From patchwork Tue Dec 6 20:07:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 13066259 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 740CDC47090 for ; Tue, 6 Dec 2022 20:15:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DAWSsNLMNfeOAtOaz5F/xABCt9pkyhsntxUyl1xwiGY=; b=l+yqOpTIs+7gWB e1TJG1BXueP25Bm/hWmApfzBQw1slbIyT3BmZhQtSA6W+gpZsnChSFSvbu/T2J04Zii9RV7WBruoi +8/cHetkAOY8weQx5J2a7bMmddGherOjv9pzfwmjxS+Jvg+qGrxPvixc40SuzidOljGwkPbFkFcC6 TQoA7q+IfgkKdUph7VqRox90n0VUPjB61nSi5KzcHKMdl8Umisot5/8oPDcLyk3V5hXQD7CpAaBP9 5wEakbcQFHvve6lc3e2yXEFbf0viPZHVEgkbQImJ51hCusmk/F/TsN7SyiMCOgPMwDo+6pLK+VG8D 0QDxlA1cXK6xUZ7ypwDA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p2eKW-001qJZ-Pm; Tue, 06 Dec 2022 20:14:17 +0000 Received: from 0001.3ffe.de ([2a01:4f8:c0c:9d57::1] helo=mail.3ffe.de) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p2eEl-001k6v-1q for linux-arm-kernel@lists.infradead.org; Tue, 06 Dec 2022 20:08:23 +0000 Received: from mwalle01.kontron.local. (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.3ffe.de (Postfix) with ESMTPSA id 845943BA3; Tue, 6 Dec 2022 21:07:52 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2022082101; t=1670357272; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FIvGlxXDqA7PdqR3w+bWH+qxGv8mVWV/x4LMDhqSiY0=; b=rBi9EfJaMdyOqQUMqPOWwci7D4uff7jojS2lmOnAJkn8bevd5D7mCEtthb9PQuqY3ddgRl wkjzEVI507MuSILbV/+SuzFupdSPRIjSbxOMCyAt2QVGdFquzhhv/X5KnCUhsCKfZmPU+v e6JJ8+UijsfJqi9c4sLkp3qaHFrl3SQ6qhIXDK7UCtLyU8TlLMS8pOmS80vQolkxuNxbUb l7DqCbQgZZCnyOIXolqqhlROkzgQAEJeZcqLDIwMgtzH/QPMZfdrPpREXoPuy3+34y3dEW fUO7WTPA5yOAdzb+5/y6jmvim3lQc6wzOmqONK/TNjLlj3mT3cEzan1/Op6mpQ== From: Michael Walle To: Jonathan Corbet , Srinivas Kandagatla , Miquel Raynal , Rob Herring , Frank Rowand , Sascha Hauer Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Michael Walle , Dan Carpenter Subject: [PATCH v5 14/21] nvmem: core: allow to modify a cell before adding it Date: Tue, 6 Dec 2022 21:07:33 +0100 Message-Id: <20221206200740.3567551-15-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221206200740.3567551-1-michael@walle.cc> References: <20221206200740.3567551-1-michael@walle.cc> MIME-Version: 1.0 X-Spam: Yes X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221206_120819_379015_146F3246 X-CRM114-Status: GOOD ( 14.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Provide a way to modify a cell before it will get added. This is useful to attach a custom post processing hook via a layout. Signed-off-by: Michael Walle --- changes since v4: - none changes since v3: - none changes since v2: - none changes since v1: - new patch drivers/nvmem/core.c | 4 ++++ include/linux/nvmem-provider.h | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 5afd4818cb34..2706fc5ed494 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -694,6 +694,7 @@ static int nvmem_validate_keepouts(struct nvmem_device *nvmem) static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) { + struct nvmem_layout *layout = nvmem->layout; struct device *dev = &nvmem->dev; struct device_node *child; const __be32 *addr; @@ -723,6 +724,9 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) info.np = of_node_get(child); + if (layout && layout->fixup_cell_info) + layout->fixup_cell_info(nvmem, layout, &info); + ret = nvmem_add_one_cell(nvmem, &info); kfree(info.name); if (ret) { diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h index 1930496d8854..bfaba5227ac9 100644 --- a/include/linux/nvmem-provider.h +++ b/include/linux/nvmem-provider.h @@ -157,6 +157,8 @@ struct nvmem_cell_table { * @add_cells: Will be called if a nvmem device is found which * has this layout. The function will add layout * specific cells with nvmem_add_one_cell(). + * @fixup_cell_info: Will be called before a cell is added. Can be + * used to modify the nvmem_cell_info. * @owner: Pointer to struct module. * @node: List node. * @@ -170,6 +172,9 @@ struct nvmem_layout { const struct of_device_id *of_match_table; int (*add_cells)(struct device *dev, struct nvmem_device *nvmem, struct nvmem_layout *layout); + void (*fixup_cell_info)(struct nvmem_device *nvmem, + struct nvmem_layout *layout, + struct nvmem_cell_info *cell); /* private */ struct module *owner;