From patchwork Fri Aug 10 08:04:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 956128 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="T/XW6U9Q"; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="hyVrD2uP"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41myW9120Cz9s5b for ; Fri, 10 Aug 2018 18:11:17 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=9Mp5ZdI/aI+iXQQSLyyA0RiU07Nd4EnNZsVYFjaCYu4=; b=T/XW6U9QwApUp7oNctVJxthVwr qgqZcHg+coHXklBdnXsYYxJxS755hstosakMBxc0TurO63OWJpEjNWMDJNR+zk8BcYtXpvm88NOkK lp3xvYt/BHT3hoNNpWAvovhNiykswdEhx39SKi6crROAQRqTb12iHHvfmTtrOKPAlSlMdeKuiYCHQ ks5fEdLCH3kKsC+hQ5IzgDrDhSHdcpLGu5wPcF4qfUigVYLvZLum5m/ez5Z3o2Hpwg7wJDjdke9Gt AbbzfzHqdtiiBaarAGFXHzQK3yIozqYBXbyv76aUk1pp1ECjbYtf08NsDE8BjkbiKglST8Nh1cpRo Yb6xtXmQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fo2Vg-0000eL-Q3; Fri, 10 Aug 2018 08:11:00 +0000 Received: from mail-wr1-x443.google.com ([2a00:1450:4864:20::443]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fo2Qe-0002Ao-FW for linux-mtd@lists.infradead.org; Fri, 10 Aug 2018 08:05:49 +0000 Received: by mail-wr1-x443.google.com with SMTP id h10-v6so7461098wre.6 for ; Fri, 10 Aug 2018 01:05:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=auDnQ2msgcUIg2cR1NJaWEIgp9qglPcIziHCsh4zH4c=; b=hyVrD2uPCuDfG/SIVDF3sBQ3x5jPiEIiYfLhv4zCCwnLblKSqKqaAzB+653FJmrvzf 0e7bBYw1HAepWkf2U4LVpYgUjfZrKoVVh4FsuGcBMtiS+/SWcQle/y6aNI/rL+0drHQg jcV8QsqKTyRZoOsyt22VpaW9vTwkAFYZTn1EnN/IUhBp0W1GI+T7fDyIzwF8CX0/JejB qn+I0si68PVnhgSRuSUiRLU6KdgC6+/mrYiJiPtsG7TV+4jK228jLAs+oFZgJk5AfIKU lxIvEZrz9jOSA4FcAwwpvSafLhEQSuDJiaUTmMC9+byu6RvzOqCz0+7HA0qUPdS3cEax mGZA== 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:in-reply-to :references; bh=auDnQ2msgcUIg2cR1NJaWEIgp9qglPcIziHCsh4zH4c=; b=FftT46K04u1ShqBkxFx838QJzmDY355OiqHADBQeRTDa2XJ9rA0omPNWsklkPGu7fp Qd4P1A6ZzefWvRDHIoGV8Vo90YLUcksJ5oPIuypYnnZZ3dB812U/ADfJNPvB3zlccP25 hOfxdbmZYiVERhz4yEcuuoQ8b8txNFt5Ee52zDWY/JGLvxXh+rsuUqCK0smCui8YVjur Gamgy5tamT8hEYhBGfyRZqL2oKi25fx6Eye5Aw9dhyjpJvPnVGnNlRs3XfduraJTkU9b Mu54vfOLtUE0hPAK8TDWkYcrg5rgJ3fvo9dmfgXajhXwZvuyMNrG7QolAVaIAcBNd2uy YoQA== X-Gm-Message-State: AOUpUlH4Rg+JPmhSEY6OYynX28l3YW0dRwNHaMsijiNpvWsX7EzVwPqj 4sh9TS633vM4uvXYxvCSXprlEg== X-Google-Smtp-Source: AA+uWPymFzn6I/ZI2lEGyhAt132NMNyj5wgE/WcirkCrpDDb/X28TuLJrG8472LzrmsGj41RTdm2uw== X-Received: by 2002:adf:c78e:: with SMTP id l14-v6mr3521076wrg.230.1533888335767; Fri, 10 Aug 2018 01:05:35 -0700 (PDT) Received: from brgl-bgdev.lan (LFbn-MAR-1-609-89.w90-118.abo.wanadoo.fr. [90.118.185.89]) by smtp.gmail.com with ESMTPSA id h7-v6sm9546405wrs.8.2018.08.10.01.05.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Aug 2018 01:05:35 -0700 (PDT) From: Bartosz Golaszewski To: Jonathan Corbet , Sekhar Nori , Kevin Hilman , Russell King , Arnd Bergmann , Greg Kroah-Hartman , David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Grygorii Strashko , "David S . Miller" , Srinivas Kandagatla , Naren , Mauro Carvalho Chehab , Andrew Morton , Lukas Wunner , Dan Carpenter , Florian Fainelli , Ivan Khoronzhuk , Sven Van Asbroeck , Paolo Abeni , Alban Bedel , Rob Herring , David Lechner , Andrew Lunn Subject: [PATCH v2 02/29] Documentation: nvmem: document lookup entries Date: Fri, 10 Aug 2018 10:04:59 +0200 Message-Id: <20180810080526.27207-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180810080526.27207-1-brgl@bgdev.pl> References: <20180810080526.27207-1-brgl@bgdev.pl> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180810_010548_541411_7639714A X-CRM114-Status: GOOD ( 17.01 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:443 listed in] [list.dnswl.org] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 T_DKIMWL_WL_MED DKIMwl.org - Whitelisted Medium sender X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-doc@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski , linux-mtd@lists.infradead.org, linux-i2c@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Bartosz Golaszewski Describe the usage of nvmem cell lookup tables. Signed-off-by: Bartosz Golaszewski --- Documentation/nvmem/nvmem.txt | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/Documentation/nvmem/nvmem.txt b/Documentation/nvmem/nvmem.txt index 8d8d8f58f96f..9d5e3ca2b4f3 100644 --- a/Documentation/nvmem/nvmem.txt +++ b/Documentation/nvmem/nvmem.txt @@ -58,6 +58,34 @@ static int qfprom_probe(struct platform_device *pdev) It is mandatory that the NVMEM provider has a regmap associated with its struct device. Failure to do would return error code from nvmem_register(). +Additionally it is possible to create nvmem cell lookup entries and register +them with the nvmem framework from machine code as shown in the example below: + +static struct nvmem_cell_lookup foobar_lookup = { + .info = { + .name = "mac-address", + .offset = 0xd000, + .bytes = ERH_ALEN, + }, + .nvmem_name = "foobar", +}; + +static void foobar_register(void) +{ + ... + nvmem_add_lookup_table(&foobar_lookup, 1); + ... +} + +A lookup entry table can be later removed if needed: + +static void foobar_fini(void) +{ + ... + nvmem_del_lookup_table(&foobar_lookup, 1); + ... +} + NVMEM Consumers +++++++++++++++