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[194.187.74.233]) by smtp.gmail.com with ESMTPSA id p15-20020a2e740f000000b00295b588d21dsm411083ljc.49.2023.03.17.06.26.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Mar 2023 06:26:26 -0700 (PDT) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: Rob Herring , Krzysztof Kozlowski , Srinivas Kandagatla Cc: Greg Kroah-Hartman , Miquel Raynal , Michael Walle , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?UmFm?= =?utf-8?b?YcWCIE1pxYJlY2tp?= Subject: [PATCH V4 1/4] dt-bindings: nvmem: layouts: add fixed-layout Date: Fri, 17 Mar 2023 14:26:17 +0100 Message-Id: <20230317132620.31142-2-zajec5@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230317132620.31142-1-zajec5@gmail.com> References: <20230317132620.31142-1-zajec5@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760622089354247202?= X-GMAIL-MSGID: =?utf-8?q?1760622089354247202?= From: Rafał Miłecki With the introduction of NVMEM layouts, new NVMEM content structures should be defined as such. We should also try to convert / migrate existing NVMEM content bindings to layouts. This commit handles fixed NVMEM cells. So far they had to be defined directly - as device subnodes. With this change it's allowed to put them in the DT node named "nvmem-layout". Having NVMEM cells in separated node is prefered as it draws a nice line between NVMEM device and its content. It results in cleaner bindings. FWIW a very similiar situation has happened to MTD devices and their partitions: see commit 5d96ea42eb63 ("dt-bindings: mtd: Clarify all partition subnodes"). Signed-off-by: Rafał Miłecki --- .../bindings/nvmem/layouts/fixed-cell.yaml | 31 ++++++++++++ .../bindings/nvmem/layouts/fixed-layout.yaml | 49 +++++++++++++++++++ .../bindings/nvmem/layouts/nvmem-layout.yaml | 5 +- .../devicetree/bindings/nvmem/nvmem.yaml | 19 +------ 4 files changed, 83 insertions(+), 21 deletions(-) create mode 100644 Documentation/devicetree/bindings/nvmem/layouts/fixed-cell.yaml create mode 100644 Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml diff --git a/Documentation/devicetree/bindings/nvmem/layouts/fixed-cell.yaml b/Documentation/devicetree/bindings/nvmem/layouts/fixed-cell.yaml new file mode 100644 index 000000000000..e698098450e1 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/layouts/fixed-cell.yaml @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/layouts/fixed-cell.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Fixed offset & size NVMEM cell + +maintainers: + - Rafał Miłecki + - Srinivas Kandagatla + +properties: + reg: + maxItems: 1 + + bits: + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - minimum: 0 + maximum: 7 + description: + Offset in bit within the address range specified by reg. + - minimum: 1 + description: + Size in bit within the address range specified by reg. + +required: + - reg + +additionalProperties: true diff --git a/Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml b/Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml new file mode 100644 index 000000000000..f7496ba28f33 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/layouts/fixed-layout.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/layouts/fixed-layout.