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GET /api/patches/2216175/?format=api
{ "id": 2216175, "url": "http://patchwork.ozlabs.org/api/patches/2216175/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260325-pinctrl-mux-v4-1-043c2c82e623@nxp.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260325-pinctrl-mux-v4-1-043c2c82e623@nxp.com>", "list_archive_url": null, "date": "2026-03-25T23:04:10", "name": "[v4,1/7] mux: add devm_mux_control_get_from_np() to get mux from child node", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2aa79ac1422c9cbbde6b5ead30d412218c0e073b", "submitter": { "id": 68011, "url": "http://patchwork.ozlabs.org/api/people/68011/?format=api", "name": "Frank Li", "email": "Frank.Li@nxp.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260325-pinctrl-mux-v4-1-043c2c82e623@nxp.com/mbox/", "series": [ { "id": 497519, "url": "http://patchwork.ozlabs.org/api/series/497519/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=497519", "date": "2026-03-25T23:04:16", "name": "pinctrl: Add generic pinctrl for board-level mux chips", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/497519/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216175/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216175/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-gpio+bounces-34176-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-gpio@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ 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"DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=VQlN2xveg+I0NatlzXlXz5x8nuvILqmuLkLNQrT9Y5E=;\n b=KAebUBXW1PyS1+izfTKeL74+hk5mV19IyWAPsV7fGCKN8QJiZPj2wj5aErtuJ0PGyMp4ZZBQ06AT3g88s2NPiaEOSmtO83fHx430CVamn25fpvifMst342rBxMgeK7kv3uISyxiDvdQULVOIrFAIAc0MthvImrgGuBuvJJ9zEdHKwjlfFZ4FYL00V6pnAOVFsvoPn/iL0RFMKByqGlicisuQ/QTas2rlcq99EFCyGJbY9LuQEFAs8bUS+/CNOa+wx2EnxV2eXOK5Qdjf2Hzi4aSABas4F7/9WAobyl7t4nqBg3YZra8BDmVDgQ+27iutrOofKTTZLhR/QApzxWEkfA==", "From": "Frank Li <Frank.Li@nxp.com>", "Date": "Wed, 25 Mar 2026 19:04:10 -0400", "Subject": "[PATCH v4 1/7] mux: add devm_mux_control_get_from_np() to get mux\n from child node", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260325-pinctrl-mux-v4-1-043c2c82e623@nxp.com>", "References": "<20260325-pinctrl-mux-v4-0-043c2c82e623@nxp.com>", "In-Reply-To": "<20260325-pinctrl-mux-v4-0-043c2c82e623@nxp.com>", "To": "Peter Rosin <peda@axentia.se>, Linus Walleij <linusw@kernel.org>,\n Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Conor Dooley <conor+dt@kernel.org>,\n =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= <rafal@milecki.pl>,\n Sascha Hauer <s.hauer@pengutronix.de>,\n Pengutronix Kernel Team <kernel@pengutronix.de>,\n Fabio Estevam <festevam@gmail.com>", "Cc": "linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,\n devicetree@vger.kernel.org, imx@lists.linux.dev,\n linux-arm-kernel@lists.infradead.org, Haibo Chen <haibo.chen@nxp.com>,\n Frank Li <Frank.Li@nxp.com>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1774479864; l=6472;\n i=Frank.Li@nxp.com; s=20240130; h=from:subject:message-id;\n bh=6lZaJD3A/F1rIGObW9t+4MUqh2HqQaormMVYGkjpB44=;\n b=UBwCBPDWkndu2tYnjhVObUsVHIenFN/OKIa0n+I0qQoML1V4/VX8S6rQ42TGGHC77t5wQvhVS\n 20q028gBT3pA35SHcllpK391y0ctbIN6ONiolUWqwlR7aijlQ5w5S4B", 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"X-OriginatorOrg": "nxp.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n cca445d5-ab94-4413-b770-08de8ac2dfeb", "X-MS-Exchange-CrossTenant-AuthSource": "DU0PR04MB9372.