STRUCT REG_FIELD(9)

✨ NAME ✨

Okay so welcome to the Kernel API Manual, bestie 💖 — this is the struct reg_field(9) page, and it's literally the description of an register field. Yes, “an register” — that's what it says, and we are not out here rewriting the facts, periodt 💅.

💅 SYNOPSIS 💅

Here's the struct in all its main-character glory ✨:

       struct reg_field {
           unsigned int reg;
           unsigned int lsb;
           unsigned int msb;
           unsigned int id_size;
           unsigned int id_offset;
        };

🎀 Members 🎀

Vibe check on the members, one by one 🫶:

• reg — Offset of the register within the regmap bank. Slay, that's the location bestie 📍.
• lsb — lsb of the register field. Lowkey the lsb vibe ✨.
• msb — msb of the register field. Highkey the msb vibe 👑.
• id_size — port size if it has some ports. If it's got ports, this is the size, no cap 🚪.
• id_offset — address offset for each ports. The address offset for each of those ports, periodt 💅.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/regmap.h — and then the whole friend group of references, bestie, all of them, no skips 💖:

• 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(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 regmap_irq_type(9)
• struct regmap_irq(9)
• struct regmap_irq_chip(9)

Source/version and date check, bestie: this page comes from ./include/linux, dated October 2026, and it's the struct reg_field(9) manual page. Bye, love you! 🫶✨