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVMEM layout for fixed NVMEM cells + +description: + Many NVMEM devices have hardcoded cells layout (offset and size of defined + NVMEM content doesn't change). + + This binding allows defining such NVMEM layout with its cells. It can be used + on top of any NVMEM device. + +maintainers: + - Rafał Miłecki + +properties: + compatible: + const: fixed-layout + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + +patternProperties: + "@[a-f0-9]+$": + type: object + $ref: fixed-cell.yaml + +required: + - compatible + +additionalProperties: false + +examples: + - | + nvmem-layout { + compatible = "fixed-layout"; + #address-cells = <1>; + #size-cells = <1>; + + calibration@4000 { + reg = <0x4000 0x100>; + }; + }; diff --git a/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml b/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml index 8512ee538c4c..3b40f7880774 100644 --- a/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml +++ b/Documentation/devicetree/bindings/nvmem/layouts/nvmem-layout.yaml @@ -18,16 +18,13 @@ description: | perform their parsing. The nvmem-layout container is here to describe these. oneOf: + - $ref: fixed-layout.yaml - $ref: kontron,sl28-vpd.yaml - $ref: onie,tlv-layout.yaml properties: compatible: true - '#address-cells': false - - '#size-cells': false - required: - compatible diff --git a/Documentation/devicetree/bindings/nvmem/nvmem.yaml b/Documentation/devicetree/bindings/nvmem/nvmem.yaml index 75bb93dda9df..b79f1bb795fb 100644 --- a/Documentation/devicetree/bindings/nvmem/nvmem.yaml +++ b/Documentation/devicetree/bindings/nvmem/nvmem.yaml @@ -49,23 +49,8 @@ properties: patternProperties: "@[0-9a-f]+(,[0-7])?$": type: object - - properties: - reg: - maxItems: 1 - description: - Offset and size in bytes within the storage device. - - bits: - $ref: /schemas/types.yaml#/definitions/uint32-array - items: - - minimum: 0 - maximum: 7 - description: - Offset in bit within the address range specified by reg. - - minimum: 1 - description: - Size in bit within the address range specified by reg. + $ref: layouts/fixed-cell.yaml + deprecated: true additionalProperties: true From patchwork Fri Mar 17 13:26:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= X-Patchwork-Id: 71291 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp357934wrt; Fri, 17 Mar 2023 07:04:05 -0700 (PDT) X-Google-Smtp-Source: AK7set9qnko2toCxNG3fFWxx+a+vvHlAwD3acdpR5tMNUWEFcJc+6e1AO6DV64E31LHjFVD5UY9T X-Received: by 2002:a05:6a20:7f8c:b0:c7:af88:3dd8 with SMTP id d12-20020a056a207f8c00b000c7af883dd8mr9628782pzj.6.1679061845033; Fri, 17 Mar 2023 07:04:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679061845; cv=none; d=google.com; s=arc-20160816; b=Fe6DTNjPQpAZ6DdSwVENToMM1AyEYlcrUuZUH2/4QLf2bC6SlfUbdQcg6fRPI4YKaQ HGUVxCMx7IzX02BwGtug4O0A1vtr5BvIzM2RBo/bc5rNAsPojs6h+sB0Juqqi+TMqbPN lfNbMGCmKCtuhn6OsTwJjx3LJlDv6bOM+hVct6elnnp3kZswaAydaGPdUNZDNnYaGSy2 cEI5wcJ2c6nKWM3UaDEZJOF5/kBNG0PWNNkBuLxK82n5vW4mJYheQOAqSFrkS7KKc/l3 avTilqC0oII9qf0uSvXBieu0p5f2P6d6tYS1DtSG3tbKdRNhyAw1afUMebnRgpZhooaT dUOw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=pnovJjydcD88B/V7T4Cq2Usmwr/ZvKcG59naHHxKAo4=; b=jG+vmJRiMNY+xp6GCXXXF2i62Ajca7JbldTYL9llcwNFrTRhSNUXA9V8MghR7BJJ82 zc14dppalZinTzvZ1agEeTyDW5q3ys2PxajE7dz334UwA/0jqRQLdA7drfwdDm743PIH JZetGYlKdoCfIwearDZrdgJU7FzghhpqpYbPFnaipW/zU82T+Ol5ahjgOMfMYW7zTbSX NDAGMyjIirf53kM4+QW//OM8pqBgWY4hLH9JZqXx84QCmT5vSFci7Lt0+jCqn/6EhzLK nAhGgWVtOIDn/0cIYa5XOWrtAu8ki+IVHu6UWDwId0kab2qt+A2Nc4qMPzSLndtY/xAQ u+Vw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=ERZqWXNG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. 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[194.187.74.233]) by smtp.gmail.com with ESMTPSA id p15-20020a2e740f000000b00295b588d21dsm411083ljc.49.2023.03.17.06.26.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Mar 2023 06:26:28 -0700 (PDT) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: Rob Herring , Krzysztof Kozlowski , Srinivas Kandagatla Cc: Greg Kroah-Hartman , Miquel Raynal , Michael Walle , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?UmFm?= =?utf-8?b?YcWCIE1pxYJlY2tp?