From patchwork Thu Sep 1 22:18:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 12963399 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 4C7E3ECAAD3 for ; Thu, 1 Sep 2022 22:29:52 +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=rGystTDL7EfIITRGNW3xwQQZ0ZSpD4ZmgTSXGtUC4fI=; b=EpS8fwq9piN9AU 9jNqHBBgeqouoPIEnS8GNRLiaa6q3m8b2dhvK42B8w0EGPbNjSNsDH7Cf+8xoIAyms40uJTj8G+Oo sJb4o96yuTe/GxyOT0GyKQew8WBguzBKPYdyRRPFvpjVgpiZbYent0pOLx7tHJwQ6b37bRthd4I2D 5qUg9mA608/JLxEYl3KQ5l5VTnefPeDt8nW3FWYVCn653nSLFYj1luOg22yvspF5WtEfpd6hCDYs6 zF12P3TWMlkfWL3gXJQgj7GkeQ/9ZzGWWL55mT/0LbFEiyNqawrTzmoZFSiVSS83j4hvtQ3hzFG4J wHQFN6h1rqsVzywlw3nA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oTsfr-00FLS7-T7; Thu, 01 Sep 2022 22:28:37 +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 1oTsWv-00FEfA-Q6; Thu, 01 Sep 2022 22:19:25 +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 866DC21EE; Fri, 2 Sep 2022 00:19:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2022082101; t=1662070752; 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=c5Tm5NgUjgsDKZgk1Ba857CClebez+/VRvwjllvM7EA=; b=QNDnFCwPPEMrDdiAIZjnc2qr2trT/+wfriMAeCUHW8mtz+WDlqDTeANWBO5gS1DNDamyve Tp5PzhSInvwBAkzYfDxM5PFGHVSl/bf/5TkQpiy6w2YZsI1qflDNntb8pCRFNw1IE6A8yE sPHs7j77+ii7LMYbjX8bs2sSA/W98qdJ8o2gDqoQlglj2kdIsZnPDYICFeyXo98Yy0zR31 cNGc4SChoh1TGv8urKq891kNEjdcQ4ToUHFXbNkv+4O1vIVPOrSOfj3cE1uPFBO28p+f0f y02dgjpM1Qc74ll54vCguJEHlx0Htq1ryuPWzebjdyjTY1hHwUZEn1bh9Eeuow== From: Michael Walle To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Krzysztof Kozlowski , Srinivas Kandagatla , Shawn Guo , Li Yang , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Frank Rowand Cc: linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Ahmad Fatoum , Philipp Zabel , Michael Walle Subject: [PATCH v2 10/20] nvmem: core: allow to modify a cell before adding it Date: Fri, 2 Sep 2022 00:18:47 +0200 Message-Id: <20220901221857.2600340-11-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220901221857.2600340-1-michael@walle.cc> References: <20220901221857.2600340-1-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-20220901_151922_088204_D5F23594 X-CRM114-Status: GOOD ( 13.97 ) 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 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 02d0a7099d9a..3b65512762b9 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -693,6 +693,7 @@ 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 nvmem_cell_entry *cell; struct device_node *child; @@ -729,6 +730,9 @@ 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 cb488b338d6f..9cb340764b89 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;