sca3000_write_ctrl_reg(9)

💅 sca3000_write_ctrl_reg — bestie's guide to the kernel API manual, part 9

okay so we're literally in the Kernel API Manual rn and today's main character is sca3000_write_ctrl_reg(9) — a function that writes to a lock-protected ctrl register. yes the name is a whole mouthful, no we're not renaming it, it's iconic as is 🎀

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✨ NAME ✨

sca3000_write_ctrl_reg — write to a lock protect ctrl register 🫶

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🌸 SYNOPSIS 🌸

int sca3000_write_ctrl_reg (struct sca3000_state *st , u8 sel , uint8_t
val );

like, that's the whole signature. three args, one int coming back at you. slay ✨

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🦋 ARGUMENTS 🦋

• st — driver specific device instance data. it's your device's whole lil personality file tbh 💖
• sel — selects which registers we wish to write to. picks the vibe, basically 🎯
• val — the value to be written. the actual content. the payload. the moment 💅

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🔥 DESCRIPTION 🔥

so here's the tea ☕ — certain control registers are protected against overwriting by the lock register, and they use a shared write address. that's just how they are. no cap.

this function is the one that lets you write to these registers anyway. it's giving "VIP access to the locked section" energy 👑

⚠️ Lock must be held. fr fr. not optional. hold the lock, bestie, or it's gonna be a whole situation 😭

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/iio/accel/sca3000.c
• struct sca3000_state(9)
• struct sca3000_chip_info(9)
• sca3000_reg_lock_on(9)
• __sca3000_unlock_reg_lock(9)
• sca3000_read_ctrl_reg(9)
• sca3000_print_rev(9)
• __sca3000_get_base_freq(9)
• sca3000_read_raw_samp_freq(9)
• sca3000_write_raw_samp_freq(9)
• sca3000_read_av_freq(9)
• sca3000_write_event_value(9)
• sca3000_ring_int_process(9)
• sca3000_event_handler(9)
• sca3000_write_event_config(9)
• sca3000_hw_ring_preenable(9)
• sca3000_clean_setup(9)

that's the whole friend group, go read all of them, iykyk 🧚

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k bye ily, this page came to you from ./drivers/iio/accel, dated October 2026, and it's sca3000_write_ctrl_reg(9) — periodt. 💜✨