= Subject: [PATCH V4 2/4] dt-bindings: nvmem: convert base example to use NVMEM fixed cells layout Date: Fri, 17 Mar 2023 14:26:18 +0100 Message-Id: <20230317132620.31142-3-zajec5@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230317132620.31142-1-zajec5@gmail.com> References: <20230317132620.31142-1-zajec5@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760623953579681266?= X-GMAIL-MSGID: =?utf-8?q?1760623953579681266?= From: Rafał Miłecki With support for the "fixed-layout" binding it's possible and preferred now to define fixed NVMEM cells in the layout node. Do that for the binding example binding. Signed-off-by: Rafał Miłecki --- .../devicetree/bindings/nvmem/nvmem.yaml | 42 +++++++++++-------- 1 file changed, 24 insertions(+), 18 deletions(-) diff --git a/Documentation/devicetree/bindings/nvmem/nvmem.yaml b/Documentation/devicetree/bindings/nvmem/nvmem.yaml index b79f1bb795fb..980244100690 100644 --- a/Documentation/devicetree/bindings/nvmem/nvmem.yaml +++ b/Documentation/devicetree/bindings/nvmem/nvmem.yaml @@ -68,24 +68,30 @@ examples: /* ... */ - /* Data cells */ - tsens_calibration: calib@404 { - reg = <0x404 0x10>; - }; - - tsens_calibration_bckp: calib_bckp@504 { - reg = <0x504 0x11>; - bits = <6 128>; - }; - - pvs_version: pvs-version@6 { - reg = <0x6 0x2>; - bits = <7 2>; - }; - - speed_bin: speed-bin@c{ - reg = <0xc 0x1>; - bits = <2 3>; + nvmem-layout { + compatible = "fixed-layout"; + #address-cells = <1>; + #size-cells = <1>; + + /* Data cells */ + tsens_calibration: calib@404 { + reg = <0x404 0x10>; + }; + + tsens_calibration_bckp: calib_bckp@504 { + reg = <0x504 0x11>; + bits = <6 128>; + }; + + pvs_version: pvs-version@6 { + reg = <0x6 0x2>; + bits = <7 2>; + }; + + speed_bin: speed-bin@c{ + reg = <0xc 0x1>; + bits = <2 3>; + }; }; }; From patchwork Fri Mar 17 13:26:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= X-Patchwork-Id: 71289 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp356337wrt; Fri, 17 Mar 2023 07:02:09 -0700 (PDT) X-Google-Smtp-Source: AK7set8TJi0fn+nzzXafVNI/TpaPS2oKzk9/+mN59iTXpOcts+QBpQLM5yoRDHrLD4KlPTIqJZ4a X-Received: by 2002:a05:6a20:8e1e:b0:cd:ed5c:4ec with SMTP id y30-20020a056a208e1e00b000cded5c04ecmr13140804pzj.3.1679061729452; Fri, 17 Mar 2023 07:02:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679061729; cv=none; d=google.com; s=arc-20160816; b=LWQtNAzzO3/c2wcPb2MgK1Lh0+Ked9dZPTZ+UsFwCsAC6tVenre9RhgmkFM6EcRh46 O3nD+WF8ieFy94v1EFX/ANR9aFYY60bX7GDpAgCEXzS3bPMoPzMcV/uWEYD+B95qVmk7 FVsBxBrPKS+VQXr9tRXMYRdMYF2hPYIdymukdZR2iq/Yc2hKiq3+43qEIOg7WL8Lg3Is TKkDqDu8mvfAPaKAP1dXllCX7K0tiCNCWBfrj7n73UCpn4YW2Kjtxuqp3uXBdxhz8zHR bw47d/ipUI08qp3KF3Og/aQrI1NUK7f4hLZVIIbJlKi1L7+Yf+65lq7YnrZajkzWp1m9 cyZQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=QG0u4cQmxwUjiK1WMXH1+VMGQyE9TfyJFnQDUv5VBmQ=; b=ISSxHT798iQXIvWET2tRfy0E9zy+N7X5p6V96qpKRP/5e7iUXXlyrFIlTtNUeJIHQa qgUOSR0rbTCivdYzeykWI3n/tRleCbnCk5hLN8utA/sjkB9DGceFwsqekQpvts9IHFYO l0pvsFZmxQd5BkQ8FRfh4Q0o+8Z7NhMvNOqm+AwLy7etqkL/2Grfc2vAz4hWldnnggQP JeyBDVz/urx4yZ6hzSTRDg70JvAVU5AwyXJQR7Aj0uSRfIfB3WqRAJ2OYwiO0/Wa9MZJ VjgZcaq65yb85JP2FMLHpLwJ/EdjzjZlPh7cFL+PJ9XXEAA2/dv+lncURqUOX7Nlygu7 p7ow== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=pdB5G0Um; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. 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[194.187.74.233]) by smtp.gmail.com with ESMTPSA id p15-20020a2e740f000000b00295b588d21dsm411083ljc.49.2023.03.17.06.26.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Mar 2023 06:26:29 -0700 (PDT) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: Rob Herring , Krzysztof Kozlowski , Srinivas Kandagatla Cc: Greg Kroah-Hartman , Miquel Raynal , Michael Walle , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?UmFm?= =?utf-8?b?YcWCIE1pxYJlY2tp?