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=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 2A784C49ED7 for ; Mon, 23 Sep 2019 10:21:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F1FE820882 for ; Mon, 23 Sep 2019 10:21:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="iUbhD99i" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2439442AbfIWKVJ (ORCPT ); Mon, 23 Sep 2019 06:21:09 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:56406 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439439AbfIWKVJ (ORCPT ); Mon, 23 Sep 2019 06:21:09 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x8NAL3f9016425; Mon, 23 Sep 2019 05:21:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1569234063; bh=3Qp41sFKIRa/fbfqRf8DnT0JKJAM2yq+SpoHtYKTFmI=; h=From:To:CC:Subject:Date; b=iUbhD99i0OQYiSOhWEY+/Hfuhde+ZtaN/uDW7RCYG6Q4Cs/lor5EB9HSGwjznmYwk jb8U2dOxnHokHYv3uQPWDk3clTqSCG/t6p8Puq2Rj5E2G6NnrmLKa1KQzKsYh9oXBf 7+D9FGbOy6TMHcJBuKaESAA4biK8R19qCNELFhXM= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x8NAL3kB005967 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 23 Sep 2019 05:21:03 -0500 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 23 Sep 2019 05:21:03 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Mon, 23 Sep 2019 05:20:57 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x8NAL222049544; Mon, 23 Sep 2019 05:21:03 -0500 From: Jean-Jacques Hiblot To: , , CC: , , , , Jean-Jacques Hiblot Subject: [PATCH v5 0/3] leds: Add control of the voltage/current regulator to the LED core Date: Mon, 23 Sep 2019 12:20:56 +0200 Message-ID: <20190923102059.17818-1-jjhiblot@ti.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org This series makes it possible for the LED core to manage the power supply of a LED. It uses the regulator API to disable/enable the power if when the LED is turned on/off. This is especially useful in situations where the LED driver/controller is not supplying the power. Because updating a regulator state can block, it is always defered to set_brightness_delayed(). changes in v5: - fixed build error in led_set_brightness_sync(). Explain the role of flush__work() changes in v4: - Add a new patch to make led_set_brightness_sync() use led_set_brightness_nosleep() and then wait the work to be done - Rework how the core knows how the regulator needs to be updated. changes in v3: - reword device-tree description - reword commit log - remove regulator updates from functions used in atomic context. If the regulator must be updated, it is defered to a workqueue. - Fix led_set_brightness_sync() to work with the non-blocking function __led_set_brightness() changes in v2: - use devm_regulator_get_optional() to avoid using the dummy regulator and do some unnecessary work Jean-Jacques Hiblot (3): led: make led_set_brightness_sync() use led_set_brightness_nosleep() dt-bindings: leds: document the "power-supply" property leds: Add control of the voltage/current regulator to the LED core .../devicetree/bindings/leds/common.txt | 6 ++ drivers/leds/led-class.c | 17 ++++ drivers/leds/led-core.c | 78 +++++++++++++++++-- drivers/leds/leds.h | 3 + include/linux/leds.h | 5 ++ 5 files changed, 101 insertions(+), 8 deletions(-) -- 2.17.1