regmap_field...te_bits_base(9)

💅 regmap_field...te_bits_base(9)

okay so bestie, you've landed on a page from the Kernel API Manual and it's giving "tiny function, huge friend group" energy 😭✨ The title up top is the truncated version (regmap_field...te_bits_base(9) — yes the man page really does just cut it off like that, no notes 💀) but the actual star of the show is regmap_fields_update_bits_base. Let's get into it 🎀

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✨ NAME ✨

regmap_fields_update_bits_base — perform a read/modify/write cycle on a register field, with a port ID 🌸

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🦋 SYNOPSIS 🦋

int regmap_fields_update_bits_base (struct regmap_field *field ,
   unsigned int id , unsigned int mask , unsigned int val , bool *change ,
   bool async , bool force );

Like, look at all those parameters. She's got range 👑 Seven whole arguments, and every one of them matters, so please don't skip any 🙈

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💖 ARGUMENTS 💖

• field — the register field you're writing to, your main character 🫶
• id — the port ID
• mask — the bitmask that says which bits are getting changed
• val — the value you're actually writing in
• change — a boolean that tells you whether a write actually happened
• async — a boolean, and it means asynchronously ⚡
• force — a boolean, and it means use force update 💪

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⭐ DESCRIPTION ⭐

So here's the whole vibe: a value of zero gets returned on success 💚 and a negative errno comes back in the error cases 😭 that's it, that's the description, she's mysterious like that.

ngl bestie, this one is short and sweet — the function does a read/modify/write cycle on a register field with a port ID, and the return value is your vibe check: 0 = slay, negative errno = it did not slay 💀

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🌈 SEE ALSO 🌈

Kernel file ./drivers/base/regmap/regmap.c — the whole friend group lives here 🏠

• 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_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_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)

forty-one entries, bestie, I counted them so you don't have to 💅 iykyk

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✨ that's the whole page, mwah ✨

this masterpiece lives in ./drivers/base/regmap and the version/date on the tin is October 2026 🎀 go forth and read/modify/write responsibly, bestie 🦋💜