regmap_field_read(9)

💅 NAME 💅

regmap_field_read — read a value to a single register field. Yup bestie, this is the regmap_field_read(9) page from the Kernel API Manual, and it's giving “tiny function, very specific job” energy ✨

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🎀 SYNOPSIS 🎀

int regmap_field_read (struct regmap_field *field , unsigned int *val );

that's the whole signature, okay? copy it exactly, she's sensitive about punctuation 💅

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🦋 ARGUMENTS 🦋

• field — Register field to read from. like, the specific field you're reading from, bestie.
• val — Pointer to store read value. yes, the read value goes here 🫶

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🌸 DESCRIPTION 🌸

okay so listen: a value of zero will be returned on success, and a negative errno will be returned in error cases. that's the whole vibe check. 0 = slay, negative errno = something went wrong, no cap 😭

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🌈 SEE ALSO 🌈

Kernel file: ./drivers/base/regmap/regmap.c — that's the source file, periodt.

the rest of the regmap friend group, all here so nobody gets left on read:

• devm_regmap_field_alloc(9)
• regmap_field_bulk_alloc(9)
• devm_regmap_field_bulk_alloc(9)
• regmap_field_bulk_free(9)
• devm_regmap_field_bulk_free(9)
• devm_regmap_field_free(9)
• regmap_field_alloc(9)
• regmap_field_free(9)
• regmap_reinit_cache(9)
• regmap_exit(9)
• dev_get_regmap(9)
• regmap_get_device(9)
• regmap_can_raw_write(9)
• regmap_get_raw_read_max(9)
• regmap_get_raw_write_max(9)
• regmap_write(9)
• regmap_write_async(9)
• regmap_raw_write(9)
• regmap_noinc_write(9)
• regmap_field_update_bits_base(9)
• regmap_field_test_bits(9)
• regmap_fields_update_bits_base(9)
• regmap_bulk_write(9)
• regmap_multi_reg_write(9)
• regmap_multi_reg_write_bypassed(9)
• regmap_raw_write_async(9)
• regmap_read(9)
• regmap_read_bypassed(9)
• regmap_raw_read(9)
• regmap_noinc_read(9)
• regmap_fields_read(9)
• regmap_bulk_read(9)
• regmap_multi_reg_read(9)
• regmap_update_bits_base(9)
• regmap_test_bits(9)
• regmap_async_complete(9)
• regmap_register_patch(9)
• regmap_get_val_bytes(9)
• regmap_get_max_register(9)
• regmap_get_reg_stride(9)
• regmap_might_sleep(9)

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mwah 💋 this little page is brought to you by the ./drivers/base/regmap source/version, dated October 2026, and it's literally the regmap_field_read(9) page. bye bestie, go read some fields 🫶✨