regmap_fields_read(9)

regmap_fields_read 💅✨

from the Kernel API Manual, section 9 — okay bestie, we’re reading a value to one single register field with a port ID. iconic behavior 🎀

🎀 NAME 🎀

regmap_fields_read — Read a value to a single register field with port ID. no cap, that’s the whole vibe 💖

📜 SYNOPSIS 📜

int regmap_fields_read (struct regmap_field *field , unsigned int id ,
       unsigned int *val );

🧚 ARGUMENTS 🧚

• field — Register field to read from 🎀
• id — port ID 👑
• val — Pointer to store read value 🫶

💫 DESCRIPTION 💫

okay so here’s the tea: a value of zero will be returned on success — slay ✨. a negative errno will be returned in error cases 😭. that’s the whole return-value situation, bestie.

vibe check: 0 means success, negative errno means error case. keep it cute and check it 💅

🦋 SEE ALSO 🦋

also peep the kernel file ./drivers/base/regmap/regmap.c and these absolute icons:

• 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_field_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)

okay bye bestie — source/version ./drivers/base/regmap, dated October 2026, and this regmap_fields_read(9) page is officially signing off 💋✨