= Subject: [PATCH V4 3/4] nvmem: core: export nvmem_add_cells_from_of() Date: Fri, 17 Mar 2023 14:26:19 +0100 Message-Id: <20230317132620.31142-4-zajec5@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230317132620.31142-1-zajec5@gmail.com> References: <20230317132620.31142-1-zajec5@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760623832254689332?= X-GMAIL-MSGID: =?utf-8?q?1760623832254689332?= From: Rafał Miłecki This symbol can be cleanly re-used by the fixed NVMEM layout driver. Allow passing DT node as argument to make it a bit more generic. Signed-off-by: Rafał Miłecki --- drivers/nvmem/core.c | 7 ++++--- include/linux/nvmem-provider.h | 7 +++++++ 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 212c5ba5789f..985a42cfb0a2 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -694,7 +694,7 @@ static int nvmem_validate_keepouts(struct nvmem_device *nvmem) return 0; } -static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) +int nvmem_add_cells_from_of(struct nvmem_device *nvmem, struct device_node *np) { struct nvmem_layout *layout = nvmem->layout; struct device *dev = &nvmem->dev; @@ -702,7 +702,7 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) const __be32 *addr; int len, ret; - for_each_child_of_node(dev->of_node, child) { + for_each_child_of_node(np, child) { struct nvmem_cell_info info = {0}; addr = of_get_property(child, "reg", &len); @@ -739,6 +739,7 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) return 0; } +EXPORT_SYMBOL_GPL(nvmem_add_cells_from_of); int __nvmem_layout_register(struct nvmem_layout *layout, struct module *owner) { @@ -970,7 +971,7 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) if (rval) goto err_remove_cells; - rval = nvmem_add_cells_from_of(nvmem); + rval = nvmem_add_cells_from_of(nvmem, nvmem->dev.of_node); if (rval) goto err_remove_cells; diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h index 3e97c8315c45..2b5410be2636 100644 --- a/include/linux/nvmem-provider.h +++ b/include/linux/nvmem-provider.h @@ -195,6 +195,8 @@ void nvmem_del_cell_table(struct nvmem_cell_table *table); int nvmem_add_one_cell(struct nvmem_device *nvmem, const struct nvmem_cell_info *info); +int nvmem_add_cells_from_of(struct nvmem_device *nvmem, struct device_node *np); + int __nvmem_layout_register(struct nvmem_layout *layout, struct module *owner); #define nvmem_layout_register(layout) \ __nvmem_layout_register(layout, THIS_MODULE) @@ -226,6 +228,11 @@ static inline int nvmem_add_one_cell(struct nvmem_device *nvmem, return -EOPNOTSUPP; } +static int nvmem_add_cells_from_of(struct nvmem_device *nvmem, struct device_node *np) +{ + return -EOPNOTSUPP; +} + static inline int nvmem_layout_register(struct nvmem_layout *layout) { return -EOPNOTSUPP; From patchwork Fri Mar 17 13:26:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= X-Patchwork-Id: 71290 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp357182wrt; Fri, 17 Mar 2023 07:03:11 -0700 (PDT) X-Google-Smtp-Source: AK7set+ZFzJWxl9/wkrE9G/2PVcEVeacnmo7zlq+pJY9nT01k9Z04uk6JGArTnPIHvxfpJ1Y7ENF X-Received: by 2002:a17:903:3291:b0:1a1:956d:2281 with SMTP id jh17-20020a170903329100b001a1956d2281mr5432973plb.3.1679061790915; Fri, 17 Mar 2023 07:03:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679061790; cv=none; d=google.com; s=arc-20160816; b=hPgxU10iDadSAI+IJf6zehZ7waqwYXgMzKgdxIwHRUpq9Mck/Rt7ge2gQ9tr9wEYeh 9nfc7KEO90h3wp5se3VL1ZrfCqg1jZuZuAqwsL5j+rqKEkSMwz/zWnkkuvSeSSIPtXE/ LN7PDzsGxevPKxyDLr3qFQpcbnweBlhrqza9rU7aR2pVYTiu3j+f/aj5jyGv7U21aSOc 5jtufT9Dlc7z6jydIMMP6ej047RV1oZCnVjOKg3HJ7wJbUDZEwyxpwU3zPDfWO4GzdoX Dw/Poov4nSyDEFFWoZmgIzktlgcjBUYChoDCLaWdil7DSzaYrExHQoNS6atZSp/pf3Bb 5UGg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=bWn5xXqBj6yi7+enhvrMvqUOn19onL6aIZYPMgopTDA=; b=hXW841L+BDeXsCTTmvg8LVgjwrI8PBwUe8m6shcnJ/ZSBtzywxg56Gi5I+Umy7mN+Z WhYQa0aX/0WfQi7mhJo7r54+pcFfO4lBFcHb99oF7CR9KpYqUbCcBO07e0RDFqeIR4oQ fV/4RyRqLkZZ8bb7NqO33zuOLodudxlMDesFnAIc4uzoaifXQaXkXPjNoaJcvlfz72Ha lBoH9W4sPZ8433GWX67PZ0CIemIyt9zZIgScOY2EewvSxwMl3vlYRybBKxAjOZ6vIjRM vPYk33oWAb8HFhQvfm8slS11N7VGmaGxiY02Zl7ZfXX4XvqMp94AZFkSy7rJM3E206xh 9F+g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=Oj6V2PCi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. 