heci_hcsr_write(9)

💖 heci_hcsr_write — kernel API manual, but make it slay 💖

okay so bestie, picture this: you're deep in the kernel, you've got a device structure in your hands, and you need to tell the hardware what's up. That's this function. It's in section 9 of the manual (heci_hcsr_write(9), iykyk) and honestly? It's giving "one job, done well." 🎀

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✨ NAME ✨

heci_hcsr_write — writes the H_CSR register to the device. That's it. That's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

void heci_hcsr_write (struct issei_device *idev , u32 reg );

no cap, that's the whole signature. two arguments, no return value, zero drama. 💅

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🧚 ARGUMENTS 🧚

• idev — the device structure. the main character, fr. this is the struct issei_device * you're poking at.
• reg — new register value. a u32, and it's literally the value you want to shove into the H_CSR register. 💖

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🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/misc/issei/hw_heci.c, and here's the whole friend group — go say hi to all of them:

• heci_reg_read(9)
• heci_reg_write(9)
• heci_fwcbrw_read(9)
• heci_hcbww_write(9)
• heci_irq_src(9)
• heci_hcsr_read(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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bestie reminder: this page lives under ./drivers/misc/issei 💜

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and that's the whole page! 🫶 written from the ./drivers/misc/issei source, October 2026 edition — heci_hcsr_write(9), iconic, no notes. 🌈✨