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "25 Mar 2026 23:04:32.0209\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "686ea1d3-bc2b-4c6f-a92c-d99c5c301635", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n WiEBePJ3jKMsTGSlJ1tRAhJSCjxiRcYMkysqohx7OR/vyPbCf0AIsd9bAiYRopn3JiM/IFsbixNivvUX9Ur/7Q==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "GV2PR04MB12140" }, "content": "Add new API devm_mux_control_get_from_np() to retrieve a mux control from\na specified child device node.\n\nMake devm_mux_control_get() call devm_mux_control_get_from_np() with a NULL\nnode parameter, which defaults to using the device's own of_node.\n\nSupport the following DT schema:\n\npinctrl@0 {\n uart-func {\n mux-state = <&mux_chip 0>;\n };\n\n spi-func {\n mux-state = <&mux_chip 1>;\n };\n};\n\nSigned-off-by: Frank Li <Frank.Li@nxp.com>\n---\nchange from v1 to v4\n- none\n---\n drivers/mux/core.c | 40 ++++++++++++++++++++++++----------------\n include/linux/mux/consumer.h | 16 ++++++++++++----\n 2 files changed, 36 insertions(+), 20 deletions(-)", "diff": "diff --git a/drivers/mux/core.c b/drivers/mux/core.c\nindex a3840fe0995fe0125432d34edd8ab0f2cd1a6e9a..bdd959389b4ee1b0b8a7367fadf2c148c8f2f0b1 100644\n--- a/drivers/mux/core.c\n+++ b/drivers/mux/core.c\n@@ -522,13 +522,15 @@ static struct mux_chip *of_find_mux_chip_by_node(struct device_node *np)\n * @mux_name: The name identifying the mux-control.\n * @state: Pointer to where the requested state is returned, or NULL when\n * the required multiplexer states are handled by other means.\n+ * @node: the device nodes, use dev->of_node if it is NULL.\n *\n * Return: A pointer to the mux-control, or an ERR_PTR with a negative errno.\n */\n static struct mux_control *mux_get(struct device *dev, const char *mux_name,\n-\t\t\t\t unsigned int *state)\n+\t\t\t\t unsigned int *state,\n+\t\t\t\t struct device_node *node)\n {\n-\tstruct device_node *np = dev->of_node;\n+\tstruct device_node *np = node ? node : dev->of_node;\n \tstruct of_phandle_args args;\n \tstruct mux_chip *mux_chip;\n \tunsigned int controller;\n@@ -617,7 +619,7 @@ static struct mux_control *mux_get(struct device *dev, const char *mux_name,\n */\n struct mux_control *mux_control_get(struct device *dev, const char *mux_name)\n {\n-\treturn mux_get(dev, mux_name, NULL);\n+\treturn mux_get(dev, mux_name, NULL, NULL);\n }\n EXPORT_SYMBOL_GPL(mux_control_get);\n \n@@ -641,15 +643,17 @@ static void devm_mux_control_release(struct device *dev, void *res)\n }\n \n /**\n- * devm_mux_control_get() - Get the mux-control for a device, with resource\n- *\t\t\t management.\n+ * devm_mux_control_get_from_np() - Get the mux-control for a device, with\n+ *\t\t\t\t resource management.\n * @dev: The device that needs a mux-control.\n * @mux_name: The name identifying the mux-control.\n+ * @np: the device nodes, use dev->of_node if it is NULL.\n *\n * Return: Pointer to the mux-control, or an ERR_PTR with a negative errno.\n */\n-struct mux_control *devm_mux_control_get(struct device *dev,\n-\t\t\t\t\t const char *mux_name)\n+struct mux_control *\n+devm_mux_control_get_from_np(struct device *dev, const char *mux_name,\n+\t\t\t struct device_node *np)\n {\n \tstruct mux_control **ptr, *mux;\n \n@@ -668,16 +672,18 @@ struct mux_control *devm_mux_control_get(struct device *dev,\n \n \treturn mux;\n }\n-EXPORT_SYMBOL_GPL(devm_mux_control_get);\n+EXPORT_SYMBOL_GPL(devm_mux_control_get_from_np);\n \n /*\n * mux_state_get() - Get the mux-state for a device.