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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23348C48BD5 for ; Tue, 25 Jun 2019 10:14:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDB2620644 for ; Tue, 25 Jun 2019 10:14:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731173AbfFYKOd (ORCPT ); Tue, 25 Jun 2019 06:14:33 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:56232 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727738AbfFYKOc (ORCPT ); Tue, 25 Jun 2019 06:14:32 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: andrzej.p) with ESMTPSA id 5E67D266AD9 From: Andrzej Pietrasiewicz Subject: Re: [PATCH 0/2] Associate ddc adapters with connectors To: Russell King - ARM Linux admin Cc: linux-samsung-soc@vger.kernel.org, Joonyoung Shim , Maxime Ripard , Seung-Woo Kim , Maarten Lankhorst , linux-kernel@vger.kernel.org, Krzysztof Kozlowski , Inki Dae , David Airlie , Kyungmin Park , Kukjin Kim , dri-devel@lists.freedesktop.org, Daniel Vetter , kernel@collabora.com, Sean Paul , linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com References: <20190625100351.52ddptvb2gizaepi@shell.armlinux.org.uk> Message-ID: <817ccfba-754c-6a28-8d75-63f70605fd43@collabora.com> Date: Tue, 25 Jun 2019 12:14:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1 MIME-Version: 1.0 In-Reply-To: <20190625100351.52ddptvb2gizaepi@shell.armlinux.org.uk> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Russell, W dniu 25.06.2019 o 12:03, Russell King - ARM Linux admin pisze: > On Tue, Jun 25, 2019 at 11:46:34AM +0200, Andrzej Pietrasiewicz wrote: >> It is difficult for a user to know which of the i2c adapters is for which >> drm connector. This series addresses this problem. >> >> The idea is to have a symbolic link in connector's sysfs directory, e.g.: >> >> ls -l /sys/class/drm/card0-HDMI-A-1/i2c-2 >> lrwxrwxrwx 1 root root 0 Jun 24 10:42 /sys/class/drm/card0-HDMI-A-1/i2c-2 \ >> -> ../../../../soc/13880000.i2c/i2c-2 > > Don't you want the symlink name to be "i2c" or something fixed, rather > than the name of the i2c adapter? Otherwise, you seem to be encumbering > userspace with searching the directory to try and find the symlink. > Thank you for your comment. So you imagine something on the lines of: lrwxrwxrwx 1 root root 0 Jun 24 10:42 /sys/class/drm/card0-HDMI-A-1/ddc \ -> ../../../../soc/13880000.i2c/i2c-2 ? This makes sense to me, I will send a v2. Andrzej