adis_update_bits(9)

💅 adis_update_bits(9) — the locked-version glow-up

okay so bestie, this is a page from the Kernel API Manual, and it's about a lil wrapper macro named adis_update_bits. Think of it as the locked version of adis_update_bits_base — the one that comes with the locks already handled so you don't have to think about it. iykyk. 🎀

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✨ SYNOPSIS ✨

adis_update_bits (adis , reg , mask , val );

that's it, that's the whole call. four things in, vibes out. 🦋

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🌸 ARGUMENTS 🌸

• adis — the adis device itself. the main character, the whole point. 👑
• reg — the address of the lower of the two registers. yes, lower — there's two of them and this is the bottom one, don't come for me, that's just how it is.
• mask — the bitmask that says which bits we're changing. your little selection filter. 💅
• val — the value being written. this is the one you gotta be careful with (more on that below, bestie 🫶).

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🧚 DESCRIPTION 🧚

so this macro lowkey does something kinda clever: it evaluates sizeof of val at compile time, and then calls adis_update_bits_base accordingly. clever girl behavior fr fr. ✨

⚠️ real talk though: if you use MACROS/DEFINES for val, you can get undesired behavior when the register you're updating is 16bit. not a drill, not a vibe, just a genuine footgun. 💀 use an actual typed value and sleep peacefully.

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🌈 SEE ALSO 🌈

all the siblings, cousins, and extended family — no cap, this is the whole group chat:

• Kernel file ./include/linux/iio/imu/adis.h
• struct adis_data(9)
• struct adis_ops(9)
• struct adis(9)
• adis_reset(9)
• __adis_write_reg_8(9)
• __adis_write_reg_16(9)
• __adis_write_reg_32(9)
• __adis_read_reg_16(9)
• __adis_read_reg_32(9)
• adis_write_reg(9)
• adis_read_reg(9)
• adis_write_reg_8(9)
• adis_write_reg_16(9)
• adis_write_reg_32(9)
• adis_read_reg_16(9)
• adis_read_reg_32(9)
• adis_update_bits_base(9)

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and that's the page, bestie 💜 this icon lives over in ./include/linux/iio/imu, dated October 2026, and honestly? she ate. now go update some bits. periodt. 🎀✨