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=-3.8 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 EDE27CA9EAF for ; Sun, 27 Oct 2019 14:10:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8B4021726 for ; Sun, 27 Oct 2019 14:10:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ehmy/hYU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726682AbfJ0OKA (ORCPT ); Sun, 27 Oct 2019 10:10:00 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:45592 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726541AbfJ0OKA (ORCPT ); Sun, 27 Oct 2019 10:10:00 -0400 Received: by mail-pf1-f193.google.com with SMTP id c7so3654251pfo.12; Sun, 27 Oct 2019 07:09:59 -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=UI3dLKgfyOyp4aT+UI7pPbeRzP/GQ0hgQ8832KcNALM=; b=Ehmy/hYU5WzuSjc+t1kw1dtyw4PUrpdvooaurTp6jgilTlHyeul5FS0UVzVdjFIFg2 D+9uL5oSeHGWmlkUWmnFF19sqM4HgjlJXugueI42xUEYQOFhQvCOtl8/abT0RIQcRujJ 8tbumrE1x7ymHMDJahI0bXwyY2OlHOE9bHdaEJ+wtB2R+zsAcOrAN7QhSVq38coMpGa8 EazRjO2nCStyuG8vmiTqp/bAwRPj/Lp5/3hqxcE3N9DT7WY8aFwpBycw9vYB28xJkVpe DNKgtGTN9PKCPQh8FPgfwmkphOqJ+vDKAoeDHrjllW3rDRwH7ZIYggnLmTjfLG52YWEA wQTg== 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=UI3dLKgfyOyp4aT+UI7pPbeRzP/GQ0hgQ8832KcNALM=; b=P9WVQO44wE6SzZDNwn9BFPN1AmrDF6L2xs7iMhq5Q/YCa4/qIqMHXHDyho5Q4sJy1b yjz5MKdu4fypkrWYHvQwGIWthivqe75r2qXhm3W7vXVzkQjkaQpNKbW6HzMbTfJHItbE x57uB8YP0WcimgG3ibzN5/T4sgzKsiWdnNmsaR+X5Ww0UFhiG9UtUbM25h8gtLcU/bo1 zDVFwBTu6vl61oWsnFtCERmcy0PaUsOokbTHpAfGjmm43efbmZrIVQ5Lin+U8epJdzLN lKxrIFBR1KtltBV1ria6GU99Gjo3SfXWiD+Bp28fjwH1Rq9ctZCN538BSPdJEPPoIOJN FKnQ== X-Gm-Message-State: APjAAAVTfLBpTvEyHusO4yuaU4kv3REel0R0TZvn4gFZ7ZbJUadOP6WS F8o0gM7VWJPKEqYrYxRidMl6RVe/ X-Google-Smtp-Source: APXvYqxuR898N1LLVOeC07L07I/XYcmlO7SBcWehYcxr5g6oBY5YKNpGDXOJZS/OZcXrhTPR6/v4kw== X-Received: by 2002:a17:90a:e38c:: with SMTP id b12mr16515902pjz.136.1572185399240; Sun, 27 Oct 2019 07:09:59 -0700 (PDT) Received: from localhost.localdomain ([240f:34:212d:1:368e:e048:68f1:84e7]) by smtp.gmail.com with ESMTPSA id v10sm6514702pfg.11.2019.10.27.07.09.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 27 Oct 2019 07:09:58 -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 v2 0/2] leds: introduce generic LED level meter driver Date: Sun, 27 Oct 2019 23:09:37 +0900 Message-Id: <1572185379-21537-1-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/ * v2 - Use proper subject line for dt-binding patch. - Swap the patch order. - Various fixes noticed by Rob and Dan. - Update example usage for brightness-weights property - Use unified device proerty interface as much as possible. - Support linux,default-trigger and default-state properties. Akinobu Mita (2): dt-bindings: leds: Add leds-meter binding leds: Add generic LED level meter driver .../devicetree/bindings/leds/leds-meter.yaml | 67 +++++++++ drivers/leds/Kconfig | 10 ++ drivers/leds/Makefile | 1 + drivers/leds/leds-meter.c | 151 +++++++++++++++++++++ 4 files changed, 229 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