regmap_raw_read(9)

💖 regmap_raw_read(9) — Kernel API Manual 💖

okay so bestie, this is the manual page for regmap_raw_read, from the Kernel API Manual. it's short, it's sweet, and it does exactly one thing. let's get into it ✨

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🌸 NAME 🌸

regmap_raw_read — Read raw data from the device 💅

like, literally just. reading. raw data. from the device. that's the whole vibe. no cap.

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🦋 SYNOPSIS 🦋

int regmap_raw_read (struct regmap *map , unsigned int reg , void *val ,
size_t val_len );

it returns an int, bestie. keep that in mind. 👀

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🎀 ARGUMENTS 🎀

• map — the register map you're reading from. this is your main character struct 💜
• reg — the first register to be read from. yes, the first one. it starts there and goes. 🫶
• val — a pointer to where the read value gets stored. pls make sure it's a real place to put things 🙈
• val_len — the size of the data to read. how much are we reading? this much. 📏

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✨ DESCRIPTION ✨

so here's the tea 🍓: a value of zero will be returned on success. zero = slay. zero = we ate. 👑

and a negative errno will be returned in error cases. so if you see a negative number, that's not a vibe. that's an error case. 😭

that's genuinely the whole description. short king energy. no notes. 💀

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🌈 SEE ALSO 🌈

first up, the source of truth — kernel file ./drivers/base/regmap/regmap.c 🧚

and then, bestie, the whole extended friend group. every single one. i'm not leaving anyone out, that would be rude:

• 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_noinc_read(9)
• regmap_field_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)

like, that's a whole group chat right there. iykyk 🫶

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so yeah, that's the page! 🌟 this lil beauty lives in ./drivers/base/regmap and it's dated October 2026 — which is, yes, a future date, and honestly? iconic of it. 💅✨