devm_regmap_init(9)

🌸 NAME 🌸

devm_regmap_init — Initialise managed register map

Okay so hi bestie 💖 welcome to devm_regmap_init(9), live from the Kernel API Manual. This is the managed-register-map init situation, and yes it's giving kernel-core realness 👑

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✨ SYNOPSIS ✨

devm_regmap_init (dev , bus , bus_context , config );

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🎀 ARGUMENTS 🎀

• dev — The device that will be interacted with 🫶
• bus — Bus-specific callbacks to use with the device ✨
• bus_context — Data passed to those bus-specific callbacks 💅
• config — Configuration for the register map 🎀

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🦋 DESCRIPTION 🦋

So the return value is either an ERR_PTR on error, or a valid pointer to a struct regmap. That's the whole vibe check: error pointer or actual regmap pointer, no in-between 😌

This function should generally not be called directly — it should be called by bus-specific init functions. Like, it's the backstage pass, not the main entrance 💀

The map will be automatically freed by the device management code. Managed means managed, bestie ✨

⚠️ real talk: don't just call devm_regmap_init directly, fr fr — let the bus-specific init functions handle it. The auto-free is handled by the device management code, and that's iconic 🫶

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/regmap.h — and here's the whole friend group 👯‍♀️:

• struct reg_default(9)
• struct reg_sequence(9)
• regmap_read_poll_timeout(9)
• regmap_read_poll_timeout_atomic(9)
• regmap_field_read_poll_timeout(9)
• struct regmap_range(9)
• struct regmap_access_table(9)
• struct regmap_config(9)
• struct regmap_range_cfg(9)
• struct regmap_sdw_mbq_cfg(9)
• struct regmap_bus(9)
• regmap_init(9)
• regmap_init_i2c(9)
• regmap_init_mdio(9)
• regmap_init_sccb(9)
• regmap_init_slimbus(9)
• regmap_init_spi(9)
• regmap_init_spmi_base(9)
• regmap_init_spmi_ext(9)
• regmap_init_w1(9)
• regmap_init_mmio_clk(9)
• regmap_init_mmio(9)
• regmap_init_ac97(9)
• regmap_init_sdw(9)
• regmap_init_sdw_mbq(9)
• regmap_init_sdw_mbq_cfg(9)
• regmap_init_i3c(9)
• regmap_init_spi_avmm(9)
• regmap_init_fsi(9)
• devm_regmap_init_i2c(9)
• devm_regmap_init_mdio(9)
• devm_regmap_init_sccb(9)
• devm_regmap_init_spi(9)
• devm_regmap_init_spmi_base(9)
• devm_regmap_init_spmi_ext(9)
• devm_regmap_init_w1(9)
• devm_regmap_init_mmio_clk(9)
• devm_regmap_init_mmio(9)
• devm_regmap_init_ac97(9)
• devm_regmap_init_sdw(9)
• devm_regmap_init_sdw_mbq(9)
• devm_regmap_init_sdw_mbq_cfg(9)
• devm_regmap_init_slimbus(9)
• devm_regmap_init_i3c(9)
• devm_regmap_init_spi_avmm(9)
• devm_regmap_init_fsi(9)
• struct reg_field(9)
• struct regmap_irq_type(9)
• struct regmap_irq(9)
• struct regmap_irq_chip(9)

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And that's the page, bestie 🫶 cute little sign-off time: the footer energy is source/version path ./include/linux and date October 2026 — periodt 💅✨