heci_reg_read(9)

💖 heci_reg_read(9) 💖

okay so welcome to the Kernel API Manual, section 9 bestie — today's main character is heci_reg_read, and she's honestly kind of a legend. this is the page for her, and it lives in ./drivers/misc/issei, home of all things issei heci. let's get into it 🫶

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✨ NAME ✨

heci_reg_read — Reads 32bit data from the issei heci device ✨

like, that's the whole vibe. 32 bits. from the issei heci device. she reads. she slays. 💅

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🌸 SYNOPSIS 🌸

u32 heci_reg_read (const struct issei_heci_hw *hw , unsigned long offset
);

so you hand her a pointer to the heci hardware struct and an offset, and she comes back at you with a u32. iconic behavior honestly 🎀

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🦋 ARGUMENTS 🦋

• hw — the heci hardware structure. this is the heci hardware struct, she needs it, don't forget it bestie 😭
• offset — offset from which to read the data. like... where in there do you want the data from. that's the offset. that's it. that's the whole thing.

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⭐ RETURN ⭐

register value (u32) — boom. that's what you get back. a u32. the register value. gorgeous. no cap 🔥

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👑 SEE ALSO 👑

the kernel file ./drivers/misc/issei/hw_heci.c is where the magic is, and here's the whole friend group — go say hi to all of them 💜

• heci_reg_write(9)
• heci_fwcbrw_read(9)
• heci_hcbww_write(9)
• heci_irq_src(9)
• heci_hcsr_read(9)
• heci_hcsr_write(9)
• heci_hcsr_set(9)
• heci_hcsr_set_hig(9)
• heci_fwcsr_read(9)
• heci_count_full_read_slots(9)
• heci_irq_disable(9)
• heci_irq_clear(9)
• issei_heci_irq_clear(9)
• issei_heci_irq_enable(9)
• issei_heci_irq_disable(9)
• issei_heci_hw_reset_release(9)
• heci_hw_is_ready(9)
• heci_hw_is_resetting(9)
• issei_heci_host_set_ready(9)
• issei_heci_hw_reset(9)
• issei_heci_irq_write_generate(9)
• issei_heci_hw_config(9)
• heci_write_hbuf(9)
• heci_read_hbuf(9)
• issei_heci_setup_message_send(9)
• issei_heci_setup_message_recv(9)
• issei_heci_dev_init(9)

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and that's the page!! 🎀 this one comes to you from ./drivers/misc/issei, dated October 2026, living in the Kernel API Manual, section 9 — bookmark it, screenshot it, send it to the group chat, whatever you gotta do 💖✨🦋