From patchwork Tue Jan 3 05:50:54 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "\(Exiting\) Baolin Wang" X-Patchwork-Id: 89607 Delivered-To: patch@linaro.org Received: by 10.140.20.101 with SMTP id 92csp7864423qgi; Mon, 2 Jan 2017 21:51:44 -0800 (PST) X-Received: by 10.99.230.17 with SMTP id g17mr114633954pgh.82.1483422704383; Mon, 02 Jan 2017 21:51:44 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g19si67832299pgk.62.2017.01.02.21.51.44; Mon, 02 Jan 2017 21:51:44 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757006AbdACFvl (ORCPT + 25 others); Tue, 3 Jan 2017 00:51:41 -0500 Received: from mail-pg0-f41.google.com ([74.125.83.41]:34726 "EHLO mail-pg0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755906AbdACFvf (ORCPT ); Tue, 3 Jan 2017 00:51:35 -0500 Received: by mail-pg0-f41.google.com with SMTP id y62so158977092pgy.1 for ; Mon, 02 Jan 2017 21:51:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=+CAZxWcQ/ZKP/upachcS3Rsxz8dNELKdlMlVeWPp43M=; b=NUHcuJUTEkJZvm75zqhdK2zcogH0AnUFsnlAAQJbOX4KMufsSg8NXWeaG2jEk9Wdvn 1YFl77qJ9NVf6eR8EyiBIrmk3V2eIw2GypZVXxcx6rPSeVVv3+F8+bKcta4RCATF73BA jGQGycHHufPiZBuVHcY316oC+CAh79xpTfNWs= 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=+CAZxWcQ/ZKP/upachcS3Rsxz8dNELKdlMlVeWPp43M=; b=nq40WvfDhHF8Z36mT2q4k2BK87jmdvmHOrFFF9sdqAWrMKxap9rHFV5T736CrhOO5Y xGETETzx+t7b3MVlQiL4rbKFqLwcesFVJ+vJPMaUz5JddeNdbLMV71iAwtN0qa69b5vp unECCVsGwJqGE5j9nRQqqzIdGqVw+DUt7Y1gr1Oq5edJY1eWSJJHweN2wzyzdNuREDCB bu4uQIdY/4o6q7oFLQuuR8nnrb5+3UiAYyHm1pouSBVSOkLCeLb20joWEFaSy67RZjSx 6BzxthzsfBaMahYf8hfeRNnQ6DDiswTb8FD3dELW97sGIIdeBKfhoZoAeqC6oycsjP9/ 8gJw== X-Gm-Message-State: AIkVDXIts3LkKe3HVoe3ucTIjyuyocXgQHF0C1ywBRqXJxBg2NbMJRE/ZS4ojlIy9PbZVPnF X-Received: by 10.84.132.35 with SMTP id 32mr133198295ple.44.1483422694889; Mon, 02 Jan 2017 21:51:34 -0800 (PST) Received: from baolinwangubtpc.spreadtrum.com ([117.18.48.82]) by smtp.gmail.com with ESMTPSA id c71sm136929692pga.22.2017.01.02.21.51.32 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 02 Jan 2017 21:51:34 -0800 (PST) From: Baolin Wang To: myungjoo.ham@samsung.com, cw00.choi@samsung.com Cc: linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, baolin.wang@linaro.org, broonie@kernel.org, neilb@suse.com Subject: [PATCH] extcon: Add documentation for EXTCON_CHG_USB_SLOW/FAST Date: Tue, 3 Jan 2017 13:50:54 +0800 Message-Id: X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently there are no documentation for EXTCON_CHG_USB_SLOW/FAST charger connector. These names don't mean much and no guide to tell users how to use it, thus try to add documentation to make them clear. Suggested-by: NeilBrown Signed-off-by: Baolin Wang --- include/linux/extcon.h | 4 ++++ 1 file changed, 4 insertions(+) -- 1.7.9.5 diff --git a/include/linux/extcon.h b/include/linux/extcon.h index 0020123..ceec1f0 100644 --- a/include/linux/extcon.h +++ b/include/linux/extcon.h @@ -53,6 +53,10 @@ * the USB connector, which means EXTCON_CHG_USB_SDP should always * appear together with EXTCON_USB. The same as ACA charger connector, * EXTCON_CHG_USB_ACA would normally appear with EXTCON_USB_HOST. + * + * A cable of type EXTCON_CHG_USB_SLOW can provide at least 500mA of + * current at 5V. A cable of type EXTCON_CHG_USB_FAST can provide at + * least 1A of current at 5V. */ #define EXTCON_CHG_USB_SDP 5 /* Standard Downstream Port */ #define EXTCON_CHG_USB_DCP 6 /* Dedicated Charging Port */