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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 8F74DC43381 for ; Mon, 25 Mar 2019 12:36:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5FAE72085A for ; Mon, 25 Mar 2019 12:36:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="mEfCPlXc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731166AbfCYMgO (ORCPT ); Mon, 25 Mar 2019 08:36:14 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:54252 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730603AbfCYMgO (ORCPT ); Mon, 25 Mar 2019 08:36:14 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x2PCa7Za097548; Mon, 25 Mar 2019 07:36:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1553517367; bh=FkThucz8FE1H0tijG4AoCQcV2Zm9NiuCavTJpcZkSWw=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=mEfCPlXcUVyk1zhQ+V4Hkd6L8Z5h/ZkqccPLmeEVbajHgJdDvF+TjTRnSZZuQDVfv vgWIh3AzXD9UHC6znLb3atG+rwjcQfgfAiY00RWDYG+fmzm5J+xTTHFp6NiB81Ip7H EkaVnnmB7bhsvrsisXIZ2S45nIpSv1rxL65lUNqw= Received: from DLEE111.ent.ti.com (dlee111.ent.ti.com [157.170.170.22]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x2PCa7Ws004906 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 25 Mar 2019 07:36:07 -0500 Received: from DLEE111.ent.ti.com (157.170.170.22) by DLEE111.ent.ti.com (157.170.170.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 25 Mar 2019 07:36:06 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE111.ent.ti.com (157.170.170.22) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5 via Frontend Transport; Mon, 25 Mar 2019 07:36:06 -0500 Received: from [172.22.78.61] (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x2PCa6sE000567; Mon, 25 Mar 2019 07:36:06 -0500 Subject: Re: [PATCH 4/4] leds: lm3532: Introduce the lm3532 LED driver To: Tony Lindgren CC: , , , , , , , Sebastian Reichel References: <20190321142838.22985-1-dmurphy@ti.com> <20190321142838.22985-4-dmurphy@ti.com> <20190322221654.GG19425@atomide.com> From: Dan Murphy Message-ID: Date: Mon, 25 Mar 2019 07:35:38 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 MIME-Version: 1.0 In-Reply-To: <20190322221654.GG19425@atomide.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tony On 3/22/19 5:16 PM, Tony Lindgren wrote: > Hi, > > * Dan Murphy [190321 14:29]: >> Introduce the Texas Instruments LM3532 White LED driver. >> The driver supports ALS configurability or manual brightness >> control. >> >> The driver also supports associating LED strings with specific >> control banks in a group or as individually controlled strings. > > Thanks for getting this driver done. I need help a bit using > this though.. What's the glue to the drm driver? > > I can control the backlight brightness just fine via /sys, and > backlight shows up as the trigger in /sys/class/leds/lm3532:backlight, > but /sys/class/backlight is empty and looks like drm can't find it. > > Do I need to enable some additional driver(s) to get this to work > with the drm driver? > Can you dump or point to the defconfig? Dan > Regards, > > Tony > -- ------------------ Dan Murphy