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[194.187.74.233]) by smtp.gmail.com with ESMTPSA id p15-20020a2e740f000000b00295b588d21dsm411083ljc.49.2023.03.17.06.26.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Mar 2023 06:26:31 -0700 (PDT) From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= To: Rob Herring , Krzysztof Kozlowski , Srinivas Kandagatla Cc: Greg Kroah-Hartman , Miquel Raynal , Michael Walle , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?b?UmFm?= =?utf-8?b?YcWCIE1pxYJlY2tp?= Subject: [PATCH V4 4/4] nvmem: layouts: add fixed cells layout Date: Fri, 17 Mar 2023 14:26:20 +0100 Message-Id: <20230317132620.31142-5-zajec5@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230317132620.31142-1-zajec5@gmail.com> References: <20230317132620.31142-1-zajec5@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760623896668530482?= X-GMAIL-MSGID: =?utf-8?q?1760623896668530482?= From: Rafał Miłecki This adds a driver for the "fixed-layout" NVMEM layout binding. It allows defining NVMEM cells in a layout DT node named "nvmem-layout". Signed-off-by: Rafał Miłecki --- drivers/nvmem/layouts/Kconfig | 8 +++++++ drivers/nvmem/layouts/Makefile | 1 + drivers/nvmem/layouts/fixed.c | 41 ++++++++++++++++++++++++++++++++++ 3 files changed, 50 insertions(+) create mode 100644 drivers/nvmem/layouts/fixed.c diff --git a/drivers/nvmem/layouts/Kconfig b/drivers/nvmem/layouts/Kconfig index 7ff1ee1c1f05..2ebbde7b15b2 100644 --- a/drivers/nvmem/layouts/Kconfig +++ b/drivers/nvmem/layouts/Kconfig @@ -2,6 +2,14 @@ menu "Layout Types" +config NVMEM_LAYOUT_FIXED + tristate "Fixed cells layout support" + help + Say Y here if you want to support layout with fixed cells (hardcoded + offsets and sizes). + + If unsure, say N. + config NVMEM_LAYOUT_SL28_VPD tristate "Kontron sl28 VPD layout support" select CRC8 diff --git a/drivers/nvmem/layouts/Makefile b/drivers/nvmem/layouts/Makefile index 2974bd7d33ed..449dd893f968 100644 --- a/drivers/nvmem/layouts/Makefile +++ b/drivers/nvmem/layouts/Makefile @@ -3,5 +3,6 @@ # Makefile for nvmem layouts. # +obj-$(CONFIG_NVMEM_LAYOUT_FIXED) += fixed.o obj-$(CONFIG_NVMEM_LAYOUT_SL28_VPD) += sl28vpd.o obj-$(CONFIG_NVMEM_LAYOUT_ONIE_TLV) += onie-tlv.o diff --git a/drivers/nvmem/layouts/fixed.c b/drivers/nvmem/layouts/fixed.c new file mode 100644 index 000000000000..b8d2f141d272 --- /dev/null +++ b/drivers/nvmem/layouts/fixed.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include + +static int fixed_add_cells(struct device *dev, struct nvmem_device *nvmem, + struct nvmem_layout *layout) +{ + struct device_node *layout_np; + int err; + + layout_np = of_nvmem_layout_get_container(nvmem); + if (!layout_np) + return -ENOENT; + + err = nvmem_add_cells_from_of(nvmem, layout_np); + + of_node_put(layout_np); + + return err; +} + +static const struct of_device_id fixed_of_match_table[] = { + { .compatible = "fixed-layout" }, + {}, +}; +MODULE_DEVICE_TABLE(of, fixed_of_match_table); + +struct nvmem_layout fixed_nvmem_layout = { + .name = "fixed-layout", + .of_match_table = fixed_of_match_table, + .add_cells = fixed_add_cells, +}; + +module_nvmem_layout_driver(fixed_nvmem_layout); + +MODULE_AUTHOR("Rafał Miłecki"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(of, fixed_of_match_table);