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Apr 2026 10:24:22.0929\n (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n ebf378d9-4493-4b0c-4742-08de9946d460", "X-MS-Exchange-CrossTenant-Id": "e5e7e96e-8a28-45d6-9093-a40dd5b51a57", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=e5e7e96e-8a28-45d6-9093-a40dd5b51a57;Ip=[162.55.72.218];Helo=[hz-deliver02.de.seppmail.cloud]", "X-MS-Exchange-CrossTenant-AuthSource": "\n\tAM3PEPF0000A799.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem" }, "content": "This series is an RFC for adding port-mapped I/O (PMIO) support to\ngpio-mmio.\n\nThis v2 comes with all suggestions done by Linux Walleij in the\ninitial review [1].\n\nFor keeping compatibility with gpio_generic_chip, a new _config struct\nwas added instead of extending gpio_generic_chip_config. Using such new\n_config struct, called gpio_generic_chip_port_config, requires a new API\nfunction gpio_generic_chip_port_init() to access to that new structure.\n\nBesides, structure gpio_chip_reg has been transformed to union. It reflects\nbetter that MMIO and PMIO chips will only use one of them, saving memory\nas well.\n\nI'm still sending this as RFC but I don't know if I should send this as a\nregular PATCH series.\n\n[1] https://lore.kernel.org/linux-gpio/20260407184805.807328-1-dev-josejavier.rodriguez@duagon.com\n\n---\nChanges in v2:\n - Move struct gpio_chip_reg to union gpio_chip_reg.\n - Add a new gpio-mmio API function to init PMIO generic chips.\n\nJose Javier Rodriguez Barbarin (3):\n gpio: mmio: convert accessors to generic register descriptors\n gpio: mmio: add port-mapped read/write callbacks\n gpio: mmio: add port-mapped support for gpio_generic_chip\n\n drivers/gpio/gpio-mmio.c | 330 ++++++++++++++++++++++++-----------\n include/linux/gpio/generic.h | 78 ++++++++-\n 2 files changed, 300 insertions(+), 108 deletions(-)" }