0700 (PDT)","MIME-Version":"1.0","In-Reply-To":"<20170916142827.5878-5-hverkuil@xs4all.nl>","References":"<20170916142827.5878-1-hverkuil@xs4all.nl>\n\t<20170916142827.5878-5-hverkuil@xs4all.nl>","From":"Linus Walleij ","Date":"Sun, 17 Sep 2017 11:48:48 +0200","Message-ID":"","Subject":"Re: [PATCHv5 4/5] cec-gpio: add HDMI CEC GPIO driver","To":"Hans Verkuil ","Cc":"\"linux-media@vger.kernel.org\" ,\n\t\"open list:DRM PANEL DRIVERS\" ,\n\t\"devicetree@vger.kernel.org\" ,\n\tRob Herring , Hans Verkuil ","Content-Type":"text/plain; charset=\"UTF-8\"","Sender":"devicetree-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"devicetree@vger.kernel.org"}}]