sca3000_event_handler(9)

💅 sca3000_event_handler — a kernel API manual moment

okay so bestie, welcome to the sca3000_event_handler(9) page from the Kernel API Manual ✨ this is the one that handles interrupts for the sca3000 accelerometer driver, and honestly? it's giving main character energy in the interrupt handler department 🎀

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🌸 NAME 🌸

sca3000_event_handler — handling ring and non ring events. that's the whole vibe. ring events, non ring events, we do both 💖

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✨ SYNOPSIS ✨

irqreturn_t sca3000_event_handler (int irq , void *private );

look at her. three little pieces, one big job 👑

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🫶 ARGUMENTS 🫶

• irq — The irq being handled. that's the interrupt line we're showing up for 💅
• private — struct iio_device pointer for the device. yes bestie, it's a struct iio_device pointer, that's our device right there 🌟

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💜 DESCRIPTION 💜

so this is the Ring related interrupt handler 🔥 Depending on event, push to the ring buffer event chrdev or the event one. which one you ask? depends on the event, periodt.

and now the messy part 😭 this function is complicated by the fact that the devices can signify ring and non ring events via the same interrupt line — same line, two different kinds of events, rude honestly — and they can only be distinguished via a read of the relevant status register. so yeah, we gotta go read the status register to figure out which kind of event we're actually dealing with 🦋 no cap, that's just how it is.

ngl the "same interrupt line for both event types" thing is the whole reason this handler has to do the extra status-register read. if you're debugging this, that's your plot twist 💀

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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_write_ctrl_reg(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_write_event_config(9)
• sca3000_hw_ring_preenable(9)
• sca3000_clean_setup(9)

like, go read all of those if you want the full sca3000 lore, iykyk 📚💫

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okay that's the page!! quick sign-off so nobody comes for me: this one lives in ./drivers/iio/accel and the date stamp on it is October 2026 ⭐ she ate, no notes, bye bestie 🧚💜