From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Jacques Hiblot Subject: Re: [PATCH 0/4] Add a generic driver for LED-based backlight Date: Fri, 5 Jul 2019 13:34:45 +0200 Message-ID: References: <20190701151423.30768-1-jjhiblot@ti.com> <20190705101434.fw5rpctnqt6dwg6e@devuan> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190705101434.fw5rpctnqt6dwg6e@devuan> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Pavel Machek Cc: mark.rutland@arm.com, daniel.thompson@linaro.org, jingoohan1@gmail.com, tomi.valkeinen@ti.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, robh+dt@kernel.org, jacek.anaszewski@gmail.com, lee.jones@linaro.org, linux-leds@vger.kernel.org, dmurphy@ti.com List-Id: linux-leds@vger.kernel.org Ck9uIDA1LzA3LzIwMTkgMTI6MTQsIFBhdmVsIE1hY2hlayB3cm90ZToKPiBPbiBNb24gMjAxOS0w Ny0wMSAxNzoxNDoxOSwgSmVhbi1KYWNxdWVzIEhpYmxvdCB3cm90ZToKPj4KPj4gVGhpcyBzZXJp ZXMgdGFrZXMgaXQgZnJvbSB0aGVyZSBhbmQgaW1wbGVtZW50cyB0aGUgYmluZGluZyB0aGF0IHdh cwo+PiBkaXNjdXNzZWQgaW4gaHR0cHM6Ly9wYXRjaHdvcmsua2VybmVsLm9yZy9wYXRjaC83Mjkz OTkxLy4gSW4gdGhpcyBuZXcKPj4gYmluZGluZyB0aGUgYmFja2xpZ2h0IGRldmljZSBpcyBhIGNo aWxkIG9mIHRoZSBMRUQgY29udHJvbGxlciBpbnN0ZWFkIG9mCj4+IGJlaW5nIGFub3RoZXIgcGxh dGZvcm0gZGV2aWNlIHRoYXQgdXNlcyBhIHBoYW5kbGUgdG8gcmVmZXJlbmNlIGEgTEVELgo+IE90 aGVyIG9wdGlvbiB3b3VsZCBiZSB0byBoYXZlIGJhY2tsaWdodCB0cmlnZ2VyLiBXaGF0IGFyZQo+ IGFkdmFudGFnZXMvZGlzYWR2YW50YWdlcyByZWxhdGl2ZSB0byB0aGF0PwoKSSBkb24ndCBrbm93 IGhvdyB0aGlzIHdvdWxkIGZpdCBpbiB0aGUgbW9kZWwgd2hlcmUgbXVsdGlwbGUgcGFuZWxzIGFy ZSAKdXNlZCwgZWFjaCB3aXRoIGl0cyBvd24gYmFja2xpZ2h0LgoKQWxzbyB0aGUgbm90aWZpY2F0 aW9uIGlzIG9ubHkgYWJvdXQgYmxhbmtpbmcuCgo+IAkJCQkJCQkJCVBhdmVsCj4KX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcg bGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRl c2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVs 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=-2.4 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_SANE_1 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 D4467C4649B for ; Fri, 5 Jul 2019 11:35:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F78321852 for ; Fri, 5 Jul 2019 11:35:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="zR9tdtpe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727991AbfGELfB (ORCPT ); Fri, 5 Jul 2019 07:35:01 -0400 Received: from lelv0142.ext.ti.com ([198.47.23.249]:35274 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726107AbfGELfB (ORCPT ); Fri, 5 Jul 2019 07:35:01 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id x65BYpDq096314; Fri, 5 Jul 2019 06:34:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1562326491; bh=blnoL/MWFQnzkGsn5dq36BMBYhm1XiyMPpTo0t1/e6I=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=zR9tdtpeup1SDfhhyN5dDMB3l6l9mjNL7EW1niy+QvfOSHjDcQZoBbenpuod3nXpQ QMhM+CZPY/OzVCgZ/HV7E6kCPvBT3534sIbqKZy58BuGiFjnQvUV9oQsTbZKG4PMVj 8Q2m67GBRcn5ljvu3knFGoQd8iwBa+tn9MFOSXYU= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x65BYo8j013814 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 5 Jul 2019 06:34:51 -0500 Received: from DFLE108.ent.ti.com (10.64.6.29) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Fri, 5 Jul 2019 06:34:50 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE108.ent.ti.com (10.64.6.29) 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; Fri, 5 Jul 2019 06:34:50 -0500 Received: from [10.250.97.31] (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x65BYmXQ070978; Fri, 5 Jul 2019 06:34:48 -0500 Subject: Re: [PATCH 0/4] Add a generic driver for LED-based backlight To: Pavel Machek CC: , , , , , , , , , , References: <20190701151423.30768-1-jjhiblot@ti.com> <20190705101434.fw5rpctnqt6dwg6e@devuan> From: Jean-Jacques Hiblot Message-ID: Date: Fri, 5 Jul 2019 13:34:45 +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: <20190705101434.fw5rpctnqt6dwg6e@devuan> Content-Type: text/plain; charset="UTF-8"; format="flowed" Content-Transfer-Encoding: 7bit Content-Language: en-US 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 Message-ID: <20190705113445.c6qKxLENhqchUkGVqsUFb5q0ySbJ76iKwGeqOuYpx7E@z> On 05/07/2019 12:14, Pavel Machek wrote: > On Mon 2019-07-01 17:14:19, Jean-Jacques Hiblot wrote: >> >> This series takes it from there and implements the binding that was >> discussed in https://patchwork.kernel.org/patch/7293991/. In this new >> binding the backlight device is a child of the LED controller instead of >> being another platform device that uses a phandle to reference a LED. > Other option would be to have backlight trigger. What are > advantages/disadvantages relative to that? I don't know how this would fit in the model where multiple panels are used, each with its own backlight. Also the notification is only about blanking. > Pavel >