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=-3.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 22337CA9EA0 for ; Tue, 22 Oct 2019 15:07:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7874214B2 for ; Tue, 22 Oct 2019 15:07:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="c+ITJNWh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732198AbfJVPHO (ORCPT ); Tue, 22 Oct 2019 11:07:14 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:36006 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbfJVPHO (ORCPT ); Tue, 22 Oct 2019 11:07:14 -0400 Received: by mail-pf1-f195.google.com with SMTP id y22so10841507pfr.3; Tue, 22 Oct 2019 08:07:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=yaqub0K0G3uTD59DLVZoQmqolnqDtWK9ZqA8b+mHC+w=; b=c+ITJNWhQ2O5t/Ox7u4TnYnrZ+pZ4y3ctXzGCA2GpdhMAcO4gI0Js++HrdANN0i2eI fDC+hH7wjZDOg0FHlaZvD+6SQCBDPF3z9z3nJk7XboDA42J5cNVSJtcH3TCtKErpD2iO 6VLJjWnXoKGEGj6EuqQ8hGQnmrV6SbzS0AgaE5xCGNfle7cwRL+KpQYATvlVg6p/JcJk k5umhMzHByI2dvWbMWbYG32+DS7AONj8Is1CcpPPaRt63Ey/YSX5SUyDF0ZDTp5yoDKE XL0ppXailKtSjptMQhN608Z80RLfnBwGCEk9+XgjyjQTYT9grTFzxTeDuige7YsPY/BW 8HTw== 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; bh=yaqub0K0G3uTD59DLVZoQmqolnqDtWK9ZqA8b+mHC+w=; b=DG8HgUJxKnXv22QGZp91+/3ikPSa4XH0TVO7M6a5B9jHBF0HkIjB9lfn/0fjE6sS6I GimOn2f6x5kCv9Hw5fsL8CTikWpYSFsjBnAQLPUuFlZ6nCaVmGvjgvUiZlQinpwHd+sY FfUSADW4CSUEfuG7/Rhq0ctyhi+Z4ml7ctjZEcsVwiLy83MPUpreTA8yxuZjtoxTMFq4 wAk3gAcm1K9LQx9apSTzYj8iLV2Wy+QU9C/c8kWZ7UzPeLDT7TDa6rE+Xz0pzxzLEpUc tcF7bWuRo9qFgKreKdJyLK6SLdd2wrfAQfkzHd4/oDQQANkuwH++zU2bM0PoJNCwsE5q emXQ== X-Gm-Message-State: APjAAAXA2DBkhW1XOBcdYaQGC8YDuDKzxV40K2eZiFuKJ2PtaAoEUhV1 gsqgXVEjxJGCvlqmgA8BhsHSa8Dy X-Google-Smtp-Source: APXvYqwhOCMvdYqLQntX3uWaPVw/Sf0TTPazdXG62Px/cDsZee1GEKAbUnn4SyxTwHGnGhd7yguFlg== X-Received: by 2002:a17:90a:9406:: with SMTP id r6mr5568310pjo.0.1571756833308; Tue, 22 Oct 2019 08:07:13 -0700 (PDT) Received: from localhost.localdomain ([240f:34:212d:1:368e:e048:68f1:84e7]) by smtp.gmail.com with ESMTPSA id k66sm19882001pjb.11.2019.10.22.08.07.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 22 Oct 2019 08:07:12 -0700 (PDT) From: Akinobu Mita To: linux-leds@vger.kernel.org, devicetree@vger.kernel.org Cc: Akinobu Mita , Rob Herring , Mark Rutland , Bjorn Andersson , Tomi Valkeinen , Jean-Jacques Hiblot , Jacek Anaszewski , Pavel Machek , Dan Murphy Subject: [PATCH 0/2] leds: add generic LED level meter driver Date: Wed, 23 Oct 2019 00:06:50 +0900 Message-Id: <1571756812-19005-1-git-send-email-akinobu.mita@gmail.com> X-Mailer: git-send-email 2.7.4 Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org This introduces a new LED driver that enables us to create a virtual LED level meter device that consists of multiple LED devices by different drivers. Previously I developed the level meter feature for leds-gpio ("leds: gpio: support multi-level brightness") [1]. Then I got a feedback from Bjorn Andersson and made more generic new driver. This driver is also inspired by led-backlight driver patchset [2] and actually requires devm_of_led_get() function provided by the patchset. [1] https://lore.kernel.org/linux-leds/1570203299-4270-1-git-send-email-akinobu.mita@gmail.com/ [2] https://lore.kernel.org/linux-leds/20191009085127.22843-1-jjhiblot@ti.com/ Akinobu Mita (2): leds: add LED level meter driver leds: meter: add leds-meter binding .../devicetree/bindings/leds/leds-meter.yaml | 42 +++++++ drivers/leds/Kconfig | 10 ++ drivers/leds/Makefile | 1 + drivers/leds/leds-meter.c | 134 +++++++++++++++++++++ 4 files changed, 187 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-meter.yaml create mode 100644 drivers/leds/leds-meter.c Cc: Rob Herring Cc: Mark Rutland Cc: Bjorn Andersson Cc: Tomi Valkeinen Cc: Jean-Jacques Hiblot Cc: Jacek Anaszewski Cc: Pavel Machek Cc: Dan Murphy -- 2.7.4