\n * @dev: The device that needs a mux-state.\n * @mux_name: The name identifying the mux-state.\n+ * @np: the device nodes, use dev->of_node if it is NULL.\n *\n * Return: A pointer to the mux-state, or an ERR_PTR with a negative errno.\n */\n-static struct mux_state *mux_state_get(struct device *dev, const char *mux_name)\n+static struct mux_state *\n+mux_state_get(struct device *dev, const char *mux_name, struct device_node *np)\n {\n \tstruct mux_state *mstate;\n \n@@ -685,7 +691,7 @@ static struct mux_state *mux_state_get(struct device *dev, const char *mux_name)\n \tif (!mstate)\n \t\treturn ERR_PTR(-ENOMEM);\n \n-\tmstate->mux = mux_get(dev, mux_name, &mstate->state);\n+\tmstate->mux = mux_get(dev, mux_name, &mstate->state, np);\n \tif (IS_ERR(mstate->mux)) {\n \t\tint err = PTR_ERR(mstate->mux);\n \n@@ -716,15 +722,17 @@ static void devm_mux_state_release(struct device *dev, void *res)\n }\n \n /**\n- * devm_mux_state_get() - Get the mux-state for a device, with resource\n- *\t\t\t management.\n+ * devm_mux_state_get_from_np() - Get the mux-state for a device, with resource\n+ *\t\t\t\t management.\n * @dev: The device that needs a mux-control.\n * @mux_name: The name identifying the mux-control.\n+ * @np: the device nodes, use dev->of_node if it is NULL.\n *\n * Return: Pointer to the mux-state, or an ERR_PTR with a negative errno.\n */\n-struct mux_state *devm_mux_state_get(struct device *dev,\n-\t\t\t\t const char *mux_name)\n+struct mux_state *\n+devm_mux_state_get_from_np(struct device *dev, const char *mux_name,\n+\t\t\t struct device_node *np)\n {\n \tstruct mux_state **ptr, *mstate;\n \n@@ -732,7 +740,7 @@ struct mux_state *devm_mux_state_get(struct device *dev,\n \tif (!ptr)\n \t\treturn ERR_PTR(-ENOMEM);\n \n-\tmstate = mux_state_get(dev, mux_name);\n+\tmstate = mux_state_get(dev, mux_name, np);\n \tif (IS_ERR(mstate)) {\n \t\tdevres_free(ptr);\n \t\treturn mstate;\n@@ -743,7 +751,7 @@ struct mux_state *devm_mux_state_get(struct device *dev,\n \n \treturn mstate;\n }\n-EXPORT_SYMBOL_GPL(devm_mux_state_get);\n+EXPORT_SYMBOL_GPL(devm_mux_state_get_from_np);\n \n /*\n * Using subsys_initcall instead of module_init here to try to ensure - for\ndiff --git a/include/linux/mux/consumer.h b/include/linux/mux/consumer.h\nindex 2e25c838f8312532040441ee618424b76378aad7..6300e091035323dd6158d52a55a109d43ef120aa 100644\n--- a/include/linux/mux/consumer.h\n+++ b/include/linux/mux/consumer.h\n@@ -56,9 +56,17 @@ int mux_state_deselect(struct mux_state *mstate);\n struct mux_control *mux_control_get(struct device *dev, const char *mux_name);\n void mux_control_put(struct mux_control *mux);\n \n-struct mux_control *devm_mux_control_get(struct device *dev,\n-\t\t\t\t\t const char *mux_name);\n-struct mux_state *devm_mux_state_get(struct device *dev,\n-\t\t\t\t const char *mux_name);\n+struct mux_control *\n+devm_mux_control_get_from_np(struct device *dev, const char *mux_name,\n+\t\t\t struct device_node *np);\n+\n+#define devm_mux_control_get(dev, mux_name)\t\t\\\n+\tdevm_mux_control_get_from_np(dev, mux_name, NULL)\n+\n+struct mux_state *\n+devm_mux_state_get_from_np(struct device *dev, const char *mux_name,\n+\t\t\t struct device_node *np);\n+#define devm_mux_state_get(dev, mux_name)\t\t\\\n+\tdevm_mux_state_get_from_np(dev, mux_name, NULL)\n \n #endif /* _LINUX_MUX_CONSUMER_H */\n", "prefixes": [ "v4", "1/7" ] }