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GET /api/1.1/patches/2220635/?format=api
{ "id": 2220635, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2220635/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260407184805.807328-2-dev-josejavier.rodriguez@duagon.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260407184805.807328-2-dev-josejavier.rodriguez@duagon.com>", "date": "2026-04-07T18:48:01", "name": "[RFC,1/5] gpio: generic: add a generic register wrapper for MMIO and PMIO", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "39bf85c2c986bb689648c67b4fbe31d4efee1700", "submitter": { "id": 92011, "url": "http://patchwork.ozlabs.org/api/1.1/people/92011/?format=api", "name": "Jose Javier Rodriguez Barbarin", "email": "dev-josejavier.rodriguez@duagon.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20260407184805.807328-2-dev-josejavier.rodriguez@duagon.com/mbox/", "series": [ { "id": 499020, "url": "http://patchwork.ozlabs.org/api/1.1/series/499020/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=499020", "date": "2026-04-07T18:48:01", "name": "gpio: add PMIO support to gpio-mmio", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499020/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2220635/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2220635/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-gpio+bounces-34838-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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"385a42524b254aafafe27cd15d8621e2", "From": "Jose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@duagon.com>", "To": "linusw@kernel.org,\n\tbrgl@kernel.org", "Cc": "linux-gpio@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tJose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@duagon.com>", "Subject": "[RFC PATCH 1/5] gpio: generic: add a generic register wrapper for\n MMIO and PMIO", "Date": "Tue, 7 Apr 2026 20:48:01 +0200", "Message-ID": "<20260407184805.807328-2-dev-josejavier.rodriguez@duagon.com>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260407184805.807328-1-dev-josejavier.rodriguez@duagon.com>", "References": "<20260407184805.807328-1-dev-josejavier.rodriguez@duagon.com>", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": "MA3P292CA0072.ESPP292.PROD.OUTLOOK.COM\n (2603:10a6:250:49::17) To ZR0P278MB0523.CHEP278.PROD.OUTLOOK.COM\n (2603:10a6:910:34::6)", "Precedence": "bulk", "X-Mailing-List": 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"X-MS-Exchange-CrossTenant-OriginalArrivalTime": "07 Apr 2026 18:49:18.6512\n (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n bcb99e0a-195d-4ff6-fada-08de94d65fff", "X-MS-Exchange-CrossTenant-Id": "e5e7e96e-8a28-45d6-9093-a40dd5b51a57", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=e5e7e96e-8a28-45d6-9093-a40dd5b51a57;Ip=[2a01:4f8:a0:13df::219];Helo=[hz-deliver01.de.seppmail.cloud]", "X-MS-Exchange-CrossTenant-AuthSource": "\n\tDB1PEPF000509EE.eurprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem" }, "content": "For adding support to port-mapped devices within gpio_generic_chip, a new\ndata type is required for passing to read_reg() and write_reg()\ncallbacks as I/O port-mapped and memory-mapped registers use different\ndata types.\n\nIntroduce a new struct gpio_chip_reg to encapsulate mmio addresses and\nI/O port numbers.\n\nSigned-off-by: Jose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@duagon.com>\n---\n include/linux/gpio/generic.h | 14 ++++++++++++++\n 1 file changed, 14 insertions(+)", "diff": "diff --git a/include/linux/gpio/generic.h b/include/linux/gpio/generic.h\nindex ff566dc9c3cb..87c624070901 100644\n--- a/include/linux/gpio/generic.h\n+++ b/include/linux/gpio/generic.h\n@@ -18,6 +18,7 @@ struct device;\n #define GPIO_GENERIC_NO_SET_ON_INPUT\t\tBIT(6)\n #define GPIO_GENERIC_PINCTRL_BACKEND\t\tBIT(7) /* Call pinctrl direction setters */\n #define GPIO_GENERIC_NO_INPUT\t\t\tBIT(8) /* only output */\n+#define GPIO_GENERIC_PORT_MAPPED\t\tBIT(9) /* port-mapped */\n \n /**\n * struct gpio_generic_chip_config - Generic GPIO chip configuration data\n@@ -56,6 +57,19 @@ struct gpio_generic_chip_config {\n \tunsigned long flags;\n };\n \n+/**\n+ * struct gpio_chip_reg - Generic GPIO chip register descriptor for MMIO or port-mapped I/O\n+ * @mmio: MMIO register address.\n+ * @port: I/O Port register address.\n+ *\n+ * Describes a GPIO chip register located either in MMIO space or in\n+ * port-mapped I/O space.\n+ */\n+struct gpio_chip_reg {\n+\tvoid __iomem *mmio;\n+\tunsigned long port;\n+};\n+\n /**\n * struct gpio_generic_chip - Generic GPIO chip implementation.\n * @gc: The underlying struct gpio_chip object, implementing low-level GPIO\n", "prefixes": [ "RFC", "1/5" ] }